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Sökning: WFRF:(Karlsson Marie)

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1.
  • Engström, Maria, et al. (författare)
  • Clinical fMRI of language function in aphasic patients: Reading paradigm successful, while word generation paradigm fails
  • 2010
  • Ingår i: Acta Radiologica. - : Informa Healthcare. - 0284-1851 .- 1600-0455. ; 51:6, s. 679-686
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: In fMRI examinations, it is very important to select appropriate paradigms assessing the brain function of interest. In addition, the patients ability to perform the required cognitive tasks during fMRI must be taken into account. Purpose: To evaluate two language paradigms, word generation and sentence reading for their usefulness in examinations of aphasic patients and to make suggestions for improvements of clinical fMRI. Material and Methods: Five patients with aphasia after stroke or trauma sequelae were examined by fMRI. The patients language ability was screened by neurolinguistic tests and elementary pre-fMRI language tests. Results: The sentence-reading paradigm succeeded to elicit adequate language-related activation in perilesional areas whereas the word generation paradigm failed. These findings were consistent with results on the behavioral tests in that all patients showed very poor performance in phonemic fluency, but scored well above mean at a reading comprehension task. Conclusion: The sentence-reading paradigm is appropriate to assess language function in this patient group, while the word-generation paradigm seems to be inadequate. In addition, it is crucial to use elementary pre-fMRI language tests to guide the fMRI paradigm decision.
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  • Adman, Per, et al. (författare)
  • 171 forskare: ”Vi vuxna bör också klimatprotestera”
  • 2019
  • Ingår i: Dagens nyheter (DN debatt). - Stockholm. - 1101-2447.
  • Tidskriftsartikel (populärvet., debatt m.m.)abstract
    • DN DEBATT 26/9. Vuxna bör följa uppmaningen från ungdomarna i Fridays for future-rörelsen och protestera eftersom det politiska ledarskapet är otillräckligt. Omfattande och långvariga påtryckningar från hela samhället behövs för att få de politiskt ansvariga att utöva det ledarskap som klimatkrisen kräver, skriver 171 forskare i samhällsvetenskap och humaniora.
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4.
  • Arver, Brita, et al. (författare)
  • Bilateral Prophylactic Mastectomy in Swedish Women at High Risk of Breast Cancer: A National Survey.
  • 2011
  • Ingår i: Annals of surgery. - : Lippincott Williams and Wilkins; 1999. - 1528-1140 .- 0003-4932. ; 253:6, s. 1147-1154
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND/OBJECTIVE:: This study attempted a national inventory of all bilateral prophylactic mastectomies performed in Sweden between 1995 and 2005 in high-risk women without a previous breast malignancy. The primary aim was to investigate the breast cancer incidence after surgery. Secondary aims were to describe the preoperative risk assessment, operation techniques, complications, histopathological findings, and regional differences. METHODS:: Geneticists, oncologists and surgeons performing prophylactic breast surgery were asked to identify all women eligible for inclusion in their region. The medical records were reviewed in each region and the data were analyzed centrally. The BOADICEA risk assessment model was used to calculate the number of expected/prevented breast cancers during the follow-up period. RESULTS:: A total of 223 women operated on in 8 hospitals were identified. During a mean follow-up of 6.6 years, no primary breast cancer was observed compared with 12 expected cases. However, 1 woman succumbed 9 years post mastectomy to widespread adenocarcinoma of uncertain origin. Median age at operation was 40 years. A total of 58% were BRCA1/2 mutation carriers. All but 3 women underwent breast reconstruction, 208 with implants and 12 with autologous tissue. Four small, unifocal, invasive cancers and 4 ductal carcinoma in situ were found in the mastectomy specimens. The incidence of nonbreast related complications was low (3%). Implant loss due to infection/necrosis occurred in 21 women (10%) but a majority received a new implant later. In total, 64% of the women underwent at least 1unanticipated secondary operation. CONCLUSIONS:: Bilateral prophylactic mastectomy is safe and efficacious in reducing future breast cancer in asymptomatic women at high risk. Unanticipated reoperations are common. Given the small number of patients centralization seems justified.
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5.
  • Bendroth Karlsson, Marie, et al. (författare)
  • Bild, konst och medier för yngre barn; kulturella redskap och pedagogiska perspektiv.
  • 2014
  • Bok (övrigt vetenskapligt/konstnärligt)abstract
    • Med texterna Barns visuella lärande och grafiska framställning (kapitel 2) och Bildsamtal och bildtolkning (kapitel 4) i boken Bild, konst och medier för yngre barn; kulturella redskap och pedagogiska perspektiv vill Karlsson Häikiö beskriva vikten av bildarbete i förskolan, lärarens kunskaper kring användandet av kulturella redskap har betydelse för den kvalitet som kan skapas för barnet i mötet med och lärandet genom bild. Med denna antologi vill författarna erbjuda perspektiv på hur man kan tänka om och arbeta med bild och konst i förskolan, men också på fritidshem och i skolans tidiga år. Ett kulturpedagogiskt perspektiv innebär att vi betonar den kulturella och sociala betydelsen för det kommunikativa och konstnärliga arbetet. När det gäller såväl pedagogisk som konstnärlig gestaltning är alltid de grundläggande frågorna vad? hur? varför? vem? intressanta att synliggöra och förstå. Det är en pedagogisk balansakt att ta del av barnens perspektiv och i rätt ögonblick utmana dem så att de utifrån egna intressen och önskemål kan lära sig mer om olika gestaltningsformer och om den visuella kultur de lever i. Att barn idag erövrar en visuell läskunnighet är lika angeläget som att de får en verbal- och skriftspråklig kompetens. Det pedagogiska arbetet med bild, konst och medier har olika aspekter, sociala, kunskapsmässiga, kommunikativa och konstnärliga. Författarna enar att samtliga är betydelsefulla och det är viktigt att ingen av dessa aspekter hamnar i skuggan. De senare årens fokus på visualitet, visuell kultur, estetiska lärprocesser och teorier om lärande om, i, genom och med konst behöver diskuteras ytterligare i relation till yngre barn. Med exempel från olika projekt och aktiviteter diskuterar vi hur arbetet med bild i vid mening kan vara både lekfullt, meningsskapande, lärande och problematiskt.
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6.
  • Bild, konst och medier för yngre barn : kulturella redskap och pedagogiska perspektiv
  • 2014
  • Samlingsverk (redaktörskap) (övrigt vetenskapligt/konstnärligt)abstract
    • Det är en pedagogisk balansakt att ta del av barns perspektiv och i rätt ögonblick utmana dem så att de utifrån egna intressen kan lära sig mer om olika gestaltningsformer och om den visuella kultur de lever i. Att barn idag erövrar en visuell läskunnighet är lika angeläget som att de får en verbal- och skriftspråklig kompetens.Med denna antologi vill vi erbjuda kulturella redskap och pedagogiska perspektiv för att arbeta med bild och konst i förskolan, men också på fritidshem och i skolans tidiga år. Det pedagogiska arbetet med bild, konst och medier har olika aspekter – sociala, kunskapsmässiga, kommu­nikativa och konstnärliga. Vi menar att samtliga är betydelse­fulla och att det är viktigt att ingen av dessa aspekter hamnar i skuggan. De senare årens fokus på visualitet, visuell kultur, estetiska lärprocesser och lärande om, i, genom och med konst behöver diskuteras ytterligare i relation till yngre barn. Med exempel från olika projekt och aktiviteter diskuterar vi hur arbetet med bild i vid mening kan vara både lekfullt, meningsskapande, lärande och problematiskt.
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7.
