SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Falk Anna) "

Sökning: WFRF:(Falk Anna)

  • Resultat 1-50 av 186
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Ekhtiari, Hamed, et al. (författare)
  • A methodological checklist for fMRI drug cue reactivity studies : development and expert consensus
  • 2022
  • Ingår i: Nature Protocols. - : Nature Portfolio. - 1754-2189 .- 1750-2799. ; 17:3, s. 567-595
  • Tidskriftsartikel (refereegranskat)abstract
    • Cue reactivity measured by functional magnetic resonance imaging is used in studies of substance-use disorders. This Consensus Statement is the result of a Delphi process to arrive at parameters that should be reported in describing these studies. Cue reactivity is one of the most frequently used paradigms in functional magnetic resonance imaging (fMRI) studies of substance use disorders (SUDs). Although there have been promising results elucidating the neurocognitive mechanisms of SUDs and SUD treatments, the interpretability and reproducibility of these studies is limited by incomplete reporting of participants characteristics, task design, craving assessment, scanning preparation and analysis decisions in fMRI drug cue reactivity (FDCR) experiments. This hampers clinical translation, not least because systematic review and meta-analysis of published work are difficult. This consensus paper and Delphi study aims to outline the important methodological aspects of FDCR research, present structured recommendations for more comprehensive methods reporting and review the FDCR literature to assess the reporting of items that are deemed important. Forty-five FDCR scientists from around the world participated in this study. First, an initial checklist of items deemed important in FDCR studies was developed by several members of the Enhanced NeuroImaging Genetics through Meta-Analyses (ENIGMA) Addiction working group on the basis of a systematic review. Using a modified Delphi consensus method, all experts were asked to comment on, revise or add items to the initial checklist, and then to rate the importance of each item in subsequent rounds. The reporting status of the items in the final checklist was investigated in 108 recently published FDCR studies identified through a systematic review. By the final round, 38 items reached the consensus threshold and were classified under seven major categories: Participants Characteristics, General fMRI Information, General Task Information, Cue Information, Craving Assessment Inside Scanner, Craving Assessment Outside Scanner and Pre- and Post-Scanning Considerations. The review of the 108 FDCR papers revealed significant gaps in the reporting of the items considered important by the experts. For instance, whereas items in the General fMRI Information category were reported in 90.5% of the reviewed papers, items in the Pre- and Post-Scanning Considerations category were reported by only 44.7% of reviewed FDCR studies. Considering the notable and sometimes unexpected gaps in the reporting of items deemed to be important by experts in any FDCR study, the protocols could benefit from the adoption of reporting standards. This checklist, a living document to be updated as the field and its methods advance, can help improve experimental design, reporting and the widespread understanding of the FDCR protocols. This checklist can also provide a sample for developing consensus statements for protocols in other areas of task-based fMRI.
  •  
2.
  •  
3.
  • Rudman, Ann, et al. (författare)
  • Sjuksköterskor i frontlinjen av COVID-19 pandemin : vilka blev konsekvenserna? Teknisk rapport om enkät och datainsamling
  • 2022
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • Denna rapport summerar datainsamlingen som genomfördes av SCB (Statistiska centralbyrån) i projektet ”Sjuksköterskor i frontlinjen av COVID-19 pandemin: Vilka blev konsekvenserna?”. Projektet är finansierat av AFA försäkring (Diarienr 200311). I kapitel 1 beskrivs bakgrund till LUST (Longitudinell Undersökning om Sjuksköterskors Tillvaro) studien. I kapitel 2 beskrivs studien utifrån design, rekrytering och datainsamling. I kapitel 3 redovisas översikt över innehållet i enkäten som skickades ut studiedeltagarna. Projektet bedrivs på Högskolan Dalarna och inom ramen för Petter Gustavssons forskargrupp vid Karolinska Institutet.Sjuksköterskor har varit i frontlinjen av COVID-19-pandemin och de stressorer som de utsatts för i sitt arbete inom hälso- och sjukvården kan orsaka hälsoproblem. I föreliggande projekt har en nationell kartläggning av sjuksköterskors arbetssituation och hälsa under COVID-19 pandemin gjorts. Undersökningen är gjord utifrån de tre sjuksköterskekohorter som följts inom ramen för LUST-studien sedan 2002 (Gustavsson et al., 2013; Rudman, Hörberg, et al., 2020; Rudman et al., 2010). I LUST-studien har närmare 4500 sjuksköterskestudenter följts med uppföljande enkäter från deras utbildningstid 11 till 15 år efter examen. En uppföljande enkätundersökning genomfördes i september 2021 till januari 2022 vilket motsvarar 15 till 19 år efter examen. En speciellt anpassad enkät med relevans och aktualitet för arbetet under pandemin hade utvecklats gemensamt med forskare som har expertis gällande sjuksköterskor i olika verksamheter som belastats under COVID-19 pandemin. Enkäterna besvarades när pandemin pågått i ungefär ett år och nio månader.I samarbete med SCB har datainsamlingen genomförts som en postenkät med påminnelser och med möjlighet att besvara frågorna online. Svarsfrekvensen för enkätstudien blev 57% för hela undersökningen (för samtliga kohorter), vilket bedöms vara en hög svarsfrekvens med tanke på hur belastad sjuksköterskekåren har varit under COVID-19 pandemin.
  •  
4.
  • Wezyk, Michalina, et al. (författare)
  • Overactive BRCA1 Affects Presenilin 1 in Induced Pluripotent Stem Cell-Derived Neurons in Alzheimer's Disease
  • 2018
  • Ingår i: Journal of Alzheimer's Disease. - : IOS Press. - 1387-2877 .- 1875-8908. ; 62:1, s. 175-202
  • Tidskriftsartikel (refereegranskat)abstract
    • The BRCA1 protein, one of the major players responsible for DNA damage response has recently been linked to Alzheimer's disease (AD). Using primary fibroblasts and neurons reprogrammed from induced pluripotent stem cells (iPSC) derived from familial AD (FAD) patients, we studied the role of the BRCA1 protein underlying molecular neurodegeneration. By whole-transcriptome approach, we have found wide range of disturbances in cell cycle and DNA damage response in FAD fibroblasts. This was manifested by significantly increased content of BRCA1 phosphorylated on Ser1524 and abnormal ubiquitination and subcellular distribution of presenilin 1 (PS1). Accordingly, the iPSC-derived FAD neurons showed increased content of BRCA1(Ser1524) colocalized with degraded PS1, accompanied by an enhanced immunostaining pattern of amyloid-beta. Finally, overactivation of BRCA1 was followed by an increased content of Cdc25C phosphorylated on Ser216, likely triggering cell cycle re-entry in FAD neurons. This study suggests that overactivated BRCA1 could both influence PS1 turnover leading to amyloid-beta pathology and promote cell cycle re-entry-driven cell death of postmitotic neurons in AD.
  •  
5.
  • Almqvist, Hakan, et al. (författare)
  • Radiological evaluation in patients with clinical suspicion of cerebral venous sinus thrombosis presenting with nontraumatic headache-a retrospective observational study with a validation cohort
  • 2020
  • Ingår i: BMC Medical Imaging. - : BMC. - 1471-2342. ; 20:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Clinical suspicion of cerebral venous sinus thrombosis (CVST) is imprecise due to non-specific symptoms such as headache. The aim was to retrospectively assess the diagnostic value of nonenhanced CT (neCT) in patients with nontraumatic headache and clinically suspected CVST. Methods A retrospective consecutive series of patients referred 2013-2015 for radiology were evaluated. Eligible patients had nontraumatic headache and suspicion of CVST stated in the referral, investigated with CT venography (CTV) and nonenhanced CT (neCT). neCT scans were re-evaluated for the presence of CVST or other pathology. All CTVs were checked for the presence of CVST. The validation cohort consisted of 10 patients with nontraumatic CVT (2017-2019). Results Less than 1% (1/104) had a suspected thrombus on neCT, confirmed by subsequent CTV. The remaining 99% had a CTV excluding CVST. Eleven percent had other imaging findings explaining their symptoms. In the patient with CVST, the thrombosed dural sinus was high attenuating (maximum HU 89) leading to the suspicion of CVST confirmed by CTV. The validation cohort (n = 10) confirmed the presence of a high attenuating (HU > 65) venous structure in the presence of a confirmed thrombus in all patients presenting within 10 days (suspicion written in referral, 10%). Conclusions Despite clinical suspicion, imaging findings of CVST in nontraumatic headache are uncommon. Evaluating neCT for high attenuation in dural sinuses, followed by CTV for confirmation in selected cases seems reasonable. CVST should be recognized by all radiologists and requires a high level of awareness when reading neCT for other indications.
  •  
6.
  • Alsterholm, Mikael, 1977, et al. (författare)
  • Establishment and utility of SwedAD : a nationwide Swedish registry for patients with atopic dermatitis receiving systemic pharmacotherapy
  • 2023
  • Ingår i: Acta Dermato-Venereologica. - : Medical Journals Sweden AB. - 0001-5555 .- 1651-2057. ; 103
  • Tidskriftsartikel (refereegranskat)abstract
    • SwedAD, a Swedish nationwide registry for patients with atopic dermatitis receiving systemic pharmacotherapy, was launched on 1 September 2019. We describe here the establishment of a user-friendly registry to the benefit of patients with atopic dermatitis. By 5 November 2022, 38 clinics had recorded 931 treatment episodes in 850 patients with an approximate national coverage rate of 40%. Characteristics at enrolment included median Eczema Area and Severity Index (EASI) 10.2 (interquartile range 4.0, 19.4), Patient-Oriented Eczema Measure (POEM) 18.0 (10.0, 24.0), Dermatology Life Quality Index (DLQI) 11.0 (5.0, 19.0) and Peak Itch Numerical Rating Scale-11 (NRS-11) 6.0 (3.0, 8.0). At 3 months, median EASI was 3.2 (1.0, 7.3) and POEM, DLQI, and NRS-11 were improved. Regional coverage varied, reflecting the distribution of dermatologists, the ratio of public to private healthcare, and difficulties in recruiting certain clinics. This study highlights the importance of a nationwide registry when managing systemic pharmacotherapy of atopic dermatitis.
  •  
7.
