| 1. |
- Ekman, Inger, 1952, et al.
(författare)
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The person-centred approach to an ageing society
- 2013
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Ingår i: European Journal for Person Centered Healthcare. - : University of Buckingham Press. - 2052-5656 .- 2052-5648. ; 1:1, s. 132-137
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Tidskriftsartikel (refereegranskat)abstract
- Modern care is often based on investigations such as laboratory markers and imaging - for example, x-ray or ultrasound. The results contribute to a diagnosis and, if judged necessary, treatment is initiated. This diseased-oriented approach is the prevailing mode of management in modern medicine. In contrast, person-centered care (PCC) takes the point of departure from each person´s subjective experience of illness and its impact on daily life. A patient is considered as a person with emotions and feelings. PCC is considered present within clinical care according to a definition articulated by the Centre for Person Centred Care at the University of Gothenburg (GPCC) when three core components are present: elicitation of a detailed patient narrative; formulated partnership between caregiver and patient and documentation of the partnership in the patient record. Accordingly, when there is an illness requiring care and the person is attended using these components, PCC is being applied. In most situations today, PCC is not applied as the narrative is not fully elicited or the partnership and/or the documentation are not included. It is proposed that the challenge to Society arising from changing demographics can be addressed by implementing PCC and creating an alternative to existing healthcare. The importance and benefits of such an approach on a wider scale is not yet clear as research has been limited to date. Studies in selected patient populations (heart failure and hip fractures), however, have shown promising results. As the population ages, there will be a dramatic increase in healthcare consumption. Even with technological developments, there will be a need for tremendous resources to be dedicated to care. A new organization and attitude from healthcare policymakers and providers above and beyond the present model appears required in order to respond to this demand. As part of such change, person-centred care, with the interaction between healthcare providers and the person of the patient, can facilitate, compensate and develop more effective healthcare services for the future.
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| 2. |
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| 3. |
- Asciutto, Giuseppe, et al.
(författare)
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Intravascular ultrasound in the detection of bridging stent graft instability during fenestrated and branched endovascular aneurysm repair procedures : a multicentre study on 274 target vessels
- 2024
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Ingår i: European Journal of Vascular and Endovascular Surgery. - : Elsevier. - 1078-5884 .- 1532-2165. ; 67:1, s. 99-104
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Tidskriftsartikel (refereegranskat)abstract
- Objective: The use of intravascular ultrasound (IVUS) reduces contrast medium use and radiation exposure during conventional endovascular aneurysm repair (EVAR). The aim of this study was to evaluate the safety and efficacy of IVUS in detecting bridging stent graft (bSG) instability during fenestrated and branched EVAR (F/B-EVAR).Methods: This was a prospective observational multicentre study. The following outcomes were evaluated: (1) technical success of the IVUS in each bSG, (2) IVUS findings compared with intra-operative angiography, (3) incidence of post-operative computed tomography angiography (CTA) findings not detected with IVUS, and (4) absence of IVUS related adverse events. Target visceral vessel (TVV) instability was defined as any branch or fenestration issues requiring an additional manoeuvre or re-intervention. Any IVUS assessment that detected stenosis, kinking, or any geometric TVV issue was considered to be branch instability. All procedures were performed in ad hoc hybrid rooms.Results: Eighty patients (69% males; median age 72 years; interquartile range 59, 77 years) from four aortic centres treated with F/B-EVAR between January 2019 and September 2021 were included: 70 BEVAR (21 off the shelf; 49 custom made), eight FEVAR (custom made), and two F/B-EVAR (custom made), for a total of 300 potential TVVs. Two TVVs (0.7%) were left unstented and excluded from the analysis. The TVVs could not be accessed with the IVUS catheter in seven cases (2.3%). Furthermore, 17 (5.7%) TVVs could not be examined due to a malfunction of the IVUS catheter. The technical success of the IVUS assessment was 91.9% (274/298), with no IVUS related adverse events. Seven TVVs (2.5%) showed signs of bSG instability by means of IVUS, leading to immediate revisions. The first post-operative CTA at least 30 days after the index procedure was available in 268 of the 274 TVVs originally assessed by IVUS. In seven of the 268 TVVs (2.6%) a re-intervention became necessary due to bSG instability.Conclusion: This study suggests that IVUS is a safe and potentially valuable adjunctive imaging technology for intra-operative detection of TVV instability. Further long term investigations on larger cohorts are required to validate these promising results and to compare IVUS with alternative technologies in terms of efficiency, radiation exposure, procedure time, and costs.
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| 4. |
- Bekassy, Zivile, et al.
(författare)
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Is kidney biopsy necessary in children with idiopathic nephrotic syndrome?
- 2023
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Ingår i: Acta Pædiatrica. - 0803-5253. ; 112:12, s. 2611-2618
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Tidskriftsartikel (refereegranskat)abstract
- AIM: To investigate the need, in the Northern European setting, to perform kidney biopsy in children with steroid-sensitive nephrotic syndrome.METHODS: In this retrospective study 124 individuals aged 1-18 years with idiopathic nephrotic syndrome, followed in the paediatric hospitals in southern Sweden from 1999 to 2018, were included.RESULTS: There was a median follow-up time of 6.5 (0.2-16.8) years. The majority (92%) of children were steroid-sensitive and of them, 60.5% were frequently relapsing or steroid-dependent. Microscopic haematuria was found at onset in 81.1% and hypertension in 8.7%. At least one kidney biopsy was performed in 93 (75%). The most common indication was a steroid-dependent or relapsing course (58.4%). One of 79 steroid-sensitive children had another histological diagnosis than minimal change nephropathy 1.3%, 95% confidence interval (0.002, 0.068). Bleeding occurred after eight biopsies (6.6%). Twenty individuals (30.7%) were transferred to adult units, 18 still on immunosuppression.CONCLUSION: We have in our cohort of unselected children with idiopathic nephrotic syndrome confirmed that a kidney biopsy rarely gives important medical information in steroid-sensitive children without any other complicating factor and that the liberal policy of kidney biopsy in the Nordic countries safely can be changed.
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| 5. |
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| 6. |
- Corvaisier, Matthieu, et al.
(författare)
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The γ-tubulin meshwork assists in the recruitment of PCNA to chromatin in mammalian cells
- 2021
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Ingår i: Communications biology. - : Springer Science and Business Media LLC. - 2399-3642. ; 4:1, s. 767-
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Tidskriftsartikel (refereegranskat)abstract
- Changes in the location of γ-tubulin ensure cell survival and preserve genome integrity. We investigated whether the nuclear accumulation of γ-tubulin facilitates the transport of proliferating cell nuclear antigen (PCNA) between the cytosolic and the nuclear compartment in mammalian cells. We found that the γ-tubulin meshwork assists in the recruitment of PCNA to chromatin. Also, decreased levels of γ-tubulin reduce the nuclear pool of PCNA. In addition, the γ-tubulin C terminus encodes a PCNA-interacting peptide (PIP) motif, and a γ-tubulin–PIP-mutant affects the nuclear accumulation of PCNA. In a cell-free system, PCNA and γ-tubulin formed a complex. In tumors, there is a significant positive correlation between TUBG1 and PCNA expression. Thus, we report a novel mechanism that constitutes the basis for tumor growth by which the γ-tubulin meshwork maintains indefinite proliferation by acting as an opportune scaffold for the transport of PCNA from the cytosol to the chromatin.
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| 7. |
- Edvinsson, Dan, et al.