  • Frazier-Wood, Alexis C., et al. (författare)
  • Genetic variants associated with subjective well-being, depressive symptoms, and neuroticism identified through genome-wide analyses
  • 2016
  • Ingår i: Nature Genetics. - : Nature Research (part of Springer Nature). - 1061-4036 .- 1546-1718. ; 48, s. 624-
  • Tidskriftsartikel (refereegranskat)abstract
    • Very few genetic variants have been associated with depression and neuroticism, likely because of limitations on sample size in previous studies. Subjective well-being, a phenotype that is genetically correlated with both of these traits, has not yet been studied with genome-wide data. We conducted genome-wide association studies of three phenotypes: subjective well-being (n = 298,420), depressive symptoms (n = 161,460), and neuroticism (n = 170,911). We identify 3 variants associated with subjective well-being, 2 variants associated with depressive symptoms, and 11 variants associated with neuroticism, including 2 inversion polymorphisms. The two loci associated with depressive symptoms replicate in an independent depression sample. Joint analyses that exploit the high genetic correlations between the phenotypes (vertical bar(p) over cap vertical bar approximate to 0.8) strengthen the overall credibility of the findings and allow us to identify additional variants. Across our phenotypes, loci regulating expression in central nervous system and adrenal or pancreas tissues are strongly enriched for association.
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10.
  • Johansson, Linda, 1978-, et al. (författare)
  • Erfarenheter och uppfattningar av tvång och begränsningar vid vård och omsorg av personer med kognitiv nedsättning i Jönköpings kommun
  • 2023
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • Tvång och begränsningar i vård och omsorg är inte tillåtet, men används trots detta ändå ibland vid vård av personer med kognitiv nedsättning. I många fall med goda intentioner. I Jönköping kommun har olika utbildningsinsatser gjorts för att arbeta mot den nollvision som finns på nationell nivå. Ett samverkansprojekt mellan Jönköping kommun och Jönköping University startades upp för att få en tydligare bild av fortsatta utbildningsbehov. Syftet med studien var att kartlägga personals erfarenheter och uppfattningar om användandet av tvång och begränsningar inom kommunal vård och omsorg av personer med demenssjukdom. Totalt fjorton fokusgruppsintervjuer med vård- och omsorgspersonal som mötte personer med demenssjukdom inom ordinärt eller särskilt boende genomfördes och ligger till grund för studien. Materialet analyserades med tematisk analys och visa ratt användandet av tvång och begränsningar var relaterat till både relationella aspekter och det direkta mötet såväl som till strukturella och organisatoriska aspekter. Skillnader bland vård- och omsorgspersonalens kunskap och arbete med tvång och begränsningar skilde sig åt beroende på var i organisationen de arbetade. Vård- och omsorgspersonal har ofta förmåga att själva hitta alternativa lösningar och på så vis undvika tvång och begränsningar, men för att öka kunskapen ytterligare behövs ökade möjlighet att reflektera med kollegorna i det dagliga arbetet. 
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11.
  • Kalm, Marie, 1981, et al. (författare)
  • Loss of hippocampal neurogenesis, increased novelty-induced activity, decreased home cage activity, and impaired reversal learning one year after irradiation of the young mouse brain
  • 2013
  • Ingår i: Experimental Neurology. - : Elsevier BV. - 0014-4886 .- 1090-2430. ; 247, s. 402-409
  • Tidskriftsartikel (refereegranskat)abstract
    • Radiotherapy is a major cause of long-term complications in survivors of pediatric brain tumors. These complications include intellectual and memory impairments as well as perturbed growth and puberty. We investigated the long-term effects of a single 8Gy irradiation dose to the brains of 14-day-old mice. Behavior was assessed one year after irradiation using IntelliCage and open field, followed by immunohistochemical investigation of proliferation and neurogenesis in the dentate gyrus of the hippocampus. We found a 61% reduction in proliferation and survival (BrdU incorporation 4weeks prior to sacrifice), 99% decrease in neurogenesis (number of doublecortin-positive cells) and gliosis (12% higher astrocyte density) one year following irradiation. Irradiated animals displayed increased activity in a novel environment but decreased activity in their home cage. Place learning in the IntelliCage was unaffected by irradiation but reversal learning was impaired. Irradiated animals persevered in visiting previously correct corners to a higher extent compared to control animals. Hence, despite the virtual absence of neurogenesis in these old mice, spatial learning could take place. Reversal learning however, where a previous memory was replaced with a new one, was partly impaired. This model is useful to study the so called late effects of radiotherapy to the young brain and to evaluate possible interventions.
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12.
  • Karlsson, Björn-Markus, et al. (författare)
  • Sound and vibration : effects on infants' heart rate and heart rate variability during neonatal transport
  • 2012
  • Ingår i: Acta Paediatrica. - : Wiley-Blackwell. - 0803-5253 .- 1651-2227. ; 101:2, s. 148-154
  • Tidskriftsartikel (refereegranskat)abstract
    • Aim: To measure the effect of sound and whole-body vibration on infants' heart rate and heart rate variability during ground and air ambulance transport.Methods: Sixteen infants were transported by air ambulance with ground ambulance transport to and from the airports. Whole-body vibration and sound levels were recorded and heart parameters were obtained by ECG signal.Results: Sound and whole-body vibration levels exceeded the recommended limits. Mean whole-body vibration and sound levels were 0.19m/s(2) and 73dBA, respectively. Higher whole-body vibration was associated with a lower heart rate (p<0.05), and higher sound level was linked to a higher heart rate (p=0.05). The heart rate variability was significantly higher at the end of the transport than at the beginning (p<0.01). Poorer physiologic status was associated with lower heart rate variability (p<0.001) and a lower heart rate (p<0.01). Infants wearing earmuffs had a lower heart rate (p<0.05).Conclusions: Sound and whole-body vibration during neonatal transport exceed recommended levels for adults and sound seem to have a more stressful effect on the infant than vibrations. Infants should wear earmuffs during neonatal transport because of the stress reducing effect.
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13.
  • Karlsson, Göran, et al. (författare)
  • Gene expression profiling demonstrates that TGF-{beta}1 signals exclusively through receptor complexes involving Alk5 and identifies targets of TGF-{beta} signaling.
  • 2005
  • Ingår i: Physiological Genomics. - : American Physiological Society. - 1094-8341 .- 1531-2267. ; 21:3, s. 396-403
  • Tidskriftsartikel (refereegranskat)abstract
    • Transforming growth factor-β 1 (TGF-β) regulates cellular functions like proliferation, differentiation, and apoptosis. On the cell surface, TGF-β binds to receptor complexes consisting of TGF-β receptor type II (Tβ RII) and activin-like kinase receptor-5 (Alk5), and the downstream signaling is transduced by Smad and MAPK proteins. Recent data have shown that alternative receptor combinations aside from the classical pairing of Tβ RII/Alk5 can be relevant for TGF-β signaling. We have screened for alternative receptors for TGF-β and also for gene targets of TGF-β signaling, by performing functional assays and microarray analysis in murine embryonic fibroblast (MEF) cell lines lacking Alk5. Data from TGF-β-stimulated Alk5(-/-) cells show them to be completely unaffected by TGF-β. Additionally, 465 downstream targets of Alk5 signaling were identified when comparing Alk5(-/-) or TGF-β-stimulated Alk5(+/+) MEFs with unstimulated Alk5(+/+) cells. Our results demonstrate that, in MEFs, TGF-β signals exclusively through complexes involving Alk5, and give insight to its downstream effector genes.
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14.