  • Brattås, Per Ludvik, et al. (författare)
  • TRIM28 Controls a Gene Regulatory Network Based on Endogenous Retroviruses in Human Neural Progenitor Cells
  • 2017
  • Ingår i: Cell Reports. - : Elsevier BV. - 2211-1247. ; 18:1, s. 1-11
  • Tidskriftsartikel (refereegranskat)abstract
    • Endogenous retroviruses (ERVs), which make up 8% of the human genome, have been proposed to participate in the control of gene regulatory networks. In this study, we find a region- and developmental stage-specific expression pattern of ERVs in the developing human brain, which is linked to a transcriptional network based on ERVs. We demonstrate that almost 10,000, primarily primate-specific, ERVs act as docking platforms for the co-repressor protein TRIM28 in human neural progenitor cells, which results in the establishment of local heterochromatin. Thereby, TRIM28 represses ERVs and consequently regulates the expression of neighboring genes. These results uncover a gene regulatory network based on ERVs that participates in control of gene expression of protein-coding transcripts important for brain development.
  •  
8.
  • Cedervall, Jessica, et al. (författare)
  • Pharmacological targeting of peptidylarginine deiminase 4 prevents cancer-associated kidney injury in mice.
  • 2017
  • Ingår i: Oncoimmunology. - : Taylor & Francis. - 2162-4011 .- 2162-402X. ; 6:8
  • Tidskriftsartikel (refereegranskat)abstract
    • Renal insufficiency is a frequent cancer-associated problem affecting more than half of all cancer patients at the time of diagnosis. To minimize nephrotoxic effects the dosage of anticancer drugs are reduced in these patients, leading to sub-optimal treatment efficacy. Despite the severity of this cancer-associated pathology, the molecular mechanisms, as well as therapeutic options, are still largely lacking. We here show that formation of intravascular tumor-induced neutrophil extracellular traps (NETs) is a cause of kidney injury in tumor-bearing mice. Analysis of clinical biomarkers for kidney function revealed impaired creatinine clearance and elevated total protein levels in urine from tumor-bearing mice. Electron microscopy analysis of the kidneys from mice with cancer showed reversible pathological signs such as mesangial hypercellularity, while permanent damage such as fibrosis or necrosis was not observed. Removal of NETs by treatment with DNase I, or pharmacological inhibition of the enzyme peptidylarginine deiminase 4 (PAD4), was sufficient to restore renal function in mice with cancer. Tumor-induced systemic inflammation and impaired perfusion of peripheral vessels could be reverted by the PAD4 inhibitor. In conclusion, the current study identifies NETosis as a previously unknown cause of cancer-associated renal dysfunction and describes a novel promising approach to prevent renal failure in individuals with cancer.
  •  
9.
  • Delgado, Anna Falk, et al. (författare)
  • Discrimination between primary low-grade and high-grade glioma with 11C-methionine PET : a bivariate diagnostic test accuracy meta-analysis
  • 2018
  • Ingår i: British Journal of Radiology. - : British Institute of Radiology. - 0007-1285 .- 1748-880X. ; 91:1082
  • Forskningsöversikt (refereegranskat)abstract
    • Objective: To perform a meta-analysis evaluating the diagnostic accuracy of 11C-methionine (MET) positron emission tomography (PET) to discriminate between primary low-grade glioma (LGG) and high-grade glioma (HGG).Methods: A systematic database search was performed by a librarian in relevant databases with the latest search on 07 November 2016. Hits were assessed for inclusion independently by two authors. Individual patient data on relative MET uptake was extracted on patients examined pre-operatively with MET PET and subsequent neuropathological diagnosis of astrocytoma or oligodendroglioma. Individual patient data were analysed for diagnostic accuracy using a bivariate diagnostic random-effects meta-analysis model with restricted maximum likelihood estimation method. Bivariate meta-regression and subgroup analyses assessed study heterogeneity and validity. This study is registered with PROSPERO, number CRD42016050747.Results: Out of 1828 hits, 13 studies comprising of 241 individuals were included in the quantitative and qualitative analysis. MET PET had an area under the bivariate summary receiver operating characteristics curve of 0.78 to discriminate between LGG and HGG and a summary sensitivity of 0.80 with 95% confidence interval (CI) (0.66–0.88) and a summary false positive rate of 0.28, 95% CI (0.19–0.38). Heterogeneity was described by; bias in patient inclusion, study quality, and ratio method. Optimal cutoff for relative MET uptake was 2.21.Conclusion: MET PET had a moderately high diagnostic accuracy for the discrimination between primary LGG and HGG.Advances in knowledge: MET PET can be used as a clinical tool for the non-invasive discrimination between LGG and HGG with a moderately high accuracy at cut-off 2.21.
  •  
10.
  • Delgado, Anna Falk, et al. (författare)
  • Glioma Grade Discrimination with MR Diffusion Kurtosis Imaging : A Meta-Analysis of Diagnostic Accuracy
  • 2018
  • Ingår i: Radiology. - : RADIOLOGICAL SOC NORTH AMERICA. - 0033-8419 .- 1527-1315. ; 287:1, s. 119-127
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose: To assess the diagnostic test accuracy and sources of heterogeneity for the discriminative potential of diffusion kurtosis imaging (DKI) to differentiate low-grade glioma (LGG) (World Health Organization [WHO] grade II) from high-grade glioma (HGG) (WHO grade III or IV).Materials and Methods: The Cochrane Library, Embase, Medline, and the Web of Science Core Collection were systematically searched by two librarians. Retrieved hits were screened for inclusion and were evaluated with the revised tool for quality assessment for diagnostic accuracy studies (commonly known as QUADAS-2) by two researchers. Statistical analysis comprised a random-effects model with associated heterogeneity analysis for mean differences in mean kurtosis (MK) in patients with LGG or HGG. A bivariate restricted maximum likelihood estimation method was used to describe the summary receiver operating characteristics curve and bivariate meta-regression.Results: Ten studies involving 430 patients were included. The mean difference in MK between LGG and HGG was 0.17 (95% confidence interval [CI]: 0.11, 0.22) with a z score equal to 5.86 (P<.001). The statistical heterogeneity was explained by glioma subtype, echo time, and the proportion of recurrent glioma versus primary glioma. The pooled area under the curve was 0.94 for discrimination of HGG from LGG, with 0.85 (95% CI: 0.74, 0.92) sensitivity and 0.92 (95% CI: 0.81, 0.96) specificity. Heterogeneity was driven by neuropathologic subtype and DKI technique.Conclusion: MK shows high diagnostic accuracy in the discrimination of LGG from HGG.
  •  
11.
  • Delgado, Anna Falk, et al. (författare)
  • Neuroimaging lesion assessment by pseudo-subtraction of overlaid semi-transparent volumes : A technical description and feasibility series
  • 2021
  • Ingår i: The Neuroradiology Journal. - : Sage Publications. - 1971-4009 .- 2385-1996. ; 34:2, s. 128-130
  • Tidskriftsartikel (refereegranskat)abstract
    • Assessing and reporting clinical images constitutes the mainstay of clinical neuroradiology. Continually increasing numbers of neuroradiology referrals and follow-up examinations call for reproducible, accurate, and rapid workflows. Readily available and easy to use, advanced workstation tools such as co-registration of volume series can be used to overlay volume series from two different time points as semi-transparent images, with an inverse color scale. By overlaying semi-transparent inverse color maps, stationary findings will be shaded out in grey, whereas progressing or regressing lesions will be highlighted as white or black in the resulting pseudo-subtraction map. Pseudosubtraction in longitudinal neuroradiology imaging might enhance workflow and imaging assessment.
  •  
12.
  • Delsing, Louise, et al. (författare)
  • Barrier properties and transcriptome expression in human iPSC-derived models of the blood-brain barrier
  • 2018
  • Ingår i: Stem Cells. - : AlphaMed Press, Inc.. - 1066-5099 .- 1549-4918. ; 36:12, s. 1816-1827
  • Tidskriftsartikel (refereegranskat)abstract
    • Cell-based models of the blood-brain barrier (BBB) are important for increasing the knowledge of BBB formation, degradation and brain exposure of drug substances. Human models are preferred over animal models because of inter-species differences in BBB structure and function. However, access to human primary BBB tissue is limited and has shown degeneration of BBB functions in vitro. Human induced pluripotent stem cells (iPSCs) can be used to generate relevant cell types to model the BBB with human tissue. We generated a human iPSC-derived model of the BBB that includes endothelial cells in co-culture with pericytes, astrocytes and neurons. Evaluation of barrier properties showed that the endothelial cells in our co-culture model have high transendothelial electrical resistance, functional efflux and ability to discriminate between CNS permeable and non-permeable substances. Whole genome expression profiling revealed transcriptional changes that occur in co-culture, including upregulation of tight junction proteins such as claudins and neurotransmitter transporters. Pathway analysis implicated changes in the WNT, TNF and PI3K-Akt pathways upon co-culture. Our data suggests that co-culture of iPSC-derived endothelial cells promotes barrier formation on a functional and transcriptional level. The information about gene expression changes in co-culture can be used to further improve iPSC-derived BBB models through selective pathway manipulation.
  •  
13.
  • Eisfeldt, Jesper, et al. (författare)
  • Multi-Omic Investigations of a 17-19 Translocation Links MINK1 Disruption to Autism, Epilepsy and Osteoporosis
  • 2022
  • Ingår i: International Journal of Molecular Sciences. - : MDPI. - 1661-6596 .- 1422-0067. ; 23:16
  • Tidskriftsartikel (refereegranskat)abstract
    • Balanced structural variants, such as reciprocal translocations, are sometimes hard to detect with sequencing, especially when the breakpoints are located in repetitive or insufficiently mapped regions of the genome. In such cases, long-range information is required to resolve the rearrangement, identify disrupted genes and, in symptomatic carriers, pinpoint the disease-causing mechanisms. Here, we report an individual with autism, epilepsy and osteoporosis and a de novo balanced reciprocal translocation: t(17;19) (p13;p11). The genomic DNA was analyzed by short-, linked- and long-read genome sequencing, as well as optical mapping. Transcriptional consequences were assessed by transcriptome sequencing of patient-specific neuroepithelial stem cells derived from induced pluripotent stem cells (iPSC). The translocation breakpoints were only detected by long-read sequencing, the first on 17p13, located between exon 1 and exon 2 of MINK1 (Misshapen-like kinase 1), and the second in the chromosome 19 centromere. Functional validation in induced neural cells showed that MINK1 expression was reduced by >50% in the patient's cells compared to healthy control cells. Furthermore, pathway analysis revealed an enrichment of changed neural pathways in the patient's cells. Altogether, our multi-omics experiments highlight MINK1 as a candidate monogenic disease gene and show the advantages of long-read genome sequencing in capturing centromeric translocations.