(författare)
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Gender differences of axis I and II comorbidity in subjects diagnosed with attention-deficit hyperactivity disorder as adults
- 2013
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Ingår i: Acta Neuropsychiatrica. - 0924-2708 .- 1601-5215. ; 25:3, s. 165-174
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Tidskriftsartikel (refereegranskat)abstract
- Objective: To investigate gender differences in psychiatric comorbidity patients diagnosed with attention-deficit hyperactivity disorder (ADHD) as adults. Methods: Interviews about current ADHD symptoms and psychiatric comorbidity on axis I and II (Structured Clinical Interview for DSM-IV axis I and axis II) were conducted in a clinical cohort of 168 patients (78 women, 90 men). Independent information on childhood and current symptoms was collected from parents, partners and patient files. Results: The lifetime prevalence of psychiatric comorbidity on axis I reached 92%, and current comorbidity, including autism spectrum disorders and Tourette's syndrome, was 47%. Women had a higher lifetime prevalence of mood and eating disorders compared with men, where substance-use disorders were more frequent. Ten per cent of patients fulfilled diagnostic criteria for a personality disorder. When excluding the general diagnostic criteria, 46% of the patients endorsed the specific criteria for at least one personality disorder. Gender differences were identified with predominance of histrionic personality traits in women and conduct disorder in men. Conclusion: Patients diagnosed with ADHD as adults display an extremely high lifetime axis I comorbidity with a gender-specific pattern similar to the general population. No gender differences were identified with regard to personality disorders; however, an increased prevalence of deviant personality traits was confirmed. This study stresses the importance of evaluating comorbidity among patients diagnosed with ADHD as adults to secure optimal treatment.
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| 8. |
- Ekberg, Karin, et al.
(författare)
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C-Peptide replacement therapy and sensory nerve function in type 1 diabetic neuropathy
- 2007
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Ingår i: Diabetes Care. - : American Diabetes Association. - 0149-5992 .- 1935-5548. ; 30:1, s. 71-76
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE - C-peptide replacement in animals results in amelioration of diabetes-induced functional and structural abnormalities in peripheral nerves. The present study was undertaken to examine whether C-peptide administration to patients with type 1 diabetes and peripheral neuropathy improves sensory nerve function. RESEARCH DESIGN AND METHODS - This was an exploratory, double-blinded, randomized, and placebo-controlled study with three study groups that was carried out at five centers in Sweden. C-peptide was given as a replacement dose (1.5 mg/day, divided into four subcutaneous doses) or a dose three times higher (4.5 mg/day) during 6 months. Neurological examination and neurophysiological measurements were performed before and after 6 months of treatment with C-peptide or placebo. RESULTS - The age of the 139 patients who completed the protocol was 44.2 ± 0.6 (mean ± SE) years and their duration of diabetes was 30.6 ± 0.8 years. Clinical neurological impairment (NIA) (score >7 points) of the lower extremities was present in 86% of the patients at baseline. Sensory nerve conduction velocity (SCV) was 2.6 ± 0.08 SD below body height-corrected normal values at baseline and improved similarly within the two C-peptide groups (P < 0.007). The number of patients responding with a SCV peak potential improvement >1.0 m/s was greater in C-peptide-treated patients than in those receiving placebo (P < 0.03). In the least severely affected patients (SCV < 2.5 SD below normal at baseline, n = 70) SCV improved by 1.0 m/s (P < 0.014 vs. placebo). NIA score and vibration perception both improved within the C-peptide-treated groups (P < 0.011 and P < 0.002). A1C levels (7.6 ± 0.1% at baseline) decreased slightly but similarly in C-peptide- and placebo-treated patients during the study. CONCLUSIONS - C-peptide treatment for 6 months improves sensory nerve function in early-stage type 1 diabetic neuropathy.
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| 9. |
- Ekselius, Lisa, et al.
(författare)
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Personality disorders in DSM-III-R as categorical or dimensional.
- 1993
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Ingår i: Acta Psychiatrica Scandinavica. - : Wiley. - 0001-690X .- 1600-0447. ; 88:3, s. 183-7
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Tidskriftsartikel (refereegranskat)abstract
- Despite the atheoretical approach of the DSM-III-R, the personality disorders have their roots in specific theoretical schools. Due to clinical tradition, analogies with Axis I and the tradition in psychiatry and medicine, the personality disorders are presented as categories although there is more empirical support for a dimensional approach. This study attempted to determine whether the separate personality disorders meet Kendell's criteria for distinct entities, i.e., bimodality with distinct points of rarity. None of the personality disorders met the criteria for a distinct disease entity. Instead, all of the personality disorders presented as continuous, dimensional personality traits present among healthy subjects and more pronounced in patients with mental disorders.
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| 10. |
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| 11. |
- Gertzell, Elin, et al.
(författare)
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Animal health beyond the single disease approach – A role for veterinary herd health management in low-income countries?
- 2021
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Ingår i: Research in Veterinary Science. - : Elsevier BV. - 0034-5288 .- 1532-2661. ; 136, s. 453-463
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Tidskriftsartikel (refereegranskat)abstract
- In order to identify and evaluate health related constraints faced by Ugandan pig farmers, a veterinary herd health management approach (VHHM) was applied in 20 randomly selected pig farms in the Lira district, Uganda. Regular herd visits were conducted between July 2018 and June 2019, using e.g. interviews, observations, clinical examinations and laboratory analyzes to gather qualitative and quantitative data on relevant aspects of the production. The pig farmers kept on average 18.6 pigs, including 2.6 sows/year. The production figures varied considerably but were generally poor. The sows produced 1.6 litters/year and 8.2 piglets born alive per litter, the average daily gain was 101 g/day, and the mortality in growers was 9.7%. Four major constraints were identified; poor nutrition, infectious diseases, inferior biosecurity, and poor reproductive management. The quantity and quality of feed was suboptimal. Endo- and ectoparasites were very common, causing diarrhea, bronchitis, pneumonia, skin lesions and pruritus. Post-weaning diarrhea associated with enterotoxigenic Escherichia coli was important in the two largest herds, and parvoviral antibodies were found in seven herds, two experiencing problems with mummified fetuses. Biosecurity practices were insufficient and inconsistent, with free-ranging pigs and the use of village boars being the major risks. Reproductive figures were affected by poor estrus detection and service management. Overall, farmers lacked important knowledge on good management practices. In conclusion, the VHHM identified several important constraints that should be addressed in order to increase the productivity of Ugandan pig herds.
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| 12. |
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| 13. |
- Hedberg Alm, Ylva, et al.
(författare)
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Clinical features and treatment response to differentiate idiopathic peritonitis from non-strangulating intestinal infarction of the pelvic flexure associated with Strongylus vulgaris infection in the horse
- 2022
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Ingår i: BMC Veterinary Research. - : Springer Science and Business Media LLC. - 1746-6148. ; 18
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Tidskriftsartikel (refereegranskat)abstract
- Background Peritonitis in horses secondary to non-strangulating infarction (NSII) has a guarded prognosis, even after intestinal resection. In contrast, horses with idiopathic peritonitis respond well to medical treatment. Affected horses in both cases often show signs of both colic and systemic inflammation, but early diagnosis is crucial for optimal treatment and an accurate prognosis. One cause of NSII is thrombus formation secondary to Strongylus vulgaris larval migration. There has been a documented increase in S. vulgaris prevalence in Sweden since the implementation of selective anthelmintic treatment in 2007, which subsequently could result in a rise in NSII cases. In a retrospective clinical study, medical records from cases diagnosed with NSII of the pelvic flexure or idiopathic peritonitis from three equine referral hospitals in Sweden during 2017-2020 were reviewed. Information including demographic data, relevant medical history, and clinical- and laboratory parameters were obtained from patient records. To facilitate the differentiation between cases of idiopathic peritonitis and cases with confirmed NSII of the pelvic flexure, the aim of the study was to compare clinical and laboratory parameters, clinical progression and initial response to antimicrobial treatment. A secondary aim was to compare survival-rates. Results Horses with NSII (n = 20) were significantly more likely to present during the winter months with a poorer response to medical treatment within 48 h. Cases of idiopathic peritonitis (n = 107) had a 100% survival rate with medical treatment, although one case required surgical correction of a colon displacement. In comparison, all confirmed NSII cases were non-responsive to antimicrobial treatment, with a survival rate to discharge of 50% after colon resection. Specific rectal findings and peripheral blood neutropenia were strongly associated with NSII. Conclusions In Sweden, idiopathic peritonitis cases still predominate over S. vulgaris associated NSII cases and have an excellent survival rate with antimicrobial treatment. However, horses presenting with septic peritonitis during the winter months with a palpable rectal mass and displaying fever and colic signs beyond 48 h of medical treatment are likely to suffer from NSII of the pelvic flexure and should be considered for abdominal surgery.