  • Karlsson, Miriam, et al. (författare)
  • Hepatitis E virus genotype 3 is associated with gallstone-related disease
  • 2019
  • Ingår i: Scandinavian Journal of Gastroenterology. - : Informa UK Limited. - 0036-5521 .- 1502-7708. ; 54:10, s. 1269-1273
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: Hepatitis E virus (HEV) genotype 3 is endemic in Northern Europe and despite a high seroprevalence of anti-HEV IgG antibodies among blood donors (approximate to 17%), few clinical cases are notified in Sweden. Low awareness of hepatitis E and its possible symptoms may contribute to this discrepancy. The aim of this study was to investigate the prevalence of acute HEV infection among hospital admitted patients with abdominal pain and elevated liver enzymes. Materials and methods: During 2016-2017, 148 adult patients with serum alanine aminotransferase (ALT) or aspartate aminotransferase (AST) > twice normal levels were prospectively enrolled at surgical wards at three Swedish hospitals. Serum samples were analyzed for HEV RNA as well as anti-HEV IgM and IgG, and medical records were reviewed. Results: Six (6/148, 4.1%) patients were HEV infected confirmed by detectable HEV RNA, but only one of these patients had detectable anti-HEV antibodies. Four of the HEV infected patients were diagnosed with gallstone-related disease: three with biliary pancreatitis and one with biliary colic. The remaining two were diagnosed with bowel obstruction and pancreatic malignancy. Four HEV strains were typed by sequencing to genotype 3. Conclusions: This study identified acute HEV3 infection in 4% of the patients with elevated liver enzymes admitted to a surgical ward. HEV infection was not the solitary disease leading to hospitalization, instead it was found to be associated with other surgical conditions such as gallstone-related disease including biliary pancreatitis. Additionally, HEV RNA might be the preferential diagnostic tool for detecting ongoing HEV infection.
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15.
  • Karlsson, Niklas, et al. (författare)
  • Learning and activity after irradiation of the young mouse brain analyzed in adulthood using unbiased monitoring in a home cage environment.
  • 2011
  • Ingår i: Radiation research. - 1938-5404. ; 175:3, s. 336-46
  • Tidskriftsartikel (refereegranskat)abstract
    • Cranial radiotherapy during the treatment of pediatric malignancies may cause adverse late effects. It is important to find methods to assess the functional effects of ionizing radiation in animal models and to evaluate the possible ameliorating effects of preventive or reparative treatment strategies. We investigated the long-term effects of a single 8-Gy radiation dose to the brains of 14-day-old mice. Activity and learning were evaluated in adulthood using open field and trace fear conditioning (TFC). These established methods were compared with the novel IntelliCage platform, which enables unbiased analysis of both activity and learning over time in a home cage environment. Neither activity nor learning was changed after irradiation, as judged by the open field and TFC analyses. The IntelliCage, however, revealed both altered activity and learning impairment after irradiation. Place learning and reversal learning were both impaired in the IntelliCage 3 months after irradiation. These results indicate that activity and learning should be assessed using multiple methods and that unbiased analysis over time in a home cage environment may offer advantages in the detection of subtle radiation-induced effects on the young brain.
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17.
  • Lin, Jay, et al. (författare)
  • High prevalence of hepatitis E virus in Swedish moose : A phylogenetic characterization and comparison of the virus from different regions
  • 2015
  • Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 10:4
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Hepatitis E virus (HEV) infects a range of species, including humans, pigs, wild boars and deer. Zoonotic transmission may contribute to the high HEV seroprevalence in the human population of many countries. A novel divergent HEV from moose (Alces alces) in Sweden was recently identified by partial genome sequencing. Since only one strain was found, its classification within the HEV family, prevalence in moose and zoonotic potential was unclear. We therefore investigated samples from 231 moose in seven Swedish counties for HEV, and sequenced a near complete moose HEV genome. Phylogenetic analysis to classify this virus within the family Hepeviridae and to explore potential host specific determinants was performed. Methods and Findings: The HEV prevalence of moose was determined by PCR (marker for active infection) and serological assays (marker of past infection) of sera and 51 fecal samples from 231 Swedish moose. Markers of active and past infection were found in 67 (29%) animals, while 34 (15%) were positive for HEV RNA, 43 (19%) were seropositive for anti-HEV antibodies, and 10 (4%) had both markers. The number of young individuals positive for HEV RNA was larger than for older individuals, and the number of anti-HEV antibody positive individuals increased with age. The high throughput sequenced moose HEV genome was 35-60% identical to existing HEVs. Partial ORF1 sequences from 13 moose strains showed high similarity among them, forming a distinct monophyletic clade with a common ancestor to HEV genotype 1-6 group, which includes members known for zoonotic transmission. Conclusions: This study demonstrates a high frequency of HEV in moose in Sweden, with markers of current and past infection demonstrated in 30% of the animals. Moose is thus an important animal reservoir of HEV. The phylogenetic relationship demonstrated that the moose HEV belonged to the genotype 1-6 group, which includes strains that also infect humans, and therefore may signify a potential for zoonotic transmission of this HEV. © 2015 Lin et al.
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18.
  • Magnusson, Lena O, lektor, 1963-, et al. (författare)
  • Skapande verksamhet i förskolan – kreativt arbete med analoga och digitala redskap
  • 2018. - 1
  • Bok (övrigt vetenskapligt/konstnärligt)abstract
    • Ambitionen med denna bok är att synliggöra och inspirera till estetiskt skapande arbete i förskolepedagogisk verksamhet. Synen på förskolans estetiska verksamhet är i ständig förändring och de senaste decennierna har rumsliga begrepp som snickarrum och målarrum bytts ut mot ateljé, och i stället för temaarbete används nu ofta projekt och processinriktat arbete. Men vad händer i den vardagliga skapande verksamheten, hur möts lärare, barn och material? Hur möts digital och analog teknik, och hur används rummen och omvärlden? Det är några av de frågor som den här boken tar upp.Under arbetet med boken utkristalliserar sig ett antal centrala aspekter som visat sig fruktbara för pedagoger och lärare att reflektera över i relation till skapande verksamhet. Dessa är bland andra pedagogens roll, hur tid och rum organiseras, lekens betydelse liksom förhållandet mellan process och produkt. Bokens tre kapitel berör dessa aspekter på olika sätt, mer eller mindre teorinära, men den praktiska verksamheten i förskolan är central och framlyft i alla kapitel. Boken visar därmed ett stort antal exempel på skapande och estetiskt arbete från olika förskolor.Boken är användbar i lärarutbildningar för yngre barn men också i arbetslag.
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19.
  • Mellgren, A., et al. (författare)
  • High seroprevalence against hepatitis E virus in patients with chronic hepatitis C virus infection
  • 2017
  • Ingår i: Journal of Clinical Virology. - : Elsevier BV. - 1386-6532. ; 88, s. 39-45
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Hepatitis E virus (HEV) genotype 3 is endemic in Europe. Superinfection with HEV in patients with underlying chronic liver disease can cause hepatic decompensation leading to increased morbidity and mortality. Objectives: The prevalence of anti-HEV antibodies was investigated in 204 patients with chronic hepatitis C virus (HCV) infection and different stages of fibrosis. Results: The median age of the patients was 55 years (IQR 40-62 years); 126 (62%) were men. Ninety-eight (48%) patients had a METAVIR fibrosis stage F2 or higher. The prevalence of anti-HEV IgG was 30% (62/204), which was significantly higher than among Swedish blood donors (17%, p < 0.01). The prevalence of anti-HEV antibodies was associated with higher age (OR 1.08 (1.05-1.11); p < 0.01). It was also higher for patients with a prior history of blood transfusion (48%) as compared to intravenous drug use (IDU; 26%) as the risk factor for acquisition of the HCV infection (OR 2.72 (1.2-6.19); p <0.02). The prevalence of anti-HEV IgG was also significantly higher in patients with significant fibrosis, i.e. >= F2 (38%; OR 2.04 (1.11-3.76); p = 0.02) and/or neoplasm (72%; OR 7.27 (2.46-21.44); p < 0.01). Conclusions: When adjusted for age, the prevalence of anti-HEV antibodies was significantly higher in patients with previous or current malignant liver disease compared to blood donors. The lack of significant correlation between HCV and HEV infections indicate low level of transmission of HEV by IDU. HEV infections warrant more attention, especially in patients with preexisting liver disease. (C) 2017 The Author(s). Published by Elsevier B.V.