  •  
14.
  • Falk Delgado, Alberto, et al. (författare)
  • Arterial spin labeling MR imaging for differentiation between high- and low-grade glioma - A meta-analysis
  • 2018
  • Ingår i: Neuro-Oncology. - : Oxford University Press (OUP). - 1522-8517 .- 1523-5866. ; 20:11, s. 1450-1461
  • Tidskriftsartikel (refereegranskat)abstract
    • Background. Arterial spin labeling is an MR imaging technique that measures cerebral blood flow (CBF) noninvasively. The aim of the study is to assess the diagnostic performance of arterial spin labeling (ASL) MR imaging for differentiation between high-grade glioma and low-grade glioma. Methods. Cochrane Library, Embase, Medline, and Web of Science Core Collection were searched. Study selection ended November 2017. This study was prospectively registered in PROSPERO (CRD42017080885). Two authors screened all titles and abstracts for possible inclusion. Data were extracted independently by 2 authors. Bivariate random effects meta-analysis was used to describe summary receiver operating characteristics. Trial sequential analysis (TSA) was performed. Results. In total, 15 studies with 505 patients were included. The diagnostic performance of ASL CBF for glioma grading was 0.90 with summary sensitivity 0.89 (0.79-0.90) and specificity 0.80 (0.72-0.89). The diagnostic performance was similar between pulsed ASL (AUC 0.90) with a sensitivity 0.85 (0.71-0.91) and specificity 0.83 (0.69- 0.92) and pseudocontinuous ASL (AUC 0.88) with a sensitivity 0.86 (0.79-0.91) and specificity 0.80 (0.65-0.87). In astrocytomas, the diagnostic performance was 0.89 with sensitivity 0.86 (0.79 to 0.91) and specificity 0.79 (0.63 to 0.89). Sensitivity analysis confirmed the robustness of the findings. TSA revealed that the meta-analysis was adequately powered. Conclusion. Arterial spin labeling MR imaging had an excellent diagnostic accuracy for differentiation between high-grade and low-grade glioma. Given its low cost, non-invasiveness, and efficacy, ASL MR imaging should be considered for implementation in the routine workup of patients with glioma.
  •  
15.
  • Falk Delgado, Alberto, et al. (författare)
  • Clinical outcome after surgical clipping or endovascular coiling for cerebral aneurysms : a pragmatic meta- analysis of randomized and non- randomized trials with short- and long- term follow- up
  • 2017
  • Ingår i: JOURNAL OF NEUROINTERVENTIONAL SURGERY. - : BMJ PUBLISHING GROUP. - 1759-8478 .- 1759-8486. ; 9:3, s. 264-
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Two randomized trials have evaluated clipping and coiling in patients with ruptured aneurysms. Aggregated evidence for management of ruptured and unruptured aneurysms is missing. Objective To conduct a meta- analysis evaluating clinical outcome after aneurysm treatment. Methods PubMed, Cochrane Central Register of Controlled Trials, and Clinicaltrials. gov were searched for studies evaluating aneurysm treatment. The primary outcome measure was an independent clinical outcome ( modified Rankin scale 0- 2, Glasgow Outcome Scale 4- 5, or equivalent). Secondary outcomes were poor outcome and mortality. ORs were calculated on an intention- to- treat basis with 95% Cls. Outcome heterogeneity was evaluated with Cochrane's Q test ( significance level cut- off value at < 0.10) and l(2) ( significance cut- off value > 50%) with the Mantel-Haenszel method for dichotomous outcomes. A p value < 0.05 was regarded as statistically significant. Results Searches yielded 18 802 articles. All titles were assessed, 403 abstracts were evaluated, and 183 full-text articles were read. One- hundred and fifty articles were qualitatively assessed and 85 articles were included in the meta- analysis. Patients treated with coiling ( randomized controlled trials ( RCTs)) had higher independent outcome at short- term follow- up ( OR= 0.67, 95% Cl 0.57 to 0.79). Independent outcome was favored for coiling at intermediate and long- term follow-up ( RCTs and observational studies combined-OR= 0.80, 0.68 to 0.94 and OR= 0.81, 0.71 to 0.93, respectively). Independent outcome and lower mortality was favored after coiling in unruptured aneurysms ( database registry studies) at short- term follow- up ( OR= 0.34, 0.29 to 0.41 and OR= 1.74, 1.52 to 1.98, respectively). Conclusions This meta- analysis evaluating clinical outcome after coiling or clipping for intracranial aneurysms, indicates a higher independent outcome and lower mortality after coiling.
  •  
16.
  • Falk Delgado, Alberto, et al. (författare)
  • Complete Lymph Node Dissection in Melanoma : A Systematic Review and Meta-Analysis
  • 2017
  • Ingår i: Anticancer Research. - : Anticancer Research USA Inc.. - 0250-7005 .- 1791-7530. ; 37:12, s. 6825-6829
  • Forskningsöversikt (refereegranskat)abstract
    • Background: The aim of this meta-analysis was to estimate the survival after immediate complete lymph node dissection (CLND) compared to observation only (OO) or delayed CLND in patients with melanoma and lymph node metastasis.Materials and Methods: A systematic search was performed in: PubMed, Web of Science, Cochrane Library, CINAHL, Clinical trials and Embase. Eligible studies were randomized controlled trials (RCTs) comparing: CLND with OO, or immediate CLND with delayed CLND.Results: Four RCTs were included. There was no difference in melanoma-specific survival (MSS) (HR=0.91, 95% CI=0.77-1.08, p=0.29). In a sensitivity analysis, MSS was higher after immediate CLND compared to delayed CLND in patients with nodal metastasis (HR=0.63, 95% CI=0.35-0.74, p=0.0004) without evidence of heterogeneity.Conclusion: CLND appears to have no additional survival benefit after SNB compared to OO. However, subgroup analysis suggests a time-dependent benefit for early surgical lymph node removal compared to delayed or none.
  •  
17.
  • Falk Delgado, Anna, et al. (författare)
  • Diagnostic value of alternative techniques to gadolinium-based contrast agents in MR neuroimaging : a comprehensive overview
  • 2019
  • Ingår i: Insights into Imaging. - : Springer Science and Business Media LLC. - 1869-4101. ; 10:1
  • Forskningsöversikt (refereegranskat)abstract
    • Gadolinium-based contrast agents (GBCAs) increase lesion detection and improve disease characterization for many cerebral pathologies investigated with MRI. These agents, introduced in the late 1980s, are in wide use today. However, some non-ionic linear GBCAs have been associated with the development of nephrogenic systemic fibrosis in patients with kidney failure. Gadolinium deposition has also been found in deep brain structures, although it is of unclear clinical relevance. Hence, new guidelines from the International Society for Magnetic Resonance in Medicine advocate cautious use of GBCA in clinical and research practice. Some linear GBCAs were restricted from use by the European Medicines Agency (EMA) in 2017.This review focuses on non-contrast-enhanced MRI techniques that can serve as alternatives for the use of GBCAs. Clinical studies on the diagnostic performance of non-contrast-enhanced as well as contrast-enhanced MRI methods, both well established and newly proposed, were included. Advantages and disadvantages together with the diagnostic performance of each method are detailed. Non-contrast-enhanced MRIs discussed in this review are arterial spin labeling (ASL), time of flight (TOF), phase contrast (PC), diffusion-weighted imaging (DWI), magnetic resonance spectroscopy (MRS), susceptibility weighted imaging (SWI), and amide proton transfer (APT) imaging.Ten common diseases were identified for which studies reported comparisons of non-contrast-enhanced and contrast-enhanced MRI. These specific diseases include primary brain tumors, metastases, abscess, multiple sclerosis, and vascular conditions such as aneurysm, arteriovenous malformation, arteriovenous fistula, intracranial carotid artery occlusive disease, hemorrhagic, and ischemic stroke.In general, non-contrast-enhanced techniques showed comparable diagnostic performance to contrast-enhanced MRI for specific diagnostic questions. However, some diagnoses still require contrast-enhanced imaging for a complete examination.
  •  
18.
  • Falk Delgado, Alberto, et al. (författare)
  • Home institution bias in the New England Journal of Medicine? : A noninferiority study on citation rates
  • 2018
  • Ingår i: Scientometrics. - : SPRINGER. - 0138-9130 .- 1588-2861. ; 115:1, s. 607-611
  • Tidskriftsartikel (refereegranskat)abstract
    • Recently, in the four top journals of humanities, an institutional bias towards publication of authors from Harvard and Yale was shown. The New England Journal of Medicine (NEJM) is today the highest ranked general medical journal. It is unknown if there exists institutional bias favoring publication of articles originating from Harvard University, since the NEJM is produced by the Massachusetts Medical Society with close connections to the Harvard University. We examined if studies originating from the Harvard University published in the NEJM were noninferior in terms of citation rates compared to articles with an origin outside Harvard University. We evaluated original research articles published in the NEJM in 2000 up until June 2001. A two-sample noninferiority test based on the primary endpoint of citations was performed. Twenty-two studies were affiliated to the Harvard University and 280 studies were not affiliated to the Harvard University. The mean number of citations for Harvard affiliated studies was 625 (95% CI 358-952, median 354) and for non-Harvard affiliated studies 493 (95% CI 421-569, median 303). The mean difference was not statistically different between affiliations, but fulfilled the requirements for noninferiority [132 (95% CI - 138-402, P = 0.343), Delta 200]. In summary, citation rates were comparable between studies origination from the Harvard University compared to non-Harvard Institutions. Based on these results there appears to be low risk of institutional bias in the publishing process of original studies in the NEJM.
  •  
19.