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| 14. |
- Ivic, Robert, et al.
(författare)
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Soluble urokinase plasminogen activator receptor and lactate as prognostic biomarkers in patients presenting with non-specific chief complaints in the pre-hospital setting - the PRIUS-study
- 2021
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Ingår i: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. - : BioMed Central. - 1757-7241. ; 29:1
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Emergency Medical Services (EMS) are faced daily with patients presenting with non-specific chief complaints (NSC). Patients presenting with NSCs often have normal vital signs. It has previously been established that NSCs may have a serious underlying condition that has yet to be identified. The aim of the current study was to determine if soluble urokinase plasminogen activator receptor (suPAR) and lactate could be used to identify serious conditions among patients presenting with NSCs to the EMS. The secondary aim was to describe the prognostic value for mortality in the group.METHOD: A blinded prospective observational cohort study was conducted of patients brought to the ED by ambulance after calling the national emergency number 112 and who were assessed as having NSC by the EMS. Biomarkers were measured during index EMS assessment before transportation to the ED. Patients were followed via EMS and hospital electronic health records. Descriptive and logistic regression analyses were used.RESULTS: A total of 414 patients were included, with a median age of 82 years. A serious condition was present in 15.2% of the patients. Elevated suPAR above 3 ng/ml had a positive likelihood ratio (LR+) of 1.17 and a positive predictive value (PPV) of 17.3% as being predictive of a prevalent serious condition. Elevated suPAR above 9 ng/ml had LR+ 4.67 and a PPV of 16.7% as being predictive of 30-day mortality. Lactate was not significantly predictive.CONCLUSION: Pre-hospital suPAR and lactate cannot differentiate serious conditions in need of urgent treatment and assessment in the ED among patients presenting with non-specific chief complaints. suPAR has shown to be predictive of 30-day mortality, which could add some value to the clinical assessment.TRIAL REGISTRATION: NCT03089359. Registered 20 March 2017, retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT03089359 .
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| 15. |
- Larsen, Kristoffer, et al.
(författare)
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Presence of activated mobile fibroblasts in bronchoalveolar lavage from patients with mild asthma
- 2004
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Ingår i: American Journal of Respiratory and Critical Care Medicine. - 1535-4970. ; 170:10, s. 1049-1056
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Tidskriftsartikel (refereegranskat)abstract
- Activated fibroblasts are suggested to be involved in the deposition of extracellular matrix in the formation of peribronchial fibrosis in asthma. We report the novel finding of activated elongated fibroblasts accompanied by elevated numbers of eosinophils in bronchoalveolar lavage fluid from 5 out of 12 patients with mild asthma (= 42%), whereas no fibroblasts were observed in the control subjects without asthma (n = 17). The elongated fibroblasts migrated twice as far when compared with fibroblasts from corresponding bronchial biopsies from the same patients, accompanied by an induced expression of RhoA and Rac1, indicating that the increased expression of these proteins are linked to increased migratory capabilities. Moreover, the elongated fibroblasts had an elevated production of the proteoglycans biglycan, versican, perlecan, and decorin, which correlated to an active cytoplasm in these cells. Differential expression patterns between the two fibroblast groups in motility-regulating proteins, such as cofilin, nuclear chloride ion channel protein, and heat-shock protein 20, were identified by two-dimensional electrophoresis and mass spectrometry. These findings indicate the presence of activated and mobile fibroblasts accompanied by an induced inflammatory response outside the airway epithelium in patients with mild asthma, results that may play a role in formation of airway fibrosis.
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| 16. |
- Ley, Cecilia, et al.
(författare)
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Falciform fat:femur length ratio provides a novel method for objective postmortem estimation of total body fat in overweight and obese cats
- 2022
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Ingår i: Journal of Veterinary Diagnostic Investigation. - : SAGE Publications. - 1040-6387 .- 1943-4936. ; 34, s. 237-245
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Tidskriftsartikel (refereegranskat)abstract
- Determination of the nutritional condition, including estimation of amounts of total body fat (tBF), at routine postmortem examination of cats is typically based on subjective visual assessment. Subjective assessment may result in uncertainties regarding degree of overweight, and objective methods that provide a numerical value reflecting the tBF could be valuable to accurately judge excess body fat. We investigated if the falciform fat pad weight (FFPW) was correlated to tBF and could be used to detect overweight and obesity in cats. The FFPW and the femur length (FL) were recorded at postmortem examination in 54 cats and the FFPW:FL ratio (FFR) calculated. Each cat was additionally assigned to a fat category (FC) according to subjective assessment. Computed tomography was used to determine tBF as the body fat percentage (%BF), the body fat volume (BFV), and BFV normalized to animal size (nBFV) in 39 cats. There was strong correlation between the FFPW and the BFV (r = 0.888) and between the FFR and the nBFV (r = 0.897). The correlation between the nBFV and %BF was very strong (r = 0.974). Using a lower FFR cutoff value of 3.5 for obesity and 1.6 for overweight, there was a discrepancy in FC between using the FFR and subjective assessment in 6 of 54 cats (11%). We conclude that the FFPW increases proportionally with tBF and that the FFR provides a method for objective tBF estimation. We suggest introducing the FFR to feline postmortem examination protocols as an objective estimate of tBF.
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| 17. |
- Lindfors, Eva-Lisa, et al.
(författare)
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Polysaccharide degradation in waterlogged oak wood from the ancient warship Vasa
- 2008
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Ingår i: Holzforschung. - : Walter de Gruyter GmbH. - 0018-3830 .- 1437-434X. ; 62:1, s. 57-63
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Tidskriftsartikel (refereegranskat)abstract
- A rather extensive degradation of cellulose and hemicelluloses was found in waterlogged oak wood samples from the ancient warship Vasa by size exclusion chromatography with the solvent system lithium chloride/ N,N-dimethylacetamide (LiCl/DMAc). The degradation has mainly occurred after salvage of the wreck, probably as a consequence of keeping iron contaminated wood in contact with air. The most likely explanation is Fenton type of reactions degrading the wood polymers and oxidising reduced sulphur forms to sulphuric acid. An increased degradation rate of the Vasa wood can be anticipated in the future if the sulphuric acid cannot be neutralised and the oxidative reactions cannot be quenched.
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| 18. |
- Lindfors, Eva-Lisa, et al.
(författare)
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Polysaccharide degradation in waterlogged oak wood from the ancient warship Vasa
- 2008
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Ingår i: Holzforschung. - 0018-3830 .- 1437-434X. ; 62:1, s. 57-63
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Tidskriftsartikel (refereegranskat)abstract
- A rather extensive degradation of cellulose and hemicelluloses was found in waterlogged oak wood samples from the ancient warship Vasa by size exclusion chromatography with the solvent system lithium chloride/N,N-dimethylacetamide (LiCl/DMAc). The degradation has mainly occurred after salvage of the wreck, probably as a consequence of keeping iron contaminated wood in contact with air. The most likely explanation is Fenton type of reactions degrading the wood polymers and oxidising reduced sulphur forms to sulphuric acid. An increased degradation rate of the Vasa wood can be anticipated in the future if the sulphuric acid cannot be neutralised and the oxidative reactions cannot be quenched.
