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Search: WFRF:(Chapman Roger)

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1.
  • Ademuyiwa, Adesoji O., et al. (author)
  • Determinants of morbidity and mortality following emergency abdominal surgery in children in low-income and middle-income countries
  • 2016
  • In: BMJ Global Health. - : BMJ Publishing Group Ltd. - 2059-7908. ; 1:4
  • Journal article (peer-reviewed)abstract
    • Background: Child health is a key priority on the global health agenda, yet the provision of essential and emergency surgery in children is patchy in resource-poor regions. This study was aimed to determine the mortality risk for emergency abdominal paediatric surgery in low-income countries globally.Methods: Multicentre, international, prospective, cohort study. Self-selected surgical units performing emergency abdominal surgery submitted prespecified data for consecutive children aged <16 years during a 2-week period between July and December 2014. The United Nation's Human Development Index (HDI) was used to stratify countries. The main outcome measure was 30-day postoperative mortality, analysed by multilevel logistic regression.Results: This study included 1409 patients from 253 centres in 43 countries; 282 children were under 2 years of age. Among them, 265 (18.8%) were from low-HDI, 450 (31.9%) from middle-HDI and 694 (49.3%) from high-HDI countries. The most common operations performed were appendectomy, small bowel resection, pyloromyotomy and correction of intussusception. After adjustment for patient and hospital risk factors, child mortality at 30 days was significantly higher in low-HDI (adjusted OR 7.14 (95% CI 2.52 to 20.23), p<0.001) and middle-HDI (4.42 (1.44 to 13.56), p=0.009) countries compared with high-HDI countries, translating to 40 excess deaths per 1000 procedures performed.Conclusions: Adjusted mortality in children following emergency abdominal surgery may be as high as 7 times greater in low-HDI and middle-HDI countries compared with high-HDI countries. Effective provision of emergency essential surgery should be a key priority for global child health agendas.
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2.
  • Benito de Valle, Maria, et al. (author)
  • Factors That Reduce Health-Related Quality of Life in Patients With Primary Sclerosing Cholangitis.
  • 2012
  • In: Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association. - : Elsevier BV. - 1542-7714. ; 10:7, s. 769-775
  • Journal article (peer-reviewed)abstract
    • BACKGROUND & AIMS: Health-related quality of life (HRQL) is frequently reduced in patients with chronic liver disease, but there are limited data from patients with primary sclerosing cholangitis (PSC). We aimed to evaluate HRQL and its potential determinants in 2 population-based cohorts of patients with PSC and to study the prevalence of fatigue among these patients. METHODS: Validated questionnaires were used to measure quality of life (the Short-Form 36 [SF-36] and the chronic liver disease questionnaire), fatigue (the fatigue impact scale), and psychological distress (the hospital anxiety and depression scale) in 182 PSC patients residing in Sweden or England. Results were compared with those from the general population (controls). Regression analysis was performed to identify factors independently associated with HRQL. RESULTS: Patients with PSC had significantly lower scores from several areas of the SF-36, compared with controls (P < .05). Age (β = -0.62 to -0.21, P < .05) and systemic symptoms (β = 3.84-15.94, P < .05) such as pruritus were associated with lower scores from specific areas of the SF-36; serum level of alkaline phosphatase (β =-1.12 to -0.75, P < .05), and large-duct PSC (β = -15.35 to -10.05, P < .05) were associated with lower scores on mental health questionnaires. The proportion of patients with significant fatigue, depression, or anxiety did not differ between patients and controls (P > .05). CONCLUSIONS: Quality of life is impaired in unselected patients with PSC. Fatigue does not seem to be a specific symptom of PSC. Older age, large-duct disease, and systemic symptoms seem to reduce HRQL in patients with PSC.
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3.
  • Björnsson, Einar, 1958, et al. (author)
  • Fatigue in patients with primary sclerosing cholangitis.