  • Falk-Delgado, Anna, et al. (författare)
  • Improved clinical outcome 3 months after endovascular treatment, including thrombectomy, in patients with acute ischemic stroke : a meta-analysis
  • 2016
  • Ingår i: Journal of neurointerventional surgery. - : BMJ. - 1759-8486 .- 1759-8478. ; 8:7
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND AND PURPOSE: Intravenous thrombolysis with tissue plasminogen activator is standard treatment in acute stroke today. The benefit of endovascular treatment has been questioned. Recently, studies evaluating endovascular treatment and intravenous thrombolysis compared with intravenous thrombolysis alone, have reported improved outcome for the intervention group. The aim of this study was to perform a meta-analysis of randomized controlled trials comparing endovascular treatment in addition to intravenous thrombolysis with intravenous thrombolysis alone.METHODS: Databases were searched for eligible randomized controlled trials. The primary outcome was a functional neurological outcome after 90 days. A secondary outcome was severe disability and death. Data were pooled in the control and intervention groups, and OR was calculated on an intention to treat basis with 95% CIs. Outcome heterogeneity was evaluated with Cochrane's Q test (significance level cut-off value at <0.10) and I(2) (significance cut-off value >50%) with the Mantel-Haenszel method for dichotomous outcomes. A p value <0.05 was regarded as statistically significant.RESULTS: Six studies met the eligibility criteria, and data from 1569 patients were analyzed. A higher probability of a functional neurological outcome after 90 days was found for the intervention group (OR 2, 95% CI 2 to 3). There was a significantly higher probability of death and severe disability in the control group compared with the intervention group.CONCLUSIONS: Endovascular treatment in addition to intravenous thrombolysis for acute ischemic stroke leads to an improved clinical outcome after 3 months, compared with patients receiving intravenous thrombolysis alone.
  •  
20.
  • Falk Delgado, Anna, et al. (författare)
  • [In Process Citation].
  • 2015
  • Ingår i: Läkartidningen. - 0023-7205 .- 1652-7518. ; 112
  • Tidskriftsartikel (refereegranskat)abstract
    • Systemic thrombolysis is an established treatment in acute ischemic stroke. Endovascular treatment to reperfuse occluded vessels has been in clinical practice the last decade. The role of neurointervention in acute ischemic stroke has been questioned. Within the last year, several randomized controlled trials have been published, comparing endovascular treatment and systemic thrombolysis with systemic thrombolysis alone. A meta-analysis, using data from six trials treating 1569 patients, was recently published. In this meta-analysis, patients treated with endovascular therapy in addition to IV thrombolysis had a more favourable clinical outcome compared to patients receiving IV thrombolysis alone, after 3 months. Compared to the individ-ual studies, a decreased mortality in the intervention group was shown. Assessing the safety of endovascular treatment, there was no increased risk of intracranial bleed-ing, compared to IV thrombolysis alone. This meta-analysis highlights and summar-izes the scientific evidence for endovascular treatment in acute ischemic stroke.
  •  
21.
  • Falk Delgado, Alberto, et al. (författare)
  • Inconsistent Reporting Between Meta-analysis Protocol and Publication – A Cross-Sectional Study
  • 2017
  • Ingår i: Anticancer Research. - : Anticancer Research USA Inc.. - 0250-7005 .- 1791-7530. ; 37:9, s. 5101-5107
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Inconsistent reporting in published meta-analyses compared to registered protocol are poorly understood. The aim of the study was to assess inconsistencies between registered protocols and published reports among oncology drug meta-analyses.Materials and Methods: A cross-sectional study was performed including oncology drug meta-analyses published between January 1st and November 14th 2016 with a published protocol. Two investigators extracted data on: selection criteria, outcome(s) and statistical plan in protocol and manuscript, plus self-acknowledgement of inconsistent reporting between protocol and publication.Results: Protocol registration was present in 19% (23/119) of all oncology drug meta-analyses. In meta-analyses with protocol (n= 23), 70% (16/23) had issues with inconsistent reporting between protocol and published report concerning; inclusion criteria, comparator group, intervention, outcome (PICO) or statistical analysis. Self-acknowledgement of changes between protocol and publication was found in 50% (8/16).Conclusion: In meta-analyses with protocol, discrepancies between registered protocols and publications are frequent.
  •  
22.
  • Falk Delgado, Alberto, et al. (författare)
  • Melanoma Sentinel-Node Metastasis.
  • 2017
  • Ingår i: New England Journal of Medicine. - 0028-4793 .- 1533-4406. ; 377:9, s. 891-892
  • Tidskriftsartikel (refereegranskat)
  •  
23.
  • Falk Delgado, Alberto, et al. (författare)
  • Ruptured carotid-ophthalmic aneurysm treatment : a non-inferiority meta-analysis comparing endovascular coiling and surgical clipping
  • 2017
  • Ingår i: British Journal of Neurosurgery. - : Informa UK Limited. - 0268-8697 .- 1360-046X. ; 31:3, s. 345-349
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: Aneurysms of the carotid-ophthalmic segment are relatively rare, comprising only five percent of all intracranial aneurysms. There is no consensus regarding the optimal management for ruptured carotid-ophthalmic aneurysms, whether endovascular coiling or surgical clipping provide the most favourable patient outcome. The aim of this meta-analysis is to analyse these two treatment modalities for ruptured carotid-ophthalmic aneurysms with respect to independent clinical outcome.Methods: We performed a systematic literature search in PubMed, Cochrane Central Registry of Controlled Trials and Clinicaltrials.gov for treatment of ruptured carotid-ophthalmic aneurysms, comparing endovascular coiling and surgical clipping. Primary outcome in the study was independent clinical patient outcome at follow up (defined as Glasgow Outcome Scale four–five). Secondary outcomes were poor clinical patient outcome, mortality and total angiographic occlusion. The meta-analysis was performed using the Mantel–Haenszel method for dichotomous outcome.Results: Four studies met the inclusion criteria and were included in the meta-analysis. In total, 152 patients were included. Sixty-seven of these patients were treated with endovascular coiling and 85 patients were treated with microsurgical clipping. The proportion of patients with an independent clinical outcome after coiling and clipping was comparable, OR 1.04 (95% CI: 0.40, 2.71). The proportion of patients with an independent outcome in the endovascular group was 76% and in the surgical group 71%. Mortality between the two treatment arms was equal.Conclusion: Clinical outcome after endovascular coiling and surgical clipping for ruptured carotid-ophthalmic aneurysms was comparable between surgical clipping and endovascular coiling. There was no proven difference in clinical outcome after endovascular coiling and surgical clipping for ruptured carotid-ophthalmic aneurysms but the evidence was based on few studies of moderate to low quality and we cannot rule out the possibility of a difference in clinical outcome between the two treatment modalities.
  •  
24.
  • Falk Delgado, Alberto, et al. (författare)
  • Self-declared stock ownership and association with positive trial outcome in randomized controlled trials with binary outcomes published in general medical journals : a cross-sectional study
  • 2017
  • Ingår i: Trials. - : Springer Science and Business Media LLC. - 1745-6215. ; 18
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Describe the prevalence and types of conflicts of interest (COI) in published randomized controlled trials (RCTs) in general medical journals with a binary primary outcome and assess the association between conflicts of interest and favorable outcome. Methods: Parallel-group RCTs with a binary primary outcome published in three general medical journals during 2013-2015 were identified. COI type, funding source, and outcome were extracted. Binomial logistic regression model was performed to assess association between COI and funding source with outcome. Results: A total of 509 consecutive parallel-group RCTs were included in the study. COI was reported in 74% in mixed funded RCTs and in 99% in for-profit funded RCTs. Stock ownership was reported in none of the non-profit RCTs, in 7% of mixed funded RCTs, and in 50% of for-profit funded RCTs. Mixed-funded RCTs had employees from the funding company in 11% and for-profit RCTs in 76%. Multivariable logistic regression revealed that stock ownership in the funding company among any of the authors was associated with a favorable outcome (odds ratio = 3.53; 95% confidence interval = 1.59-7.86; p < 0.01). Conclusion: COI in for-profit funded RCTs is extensive, because the factors related to COI are not fully independent, a multivariable analysis should be cautiously interpreted. However, after multivariable adjustment only stock ownership from the funding company among authors is associated with a favorable outcome.
  •  
25.
  • Falk Delgado, Alberto, et al. (författare)
  • Sentinel Lymph Node Biopsy and Complete Lymph Node Dissection for Melanoma
  • 2019
  • Ingår i: Current Oncology Reports. - : SPRINGER. - 1523-3790 .- 1534-6269. ; 21:6
  • Forskningsöversikt (refereegranskat)abstract
    • Purpose of Review: The main surgical treatment for invasive malignant melanoma consists of wide surgical and examination of the sentinel node and in selected cases complete lymph node dissection. The aim of this review is to present data for the optimal surgical management of patients with malignant melanoma.Recent Findings: A surgical excision margin of 1-2cm is recommended for invasive melanoma depending on the thickness of the melanoma. Sentinel node biopsy may be considered for patients with at least T1b melanomas thickness 0.8 to 1.0mm or less than 0.8mm Breslow thickness with ulceration, classified as T1b lesion, per recent AJCC guidelines. Two randomized controlled trials have been publishedDeCOG (German Dermatologic Cooperative Oncology Group Selective Lymphadenectomy) and MSLT-2 (Multicenter Selective Lymphadenectomy Trial) comparing the complete lymph node dissection (CLND) with observation after positive sentinel node biopsy. In the MSLT-2 study, the disease control rate was improved in the immediate CLND group compared with observation but there was no difference in 3-year melanoma specific survival (86%1.3% and 86%+/- 1.2%, respectively; p=0.42). Isolated limb perfusion (ILP) or isolated limb infusion (ILI) with melphalan and actinomycin D is recommended for large and multiple in-transit metastases and satellite metastases in the extremities when local excision is considered ineffective or too extensive.Summary: In light of new adjuvant treatment options and new indications for checkpoint inhibitors, and the lack of survival benefit after CLND, we can expect open surgery to decrease in melanoma disease.
  •  
26.