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| 19. |
- Lindström, Lisa, et al.
(författare)
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Bronchopneumonia in Swedish lambs: a study of pathological changes and bacteriological agents
- 2018
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Ingår i: Acta Veterinaria Scandinavica. - : Springer Science and Business Media LLC. - 0044-605X .- 1751-0147. ; 60
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Tidskriftsartikel (refereegranskat)abstract
- Background: One of the most common post-mortem inspection finding of sheep and lambs in Sweden, following routine slaughter is pneumonia and its prevalence is increasing. To our knowledge, the aetiology of pneumonia in lambs is not well-known for Swedish conditions. Chronic bronchopneumonia, also known as "atypical" or chronic non-progressive pneumonia, is a common disease worldwide, affecting lambs up to 12 months old. It is therefore of interest to elucidate if this disease complex is also a common cause of pneumonia among Swedish lambs. Chronic bronchopneumonia has a characteristic macroscopic and histopathologic appearance, and Mycoplasma ovipneumoniae is the microbial agent most frequently found. Although this bacterium is important for the pathogenesis, multiple agents are presumed to be involved. The aim of this study was to describe the macroscopic and histopathologic lung lesions in routinely slaughtered lambs with pneumonia, and to determine the bacterial agents involved.Results: A total of 41 lungs with gross lesions consistent with pneumonia were examined. Of these, 35 lungs displayed the typical gross appearance of chronic bronchopneumonia, with several or all of the characteristic histological features. M. ovipneumoniae was detected in 83% of the 35 lungs and Mannheimia haemolytica was isolated in 71%. Pneumonia associated with M. ovipneumoniae could be correlated to specific gross lesions consistent with the gross description of chronic bronchopneumonia in lambs.Conclusion: In this study, chronic bronchopneumonia was the most common lung disease in routinely slaughtered Swedish lambs. This diagnosis was based on the characteristic macroscopic and histopathologic pulmonary findings and the frequent presence of the bacterium M. ovipneumoniae. The macroscopic appearance of chronic bronchopneumonia could therefore be used during routine investigation of the lamb carcasses at slaughter, to determine the most likely cause of pneumonia.
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| 20. |
- Lindström, Lisa, et al.
(författare)
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Characterization of gamma-tubulin filaments in mammalian cells
- 2018
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Ingår i: Biochimica et Biophysica Acta - Molecular Cell Research. - : Elsevier BV. - 0167-4889. ; 1865:1, s. 158-171
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Tidskriftsartikel (refereegranskat)abstract
- Overexpression of γ-tubulin leads to the formation of filaments, but nothing is known about such filaments with regard to possible presence in cells, structure and probable dynamics. Here, we used mammalian cell lines to investigate the ability of γ-tubulin to form filaments. We found that γ-tubulin produces fibers called γ-tubules in a GTP-dependent manner and that γ-tubules are made up of pericentrin and the γ-tubulin complex proteins 2, 3, 5 and 6. Furthermore, we noted that the number of cells with cytosolic γ-tubules is increased in non-dividing cells. Our experiments showed that γ-tubules are polar structures that have a low regrowth rate compared to microtubules. Also, we observed that γ-tubules were disassembled by treatment with cold, colcemid, citral dimethyl acetal, dimethyl fumarate or mutation of γ-tubulin GTPase domain, but were increased in number by treatment with taxol or by stable expression of the γ-tubulin1–333 GTPase domain. Our results demonstrate that γ-tubulin forms filaments, and such assembly is facilitated by the GTPase domain of γ-tubulin.
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| 21. |
- Lindström, Lisa
(författare)
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The gamma-tubulin meshwork as a therapeutic target
- 2017
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Cancer is a heterogeneous disease and treatment regime is dependent on type and location of the tumor. Several of the commonly used chemotherapeutics target the functions of the microtubules. One of the major problems with these drugs is the adverse effects associated with their use. Another problem many of the chemotherapeutics today face is resistance. Therefore there is a constant need for development of new drugs in the fight against cancer. Many tumors achieve independent growth by carrying mutations in the retinoblastoma (pRB) signaling pathway. It has been shown that reduced protein levels of nuclear gamma-tubulin in tumor cells lacking pRB expression induce cell death. Consequently inhibiton of gamma-tubulin might be used as a new strategy for therapy of pRB-negative tumors with fewer side-effects.The aim of this thesis was to evaluate gamma-tubulins’ potential as a novel therapeutic target in the treatment of tumors with a deregulated pRB and to characterize the gamma-tubulin meshwork. We searched for compounds that specifically interfere with the nuclear activity of gamma-tubulin and the effect of the substances were studied in silico, in vitro and in vivo. Among the tested substances we found one, citral dimethyl acetal (CDA), that was specific for gamma-tubulin. CDA caused cell death in cell lines with non-functional pRB and reduced tumor growth in a mice xenograft model. We also showed that CDA interact with gamma-tubulin at the amino acid cysteine 13 at the GTPase domain of gamma-tubulin. Our results demonstrate that it is possible to develop new chemotherapeutics that target the nuclear activity of gamma-tubulin and give rise to fewer side-effects.We also observed that gamma-tubulin form a meshwork in cells that connects the nuclear and cytoplasmic compartments. The network is important in mitosis during formation of the nuclear envelope (NE) where it is responsible for recruitment of the lamina to the chromatin. We also observed that gamma-tubulin form cytosolic tubules together with several other proteins, including GCP2, GCP3, GCP6 and pericentrin. The gamma-tubulin meshwork also interacts with the mitochondria. In addition, we provide evidence for that the gamma-tubulin GTPase domain is involved in regulation of mitochondria organization and homeostasis.
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| 22. |
- Lindström, Lisa, et al.
(författare)
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The GTPase domain of gamma-tubulin is required for normal mitochondrial function and spatial organization
- 2018
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Ingår i: Communications Biology. - : Springer Science and Business Media LLC. - 2399-3642. ; 1:https://doi.org/10.1038/s42003-018-0037-3
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Tidskriftsartikel (refereegranskat)abstract
- In the cell, γ-tubulin establishes a cellular network of threads named the γ-string meshwork. However, the functions of this meshwork remain to be determined. We investigated the traits of the meshwork and show that γ-strings have the ability to connect the cytoplasm and the mitochondrial DNA together. We also show that γ-tubulin has a role in the maintenance of the mitochondrial network and functions as reduced levels of γ-tubulin or impairment of its GTPase domain disrupts the mitochondrial network and alters both their respiratory capacity and the expression of mitochondrial-related genes. By contrast, reduced mitochondrial number or increased protein levels of γ-tubulin DNA-binding domain enhanced the association of γ-tubulin with mitochondria. Our results demonstrate that γ-tubulin is an important mitochondrial structural component that maintains the mitochondrial network, providing mitochondria with a cellular infrastructure. We propose that γ-tubulin provides a cytoskeletal element that gives form to the mitochondrial network.
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| 23. |
- Lindström, Lisa, et al.
(författare)
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Therapeutic Targeting of Nuclear Gamma-Tubulin in RB1-negative Tumors.