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20.
  • Moody, Jennifer, et al. (författare)
  • Endoglin is not critical for hematopoietic stem cell engraftment and reconstitution but regulates adult erythroid development
  • 2007
  • Ingår i: Stem Cells. - : Oxford University Press (OUP). - 1549-4918 .- 1066-5099. ; 25:11, s. 2809-2819
  • Tidskriftsartikel (refereegranskat)abstract
    • Endoglin is a transforming growth factor-beta (TGF-beta) accessory receptor recently identified as being highly expressed on long-term repopulating hematopoietic stem cells (HSC) However, little is known regarding its function in these cells. We have used two complementary approaches toward understanding endoglin's role in HSC biology: one that efficiently knocks down expression via lentiviral-driven short hairpin RNA and another that uses retroviral-mediated overexpression. Altering endoglin expression had functional consequences for hematopoietic progenitors in vitro such that endoglin-suppressed myeloid progenitors (colony-forming unit-granulocyte macrophage) displayed a higher degree of sensitivity to TGF-beta-mediated growth inhibition, whereas endoglin-overexpressing cells were partially resistant. However, transplantation of transduced bone marrow enriched in primitive hematopoietic stem and progenitor cells revealed that neither endoglin suppression nor endoglin overexpression affected the ability of stem cells to short-term or long-term repopulate recipient marrow. Furthermore, transplantation of cells altered in endoglin expression yielded normal white blood cell proportions and peripheral blood platelets. Interestingly, decreasing endoglin expression increased the clonogenic capacity of early blast-forming unit-erythroid progenitors, whereas overexpression compromised erythroid differentiation at the basophilic erythroblast phase, suggesting a pivotal role for endoglin at key stages of adult erythropoietic development.
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21.
  • Nordén, J., et al. (författare)
  • Nutrition impact symptoms and body composition in patients with COPD
  • 2015
  • Ingår i: European Journal of Clinical Nutrition. - : Nature Publishing Group. - 0954-3007 .- 1476-5640. ; 69:2, s. 256-261
  • Tidskriftsartikel (refereegranskat)abstract
    • Background/Objectives:Anorexia or lack of appetite is common in chronic obstructive pulmonary disease (COPD) and may be caused or augmented by several symptoms affecting appetite and eating. We aimed to investigate and quantify the extent of nutrition impact symptoms (NIS) in patients with COPD and to explore relationships between NIS and fat-free mass depletion.Subjects/Methods:The results in this cross-sectional study are based on 169 COPD patients (62% female subjects). Body composition was assessed using bioelectrical impedance spectroscopy and the patients reported NIS by two newly developed questionnaires: the Eating Symptoms Questionnaire (ESQ) and the Disease-Related Appetite Questionnaire (DRAQ).Results:Symptoms with the highest prevalence were dry mouth (71%), stomach ache (39%), pain or aches affecting appetite (36%) and constipation (35%). Problems with diarrhoea and feeling affected by smells were more severe among women compared with men (P<0.05). Thirty-six percent of the patients were depleted (fat-free mass index (FFMI) <15 kg/m(2) for women and FFMI<16 kg/m(2) for men). Depleted patients had more NIS (P<0.05) and also rated appetite and taste of food as worse compared with non-depleted patients (P<0.05).Conclusions:NIS are common in patients with COPD, and depleted patients have more severe symptoms. To investigate how these symptoms are best prevented and/or managed and whether NIS prevention/treatment can affect development of malnutrition in patients with COPD is a challenge for the future.
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22.
  • Pradhan, Ajay, 1983-, et al. (författare)
  • Activation of NF-kappa B Protein Prevents the Transition from Juvenile Ovary to Testis and Promotes Ovarian Development in Zebrafish
  • 2012
  • Ingår i: Journal of Biological Chemistry. - : The American Society for Biochemistry and Molecular Biology. - 0021-9258 .- 1083-351X. ; 287:45, s. 37926-37938
  • Tidskriftsartikel (refereegranskat)abstract
    • Testis differentiation in zebrafish involves juvenile ovary to testis transformation initiated by an apoptotic wave. The molecular regulation of this transformation process is not fully understood. NF-kappa B is activated at an early stage of development and has been shown to interact with steroidogenic factor-1 in mammals, leading to the suppression of anti-Mullerian hormone (Amh) gene expression. Because steroidogenic factor-1 and Amh are important for proper testis development, NF-kappa B-mediated induction of anti-apoptotic genes could, therefore, also play a role in zebrafish gonad differentiation. The aim of this study was to examine the potential role of NF-kappa B in zebrafish gonad differentiation. Exposure of juvenile zebrafish to heat-killed Escherichia coli activated the NF-kappa B pathways and resulted in an increased ratio of females from 30 to 85%. Microarray and quantitative real-time-PCR analysis of gonads showed elevated expression of NF-kappa B-regulated genes. To confirm the involvement of NF-kappa B-induced anti-apoptotic effects, zebrafish were treated with sodium deoxycholate, a known inducer of NF-kappa B or NF-kappa B activation inhibitor (NAI). Sodium deoxycholate treatment mimicked the effect of heat-killed bacteria and resulted in an increased proportion of females from 25 to 45%, whereas the inhibition of NF-kappa B using NAI resulted in a decrease in females from 45 to 20%. This study provides proof for an essential role of NF-kappa B in gonadal differentiation of zebrafish and represents an important step toward the complete understanding of the complicated process of sex differentiation in this species and possibly other cyprinid teleosts as well.
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23.
  • Remberger, Mats, et al. (författare)
  • Improved survival after allogeneic hematopoietic stem cell transplantation in recent years : A single-center study
  • 2011
  • Ingår i: Biology of blood and marrow transplantation. - : Elsevier BV. - 1083-8791 .- 1523-6536. ; 17:11, s. 1688-1697
  • Tidskriftsartikel (refereegranskat)abstract
    • We analyzed the outcome of allogeneic hematopoietic stem cell transplantation (HSCT) over the past 2 decades. Between 1992 and 2009, 953 patients were treated with HSCT, mainly for a hematologic malignancy. They were divided according to 4 different time periods of treatment: 1992 to 1995, 1996 to 2000, 2001 to 2005, and 2006 to 2009. Over the years, many factors have changed considerably regarding patient age, diagnosis, disease stage, type of donor, stem cell source, genomic HLA typing, cell dose, type of conditioning, treatment of infections, use of granulocyte-colony stimulating factor (G-CSF), use of mesenchymal stem cells, use of cytotoxic T cells, and home care. When we compared the last period (2006-2009) with earlier periods, we found slower neutrophil engraftment, a higher incidence of acute graft-versus-host disease (aGVHD) of grades II-IV, and less chronic GVHD (cGHVD). The incidence of relapse was unchanged over the 4 periods (22%-25%). Overall survival (OS) and transplant-related mortality (TRM) improved significantly in the more recent periods, with the best results during the last period (2006-2009) and a 100-day TRM of 5.5%. This improvement was also apparent in a multivariate analysis. When correcting for differences between the 4 groups, the hazard ratio for mortality in the last period was 0.59 (95% confidence interval [CI]: 0.44-0.79; P < .001) and for TRM it was 0.63 (CI: 0.43-0.92; P = .02). This study shows that the combined efforts to improve outcome after HSCT have been very effective. Even though we now treat older patients with more advanced disease and use more alternative HLA nonidentical donors, OS and TRM have improved. The problem of relapse still has to be remedied. Thus, several different developments together have resulted in significantly lower TRM and improved survival after HSCT over the last few years.