  • Falk Delgado, Alberto, et al. (författare)
  • The association of funding source on effect size in randomized controlled trials : 2013-2015-a cross-sectional survey and metaanalysis
  • 2017
  • Ingår i: Trials. - : Springer Science and Business Media LLC. - 1745-6215. ; 18
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Trials financed by for-profit organizations have been associated with favorable outcomes of new treatments, although the effect size of funding source impact on outcome is unknown. The aim of this study was to estimate the effect size for a favorable outcome in randomized controlled trials (RCTs), stratified by funding source, that have been published in general medical journals. Methods: Parallel-group RCTs published in The Lancet, New England Journal of Medicine, and JAMA between 2013 and 2015 were identified. RCTs with binary primary endpoints were included. The primary outcome was the OR of patients' having a favorable outcome in the intervention group compared with the control group. The OR of a favorable outcome in each trial was calculated by the number of positive events that occurred in the intervention and control groups. A meta-analytic technique with random effects model was used to calculate summary OR. Data were stratified by funding source as for-profit, mixed, and nonprofit. Prespecified sensitivity, subgroup, and metaregression analyses were performed. Results: Five hundred nine trials were included. The OR for a favorable outcome in for-profit-funded RCTs was 1.92 (95% CI 1.72-2.14), which was higher than mixed source-funded RCTs (OR 1.34, 95% CI 1.25-1.43) and nonprofit-funded RCTs (OR 1.32, 95% CI 1.26-1.39). The OR for a favorable outcome was higher for both clinical and surrogate endpoints in for-profit-funded trials than in RCTs with other funding sources. Excluding drug trials lowered the OR for a favorable outcome in for-profit-funded RCTs. The OR for a favorable surrogate outcome in drug trials was higher in for-profit-funded trials than in nonprofit-funded trials. Conclusions: For-profit-funded RCTs have a higher OR for a favorable outcome than nonprofit-and mixed source-funded RCTs. This difference is associated mainly with the use of surrogate endpoints in for-profit-financed drug trials.
  •  
27.
  • Falk Delgado, Alberto, et al. (författare)
  • The language of peer review reports on articles published in the BMJ, 2014-2017 : an observational study
  • 2019
  • Ingår i: Scientometrics. - : SPRINGER. - 0138-9130 .- 1588-2861. ; 120:3, s. 1225-1235
  • Tidskriftsartikel (refereegranskat)abstract
    • To analyse the words and expressions used in peer reviews of manuscripts that were later published as original research in the BMJ. Secondary aims were to estimate the differences in net sentiment between peer review reports on manuscripts subject to one or more rounds of peer review and and review reports on initially rejected manuscripts that were accepted after appeal. This observational study included all peer review reports published in the BMJ from September 2014 until the end of 2017. The study analysed the frequency of specific words in peer review reports for accepted manuscripts, identifying the most commonly occurring positive and negative words and their context, as well as the most common expressions. It also quantified differences in net sentiment in peer review reports between manuscripts accepted after appeal and manuscript accepted without appeal. The dataset consisting of 1716 peer review reports contained 908,932 word tokens. Among the most frequent positive words were "well", "important", "clear", "while the negative words included "risk", "bias", and "confounding". The areas where the reviewer makes the most positive and negative comments included: "well-written paper", "well-written manuscript", "this is an important topic", "answers an important question", "high risk of bias" and "selection bias". The sentiment analysis revealed that manuscripts accepted after appeal had lower scores on review reports for joy and positive sentiment, in addition to having higher scores for negative words expressing sadness, fear, disgust and anger compared with manuscripts that were not initially rejected. Peer review comments were mainly related to methodology rather than the actual results. Peer review reports on initially rejected manuscripts were more negative and more often included expressions related to a high risk of bias.
  •  
28.
  • Femel, Julia, 1986-, et al. (författare)
  • Therapeutic vaccination against fibronectin ED-A attenuates progression of metastatic breast cancer.
  • 2014
  • Ingår i: Oncotarget. - : Impact Journals, LLC. - 1949-2553. ; 5:23, s. 12418-12427
  • Tidskriftsartikel (refereegranskat)abstract
    • Therapeutic vaccination targeting self-molecules is an attractive alternative to monoclonal antibody-based therapies for cancer and various inflammatory diseases. However, development of cancer vaccines targeting self-molecules has proven difficult. One complicating factor is that tumor cells have developed strategies to escape recognition by the immune system. Antigens specifically expressed by the tumor vasculature can therefore provide alternative targets. The alternatively spliced extra domain-A and B (ED-A and ED-B) of fibronectin are expressed during vasculogenesis in the embryo, but essentially undetectable under normal conditions in the adult. However, these domains are re-expressed during tumor angiogenesis and matrix remodeling, which renders them highly interesting for targeted cancer therapies. Using the MMTV-PyMT transgenic model of metastatic mammary carcinoma, we show that tumor burden can be significantly decreased by immunization against ED-A in a therapeutic setting. Furthermore, we found that in mice carrying anti-ED-A antibodies the number of metastases was reduced. ED-A immunization increased infiltration of macrophages and compromised tumor blood vessel function. These findings implicate an attack of the tumor vasculature by the immune system, through a polyclonal antibody response. We conclude that tumor vascular antigens are promising candidates for development of therapeutic vaccines targeting growth of primary tumors as well as disseminated disease.
  •  
29.
  • Femel, Julia, 1986-, et al. (författare)
  • Vaccination against galectin-1 promotes cytotoxic T-cell infiltration in melanoma and reduces tumor burden
  • 2022
  • Ingår i: Cancer Immunology and Immunotherapy. - : Springer Nature. - 0340-7004 .- 1432-0851. ; 71:8, s. 2029-2040
  • Tidskriftsartikel (refereegranskat)abstract
    • Galectin-1 (Gal1) is a glycan-binding protein that promotes tumor progression by several distinct mechanisms. Through direct binding to vascular endothelial growth factor (VEGF)-receptor 2, Gal1 is able to induce VEGF-like signaling, which contributes to tumor angiogenesis. Furthermore, several studies have demonstrated an immunosuppressive function of Gal1 through effects on both effector and regulatory T cells. Elevated Gal1 expression and secretion have been shown in many tumor types, and high Gal1 serum levels have been connected to poor prognosis in cancer patients. These findings suggest that therapeutic strategies directed against Gal1 would enable simultaneous targeting of angiogenesis, immune evasion and metastasis. In the current study, we have analyzed the potential of Gal1 as a cancer vaccine target. We show that it is possible to generate high anti-Gal1 antibody levels in mice immunized with a recombinant vaccine protein consisting of bacterial sequences fused to Gal1. Growth of Gal1 expressing melanomas was significantly impaired in the immunized mice compared to the control group. This was associated with improved perfusion of the tumor vasculature, as well as increased infiltration of macrophages and cytotoxic T cells (CTLs). The level of granzyme B, mainly originating from CTLs in our model, was significantly elevated in Gal1 vaccinated mice and correlated with a decrease in tumor burden. We conclude that vaccination against Gal1 is a promising pro-immunogenic approach for cancer therapy that could potentially enhance the effect of other immunotherapeutic strategies due to its ability to promote CTL influx in tumors.
  •  
30.
  • Hober, Sophia, Professor, 1965-, et al. (författare)
  • Systematic evaluation of SARS-CoV-2 antigens enables a highly specific and sensitive multiplex serological COVID-19 assay
  • 2021
  • Ingår i: Clinical & Translational Immunology. - : Wiley. - 2050-0068. ; 10:7
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective. The COVID-19 pandemic poses an immense need for accurate, sensitive and high-throughput clinical tests, and serological assays are needed for both overarching epidemiological studies and evaluating vaccines. Here, we present the development and validation of a high-throughput multiplex bead-based serological assay. Methods. More than 100 representations of SARS-CoV-2 proteins were included for initial evaluation, including antigens produced in bacterial and mammalian hosts as well as synthetic peptides. The five best-performing antigens, three representing the spike glycoprotein and two representing the nucleocapsid protein, were further evaluated for detection of IgG antibodies in samples from 331 COVID-19 patients and convalescents, and in 2090 negative controls sampled before 2020. Results. Three antigens were finally selected, represented by a soluble trimeric form and the S1-domain of the spike glycoprotein as well as by the C-terminal domain of the nucleocapsid. The sensitivity for these three antigens individually was found to be 99.7%, 99.1% and 99.7%, and the specificity was found to be 98.1%, 98.7% and 95.7%. The best assay performance was although achieved when utilising two antigens in combination, enabling a sensitivity of up to 99.7% combined with a specificity of 100%. Requiring any two of the three antigens resulted in a sensitivity of 99.7% and a specificity of 99.4%. Conclusion. These observations demonstrate that a serological test based on a combination of several SARS-CoV-2 antigens enables a highly specific and sensitive multiplex serological COVID-19 assay.
  •  
31.
  • Högström, Sofie, et al. (författare)
  • Dance and Yoga Reduced Functional Abdominal Pain in Young Girls : A Randomized Controlled Trial
  • 2022
  • Ingår i: European Journal of Pain. - : John Wiley & Sons. - 1090-3801 .- 1532-2149. ; 26:2, s. 336-348
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Functional abdominal pain disorders (FAPDs) affect children, especially girls, all over the world. The evidence for existing treatments is mixed, and effective accessible treatments are needed. Dance, a rhythmic cardio-respiratory activity, combined with yoga, which enhances relaxation and focus, may provide physiological and psychological benefits that could help to ease pain.Objectives: The aim with this study was to evaluate the effects of a dance and yoga intervention on maximum abdominal pain in 9- to 13-year- old girls with FAPDs.Methods: This study was a prospective randomised controlled trial with 121 participants recruited from outpatient clinics as well as the general public. The intervention group participated in dance and yoga twice weekly for 8 months; controls received standard care. Abdominal pain, as scored on the Faces Pain Scale–Revised, was recorded in a pain diary. A linear mixed model was used to estimate the outcomes and effect sizes.Results: Dance and yoga were superior to standard healthcare alone, with a medium to high between-group effect size and significantly greater pain reduction (b = −1.29, p = 0.002) at the end of the intervention.Conclusions: An intervention using dance and yoga is likely a feasible and beneficial complementary treatment to standard health care for 9- to 13-year-old girls with FAPDs.Significance:  FAPDs affect children, especially girls, all over the world. The negative consequences such as absence from school, high consumption of medical care and depression pose a considerable burden on children and their families and effective treatments are needed. This is the first study examining a combined dance/yoga intervention for young girls with FAPDs and the result showed a reduction of abdominal pain. These findings contribute with new evidence in the field of managing FAPDs in a vulnerable target group. 