- 2015
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Ingår i: Molecular Cancer Research. - 1557-3125. ; 13:7, s. 1073-1082
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Tidskriftsartikel (refereegranskat)abstract
- In addition to its cytosolic function, gamma-tubulin is a chromatin-associated protein. Reduced levels of nuclear gamma-tubulin increase the activity of E2 promoter-binding factors (E2F) and raise the levels of retinoblastoma (RB1) tumor suppressor protein. In tumor cells lacking RB1 expression, decreased gamma-tubulin levels induce cell death. Consequently, impairment of the nuclear activity of gamma-tubulin has been suggested as a strategy for targeted chemotherapy of RB1-deficient tumors; thus, tubulin inhibitors were tested to identify compounds that interfere with gamma-tubulin. Interestingly, citral increased E2F activity but impaired microtubule dynamics while citral analogs, like citral dimethyl acetal (CDA), increased E2F activity without affecting microtubules. The cytotoxic effect of CDA on tumor cells was attenuated by increased expression of either RB1 or gamma-tubulin, and increased by reduced levels of either RB1 or gamma-tubulin. Mechanistic study, in silico and in vitro, demonstrated that CDA prevents GTP binding to gamma-tubulin and suggested that the FDA approved drug dimethyl fumarate is also a gamma-tubulin inhibitor. Finally, in vivo growth of xenograft tumors carrying defects in the RB1 signaling pathway were inhibited by CDA treatment. These results demonstrate that inhibition of gamma-tubulin has the potential to specifically target tumor cells and may aid in the design of safer and more efficient chemotherapeutic regimes.
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| 24. |
- Lindström, Michelle, et al.
(författare)
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Lsm7 phase-separated condensates trigger stress granule formation
- 2022
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Ingår i: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 13:1
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Tidskriftsartikel (refereegranskat)abstract
- Stress granules are non-membranous organelles connected to stress responses and age-related disease. Here, the authors identify a conserved yeast protein, Lsm7, that facilitates stress granule formation through dynamic liquid-liquid phase separation condensates upon 2-deoxy-D-glucose-induced stress. Stress granules (SGs) are non-membranous organelles facilitating stress responses and linking the pathology of age-related diseases. In a genome-wide imaging-based phenomic screen, we identify Pab1 co-localizing proteins under 2-deoxy-D-glucose (2-DG) induced stress in Saccharomyces cerevisiae. We find that deletion of one of the Pab1 co-localizing proteins, Lsm7, leads to a significant decrease in SG formation. Under 2-DG stress, Lsm7 rapidly forms foci that assist in SG formation. The Lsm7 foci form via liquid-liquid phase separation, and the intrinsically disordered region and the hydrophobic clusters within the Lsm7 sequence are the internal driving forces in promoting Lsm7 phase separation. The dynamic Lsm7 phase-separated condensates appear to work as seeding scaffolds, promoting Pab1 demixing and subsequent SG initiation, seemingly mediated by RNA interactions. The SG initiation mechanism, via Lsm7 phase separation, identified in this work provides valuable clues for understanding the mechanisms underlying SG formation and SG-associated human diseases.
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| 25. |
- Lindström, V., et al.
(författare)
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Prehospital care in Sweden : From a transport organization to advanced healthcare
- 2015
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Ingår i: Notfall & Rettungsmedizin. - : Springer. - 1434-6222 .- 1436-0578. ; 18:2, s. 107-109
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Tidskriftsartikel (refereegranskat)abstract
- Background: Prehospital care, starting from the patient’s first contact with the emergency medical call centre and including medical care provided in the ambulance, is part of the continuum of care defined as emergency medicine (EM). Sweden has a network of emergency medical call centres that are all reached by one telephone number and staffed by nurses, among other personnel.Objective: This review presents a summary of the prehospital care systems currently in place in Sweden, the role of the physician and the future challenges in this evolving and important field.Results and conclusions: Since 2005, the presence of registered nurses in ambulance teams has become a requirement. This proved to be a turning point in the development of advanced care in the prehospital setting in Sweden. Due to overcrowding in emergency departments, the ambulance services work to steer patients from the ambulance directly to definitive care. Although there are limited numbers of physicians in the prehospital setting today, this should change as the specialty of EM grows stronger.
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| 26. |
- Lundgren, Markus, et al.
(författare)
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Analgesic antipyretic use among young children in the TEDDY study : No association with islet autoimmunity
- 2017
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Ingår i: BMC Pediatrics. - : Springer Science and Business Media LLC. - 1471-2431. ; 17:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: The use of analgesic antipyretics (ANAP) in children have long been a matter of controversy. Data on their practical use on an individual level has, however, been scarce. There are indications of possible effects on glucose homeostasis and immune function related to the use of ANAP. The aim of this study was to analyze patterns of analgesic antipyretic use across the clinical centers of The Environmental Determinants of Diabetes in the Young (TEDDY) prospective cohort study and test if ANAP use was a risk factor for islet autoimmunity. Methods: Data were collected for 8542 children in the first 2.5 years of life. Incidence was analyzed using logistic regression with country and first child status as independent variables. Holm's procedure was used to adjust for multiplicity of intercountry comparisons. Time to autoantibody seroconversion was analyzed using a Cox proportional hazards model with cumulative analgesic use as primary time dependent covariate of interest. For each categorization, a generalized estimating equation (GEE) approach was used. Results: Higher prevalence of ANAP use was found in the U.S. (95.7%) and Sweden (94.8%) compared to Finland (78.1%) and Germany (80.2%). First-born children were more commonly given acetaminophen (OR 1.26; 95% CI 1.07, 1.49; p = 0.007) but less commonly Non-Steroidal Anti-inflammatory Drugs (NSAID) (OR 0.86; 95% CI 0.78, 0.95; p = 0.002). Acetaminophen and NSAID use in the absence of fever and infection was more prevalent in the U.S. (40.4%; 26.3% of doses) compared to Sweden, Finland and Germany (p < 0.001). Acetaminophen or NSAID use before age 2.5 years did not predict development of islet autoimmunity by age 6 years (HR 1.02, 95% CI 0.99-1.09; p = 0.27). In a sub-analysis, acetaminophen use in children with fever weakly predicted development of islet autoimmunity by age 3 years (HR 1.05; 95% CI 1.01-1.09; p = 0.024). Conclusions: ANAP use in young children is not a risk factor for seroconversion by age 6 years. Use of ANAP is widespread in young children, and significantly higher in the U.S. compared to other study sites, where use is common also in absence of fever and infection.
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| 27. |
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| 28. |
- Nielsen, Tove, et al.
(författare)
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High-frequency ultrasound of Peyer's patches in the small intestine of young cats
- 2016
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Ingår i: Journal of Feline Medicine and Surgery. - 1098-612X .- 1532-2750. ; 18, s. 303-309
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Tidskriftsartikel (refereegranskat)abstract
- Objectives A previously unreported, asymmetrically positioned hypoechoic extra layer (APHEL) in the submucosa of the feline distal jejunum and ileum has been recognised using high-frequency ultrasound. The objectives of this study were to characterise the APHEL histologically, and to describe the prevalence and ultrasonographic features of the APHEL in a population of clinically healthy young cats.Methods In an anatomical study, two cats were autopsied and histopathology of the small intestine was performed. An APHEL was detected with ultrasound in the distal jejunum and ileum ante-mortem in the first cat and post mortem in the second cat. Samples for histopathology were obtained from these areas. In the second, prospective part of the study, to document the presence or absence of an APHEL, high-frequency (18 MHz) ultrasound was performed of the intestinal tract in 20 other cats. These cats were client-owned cats aged 6-18 months presented for neutering. The cats were included in the study based on a normal clinical examination, lack of previous or concurrent signs of disease, and having no abnormalities detected at abdominal ultrasound.Results Histopathology from the distal jejunum and ileum in the two cats in the anatomical part of the study showed that the APHEL represented asymmetrically positioned normal lymphatic tissue (Peyer's patches) in the lamina propria and submucosa. In the second part of the study, an APHEL was identified in the submucosa of the distal part of the jejunum and ileum in all 20 cats. Additionally, a similar layer could also be seen further proximally in the jejunum in 10 (50%) of the cats. The thickness of the APHEL was 1.0 mm in both jejunum and ileum.Conclusions and relevance Presumed normal lymphatic tissue in the small intestinal submucosa can be seen with high-frequency ultrasound and is a common finding in young cats.