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24.
  • Smith, Laura B., et al. (författare)
  • Psychological manifestations of celiac disease autoimmunity in young children
  • 2017
  • Ingår i: Pediatrics. - : American Academy of Pediatrics (AAP). - 0031-4005 .- 1098-4275. ; 139:3
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND AND OBJECTIVES: Psychological symptoms can be associated with celiac disease; abstract however, this association has not been studied prospectively in a pediatric cohort. We examined mother report of psychological functioning in children persistently positive for tissue transglutaminase autoantibodies (tTGA), defined as celiac disease autoimmunity (CDA), compared with children without CDA in a screening population of genetically at-risk children. We also investigated differences in psychological symptoms based on mothers' awareness of their child's CDA status. METHODS: The Environmental Determinants of Diabetes in the Young study followed 8676 children to identify triggers of type 1 diabetes and celiac disease. Children were tested for tTGA beginning at 2 years of age. The Achenbach Child Behavior Checklist assessed child psychological functioning at 3.5 and 4.5 years of age. RESULTS: At 3.5 years, 66 mothers unaware their child had CDA reported more child anxiety and depression, aggressive behavior, and sleep problems than 3651 mothers of children without CDA (all Ps ≤ .03). Unaware-CDA mothers also reported more child anxiety and depression, withdrawn behavior, aggressive behavior, and sleep problems than 440 mothers aware of their child's CDA status (all Ps ≤.04). At 4.5 years, there were no differences. CONCLUSIONS: In 3.5-year-old children, CDA is associated with increased reports of child depression and anxiety, aggressive behavior, and sleep problems when mothers are unaware of their child's CDA status. Mothers' knowledge of their child's CDA status is associated with fewer reports of psychological symptoms, suggesting that awareness of the child's tTGA test results affects reporting of symptoms.
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25.
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26.
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27.
  • Törn, Carina, et al. (författare)
  • Complement gene variants in relation to autoantibodies to beta cell specific antigens and type 1 diabetes in the TEDDY Study
  • 2016
  • Ingår i: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 6
  • Tidskriftsartikel (refereegranskat)abstract
    • A total of 15 SNPs within complement genes and present on the ImmunoChip were analyzed in The Environmental Determinants of Diabetes in the Young (TEDDY) study. A total of 5474 subjects were followed from three months of age until islet autoimmunity (IA: n = 413) and the subsequent onset of type 1 diabetes (n = 115) for a median of 73 months (IQR 54-91). Three SNPs within ITGAM were nominally associated (p < 0.05) with IA: rs1143678 [Hazard ratio; HR 0.80; 95% CI 0.66-0.98; p = 0.032], rs1143683 [HR 0.80; 95% CI 0.65-0.98; p = 0.030] and rs4597342 [HR 1.16; 95% CI 1.01-1.32; p = 0.041]. When type 1 diabetes was the outcome, in DR3/4 subjects, there was nominal significance for two SNPs: rs17615 in CD21 [HR 1.52; 95% CI 1.05-2.20; p = 0.025] and rs4844573 in C4BPA [HR 0.63; 95% CI 0.43-0.92; p = 0.017]. Among DR4/4 subjects, rs2230199 in C3 was significantly associated [HR 3.20; 95% CI 1.75-5.85; p = 0.0002, uncorrected] a significance that withstood Bonferroni correction since it was less than 0.000833 (0.05/60) in the HLA-specific analyses. SNPs within the complement genes may contribute to IA, the first step to type 1 diabetes, with at least one SNP in C3 significantly associated with clinically diagnosed type 1 diabetes.
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28.
  • Öfverholm, Anna, et al. (författare)
  • Extended genetic analysis and tumor characteristics in over 4600 women with suspected hereditary breast and ovarian cancer
  • 2023
  • Ingår i: BMC Cancer. - : BioMed Central (BMC). - 1471-2407. ; 23:1
  • Tidskriftsartikel (refereegranskat)abstract
    • BackgroundGenetic screening for pathogenic variants (PVs) in cancer predisposition genes can affect treatment strategies, risk prediction and preventive measures for patients and families. For decades, hereditary breast and ovarian cancer (HBOC) has been attributed to PVs in the genes BRCA1 and BRCA2, and more recently other rare alleles have been firmly established as associated with a high or moderate increased risk of developing breast and/or ovarian cancer. Here, we assess the genetic variation and tumor characteristics in a large cohort of women with suspected HBOC in a clinical oncogenetic setting.MethodsWomen with suspected HBOC referred from all oncogenetic clinics in Sweden over a six-year inclusion period were screened for PVs in 13 clinically relevant genes. The genetic outcome was compared with tumor characteristics and other clinical data collected from national cancer registries and hospital records.ResultsIn 4622 women with breast and/or ovarian cancer the overall diagnostic yield (the proportion of women carrying at least one PV) was 16.6%. BRCA1/2 PVs were found in 8.9% of women (BRCA1 5.95% and BRCA2 2.94%) and PVs in the other breast and ovarian cancer predisposition genes in 8.2%: ATM (1.58%), BARD1 (0.45%), BRIP1 (0.43%), CDH1 (0.11%), CHEK2 (3.46%), PALB2 (0.84%), PTEN (0.02%), RAD51C (0.54%), RAD51D (0.15%), STK11 (0) and TP53 (0.56%). Thus, inclusion of the 11 genes in addition to BRCA1/2 increased diagnostic yield by 7.7%. The yield was, as expected, significantly higher in certain subgroups such as younger patients, medullary breast cancer, higher Nottingham Histologic Grade, ER-negative breast cancer, triple-negative breast cancer and high grade serous ovarian cancer. Age and tumor subtype distributions differed substantially depending on genetic finding.ConclusionsThis study contributes to understanding the clinical and genetic landscape of breast and ovarian cancer susceptibility. Extending clinical genetic screening from BRCA1 and BRCA2 to 13 established cancer predisposition genes almost doubles the diagnostic yield, which has implications for genetic counseling and clinical guidelines. The very low yield in the syndrome genes CDH1, PTEN and STK11 questions the usefulness of including these genes on routine gene panels.
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29.
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30.
  • Abrahamsen Grøndahl, Vigdis, 1964-, et al. (författare)
  • Exploring patient satisfaction predictors in relation to a theoretical model
  • 2013
  • Ingår i: International Journal of Health Care Quality Assurance. - : Emerald Group Publishing Limited. - 0952-6862 .- 1758-6542. ; 26:1, s. 37-54
  • Tidskriftsartikel (refereegranskat)abstract
    • The aim is to describe patients' care quality perceptions and satisfaction and to explore potential patient satisfaction predictors as person‐related conditions, external objective care conditions and patients' perception of actual care received (“PR”) in relation to a theoretical model.Design/methodology/approachA cross‐sectional design was used. Data were collected using one questionnaire combining questions from four instruments: Quality from patients' perspective; Sense of coherence; Big five personality trait; and Emotional stress reaction questionnaire (ESRQ), together with questions from previous research. In total, 528 patients (83.7 per cent response rate) from eight medical, three surgical and one medical/surgical ward in five Norwegian hospitals participated. Answers from 373 respondents with complete ESRQ questionnaires were analysed. Sequential multiple regression analysis with ESRQ as dependent variable was run in three steps: person‐related conditions, external objective care conditions, and PR (p < 0.05).FindingsStep 1 (person‐related conditions) explained 51.7 per cent of the ESRQ variance. Step 2 (external objective care conditions) explained an additional 2.4 per cent. Step 3 (PR) gave no significant additional explanation (0.05 per cent). Steps 1 and 2 contributed statistical significance to the model. Patients rated both quality‐of‐care and satisfaction highly.Originality/valueThe paper shows that the theoretical model using an emotion‐oriented approach to assess patient satisfaction can explain 54 per cent of patient satisfaction in a statistically significant manner.