  •  
32.
  •  
33.
  • Jain, Saumey, et al. (författare)
  • On-Chip Neural Induction Boosts Neural Stem Cell Commitment : Toward a Pipeline for iPSC-Based Therapies
  • 2024
  • Ingår i: Advanced science (Weinheim, Baden-Wurttemberg, Germany). - : Wiley-VCH Verlagsgesellschaft. - 2198-3844.
  • Tidskriftsartikel (refereegranskat)abstract
    • The clinical translation of induced pluripotent stem cells (iPSCs) holds great potential for personalized therapeutics. However, one of the main obstacles is that the current workflow to generate iPSCs is expensive, time-consuming, and requires standardization. A simplified and cost-effective microfluidic approach is presented for reprogramming fibroblasts into iPSCs and their subsequent differentiation into neural stem cells (NSCs). This method exploits microphysiological technology, providing a 100-fold reduction in reagents for reprogramming and a ninefold reduction in number of input cells. The iPSCs generated from microfluidic reprogramming of fibroblasts show upregulation of pluripotency markers and downregulation of fibroblast markers, on par with those reprogrammed in standard well-conditions. The NSCs differentiated in microfluidic chips show upregulation of neuroectodermal markers (ZIC1, PAX6, SOX1), highlighting their propensity for nervous system development. Cells obtained on conventional well plates and microfluidic chips are compared for reprogramming and neural induction by bulk RNA sequencing. Pathway enrichment analysis of NSCs from chip showed neural stem cell development enrichment and boosted commitment to neural stem cell lineage in initial phases of neural induction, attributed to a confined environment in a microfluidic chip. This method provides a cost-effective pipeline to reprogram and differentiate iPSCs for therapeutics compliant with current good manufacturing practices.
  •  
34.
  • Kvarnung, Malin, et al. (författare)
  • Ataxia in Patients With Bi-Allelic NFASC Mutations and Absence of Full-Length NF186
  • 2019
  • Ingår i: Frontiers in Genetics. - : Frontiers Media SA. - 1664-8021. ; 10
  • Tidskriftsartikel (refereegranskat)abstract
    • The etiology of hereditary ataxia syndromes is heterogeneous, and the mechanisms underlying these disorders are often unknown. Here, we utilized exome sequencing in two siblings with progressive ataxia and muscular weakness and identified a novel homozygous splice mutation (c.3020-1G > A) in neurofascin (NFASC). In RNA extracted from fibroblasts, we showed that the mutation resulted in inframe skipping of exon 26, with a deprived expression of the full-length transcript that corresponds to NFASC isoform NF186. To further investigate the disease mechanisms, we reprogrammed fibroblasts from one affected sibling to induced pluripotent stem cells, directed them to neuroepithelial stem cells and finally differentiated to neurons. In early neurogenesis, differentiating cells with selective depletion of the NF186 isoform showed significantly reduced neurite outgrowth as well as fewer emerging neurites. Furthermore, whole-cell patch-clamp recordings of patient-derived neuronal cells revealed a lower threshold for openings, indicating altered Na+ channel kinetics, suggesting a lower threshold for openings as compared to neuronal cells without the NFASC mutation. Taken together, our results suggest that loss of the full-length NFASC isoform NF186 causes perturbed neurogenesis and impaired neuronal biophysical properties resulting in a novel early-onset autosomal recessive ataxia syndrome.
  •  
35.
  • Lauren, Ida, et al. (författare)
  • Long-term SARS-CoV-2-specific and cross-reactive cellular immune responses correlate with humoral responses, disease severity, and symptomatology
  • 2022
  • Ingår i: Immunity, Inflammation and Disease. - : John Wiley & Sons. - 2050-4527. ; 10:4
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Cellular immune memory responses post coronavirus disease 2019 (COVID-19) have been difficult to assess due to the risks of contaminating the immune response readout with memory responses stemming from previous exposure to endemic coronaviruses. The work herein presents a large-scale long-term follow-up study investigating the correlation between symptomology and cellular immune responses four to five months post seroconversion based on a unique severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific peptide pool that contains no overlapping peptides with endemic human coronaviruses. Methods: Peptide stimulated memory T cell responses were assessed with dual interferon-gamma (IFN gamma) and interleukin (IL)-2 Fluorospot. Serological analyses were performed using a multiplex antigen bead array. Results: Our work demonstrates that long-term SARS-CoV-2-specific memory T cell responses feature dual IFN gamma and IL-2 responses, whereas cross-reactive memory T cell responses primarily generate IFN gamma in response to SARS-CoV-2 peptide stimulation. T cell responses correlated to long-term humoral immune responses. Disease severity as well as specific COVID-19 symptoms correlated with the magnitude of the SARS-CoV-2-specific memory T cell response four to five months post seroconversion. Conclusion: Using a large cohort and a SARS-CoV-2-specific peptide pool we were able to substantiate that initial disease severity and symptoms correlate with the magnitude of the SARS-CoV-2-specific memory T cell responses.
  •  
36.
  • Lundin, Anders, et al. (författare)
  • hiPS-Derived Astroglia Model Shows Temporal Transcriptomic Profile Related to Human Neural Development and Glia Competence Acquisition of a Maturing Astrocytic Identity
  • 2020
  • Ingår i: Advanced Biosystems. - : Wiley. - 2366-7478. ; 4:5
  • Tidskriftsartikel (refereegranskat)abstract
    • Astrocyte biology has a functional and cellular diversity only observed in humans. The understanding of the regulatory network governing outer radial glia (RG), responsible for the expansion of the outer subventricular zone (oSVZ), and astrocyte cellular development remains elusive, partly since relevant human material to study these features is not readily available. A human-induced pluripotent stem cell derived astrocytic model, NES-Astro, has been recently developed, with high expression of astrocyte-associated markers and high astrocyte-relevant functionality. Here it is studied how the NES-Astro phenotype develops during specification and its correlation to known RG and astrocyte characteristics in human brain development. It is demonstrated that directed differentiation of neurogenic long-term neuroepithelial stem cells undergo a neurogenic-to-gliogenic competence preferential change, acquiring a glial fate. Temporal transcript profiles of long- and small RNA corroborate previously shown neurogenic restriction by glia-associated let-7 expression. Furthermore, NES-Astro differentiation displays proposed mechanistic features important for the evolutionary expansion of the oSVZ together with an astroglia/astrocyte transcriptome. The NES-Astro generation is a straight-forward differentiation protocol from stable and expandable neuroepithelial stem cell lines derived from iPS cells. Thus, the NES-Astro is an easy-access cell system with high biological relevance for studies of mechanistic traits of glia and astrocyte.
  •  
37.
  • Lundin, Anders, et al. (författare)
  • Human iPS-Derived Astroglia from a Stable Neural Precursor State Show Improved Functionality Compared with Conventional Astrocytic Models
  • 2018
  • Ingår i: Stem Cell Reports. - : Cell Press. - 2213-6711. ; 10:3, s. 1030-1045
  • Tidskriftsartikel (refereegranskat)abstract
    • In vivo studies of human brain cellular function face challenging ethical and practical difficulties. Animal models are typically used but display distinct cellular differences. One specific example is astrocytes, recently recognized for contribution to neurological diseases and a link to the genetic risk factor apolipoprotein E (APOE). Current astrocytic in vitro models are questioned for lack of biological characterization. Here, we report human induced pluripotent stem cell (hiPSC)-derived astroglia (NES-Astro) developed under defined conditions through long-term neuroepithelial-like stem (ltNES) cells. We characterized NES-Astro and astrocytic models from primary sources, astrocytoma (CCF-STTG1), and hiPSCs through transcriptomics, proteomics, glutamate uptake, inflammatory competence, calcium signaling response, and APOE secretion. Finally, we assess modulation of astrocyte biology using APOE-annotated compounds, confirming hits of the cholesterol biosynthesis pathway in adult and hiPSC-derived astrocytes. Our data show large diversity among astrocytic models and emphasize a cellular context when studying astrocyte biology.
  •  
38.
  • Moberg, Anna, et al. (författare)
  • C-reactive protein influences the doctors degree of suspicion of pneumonia in primary care: a prospective observational study
  • 2020
  • Ingår i: European Journal of General Practice. - : TAYLOR & FRANCIS LTD. - 1381-4788 .- 1751-1402. ; 26:1, s. 210-216
  • Tidskriftsartikel (refereegranskat)abstract
    • Background In primary care, the diagnosis of pneumonia is often based on history and clinical examination alone. However, a previous study showed that the general practitioners degree of suspicion correlates well with findings on chest X-ray, when the C-reactive protein (CRP) value is known. Objectives The present study aimed to investigate to what extent the physicians degree of suspicion is affected by the CRP level when community-acquired pneumonia is suspected in primary care. Methods A prospective observational study was conducted at five primary health care centres in Sweden between October 2015 and December 2017. Adult patients (n = 266) consulting their health care centre with symptoms of lower respiratory tract infection, where the physician suspected pneumonia, were included consecutively. Anamnestic information and findings from clinical examination were documented in a case report form. All patients were tested for CRP. The physicians rated their degree of suspicion as unsure, quite sure, and sure before and after the CRP result. Results The degree of suspicion of pneumonia changed in 69% of the cases; most often to a lower degree (40%). In 28% of the cases, there was no longer any suspicion of pneumonia after CRP. Conclusion Our results indicate that CRP testing highly influences the physicians degree of suspicion of pneumonia in primary care and that it seems to be of most value when not sure of the diagnosis.
  •  
39.