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| 29. |
- Nyberg, Andre, 1984-, et al.
(författare)
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The accuracy of using elastic resistance bands to evaluate muscular strength
- 2014
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Ingår i: Advances in Physiotherapy. - : Informa Healthcare. - 1403-8196 .- 1651-1948. ; 16:2, s. 104-112
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Tidskriftsartikel (refereegranskat)abstract
- Elastic resistance as a tool for evaluation of muscular strength has rarely been addressed even though it is commonly used in exercise and rehabilitation regimens involving the shoulder muscles. The aim was therefore to investigate the relationship and potential difference between development of force during maximal isokinetic (maximum peak force, maximum mean force and peak mean force) and elastic (one-repetition maximum (1 RM)) concentric shoulder fl exion in healthy older adults. A total of 30 voluntary adults over the age of 50 (15 women, 15 men) were included. Intraclass correlation coefficient absolute agreement was 0.85, 0.43 and 0.48 for the isokinetic values respectively, when all subjects were analysed together. No difference was found between the isokinetic maximum peak force value and the elastic 1 RM for all participants (0.15 kg, p 0.791), for men (0.80 kg, p 0.121) or women ( 0.49 kg, p 0.135). Variations at an individual level, i.e. 95% limits of agreement, were 3.3 kg for all participants, 2.8 kg for women and 3.2 kg for men. These results imply that elastic resistance could be used to evaluate shoulder fl exion strength in both older men and women. However, thevariation on an individual level and the lower agreement among women is important to consider.
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| 30. |
- Nyrén, Rakel, et al.
(författare)
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Localization of lipoprotein lipase and GPIHBP1 in mouse pancreas : effects of diet and leptin deficiency
- 2012
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Ingår i: BMC Physiology. - : BioMed Central (BMC). - 1472-6793. ; 12, s. 14-
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Lipoprotein lipase (LPL) hydrolyzes triglycerides in plasma lipoproteins and enables uptake of lipolysis products for energy production or storage in tissues. Our aim was to study the localization of LPL and its endothelial anchoring protein glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 (GPIHBP1) in mouse pancreas, and effects of diet and leptin deficiency on their expression patterns. For this, immunofluorescence microscopy was used on pancreatic tissue from C57BL/6 mouse embryos (E18), adult mice on normal or high-fat diet, and adult ob/ob-mice treated or not with leptin. The distribution of LPL and GPIHBP1 was compared to insulin, glucagon and CD31. Heparin injections were used to discriminate between intracellular and extracellular LPL.RESULTS: In the exocrine pancreas LPL was found in capillaries, and was mostly co-localized with GPIHBP1. LPL was releasable by heparin, indicating localization on cell surfaces. Within the islets, most of the LPL was associated with beta cells and could not be released by heparin, indicating that the enzyme remained mostly within cells. Staining for LPL was found also in the glucagon-producing alpha cells, both in embryos (E18) and in adult mice. Only small amounts of LPL were found together with GPIHBP1 within the capillaries of islets. Neither a high fat diet nor fasting/re-feeding markedly altered the distribution pattern of LPL or GPIHBP1 in mouse pancreas. Islets from ob/ob mice appeared completely deficient of LPL in the beta cells, while LPL-staining was normal in alpha cells and in the exocrine pancreas. Leptin treatment of ob/ob mice for 12 days reversed this pattern, so that most of the islets expressed LPL in beta cells.CONCLUSIONS: We conclude that both LPL and GPIHBP1 are present in mouse pancreas, and that LPL expression in beta cells is dependent on leptin.
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| 31. |
- Ostrowska, Justyna, et al.
(författare)
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Computed tomography characteristics of equine paranasal sinus cysts
- 2020
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Ingår i: Equine Veterinary Journal. - : Wiley. - 0425-1644 .- 2042-3306. ; 52, s. 538-546
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Tidskriftsartikel (refereegranskat)abstract
- Background Computed tomography (CT) is commonly used to investigate equine paranasal sinus disease, however, only limited information is available in the literature about the detailed CT appearance of equine paranasal sinus cysts.Objectives To investigate if paranasal sinus cysts have specific characteristics in CT images that allow differentiation from other sinus diseases.Study design Retrospective observational study.Methods Evaluation and comparison of CT studies of eight horses with surgically and/or histopathologically confirmed paranasal sinus cysts and 10 horses with other confirmed paranasal sinus diseases.Results A discrete hyperattenuating wall-like structure was detected in the periphery of the sinus lesion in precontrast acquisition in 7/8 horses with paranasal sinus cysts. A similar wall-like structure was detected in 3/10 horses with other sinus diseases, however, in contrast to horses with paranasal sinus cysts, two of these also had hyperattenuating regions within the contents of the sinus lesion. Bone destruction and formation affecting cancellous and cortical bone and dental disease were frequent in horses with paranasal sinus cysts. No significant difference in attenuation values was found when the fluid/soft tissue attenuation contents of lesions in horses with paranasal sinus cysts (mean 28.9 +/- SD 9.2 HU) were compared with other sinus diseases when ethmoid haematomas were excluded (30.4 +/- 12.9 HU, P = .8).Main limitations Low number of cases.Conclusions Detection of a hyperattenuating cystic wall is a helpful feature for identifying paranasal sinus cysts in CT images of horses. In contrast, measurement of attenuation values of the soft tissue/fluid contents of the sinus lesions was not helpful in identifying paranasal sinus cysts.
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| 32. |
- Ostrowska, Justyna, et al.
(författare)
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Computed tomography characteristics of equine paranasal sinus cysts—a case series
- 2016
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Ingår i: Veterinary Radiology and Ultrasound. - 1058-8183 .- 1740-8261. ; 57, s. 654-654
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- COMPUTEDTOMOGRAPHYCHARACTERISTICSOFEQUINEPARANASALSINUSCYSTS-ACASESERIESJ.Ostrowska,T.T´oth,L.Lindstr¨om,K.Hansson,M.Uhlhorn,C.J.Ley.FromtheUniversityAnimalHospital(Ostrowska,T´oth,Uhlhorn),DepartmentofClinicalSciences(Hansson,Ley),andDepartmentofBiomedicalSciencesandVeterinaryPublicHealth,SwedishUni-versityofAgriculturalSciences,UppsalaSE-75007,Sweden(Lindstr¨om).Introduction/Purpose:Differentiatingparanasalsinuscysts(PSC)fromotherparanasalsinusdiseasesinhorsesbasedondiagnosticimagingischallenging.TheaimofthisstudywastoidentifythepatternofCTfeatures,typicalforPSC,byretrospectivecomparisontootherdiseasesoftheequineparanasalsinuses. Methods:NineCTscansofeighthorses(diseasereoccurredafter1yearinonehorse)withtypicalsurgicalappearanceofPSC(sevenconfimedwithhistopathology)wereretrospectivelyre-viewed(group-1).Imagingfndingswerecomparedtoagroupof11horseswithparanasalsinusdiseaseofotherorigin(twoneoplasia,sevenchronicsinusits/granuloma,twopro-gressiveethmoidhematoma),withallhorsesinthisgrouphavingsurgery/necropsyandculture/histopathologyconfimationofthediagnosis(group-2).Thirteenofthehorsesre-ceivedcontrast;IVIohexol300mgI/ml,20ml/s,400ml/horse,scannedapproximately2and7minpostcontrast.MeanHounsfielUnits(HU)valuesofthesofttissue/fluidensitylesionswereobtainedforthreeregionsofinterestinthreedifferentslices.Studentt-testforindependentsamples,P<0.05consideredsignificantwasusedtocomparemeandensityofthecysticcontentwithfreesinusfluiingroup-1andsofttissue/fluidensitylesionsingroup-2.Results:Insixhorsesthepresumedwallofthecystwasatleastpartiallymineralized.Subtlepost-contrastenhancementofthecysticwallwasseenintwohorsesinwhichthemineralizedwallwasabsent.Presenceoffocalorspicule-like,peripheralmineralizationswereseenintwogroup-1horsesandinonegroup-2horsewithaparanasalsinusgranuloma.Allcystswerefillewithsofttissue/fluidensity(mean±SD,25±11HU),exceptonethatcontainedonlyair.Nosignificandifferencewasfoundbetweenthemeandensityofthecysticcontentandthesofttissue/fluidensitylesionsingroup-2(mean±SD,25±11vs.42±23HU,P=0.06),orbetweenthefreesinusfluisurroundingthecysts(mean±SD,25±11HUvs.34±17HU,P=0.2).Corticaldestructionwasdetectedinfourgroup-1andtwogroup-2horses.Sevenhorsesineachgrouphadcancellousbonethinning/destruction,whichalwaysinvolvedatleasttheinfraorbitalcanal.Bonedistortionwasmostfrequent/severeingroup-1horsesandboneproductionwasmostcommoningroup-2horseswithsinusitis.Discussion/Conclusions:ParanasalsinuscystsoftenhavemineralizationinthecystwallandthisfeaturemaybeusefultodifferentiatePSCfromotherparanasalsinusesdiseasesinCTimages.DespitethebenigncharacterofPSCcorticaldestructioniscommoninhorseswithPSC.ThereisconsiderableoverlapbetweenHUvaluesofthecontentsofPSCandthefluid/tissupresentinotherparanasalsinusdiseases.