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31.
  • Abrahamsen Grøndahl, Vigdis, 1964-, et al. (författare)
  • Patients' experiences of care quality and satisfaction satisfaction during hospital stay : a qualitative study
  • 2013
  • Ingår i: European Journal for Person Centered Healthcare. - : University of Buckingham Press. - 2052-5656 .- 2052-5648. ; 1:1, s. 185-192
  • Tidskriftsartikel (refereegranskat)abstract
    • Rationale, aim and objectives: Patients experiencing high care quality and satisfied patients are more likely to follow treatments. Patient satisfaction is an important contributor to physical and mental health-related quality of life. Research emphasises the need to further study satisfaction from the patients’ perspective. The aim was to describe patients’ experiences of care quality and the relation to their satisfaction during hospital stay. Methods: A qualitative descriptive design was used. Interviews were conducted with 22 patients discharged from hospital. Data was analysed by conventional content analysis.Results: Four categories and seven subcategories describing patients’ experiences of care quality and the relation to their satisfaction emerged. Desire to regain health comprised waiting for treatment, being cured, having hopes of being cured and described the treatment and health outcome of hospitalisation. Need to be met in a professional way as a unique person comprised receiving personalized knowledge, receiving healthcare by competent healthcare personnel and described the way patients need to be met by healthcare personnel. Need to be involved comprised taking responsibility for own health, leaving responsibility for own health and concerned the patients’ way of handling hospitalisation. Need to have balance between privacy and companionship concerned the relationship to fellow patients. Conclusions: Health condition is of great importance to patients’ experiences of quality of care and their satisfaction in relation to hospital stay. The healthcare personnel need to be aware that seriously ill patients may never be completely satisfied. Furthermore, healthcare personnel must do their utmost to provide the patients with person-centered care.  Hospital managers must consider the design of wards with respect to such matters as multiple-bed versus single-bed rooms and heads of nursing must carefully plan each patient’s accommodation.
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32.
  • Abrahamsen Grøndahl, Vigdis, 1964- (författare)
  • Patients’ perceptions of actual care conditions and patient satisfaction with care quality in hospital
  • 2012
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • There are theoretical and methodological difficulties in measuring the concepts of quality of care and patient satisfaction, and the conditions associated with these concepts. A theoretical framework of patient satisfaction and a theoretical model of quality of care have been used as the theoretical basis in this thesis. Aim. The overall aim was to describe and explore relationships between person-related conditions, external objective care conditions, patients’ perceptions of quality of care, and patient satisfaction with care in hospital. Methods. Quantitative and qualitative methods were used. In the quantitative study (I-III), 528 patients (83.7%) from eight medical, three surgical and one mixed medical/surgical ward in five hospitals in Norway agreed to participate (10% of total discharges). Data collection was conducted using a questionnaire comprising four instruments: Quality from Patients’ Perspective (QPP); Sense of Coherence scale (SOC); Big Five personality traits – the Single-Item Measures of Personality (SIMP); and Emotional Stress Reaction Questionnaire (ESRQ). In addition, questions regarding socio-demographic data and health conditions were asked, and data from ward statistics were included. Multivariate statistical analysis was carried out (I-III). In the qualitative study 22 informants were interviewed (IV). The interviews were analysed by conventional content analysis. Main findings. Patients’ perceptions of quality of care and patient satisfaction ranged from lower to higher depending on whether all patients or groups of patients were studied. The combination of person-related and external objective care conditions explained 55% of patients’ perceptions of quality of care (I). 54.7% of the variance in patient satisfaction was explained, and the person-related conditions had the strongest impact, explaining 51.7% (II). Three clusters of patients were identified regarding their scores on patient satisfaction and patients’ perceptions of quality of care (III). One group consisted of patients who were most satisfied and had the best perceptions of quality of care, a second group of patients who were less satisfied and had better perceptions, and a third group of patients who were less satisfied and had the worst perceptions. The qualitative study revealed four categories of importance for patients’ satisfaction: desire to regain health, need to be met in a professional way as a unique person, perspective on life, and need to have balance between privacy and companionship (IV). Conclusions. Patients’ perceptions of quality of care and patient satisfaction are two different concepts. The person-related conditions seem to be the strongest predictors of patients’ perceptions of quality of care and patient satisfaction. Registered nurses need to be aware of this when planning and conducting nursing care. There is a need of guidelines for handling over‑occupancy, and of procedures for emergency admissions on the wards. The number of registered nurses on the wards needs to be considered. Healthcare personnel must do their utmost to provide the patients with person‑centred care.
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33.
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34.
  • Abrahamsen Grøndahl, Vigdis, 1964-, et al. (författare)
  • Quality of care from patients' perspective : impact of the combination of person-related and external objective care conditions
  • 2011
  • Ingår i: Journal of Clinical Nursing. - : Wiley. - 0962-1067 .- 1365-2702. ; 20:17/18, s. 2540-2551
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims and objectives. To describe patients' perceptions of quality of care and to explore combinations of person-related and external objective care conditions as potential predictors of these perceptions. Background. Several studies have examined various single factors of person-related and external objective care conditions in relation to quality of care. None of these has included the effect of over-occupancy on patients' perception of quality of care. Furthermore, little is known about how combinations of different factors are related to each other and to the perception of quality of care using multivariate analysis. Design. A cross-sectional design. Method. A total of 528 patients (83·7%) from 12 medical, surgical or medical-surgical wards in five hospitals in Norway participated. Perceptions of quality of care and person-related conditions were measured with the 'Quality from Patient's Perspective' instrument. Data on external objective care conditions was collected from ward statistics provided by head nurses. Multivariate general linear modelling was used ( p < 0·05). Results. The combination of person-related and external objective care conditions revealed five factors that predict patients' perception of quality of care. Three of these are person-related conditions: sex, age and self-reported psychological well-being and two of them are external objective care conditions: RNs (headcount) on the wards and frequency of over-occupancy. These five factors explained 55% of the model. Patients rated the quality of care high. Conclusions. Sex, age, psychological well-being, frequency of over-occupancy and the number of RNs are important factors that must be emphasised if patients are to perceive the quality of care as high. Relevance to clinical practice. Head nurses and healthcare authorities must continually prepare the wards for over-occupancy and they must consider the number of RNs working on the wards.
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35.
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36.
  • Ahlstedt, Jonas, et al. (författare)
  • Non-invasive imaging methodologies for assessment of radiation damage to bone marrow and kidneys from peptide receptor radionuclide therapy. : -
  • 2019
  • Ingår i: Neuroendocrinology. - : S. Karger AG. - 1423-0194 .- 0028-3835. ; 110:1-2, s. 130-138
  • Tidskriftsartikel (refereegranskat)abstract
    • Background/Aims: Peptide receptor radionuclide therapy (PRRT) is becoming clinical routine for management of neuroendocrine tumours. The number of PRRT cycles is correlated with treatment effect but theoretically limited by off-target radiation damage to kidneys and bone marrow. New imaging biomarkers for assessment of PRRT tissue damage would enable evaluation of novel renal and bone marrow protective agents, as well as personalised PRRT treatment regiments. Methods: Mice treated with [177Lu]Lu-DOTA-TATE PRRT or vehicle were examined at baseline and following treatment with [18F]fluorothymidine (FLT) positron emission tomography (PET) and technetium-99m-mercapto-acetyl-tri-glycine ([99mTc]Tc-Mag3) single-photon emission tomography (SPECT) to assess dynamic changes in bone marrow proliferation and renal function, respectively. Results: Bone marrow proliferation as assessed by [18F]FLT was decreased 2 days after PRRT treatment, but not vehicle, compared to baseline (target-to-background ratio [TBRmax] baseline:1.69 ± 0.29 vs. TBRmax PRRT: 0.91 ± 0.02, p < 0.01). Renal function as assessed by [99mTc]Tc-Mag3 SPECT was similarly decreased 2 days following PRRT compared to vehicle (fractional uptake rate [FUR] vehicle: 0.030 ± 0.014 s–1 vs. FUR PRRT: 0.0051 ± 0.0028 s–1, p < 0.01). Conclusion: [18F]FLT PET and [99mTc]Tc-Mag3 SPECT are promising techniques for assessing bone marrow and renal injury from [177Lu]Lu-DOTA-TATE PRRT and may potentially improve patient management by allowing evaluation of protective interventions as well as enabling personalised PRRT treatments.
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37.
  • Ahnström Waltersson, Marie, 1976-, et al. (författare)
  • miR-206 expression is downregulated in cyclin D1 amplified breast tumours
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Amplification in the 11q13 region has been found in around 15% of all breast cancers and is strongly correlated with oestrogen receptor (ER) positive tumours. We have previously found that amplification of at least one of the genes PAK1 or CCND1 is associated with decreased recurrencefree survival among ER+ patients. Other genes in the amplicon might also contribute to this effect and situated close to CCND1 are the FGF-3, -4 and - 19 genes. The FGF-4 protein has been shown to inhibit the expression of the ERα regulator miR-206 in chicken embryo. In this study we analysed 23 tumours with and 27 tumours without previously detected 11q13 amplification to explore if 11q13 amplification is associated with decreased levels of miR-206 and if miR-206 is associated with ER expression. Using real-time PCR, we found that miR-206 expression was inversely correlated to CCND1 and 11q13 amplification (P=0.016 and P=0.022 respectively). Tumours with low miR-206 expression had higher levels of ERα than tumours with intermediate and high expression (P=0.043). We conclude that miR-206 might be an important regulator of the ERα. Our finding that low mir-206 is associated with CCND1 amplification and thereby also FGF-4 amplification points towards the possibility of a miR-206 regulator, FGF-4 or another FGF, present in the amplicon.
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38.
  • Alay, Özgü, et al. (författare)
  • Monitoring and Analytics (Release B)
  • 2021
  • Rapport (refereegranskat)abstract
    • This document describes the design and implementation of the 5GENESIS Monitoring & Analytics (M&A) framework in its Release B, developed within Task T3.3 of the project work plan. M&A Release B leverages and extends M&A Release A, which has been documented in the previous Deliverable D3.5 [1]. In particular, we present new features and enhancements introduced in this new Release compared to the Release A. We also report some examples of usage of the M&A framework, in order to showcase its integrated in the 5GENESIS Reference Architecture. 
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39.
  • Alexanderson, Karin, 1952-, et al. (författare)
  • Supporting user involvement in child welfare work : a way of implementing evidence-based practice
  • 2014
  • Ingår i: Evidence & Policy. - Policy Press : Policy Press. - 1744-2648 .- 1744-2656. ; 10:4, s. 541-554
  • Tidskriftsartikel (refereegranskat)abstract
    • The articel describes and analyses some preliminary working methods for user involvement in child welfare. The models are based on the results of a national project in Sweden where children and young peple have been involved as informants. How experiences and viewpoints from children and young people can be a source of knowledge in child welfare organisatiions is one of the main questions. The performance and the results of the project are analysed in relaton to a theoretical macro-oriented model created to illustrate the need for different kinds of knowledge in supporting the implementation of an evidence-based practice.
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40.
  • Alexandersson, Karin, et al. (författare)
  • Producing and consuming knowledge in social work practice: research and development activities in a Swedish context
  • 2009
  • Ingår i: Evidence & Policy. - : Bristol University Press. - 1744-2648 .- 1744-2656. ; 5:2, s. 127-139
  • Tidskriftsartikel (refereegranskat)abstract
    • This article presents various forms of activities performed by locally based social welfare research and development (R&D) units in Sweden. The authors argue that these units are vital actors in the field of encouraging and strengthening evidence-based social work practice. They are close to social services organisations and have the ability to use flexible methods in order to bridge the gap between research and practice in a local context. The theoretical framework for the article is the organisational excellence model – an archetype for how research can be used in practice.
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41.
  • Ali, Nicole, et al. (författare)
  • Forward RNAi screens in primary human hematopoietic stem/progenitor cells
  • 2009
  • Ingår i: Blood. - : American Society of Hematology. - 1528-0020 .- 0006-4971. ; 113:16, s. 3690-3695
  • Tidskriftsartikel (refereegranskat)abstract
    • The mechanisms regulating key fate decisions such as self-renewal and differentiation in hematopoietic stem and progenitor cells (HSPC) remain poorly understood. We report here a screening strategy developed to assess modulators of human hematopoiesis using a lentiviral short hairpin RNA (shRNA) library transduced into cord blood-derived stem/progenitor cells. To screen for modifiers of self-renewal/differentiation, we used the limited persistence of HSPCs under ex vivo culture conditions as a baseline for functional selection of shRNAs conferring enhanced maintenance or expansion of the stem/progenitor potential. This approach enables complex, pooled screens in large numbers of cells. Functional selection identified novel specific gene targets (exostoses 1) or shRNA constructs capable of altering human hematopoietic progenitor differentiation or stem cell expansion, respectively, thereby demonstrating the potential of this forward screening approach in primary human stem cell populations. (Blood. 2009; 113: 3690-3695)
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42.
  • Allahgholi, Leila, et al. (författare)
  • Composition analysis and minimal treatments to solubilize polysaccharides from the brown seaweed Laminaria digitata for microbial growth of thermophiles
  • 2020
  • Ingår i: Journal of Applied Phycology. - : Springer Science and Business Media LLC. - 0921-8971 .- 1573-5176. ; 32:3, s. 1933-1947
  • Tidskriftsartikel (refereegranskat)abstract
    • Brown macroalgae (Phaeophyta) hold high potential as feedstock for biorefineries due to high biomass productivity and carbohydrate content. They are, however, a challenging, unconventional feedstock for microbial refining and several processing problems need to be solved to make them a viable option. Pre-treatment is necessary to enhance accessibility and solubility of the biomass components but should be minimal and mild to assure sustainable and cost-effective processing. Here, two routes to pre-treatLaminaria digitata to release polysaccharides were investigated: hot water pre-treatment by autoclaving (121 °C, 20 min or 60 min) and a two-step extraction with mild acid (0.1 M HCl) followed by alkaline treatment. Hot water pre-treatment resulted in partial extraction of a mixture of polysaccharides consisting of alginate, fucoidan and laminarin. After mild acid pre-treatment, alginate was found in the remaining insoluble residues and was extracted in a second step via alkaline treatment using Na2CO3 (0.15 M) at 80 °C and CaCl2 (10%) for the precipitation. In addition to carbohydrates, a fraction of other components such as proteins, phenolic compounds, minerals and trace elements was detected in the extracts. Cultivation of the thermophilic bacterial strains Rhodothermus marinus DSM 16675 and Bacillus methanolicus MGA3 (ATCC 53907) in media supplemented with the respective extracts resulted in growth of both strains, indicating that they were able to utilize the available carbon source for growth. R. marinus displayed the highest cell density in the medium containing the extract from acid pre-treatment, whereas B. methanolicus growth was highest with the extract from hot water pre-treatment.
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43.
  • Altincekic, Nadide, et al. (författare)
  • Targeting the Main Protease (Mpro, nsp5) by Growth of Fragment Scaffolds Exploiting Structure-Based Methodologies
  • 2024
  • Ingår i: ACS Chemical Biology. - : American Chemical Society (ACS). - 1554-8929 .- 1554-8937. ; 19:2, s. 563-574
  • Tidskriftsartikel (refereegranskat)abstract
    • The main protease Mpro, nsp5, of SARS-CoV-2 (SCoV2) is one of its most attractive drug targets. Here, we report primary screening data using nuclear magnetic resonance spectroscopy (NMR) of four different libraries and detailed follow-up synthesis on the promising uracil-containing fragment Z604 derived from these libraries. Z604 shows time-dependent binding. Its inhibitory effect is sensitive to reducing conditions. Starting with Z604, we synthesized and characterized 13 compounds designed by fragment growth strategies. Each compound was characterized by NMR and/or activity assays to investigate their interaction with Mpro. These investigations resulted in the four-armed compound 35b that binds directly to Mpro. 35b could be cocrystallized with Mpro revealing its noncovalent binding mode, which fills all four active site subpockets. Herein, we describe the NMR-derived fragment-to-hit pipeline and its application for the development of promising starting points for inhibitors of the main protease of SCoV2.
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44.
  • Andersson, Annica, 1983, et al. (författare)
  • Estrogen regulates T helper 17 phenotype and localization in experimental autoimmune arthritis
  • 2015
  • Ingår i: Arthritis Research & Therapy. - : Springer Science and Business Media LLC. - 1478-6354. ; 17:32
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: The incidence and progression of many autoimmune diseases are sex-biased, which might be explained by the immunomodulating properties of endocrine hormones. Treatment with estradiol potently inhibits experimental autoimmune arthritis. Interleukin-17-producing T helper cells (Th17) are key players in several autoimmune diseases, particularly in rheumatoid arthritis. The aim of this study was to investigate the effects of estrogen on Th17 cells in experimental arthritis. Methods: Ovariectomized DBA/1 mice treated with 17 beta-estradiol (E2) or placebo were subjected to collagen-induced arthritis (CIA), and arthritis development was assessed. Th17 cells in joints and lymph nodes were studied by flow cytometry. Lymph node Th17 cells were also examined in ovariectomized estrogen receptor a-knockout mice (ERa-/-) and wild-type littermates, treated with E2 or placebo and subjected to antigen-induced arthritis. Results: E2-treated mice with established CIA showed reduced severity of arthritis and fewer Th17 cells in joints compared with controls. Interestingly, E2-treated mice displayed increased Th17 cells in lymph nodes during the early phase of the disease, dependent on ER alpha. E2 increased the expression of C-C chemokine receptor 6 (CCR6) on lymph node Th17 cells as well as the expression of the corresponding C-C chemokine ligand 20 (CCL20) within lymph nodes. Conclusions: This is the first study in which the effects of E2 on Th17 cells have been characterized in experimental autoimmune arthritis. We report that E2 treatment results in an increase of Th17 cells in lymph nodes during the early phase of arthritis development, but leads to a decrease of Th17 in joints during established arthritis. Our data suggest that this may be caused by interference with the CCR6-CCL20 pathway, which is important for Th17 cell migration. This study contributes to the understanding of the role of estrogen in the development of autoimmune arthritis and opens up new fields for research concerning the sex bias in autoimmune disease.
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45.
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46.
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47.
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48.
  • Andersson, Marie, et al. (författare)
  • Maternal Transfer of the Cyanobacterial Neurotoxin beta-N-Methylamino-L-Alanine (BMAA) via Milk to Suckling Offspring
  • 2013
  • Ingår i: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 8:10, s. e78133-
  • Tidskriftsartikel (refereegranskat)abstract
    • The cyanobacterial neurotoxin beta-N-methylamino-L-alanine (BMAA) has been implicated in the etiology of neurodegenerative disease and proposed to be biomagnified in terrestrial and aquatic food chains. We have previously shown that the neonatal period in rats, which in humans corresponds to the last trimester of pregnancy and the first few years of age, is a particularly sensitive period for exposure to BMAA. The present study aimed to examine the secretion of C-14-labeled L-and D-BMAA into milk in lactating mice and the subsequent transfer of BMAA into the developing brain. The results suggest that secretion into milk is an important elimination pathway of BMAA in lactating mothers and an efficient exposure route predominantly for L-BMAA but also for D-BMAA in suckling mice. Following secretion of [C-14] L-BMAA into milk, the levels of [C-14] L-BMAA in the brains of the suckling neonatal mice significantly exceeded the levels in the maternal brains. In vitro studies using the mouse mammary epithelial HC11 cell line confirmed a more efficient influx and efflux of L-BMAA than of D-BMAA in cells, suggesting enantiomer-selective transport. Competition experiments with other amino acids and a low sodium dependency of the influx suggests that the amino acid transporters LAT1 and LAT2 are involved in the transport of L-BMAA into milk. Given the persistent neurodevelopmental toxicity following injection of L-BMAA to neonatal rodent pups, the current results highlight the need to determine whether BMAA is enriched mother's and cow's milk.
  •  
49.
  • Andersson, Marie, 1974-, et al. (författare)
  • The environmental neurotoxin β-N-methylamino-l-alanine (l-BMAA) is deposited into birds' eggs
  • 2018
  • Ingår i: Ecotoxicology and Environmental Safety. - : Elsevier BV. - 0147-6513 .- 1090-2414. ; 147, s. 720-724
  • Tidskriftsartikel (refereegranskat)abstract
    • C-carboxyl-labeled BMAA were compared. The results revealed a pronounced incorporation of radioactivity in the eggs, predominantly in the yolk but also in the albumen. Imaging analysis showed that the concentrations of radioactivity in the liver decreased about seven times between the 24h and the 72h time points, while the concentrations in egg yolk remained largely unchanged. At 72h the egg yolk contained about five times the concentration of radioactivity in the liver. Both BMAA preparations gave rise to similar distribution pattern in the bird tissues and in the eggs, indicating metabolic stability of the labeled groups. The demonstrated deposition into eggs warrants studies of BMAAs effects on bird development. Moreover, birds' eggs may be a source of human BMAA exposure, provided that the laying birds are exposed to BMAA via their diet.
  •  
50.
  • Andersson, Marie, 1974-, et al. (författare)
  • Transfer of developmental neurotoxin beta-N-methylamino-L-alanine (BMAA) via milk to nursed offspring : Studies by mass spectrometry and image analysis
  • 2016
  • Ingår i: Toxicology Letters. - : Elsevier BV. - 0378-4274 .- 1879-3169. ; 258, s. 108-114
  • Tidskriftsartikel (refereegranskat)abstract
    • The cyanobacterial non-proteinogenic amino acid beta-N-methylamino-L-alanine (BMAA) is proposed to be involved in the etiology of amyotrophic lateral sclerosis/parkinsonism dementia complex. When administered as single doses to neonatal rats, BMAA gives rise to cognitive and neurodegenerative impairments in the adult animal. Here, we employed mass spectrometry (LC-MS/MS) and autoradiographic imaging to examine the mother-to-pup transfer of BMAA in rats. The results show that unchanged BMAA was secreted into the milk and distributed to the suckling pups. The concentration of BMAA in pup stomach milk and the neonatal liver peaked after 8 h, while the concentration in the pup brain increased throughout the study period. About 1 and 6% of the BMAA recovered from adult liver and brain were released following hydrolysis, suggesting that this fraction was associated with protein. No association to milk protein was observed. Injection of rat pups with [methyl-C-14]-L-BMAA or [carboxyl-C-14]-L-BMAA resulted in highly similar distribution patterns, indicating no or low metabolic elimination of the methylamino- or carboxyl groups. In conclusion, BMAA is transported as a free amino acid to rat milk and suckling pups. The results strengthen the proposal that mothers' milk could be a source of exposure for BMAA in human infants. (C) 2016 Elsevier Ireland Ltd. All rights reserved.
  •  
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