  • Rostami, Jinar, et al. (författare)
  • Crosstalk between astrocytes and microglia results in increased degradation of α-synuclein and amyloid-β aggregates
  • 2021
  • Ingår i: Journal of Neuroinflammation. - : Springer Science and Business Media LLC. - 1742-2094. ; 18:1
  • Tidskriftsartikel (refereegranskat)abstract
    • BackgroundAlzheimer’s disease (AD) and Parkinson’s disease (PD) are characterized by brain accumulation of aggregated amyloid-beta (Aβ) and alpha-synuclein (αSYN), respectively. In order to develop effective therapies, it is crucial to understand how the Aβ/αSYN aggregates can be cleared. Compelling data indicate that neuroinflammatory cells, including astrocytes and microglia, play a central role in the pathogenesis of AD and PD. However, how the interplay between the two cell types affects their clearing capacity and consequently the disease progression remains unclear.MethodsThe aim of the present study was to investigate in which way glial crosstalk influences αSYN and Aβ pathology, focusing on accumulation and degradation. For this purpose, human-induced pluripotent cell (hiPSC)-derived astrocytes and microglia were exposed to sonicated fibrils of αSYN or Aβ and analyzed over time. The capacity of the two cell types to clear extracellular and intracellular protein aggregates when either cultured separately or in co-culture was studied using immunocytochemistry and ELISA. Moreover, the capacity of cells to interact with and process protein aggregates was tracked using time-lapse microscopy and a customized “close-culture” chamber, in which the apical surfaces of astrocyte and microglia monocultures were separated by a <1 mm space.ResultsOur data show that intracellular deposits of αSYN and Aβ are significantly reduced in co-cultures of astrocytes and microglia, compared to monocultures of either cell type. Analysis of conditioned medium and imaging data from the “close-culture” chamber experiments indicate that astrocytes secrete a high proportion of their internalized protein aggregates, while microglia do not. Moreover, co-cultured astrocytes and microglia are in constant contact with each other via tunneling nanotubes and other membrane structures. Notably, our live cell imaging data demonstrate that microglia, when attached to the cell membrane of an astrocyte, can attract and clear intracellular protein deposits from the astrocyte.ConclusionsTaken together, our data demonstrate the importance of astrocyte and microglia interactions in Aβ/αSYN clearance, highlighting the relevance of glial cellular crosstalk in the progression of AD- and PD-related brain pathology.
  •  
40.
  • Rostami, Jinar, et al. (författare)
  • Prolyl oligopeptidase inhibition by KYP-2407 increases alpha-synuclein fibril degradation in neuron-like cells
  • 2020
  • Ingår i: Biomedicine and Pharmacotherapy. - : Elsevier BV. - 0753-3322 .- 1950-6007. ; 131
  • Tidskriftsartikel (refereegranskat)abstract
    • Growing evidence emphasizes insufficient clearance of pathological alpha-synuclein (αSYN) aggregates in the progression of Parkinson's disease (PD). Consequently, cellular degradation pathways represent a potential therapeutic target. Prolyl oligopeptidase (PREP) is highly expressed in the brain and has been suggested to increase αSYN aggregation and negatively regulate the autophagy pathway. Inhibition of PREP with a small molecule inhibitor, KYP-2407, stimulates autophagy and reduces the oligomeric species of αSYN aggregates in PD mouse models. However, whether PREP inhibition has any effects on intracellular αSYN fibrils has not been studied before. In this study, the effect of KYP2407 on αSYN preformed fibrils (PFFs) was tested in SH-SY5Y cells and human astrocytes. Immunostaining analysis revealed that both cell types accumulated αSYN PFFs intracellularly but KYP-2047 decreased intracellular αSYN deposits only in SH-SY5Y cells, as astrocytes did not show any PREP activity. Western blot analysis confirmed the reduction of high molecular weight αSYN species in SH-SY5Y cell lysates, and secretion of αSYN from SH-SY5Y cells also decreased in the presence of KYP-2407. Accumulation of αSYN inside the SH-SY5Y cells resulted in an increase of the auto-lysosomal proteins p62 and LC3BII, as well as calpain 1 and 2, which have been shown to be associated with PD pathology. Notably, treatment with KYP-2407 significantly reduced p62 and LC3BII levels, indicating an increased autophagic flux, and calpain 1 and 2 levels returned to normal in the presence of KYP-2407. Our findings indicate that PREP inhibition can potentially be used as therapy to reduce the insoluble intracellular αSYN aggregates.
  •  
41.
  • Sangchooli, Arshiya, et al. (författare)
  • Parameter Space and Potential for Biomarker Development in 25 Years of fMRI Drug Cue Reactivity
  • 2024
  • Ingår i: JAMA psychiatry. - : AMER MEDICAL ASSOC. - 2168-6238 .- 2168-622X.
  • Forskningsöversikt (refereegranskat)abstract
    • Importance In the last 25 years, functional magnetic resonance imaging drug cue reactivity (FDCR) studies have characterized some core aspects in the neurobiology of drug addiction. However, no FDCR-derived biomarkers have been approved for treatment development or clinical adoption. Traversing this translational gap requires a systematic assessment of the FDCR literature evidence, its heterogeneity, and an evaluation of possible clinical uses of FDCR-derived biomarkers. Objective To summarize the state of the field of FDCR, assess their potential for biomarker development, and outline a clear process for biomarker qualification to guide future research and validation efforts. Evidence Review The PubMed and Medline databases were searched for every original FDCR investigation published from database inception until December 2022. Collected data covered study design, participant characteristics, FDCR task design, and whether each study provided evidence that might potentially help develop susceptibility, diagnostic, response, prognostic, predictive, or severity biomarkers for 1 or more addictive disorders. Findings There were 415 FDCR studies published between 1998 and 2022. Most focused on nicotine (122 [29.6%]), alcohol (120 [29.2%]), or cocaine (46 [11.1%]), and most used visual cues (354 [85.3%]). Together, these studies recruited 19 311 participants, including 13 812 individuals with past or current substance use disorders. Most studies could potentially support biomarker development, including diagnostic (143 [32.7%]), treatment response (141 [32.3%]), severity (84 [19.2%]), prognostic (30 [6.9%]), predictive (25 [5.7%]), monitoring (12 [2.7%]), and susceptibility (2 [0.5%]) biomarkers. A total of 155 interventional studies used FDCR, mostly to investigate pharmacological (67 [43.2%]) or cognitive/behavioral (51 [32.9%]) interventions; 141 studies used FDCR as a response measure, of which 125 (88.7%) reported significant interventional FDCR alterations; and 25 studies used FDCR as an intervention outcome predictor, with 24 (96%) finding significant associations between FDCR markers and treatment outcomes. Conclusions and Relevance Based on this systematic review and the proposed biomarker development framework, there is a pathway for the development and regulatory qualification of FDCR-based biomarkers of addiction and recovery. Further validation could support the use of FDCR-derived measures, potentially accelerating treatment development and improving diagnostic, prognostic, and predictive clinical judgments.
  •  
42.
  • Schuy, Jakob, et al. (författare)
  • Partial Monosomy 21 Mirrors Gene Expression of Trisomy 21 in a Patient-Derived Neuroepithelial Stem Cell Model
  • 2022
  • Ingår i: Frontiers in Genetics. - : Frontiers Media SA. - 1664-8021. ; 12
  • Tidskriftsartikel (refereegranskat)abstract
    • Induced pluripotent stem cells (iPSCs) from patients are an attractive disease model to study tissues with poor accessibility such as the brain. Using this approach, we and others have shown that trisomy 21 results in genome-wide transcriptional dysregulations. The effects of loss of genes on chromosome 21 is much less characterized. Here, we use patient-derived neural cells from an individual with neurodevelopmental delay and a ring chromosome 21 with two deletions spanning 3.8 Mb at the terminal end of 21q22.3, containing 60 protein-coding genes. To investigate the molecular perturbations of the partial monosomy on neural cells, we established patient-derived iPSCs from fibroblasts retaining the ring chromosome 21, and we then induced iPSCs into neuroepithelial stem cells. RNA-Seq analysis of NESCs with the ring chromosome revealed downregulation of 18 genes within the deleted region together with global transcriptomic dysregulations when compared to euploid NESCs. Since the deletions on chromosome 21 represent a genetic “contrary” to trisomy of the corresponding region, we further compared the dysregulated transcriptomic profile in with that of two NESC lines with trisomy 21. The analysis revealed opposed expression changes for 23 genes on chromosome 21 as well as 149 non-chromosome 21 genes. Taken together, our results bring insights into the effects on the global and chromosome 21 specific gene expression from a partial monosomy of chromosome 21qter during early neuronal differentiation.
  •  
43.
  • Susanto, Evelyn, et al. (författare)
  • Modeling SHH-driven medulloblastoma with patient iPS cell-derived neural stem cells
  • 2020
  • Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : NATL ACAD SCIENCES. - 0027-8424 .- 1091-6490. ; 117:33, s. 20127-20138
  • Tidskriftsartikel (refereegranskat)abstract
    • Medulloblastoma is the most common malignant brain tumor in children. Here we describe a medulloblastoma model using In-duced pluripotent stem (iPS) cell-derived human neuroepithelial stem (NES) cells generated from a Gorlin syndrome patient carry-ing a germline mutation in the sonic hedgehog (SHH) receptor PTCH1. We found that Gorlin NES cells formed tumors in mouse cerebellum mimicking human medulloblastoma. Retransplantation of tumor-isolated NES (tNES) cells resulted in accelerated tumor formation, cells with reduced growth factor dependency, en-hanced neurosphere formation in vitro, and increased sensitivity to Vismodegib. Using our model, we identified LGALS1 to be a GLI target gene that is up-regulated in both Gorlin tNES cells and SHH-subgroup of medulloblastoma patients. Taken together, we dem-onstrate that NES cells derived from Gorlin patients can be used as a resource to model medulloblastoma initiation and progression and to identify putative targets.
  •  
44.
  • Uhlén, Mathias, et al. (författare)
  • A human protein atlas for normal and cancer tissues based on antibody proteomics
  • 2005
  • Ingår i: Molecular & Cellular Proteomics. - 1535-9476 .- 1535-9484. ; 4:12, s. 1920-1932
  • Tidskriftsartikel (refereegranskat)abstract
    • Antibody-based proteomics provides a powerful approach for the functional study of the human proteome involving the systematic generation of protein-specific affinity reagents. We used this strategy to construct a comprehensive, antibody-based protein atlas for expression and localization profiles in 48 normal human tissues and 20 different cancers. Here we report a new publicly available database containing, in the first version, similar to 400,000 high resolution images corresponding to more than 700 antibodies toward human proteins. Each image has been annotated by a certified pathologist to provide a knowledge base for functional studies and to allow queries about protein profiles in normal and disease tissues. Our results suggest it should be possible to extend this analysis to the majority of all human proteins thus providing a valuable tool for medical and biological research.