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| 33. |
- Rosselló, Catalina Ana, et al.
(författare)
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γ-Tubulin⁻γ-Tubulin Interactions as the Basis for the Formation of a Meshwork
- 2018
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Ingår i: International Journal of Molecular Sciences. - : MDPI AG. - 1422-0067. ; 19:10
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Forskningsöversikt (refereegranskat)abstract
- In cytoplasm, protein γ-tubulin joins with various γ-tubulin complex proteins (GCPs) to form a heterotetramer γ-tubulin small complex (γ-TuSC) that can grow into a ring-shaped structure called the γ-tubulin ring complex (γ-TuRC). Both γ-TuSC and γ-TuRC are required for microtubule nucleation. Recent knowledge on γ-tubulin with regard to its cellular functions beyond participation in its creation of microtubules suggests that this protein forms a cellular meshwork. The present review summarizes the recognized functions of γ-tubulin and aims to unite the current views on this protein.
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| 34. |
- Rossello Castillo, Catalina Ana, et al.
(författare)
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Gamma-tubulin coordinates nuclear envelope assembly around chromatin
- 2016
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Ingår i: Heliyon. - : Elsevier BV. - 2405-8440. ; 2:9
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Tidskriftsartikel (refereegranskat)abstract
- The cytosolic role of γ-tubulin as a microtubule organizer has been studied thoroughly, but its nuclear function is poorly understood. Here, we show that γ-tubulin is located throughout the chromatin of demembranated Xenopus laevis sperm and, as the nucleus is formed, γ-tubulin recruits lamin B3 and nuclear membranes. Immunodepletion of γ-tubulin impairs X. laevis assembly of both the lamina and the nuclear membrane. During nuclear formation in mammalian cell lines, γ-tubulin establishes a cellular protein boundary around chromatin that coordinates nuclear assembly of the daughter nuclei. Furthermore, expression of a γ-tubulin mutant that lacks the DNA-binding domain forms chromatin-empty nuclear like structures and demonstrate that a constant interplay between the chromatin-associated and the cytosolic pools of γ-tubulin is required and, when the balance between pools is impaired, aberrant nuclei are formed. We therefore propose that the nuclear protein meshwork formed by γ-tubulin around chromatin coordinates nuclear formation in eukaryotic cells.
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| 35. |
- Salihovic, Samira, et al.
(författare)
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A rapid method for screening of the Stockholm Convention POPs in small amounts of human plasma using SPE and HRGC/HRMS
- 2012
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Ingår i: Chemosphere. - : Elsevier. - 0045-6535 .- 1879-1298. ; 86:7, s. 747-753
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Tidskriftsartikel (refereegranskat)abstract
- A rapid analytical screening method allowing simultaneous analysis of 23 persistent organic pollutants (POPs) in human plasma was developed. Sample preparation based on solid-phase extraction (SPE) with additional clean-up using small multilayer silica gel columns. SPE was performed using a custom made polystyrene-divinylbenzene sorbent for the extraction of chlorinated and brominated POPs. Special efforts to reduce sample volume and improve speed and efficiency of the analytical procedure were made. Determination of 16 polychlorinated biphenyls (PCBs), 5 organochlorine (OC) pesticides, octachlorinated dibenzo-p-dioxin (OCDD) and polybrominated diphenyl ether (BDE #47) in 0.5 mL human plasma was performed by using high resolution gas chromatography coupled to high resolution mass spectrometry (HRGC/HRMS). Recovery of POPs ranged between 46% and 110%, and reproducibility was below 25% relative standard deviation (RSD) for all target compounds, except for trans-nonachlor and OCDD, which were present only at low levels. Limits of detection (LOD) were for the PCBs between 0.8 and 117.7 pg mL(-1) plasma and for the OC pesticides between 5.9 and 89.1 pg mL(-1) plasma. The LOD for OCDD and BDE #47 were 1.4 pg mL(-1) plasma, and 9.2 pg mL(-1) plasma, respectively. The presented method was successfully applied to 1016 human plasma samples from an epidemiological study on cardiovascular disease. (C) 2011 Elsevier Ltd. All rights reserved.
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| 36. |
- Sjölin, Helena, et al.
(författare)
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Common core content in education for nurses in ambulance care in Sweden, Finland and Belgium
- 2019
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Ingår i: Nurse Education in Practice. - : Churchill Livingstone. - 1471-5953 .- 1873-5223. ; 38, s. 34-39
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Tidskriftsartikel (refereegranskat)abstract
- There is no consensus regarding the required education content and competence needed for professionals working in the emergency medical services and only a few countries in Europe staff ambulances with registered nurses. This study aimed to identify common core content in Swedish, Finnish and Belgian university curricula in the education on advanced level for registered nurses in ambulance care and to describe the teachers' perception of the necessary content for the profession as a registered nurse in ambulance care.A deductive research design was used. Three Universities, one from each country; Sweden, Finland and Belgium, participated. Data was generated from curricula and interviews with teachers and analyzed with different approaches of qualitative content analysis.The results showed commonness with respect to core content; the emphasis was mainly on medical knowledge but the content concerning contextual subjects differed between the three universities.The teachers, however, aimed for the students' to acquire a broad competence in clinical reasoning by implementing theory into practice, as well as developing the students' personal aptitude and instilling a scientific awareness. The results suggest that it is possible to create a common curriculum for training of RNs for working in ambulance care.
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| 37. |
- Sjölin, Helena, 1951-, et al.
(författare)
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Prehospital emergency nurses' experiences of care in critical incidents
- 2020
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Ingår i: International Emergency Nursing. - : Elsevier. - 1755-599X .- 1878-013X. ; 51
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Tidskriftsartikel (refereegranskat)abstract
- INTRODUCTION: The ambulance care setting is complex and unpredictable and the personnel must prepare for upcoming assignments. Prehospital emergency care nurses (PENs), are frequently exposed to critical incidents (CIs). There are, to our knowledge, no prior studies describing experiences of requirements for management of caring for a patient during a CI in the ambulance care context. Therefore, the aim of the study was to explore PENs' experiences of care in CIs.METHOD: A qualitative research design with content analysis has been used, based on semi-structured interviews with eleven PENs in Sweden.RESULTS: PENs' experiences can be described as: "In a critical incident, personal ability based on experiential knowledge is central to patient care". Three generic categories underpinned the main category: "Clinical expertise", "Professional approach" and "Broad knowledge base".CONCLUSIONS: The care given during a CI in the ambulance care setting depends on PENs' personal ability based on experiential knowledge. Employers need to build an organization providing prerequisites and support during an CI. Suggested activities are to create forums for PENs to share experiences with each other, possibility to get feedback on completed assignments and continued training to develop new knowledge and be prepared for the unpredictable environment that characterizes CI.
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| 38. |
- Sjölin, Helena, et al.
(författare)
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What an ambulance nurse needs to know : a content analysis of curricula in the specialist nursing programme in prehospital emergency care
- 2015
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Ingår i: International Emergency Nursing. - : Elsevier. - 1755-599X .- 1878-013X. ; 23:2, s. 127-132
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Tidskriftsartikel (refereegranskat)abstract
- In Sweden, ambulances must be staffed by at least one registered nurse. Twelve universities offer education in ambulance nursing. There is no national curriculum for detailed course content and there is a lack of knowledge about the educational content that deals with the ambulance nurse practical professional work. The aim of this study was to describe the content in course curricula for ambulance nurses. A descriptive qualitative research design with summative content analysis was used. Data were generated from 49 courses in nursing and medical science. The result shows that the course content can be described as medical, nursing and contextual knowledge with a certain imbalance with largest focus on medical knowledge. There is least focus on nursing, the registered nurses' main profession. This study clarifies how the content in the education for ambulance nurses in Sweden looks today but there are reasons to discuss the content distribution.
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| 39. |
- Stenberg, Hedvig, et al.
(författare)
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Congenital tremor and splay leg in piglets - insights into the virome, local cytokine response, and histology
- 2022
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Ingår i: BMC Veterinary Research. - : Springer Science and Business Media LLC. - 1746-6148. ; 18
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Tidskriftsartikel (refereegranskat)abstract
- Background: Atypical porcine pestivirus (APPV) is a neurotropic virus associated with congenital tremor type A-II. A few experimental studies also indicate an association between APPV and splay leg. The overarching aim of the present study was to provide insights into the virome, local cytokine response, and histology of the CNS in piglets with signs of congenital tremor or splay leg.Results: Characterization of the cytokine profile and virome of the brain in piglets with signs of congenital tremor revealed an APPV-associated upregulation of Stimulator of interferon genes (STING). The upregulation of STING was associated with an increased expression of the gene encoding IFN-alpha but no differential expression was recorded for the genes encoding CXCL8, IFN-beta, IFN-gamma, IL-1 beta, IL-6, or IL-10. No viral agents or cytokine upregulation could be detected in the spinal cord of piglets with signs of splay leg or in the brain of piglets without an APPV-infection. The histopathological examination showed no lesions in the CNS that could be attributed to the APPV-infection, as no difference between sick and healthy piglets could be seen.Conclusion: The results from this study provide evidence of an APPV-induced antiviral cytokine response but found no lesions related to the infection nor any support for a common causative agent.
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| 40. |
- Stålberg, Gabriella, et al.
(författare)
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Neuropeptide Y, social function and long-term outcome in schizophrenia
- 2014
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Ingår i: Schizophrenia Research. - : Elsevier BV. - 0920-9964 .- 1573-2509. ; 156:2-3, s. 223-227
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Tidskriftsartikel (refereegranskat)abstract
- There is a lack of biomarkers in schizophrenia and the mechanisms underlying the observed deficits in social functioning are poorly understood. This cohort study aimed to explore whether neurotransmitter neuropeptide Y (NPY) in cerebrospinal fluid (CSF) from patients with schizophrenia is correlated to social function and clinical variables. A further aim was to determine whether baseline levels of NPY were associated with subsequent 3-year outcome. Fifty-six consecutively admitted patients with schizophrenia were included and underwent lumbar puncture and symptom ratings before antipsychotic treatment. NPY levels in CSF were determined by radioimmunoassay. Social function (Social Competence and Social Interest) was assessed by Nurses' Observation Scale for Inpatient Evaluation while psychiatric symptoms were rated using the Comprehensive Psychopathological Rating Scale. Three-year outcome was assessed with the Strauss–Carpenter Outcome Scale. Cross-sectional analysis showed a correlation between level of NPY and Social Competence at index admission (rs = 0.37, p < 0.05). The longitudinal analysis (i.e. at the 3-year follow-up) indicated that, for each standard deviation increase in baseline NPY, there was an increased risk of being unemployed (odds ratio [OR] 2.02, 95% confidence interval [CI] 1.07–3.82), having moderate or severe symptoms (OR 3.09, CI 1.30–7.32) or being hospitalized at least 6 months the previous year (OR 3.24, CI 1.09–9.64). However, NPY was not correlated to Social Interest or clinical variables at index admission. In conclusion, NPY levels in CSF are correlated to Social Competence and seem to predict some aspects of longitudinal outcome in schizophrenia.
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| 41. |
- van Leeuwen, F., et al.
(författare)
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Gaia Data Release 1 : Open cluster astrometry: Performance, limitations, and future prospects
- 2017
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 601
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Tidskriftsartikel (refereegranskat)abstract
- Context. The first Gaia Data Release contains the Tycho-Gaia Astrometric Solution (TGAS). This is a subset of about 2 million stars for which, besides the position and photometry, the proper motion and parallax are calculated using Hipparcos and Tycho-2 positions in 1991.25 as prior information. Aims. We investigate the scientific potential and limitations of the TGAS component by means of the astrometric data for open clusters. Methods. Mean cluster parallax and proper motion values are derived taking into account the error correlations within the astrometric solutions for individual stars, an estimate of the internal velocity dispersion in the cluster, and, where relevant, the effects of the depth of the cluster along the line of sight. Internal consistency of the TGAS data is assessed. Results. Values given for standard uncertainties are still inaccurate and may lead to unrealistic unit-weight standard deviations of least squares solutions for cluster parameters. Reconstructed mean cluster parallax and proper motion values are generally in very good agreement with earlier Hipparcos-based determination, although the Gaia mean parallax for the Pleiades is a significant exception. We have no current explanation for that discrepancy. Most clusters are observed to extend to nearly 15 pc from the cluster centre, and it will be up to future Gaia releases to establish whether those potential cluster-member stars are still dynamically bound to the clusters. Conclusions. The Gaia DR1 provides the means to examine open clusters far beyond their more easily visible cores, and can provide membership assessments based on proper motions and parallaxes. A combined HR diagram shows the same features as observed before using the Hipparcos data, with clearly increased luminosities for older A and F dwarfs.
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| 42. |
- Wijk, Helle, 1958, et al.
(författare)
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Verksamhetsförlagd utbildning på avancerad nivå : ny utmaning för specialistutbildningar för sjuksköterskor
- 2009
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Ingår i: Vård i Norden. - København : Sjuksköterskornas samarbete i Norden. - 0107-4083 .- 1890-4238. ; 29:94, s. 41-43
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The aim of this article is to discuss challenges in the development of Specialist Nursing Educations as a result of the 2007 Swedish Higher EducationReform: the implementation of the so-called Bologna process. Certain challenges follow this reform, particularly since the specialist nursingprogrammes will be part of the second cycle of the higher education system, and it will be possible to combine the professional degree witha masters degree (one year). Possible strategies in four areas related to the Specialist Nursing Education are discussed: integration of researchbasedknowledge, experienced-based knowledge, improvement knowledge, and strategies for collaboration between university institutions andclinics. Specific didactical issues are raised.
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