  • 2004
  • In: Scandinavian journal of gastroenterology. - : Informa UK Limited. - 0036-5521 .- 1502-7708. ; 39:10, s. 961-8
  • Journal article (peer-reviewed)abstract
    • BACKGROUND: The occurrence of fatigue in primary sclerosing cholangitis (PSC), its impact on quality of life and the role of concomitant inflammatory bowel disease (IBD) and coexisting irritable bowel syndrome (IBS) is unexplored. METHODS: Ninety-three patients with PSC, associated with IBD in 80% of cases and 77 patients with IBD alone, were enrolled in the study. The patients completed the following questionnaires: the Fatigue Impact Scale (FIS), the Psychological General Well-Being Index (PGWB), the Gastrointestinal Symptom Rating Scale (GSRS), the Beck Depression Inventory (BDI) and diagnostic criteria for IBS. Questionnaire data were related to liver tests and the latest liver biopsy in the PSC patients. Two sex- and age matched controls from the general population (GP) were assigned to each PSC patient and these controls completed the FIS and the BDI. RESULTS: Total fatigue score did not differ significantly between patients with PSC and IBD alone. Median total fatigue score among GP subjects was 39 (13-72), which was higher than in PSC (19 (6-52) (P = 0.02)) and in IBD patients (19 (5-35) (P < 0.0001)). PGWB and GSRS scores did not differ between patients with PSC and IBD alone. Depression and general health (PGWB) were independent predictors for total fatigue score in PSC. No correlation was observed between fatigue in PSC and the severity of the liver disease. CONCLUSIONS: Fatigue in patients with PSC is related to depression but not to the severity of the liver disease. Both the PSC and IBD patients had lower total fatigue scores than subjects from the general population. This argues against fatigue as a specific symptom of PSC and IBD patients.
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4.
  • Björnsson, Einar, 1958, et al. (author)
  • Fatigue is not a specific symptom in patients with primary biliary cirrhosis.
  • 2005
  • In: European journal of gastroenterology & hepatology. - 0954-691X. ; 17:3, s. 351-7
  • Journal article (peer-reviewed)abstract
    • BACKGROUND: Fatigue has been reported to be common in patients with primary biliary cirrhosis (PBC). Limited data exist on comparison with fatigue in the general population and comparison with patients with other chronic gastrointestinal disorders are lacking. METHOD: We enrolled 96 patients with PBC (87 females); mean age 63 (range 34-65) who completed the Fatigue Impact Scale (FIS). In comparison we included matched controls from the general population, patients with organic (OGD) and functional GI disorders (FGD). Liver function test and the latest liver biopsy were analysed and correlated with fatigue scores. RESULTS: The mean duration of PBC was 7.4 years, the mean bilirubin 13 micromol/l. Twelve per cent of patients had cirrhosis, 29% were in stage I on Ludwig's histology score and 30% and 29% were in stages II and III, respectively. The PBC patients had a median FIS total score of 29 in comparison with 38 in GP controls (P<0.05). Patients with OGD and FGD had more severe fatigue (FIS total score 67 and 59 (P<0.01 compared with PBC)). Fatigue in the PBC patients did not correlate with liver tests and histology stage. CONCLUSION: PBC patients had less severe fatigue measured with the FIS than controls from the GP and patients with OGD and FGD. This study also confirms results of other studies showing no correlation with fatigue in PBC and liver disease parameters. These results argues strongly against fatigue as a specific symptom in PBC.
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5.
  • Björnsson, Einar, et al. (author)
  • The natural history of small duct primary sclerosing cholangitis
  • 2008
  • In: Gastroenterology. - : Elsevier BV. - 1528-0012 .- 0016-5085. ; 134:4, s. 975-980
  • Journal article (peer-reviewed)abstract
    • Background & Aims: The long-term prognosis of patients with small-duct primary sclerosing cholangitis (PSC) remains incompletely characterized. We aimed at determining the natural history and long-term outcomes of a large number of patients with small-duct PSC. Methods: Data from 83 patients with well-characterized small-duct PSC from several medical institutions in Europe and the United States were combined. Each patient with small-duct PSC was randomly matched to 2 patients with large-duct PSC by age, gender, calendar year of diagnosis, and institution. Results: The median age at diagnosis in both groups was 38 years (61% males). Nineteen (22.9%) of the 83 patients with small-duct PSC progressed to large-duct PSC in a median of 7.4 (interquartile range [IQR], 5.1–14) years. One patient with small-duct PSC who progressed to large-duct PSC was diagnosed with cholangiocarcinoma but after progression to large-duct PSC; 20 patients with large-duct PSC developed cholangiocarcinoma. Patients with small-duct PSC had a significantly longer transplantation-free survival compared with large-duct PSC patients (13 years [IQR, 10–17] vs 10 years [IQR, 6–14], respectively; hazard ratio, 3.04; 95% confidence interval: 1.82–5.06; P < .0001). Two patients with small-duct PSC who underwent liver transplantation had recurrence of small-duct PSC in the graft 9 and 13 years, respectively, after transplantation. Conclusions: Small-duct PSC is a disease of progressive potential but associated with a better long-term prognosis as compared with large-duct PSC. Small-duct PSC may recur after liver transplantation. Cholangiocarcinoma does not seem to occur in patients with small-duct PSC, unless the disease has progressed to large-duct PSC.
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6.
  • Elhai, M, et al. (author)
  • Outcomes of patients with systemic sclerosis treated with rituximab in contemporary practice: a prospective cohort study
  • 2019
  • In: Annals of the rheumatic diseases. - : BMJ. - 1468-2060 .- 0003-4967. ; 78:7, s. 979-987
  • Journal article (peer-reviewed)abstract
    • To assess the safety and efficacy of rituximab in systemic sclerosis (SSc) in clinical practice.MethodsWe performed a prospective study including patients with SSc from the European Scleroderma Trials and Research (EUSTAR) network treated with rituximab and matched with untreated patients with SSc. The main outcomes measures were adverse events, skin fibrosis improvement, lung fibrosis worsening and steroids use among propensity score-matched patients treated or not with rituximab.Results254 patients were treated with rituximab, in 58% for lung and in 32% for skin involvement. After a median follow-up of 2 years, about 70% of the patients had no side effect. Comparison of treated patients with 9575 propensity-score matched patients showed that patients treated with rituximab were more likely to have skin fibrosis improvement (22.7 vs 14.03 events per 100 person-years; OR: 2.79 [1.47–5.32]; p=0.002). Treated patients did not have significantly different rates of decrease in forced vital capacity (FVC)>10% (OR: 1.03 [0.55–1.94]; p=0.93) nor in carbon monoxide diffusing capacity (DLCO) decrease. Patients having received rituximab were more prone to stop or decrease steroids (OR: 2.34 [1.56–3.53], p<0.0001). Patients treated concomitantly with mycophenolate mofetil had a trend for better outcomes as compared with patients receiving rituximab alone (delta FVC: 5.22 [0.83–9.62]; p=0.019 as compared with controls vs 3 [0.66–5.35]; p=0.012).ConclusionRituximab use was associated with a good safety profile in this large SSc-cohort. Significant change was observed on skin fibrosis, but not on lung. However, the limitation is the observational design. The potential stabilisation of lung fibrosis by rituximab has to be addressed by a randomised trial.
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7.
  • Frantz, Laurent A. F., et al. (author)
  • Ancient pigs reveal a near-complete genomic turnover following their introduction to Europe
  • 2019
  • In: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 116:35, s. 17231-17238
  • Journal article (peer-reviewed)abstract
    • Archaeological evidence indicates that pig domestication had begun by similar to 10,500 y before the present ( BP) in the Near East, and mitochondrial DNA ( mtDNA) suggests that pigs arrived in Europe alongside farmers similar to 8,500 y BP. A few thousand years after the introduction of Near Eastern pigs into Europe, however, their characteristic mtDNA signature disappeared and was replaced by haplotypes associated with European wild boars. This turnover could be accounted for by substantial gene flow from local European wild boars, although it is also possible that European wild boars were domesticated independently without any genetic contribution from the Near East. To test these hypotheses, we obtained mtDNA sequences from 2,099 modern and ancient pig samples and 63 nuclear ancient genomes from Near Eastern and European pigs. Our analyses revealed that European domestic pigs dating from 7,100 to 6,000 y BP possessed both Near Eastern and European nuclear ancestry, while later pigs possessed no more than 4% Near Eastern ancestry, indicating that gene flow from European wild boars resulted in a near-complete disappearance of Near East ancestry. In addition, we demonstrate that a variant at a locus encoding black coat color likely originated in the Near East and persisted in European pigs. Altogether, our results indicate that while pigs were not independently domesticated in Europe, the vast majority of human-mediated selection over the past 5,000 y focused on the genomic fraction derived from the European wild boars, and not on the fraction that was selected by early Neolithic farmers over the first 2,500 y of the domestication process.
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8.
  • Grüning, Björn, et al. (author)
  • Bioconda: A sustainable and comprehensive software distribution for the life sciences
  • 2017
  • Other publication (other academic/artistic)abstract
    • We present Bioconda (https://bioconda.github.io), a distribution of bioinformatics software for the lightweight, multi-platform and language-agnostic package manager Conda. Currently, Bioconda offers a collection of over 3000 software packages, which is continuously maintained, updated, and extended by a growing global community of more than 200 contributors. Bioconda improves analysis reproducibility by allowing users to define isolated environments with defined software versions, all of which are easily installed and managed without administrative privileges.
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9.
  • Hedin, Charlotte Rose Hawkey, et al. (author)
  • Effects of Tumor Necrosis Factor Antagonists in Patients With Primary Sclerosing Cholangitis
  • 2020
  • In: Clinical Gastroenterology and Hepatology. - : Elsevier BV. - 1542-3565 .- 1542-7714. ; 18:10, s. 2-2304
  • Journal article (peer-reviewed)abstract
    • Background & Aims: Few patients with primary sclerosing cholangitis (PSC) and inflammatory bowel diseases (IBDs) are exposed to tumor necrosis factor (TNF) antagonists because of the often mild symptoms of IBD. We assessed the effects of anti-TNF agents on liver function in patients with PSC and IBD, and their efficacy in treatment of IBD. Methods: We performed a retrospective analysis of 141 patients with PSC and IBD receiving treatment with anti-TNF agents (infliximab or adalimumab) at 20 sites (mostly tertiary-care centers) in Europe and North America. We collected data on the serum level of alkaline phosphatase (ALP). IBD response was defined as either endoscopic response or, if no endoscopic data were available, clinical response, as determined by the treating clinician or measurements of fecal calprotectin. Remission was defined more stringently as endoscopic mucosal healing. We used linear regression analysis to identify factors associated significantly with level of ALP during anti-TNF therapy. Results: Anti-TNF treatment produced a response of IBD in 48% of patients and remission of IBD in 23%. There was no difference in PSC symptom frequency before or after drug exposure. The most common reasons for anti-TNF discontinuation were primary nonresponse of IBD (17%) and side effects (18%). At 3 months, infliximab-treated patients had a median reduction in serum level of ALP of 4% (interquartile range, reduction of 25% to increase of 19%) compared with a median 15% reduction in ALP in adalimumab-treated patients (interquartile range, reduction of 29% to reduction of 4%; P =.035). Factors associated with lower ALP were normal ALP at baseline (P <.01), treatment with adalimumab (P =.090), and treatment in Europe (P =.083). Conclusions: In a retrospective analysis of 141 patients with PSC and IBD, anti-TNF agents were moderately effective and were not associated with exacerbation of PSC symptoms or specific side effects. Prospective studies are needed to investigate the association between use of adalimumab and reduced serum levels of ALP further.
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10.
  • Kalaitzakis, Evangelos, 1976, et al. (author)
  • Management of patients with biliary sphincter of Oddi disorder without sphincter of Oddi manometry
  • 2010
  • In: BMC Gastroenterology. - 1471-230X. ; 10:1
  • Journal article (peer-reviewed)abstract
    • Abstract Background The paucity of controlled data for the treatment of most biliary sphincter of Oddi disorder (SOD) types and the incomplete response to therapy seen in clinical practice and several trials has generated controversy as to the best course of management of these patients. In this observational study we aimed to assess the outcome of patients with biliary SOD managed without sphincter of Oddi manometry. Methods Fifty-nine patients with biliary SOD (14% type I, 51% type II, 35% type III) were prospectively enrolled. All patients with a dilated common bile duct were offered endoscopic retrograde cholangiopancreatography (ERCP) and sphincterotomy whereas all others were offered medical treatment alone. Patients were followed up for a median of 15 months and were assessed clinically for response to treatment. Results At follow-up 15.3% of patients reported complete symptom resolution, 59.3% improvement, 22% unchanged symptoms, and 3.4% deterioration. Fifty-one percent experienced symptom resolution/improvement on medical treatment only, 12% after sphincterotomy, and 10% after both medical treatment/sphincterotomy. Twenty percent experienced at least one recurrence of symptoms after initial response to medical and/or endoscopic treatment. Fifty ERCP procedures were performed in 24 patients with an 18% complication rate (16% post-ERCP pancreatitis). The majority of complications occurred in the first ERCP these patients had. Most complications were mild and treated conservatively. Age, gender, comorbidity, SOD type, dilated common bile duct, presence of intact gallbladder, or opiate use were not related to the effect of treatment at the end of follow-up (p > 0.05 for all). Conclusions Patients with biliary SOD may be managed with a combination of endoscopic sphincterotomy (performed in those with dilated common bile duct) and medical therapy without manometry. The results of this approach with regards to symptomatic relief and ERCP complication rate are comparable to those previously published in the literature in cohorts of patients assessed by manometry.
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