  •  
45.
  •  
46.
  • Aamodt, Ina Thon, et al. (författare)
  • Health Care Professionals Perceptions of Home Telemonitoring in Heart Failure Care: Cross-Sectional Survey
  • 2019
  • Ingår i: Journal of Medical Internet Research. - : JMIR PUBLICATIONS, INC. - 1438-8871. ; 21:2
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Noninvasive telemonitoring (TM) can be used in heart failure (HF) patients to perform early detection of decompensation at home, prevent unnecessary health care utilization, and decrease health care costs. However, the evidence is not sufficient to be part of HF guidelines for follow-up care, and we have no knowledge of how TM is used in the Nordic Baltic region. Objective: The aim of this study was to describe health care professionals (HCPs) perception of and presumed experience with noninvasive TM in daily HF patient care, perspectives of the relevance of and reasons for applying noninvasive TM, and barriers to the use of noninvasive TM. Methods: A cross-sectional survey was performed between September and December 2016 in Norway and Lithuania with physicians and nurses treating HF patients at either a hospital ward or an outpatient clinic. A total of 784 questionnaires were sent nationwide by postal mail to 107 hospitals. The questionnaire consisted of 43 items with close- and open-ended questions. In Norway, the response rate was 68.7% (226/329), with 57 of 60 hospitals participating, whereas the response rate was 68.1% (310/455) in Lithuania, with 41 of 47 hospitals participating. Responses to the closed questions were analyzed using descriptive statistics, and the open-ended questions were analyzed using summative content analysis. Results: This study showed that noninvasive TM is not part of the current daily clinical practice in Norway or Lithuania. A minority of HCPs responded to be familiar with noninvasive TM in HF care in Norway (48/226, 21.2%) and Lithuania (64/310, 20.6%). Approximately half of the HCPs in both countries perceived noninvasive TM to be relevant in follow-up of HF patients in Norway (131/226, 58.0%) and Lithuania (172/310, 55.5%). For physicians in both countries and nurses in Norway, the 3 most mentioned reasons for introducing noninvasive TM were to improve self-care, to reduce hospitalizations, and to provide high-quality care, whereas the Lithuanian nurses described ability to treat more patients and to reduce their workload as reasons for introducing noninvasive TM. The main barriers to implement noninvasive TM were lack of funding from health care authorities or the Territorial Patient Fund. Moreover, HCPs perceive that HF patients themselves could represent barriers because of their physical or mental condition in addition to a lack of internet access. Conclusions: HCPs in Norway and Lithuania are currently nonusers of TM in daily HF care. However, they perceive a future with TM to improve the quality of care for HF patients. Financial barriers and HF patients condition may have an impact on the use of TM, whereas sufficient funding from health care authorities and improved knowledge may encourage the more widespread use of TM in the Nordic Baltic region and beyond.
  •  
47.
  • Aamodt, Ina Thon, et al. (författare)
  • Self-Care Monitoring of Heart Failure Symptoms and Lung Impedance at Home Following Hospital Discharge: Longitudinal Study
  • 2020
  • Ingår i: Journal of Medical Internet Research. - : JMIR PUBLICATIONS, INC. - 1438-8871. ; 22:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Self-care is key to the daily management of chronic heart failure (HF). After discharge from hospital, patients may struggle to recognize and respond to worsening HF symptoms. Failure to monitor and respond to HF symptoms may lead to unnecessary hospitalizations. Objective: This study aimed to (1) determine the feasibility of lung impedance measurements and a symptom diary to monitor HF symptoms daily at home for 30 days following hospital discharge and (2) determine daily changes in HF symptoms of pulmonary edema, lung impedance measurements, and if self-care behavior improves over time when patients use these self-care monitoring tools. Methods: This study used a prospective longitudinal design including patients from cardiology wards in 2 university hospitals-one in Norway and one in Lithuania. Data on HF symptoms and pulmonary edema were collected from 10 participants (mean age 64.5 years; 90% (9/10) male) with severe HF (New York Heart Association classes III and IV) who were discharged home after being hospitalized for an HF condition. HF symptoms were self-reported using the Memorial Symptom Assessment Scale for Heart Failure. Pulmonary edema was measured by participants using a noninvasive lung impedance monitor, the Cardio Set Edema Guard Monitor. Informal caregivers aided the participants with the noninvasive measurements. Results: The prevalence and burden of shortness of breath varied from participants experiencing them daily to never, whereas lung impedance measurements varied for individual participants and the group participants, as a whole. Self-care behavior score improved significantly (P=.007) from a median of 56 (IQR range 22-75) at discharge to a median of 81 (IQR range 72-98) 30 days later. Conclusions: Noninvasive measurement of lung impedance daily and the use of a symptom diary were feasible at home for 30 days in HF patients. Self-care behavior significantly improved after 30 days of using a symptom diary and measuring lung impedance at home. Further research is needed to determine if daily self-care monitoring of HF signs and symptoms, combined with daily lung impedance measurements, may reduce hospital readmissions.
  •  
48.
  • Abelsson, Anna, 1971-, et al. (författare)
  • Empowerment in the perioperative dialog
  • 2021
  • Ingår i: Nursing Open. - : John Wiley & Sons. - 2054-1058. ; 8:1, s. 96-103
  • Tidskriftsartikel (refereegranskat)abstract
    • Aim: To describe how the nurse anaesthetist empowers the patient in the perioperative dialogue. Design: A qualitative descriptive design with interviews with 12 nurse anaesthetist (NA). Method: A hermeneutic text interpretation with a foundation in Gibson's empowerment model. Result: The results highlight Gibson's nursing domain: Helper, Supporter, Counsellor, Educator, Resource Consultant, Resource Mobilizer, Facilitator, Enabler and Advocate. The overall understanding is revealed as a relationship can be built through closeness between the patient and the NA. The NA helps the patient master the situation by talking to and touching the patient. The patient is helped to find their own strengths and to cope with their fears. The patients decide over their own bodies. When the patients do not want to or cope with protecting themselves, the NA protects and represents the patient.
  •  
49.
  • Abolfathi, Bela, et al. (författare)
  • The Fourteenth Data Release of the Sloan Digital Sky Survey : First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment
  • 2018
  • Ingår i: Astrophysical Journal Supplement Series. - : IOP Publishing Ltd. - 0067-0049 .- 1538-4365. ; 235:2
  • Tidskriftsartikel (refereegranskat)abstract
    • The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This paper describes the second data release from this phase, and the 14th from SDSS overall (making this Data Release Fourteen or DR14). This release makes the data taken by SDSS-IV in its first two years of operation (2014-2016 July) public. Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey; the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data-driven machine-learning algorithm known as "The Cannon"; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from the SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS web site (www.sdss.org) has been updated for this release and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020 and will be followed by SDSS-V.
  •  
50.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-50 av 186
Typ av publikation
tidskriftsartikel (142)
annan publikation (10)
doktorsavhandling (10)
rapport (8)
konferensbidrag (7)
forskningsöversikt (7)
visa fler...
bokkapitel (2)
visa färre...
Typ av innehåll
refereegranskat (147)
övrigt vetenskapligt/konstnärligt (33)
populärvet., debatt m.m. (6)
Författare/redaktör
Nilsson, Peter (12)
Skoog, Ingmar, 1954 (10)
Larsson, Elna-Marie (9)
Zettergren, Anna, 19 ... (9)
Falk Erhag, Hanna (8)
Hellström, Cecilia (7)
visa fler...
Alafuzoff, Irina (7)
Rydberg Sterner, The ... (7)
Kern, Silke (7)
Wetterberg, Hanna (7)
Dahl, Niklas (7)
Hober, Sophia, Profe ... (6)
Olofsson, Jennie (6)
Green, Henrik (6)
Zetterberg, Henrik, ... (5)
Koyanagi, Ai (5)
Waern, Margda, 1955 (5)
Hellman, Lars (5)
Nilsson, Carin (5)
Sheikh, Aziz (5)
Nygren, Åse (5)
Hay, Simon I. (5)
Dandona, Lalit (5)
Dandona, Rakhi (5)
Hamidi, Samer (5)
Jonas, Jost B. (5)
Khader, Yousef Saleh (5)
Kumar, G. Anil (5)
Lozano, Rafael (5)
Malekzadeh, Reza (5)
Miller, Ted R. (5)
Mokdad, Ali H. (5)
Pereira, David M. (5)
Sepanlou, Sadaf G. (5)
Tran, Bach Xuan (5)
Vos, Theo (5)
Werdecker, Andrea (5)
Xu, Gelin (5)
Yonemoto, Naohiro (5)
Yu, Chuanhua (5)
Murray, Christopher ... (5)
Kosen, Soewarta (5)
Lim, Stephen S. (5)
Majeed, Azeem (5)
Mirrakhimov, Erkin M ... (5)
Singh, Jasvinder A. (5)
Tabares-Seisdedos, R ... (5)
Topor-Madry, Roman (5)
van Westen, Danielle (5)
Molokhia, Mariam (5)
visa färre...
Lärosäte
Uppsala universitet (83)
Karolinska Institutet (83)
Lunds universitet (42)
Göteborgs universitet (30)
Kungliga Tekniska Högskolan (26)
Linköpings universitet (26)
visa fler...
Umeå universitet (11)
Stockholms universitet (8)
Örebro universitet (6)
Högskolan Dalarna (6)
Malmö universitet (5)
Södertörns högskola (5)
Chalmers tekniska högskola (5)
Högskolan i Skövde (4)
Linnéuniversitetet (4)
Sveriges Lantbruksuniversitet (4)
Högskolan i Borås (3)
Högskolan i Halmstad (2)
Sophiahemmet Högskola (2)
Högskolan Kristianstad (1)
Luleå tekniska universitet (1)
Jönköping University (1)
Mittuniversitetet (1)
Karlstads universitet (1)
Kungl. Konsthögskolan (1)
visa färre...
Språk
Engelska (170)
Svenska (16)
Forskningsämne (UKÄ/SCB)
Medicin och hälsovetenskap (137)
Naturvetenskap (24)
Samhällsvetenskap (14)
Teknik (7)
Humaniora (6)
Lantbruksvetenskap (2)

År

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy