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- Bille-Brahe, U, et al.
(författare)
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A repetition-prediction study of European parasuicide populations : a summary of the first report from part II of the WHO/EURO Multicentre Study on Parasuicide in co-operation with the EC concerted action on attempted suicide.
- 1997
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Ingår i: Acta Psychiatrica Scandinavica. - : Wiley. - 0001-690X .- 1600-0447. ; 95:2, s. 81-6
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Tidskriftsartikel (refereegranskat)abstract
- One of the aims of the European Study on Parasuicide, which was initiated by the Regional Office for the European Region of the World Health Organization in the mid-1980s, was to try to identify social and personal characteristics that are predictive of future suicidal behaviour. A follow-up interview study (the Repetition-Prediction Study) was designed, and to date 1145 first-wave interviews have been conducted at nine research centres, representing seven European countries. The present paper provides an abridged version of the first report from the study. The design and the instrument used (The European Parasuicide Study Interview Schedules, EPSIS I and II) are described. Some basic characteristics of the samples from the various centres, such as sex, age, method of suicide attempt, and history of previous attempts, are presented and compared. The male/female sex ratio ranged from 0.41 to 0.85; the mean age range for men was 33-45 years and that for women was 29-45 years. At all of the centres, self-poisoning was the most frequently employed method. On average, more than 50% of all respondents had attempted suicide at least once previously. The representativeness of the samples is discussed. There were differences between the centres in several respects, and also in some cases the representativeness of the different samples varied. Results obtained from analyses based on pooled data should therefore be treated with caution.
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- Wikström, Jakob D., et al.
(författare)
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A novel high throughput assay for islet respiration reveals uncoupling of rodent and human islets
- 2012
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Ingår i: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 7:5, s. e33023-
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Tidskriftsartikel (refereegranskat)abstract
- Background: The pancreatic beta cell is unique in its response to nutrient by increased fuel oxidation. Recent studies have demonstrated that oxygen consumption rate (OCR) may be a valuable predictor of islet quality and long term nutrient responsiveness. To date, high-throughput and user-friendly assays for islet respiration are lacking. The aim of this study was to develop such an assay and to examine bioenergetic efficiency of rodent and human islets. Methodology/Principal Findings: The XF24 respirometer platform was adapted to islets by the development of a 24-well plate specifically designed to confine islets. The islet plate generated data with low inter-well variability and enabled stable measurement of oxygen consumption for hours. The F1F0 ATP synthase blocker oligomycin was used to assess uncoupling while rotenone together with myxothiazol/antimycin was used to measure the level of non-mitochondrial respiration. The use of oligomycin in islets was validated by reversing its effect in the presence of the uncoupler FCCP. Respiratory leak averaged to 59% and 49% of basal OCR in islets from C57Bl6/J and FVB/N mice, respectively. In comparison, respiratory leak of INS-1 cells and C2C12 myotubes was measured to 38% and 23% respectively. Islets from a cohort of human donors showed a respiratory leak of 38%, significantly lower than mouse islets. Conclusions/Significance: The assay for islet respiration presented here provides a novel tool that can be used to study islet mitochondrial function in a relatively high-throughput manner. The data obtained in this study shows that rodent islets are less bioenergetically efficient than human islets as well as INS1 cells.
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- Connolly, Stuart J, et al.
(författare)
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Dronedarone in High-Risk Permanent Atrial Fibrillation
- 2011
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Ingår i: New England Journal of Medicine. - 0028-4793 .- 1533-4406. ; 365:24, s. 2268-2276
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Tidskriftsartikel (refereegranskat)abstract
- Background Dronedarone restores sinus rhythm and reduces hospitalization or death in intermittent atrial fibrillation. It also lowers heart rate and blood pressure and has antiadrenergic and potential ventricular anti-arrhythmic effects. We hypothesized that dronedarone would reduce major vascular events in high-risk permanent atrial fibrillation. Methods We assigned patients who were at least 65 years of age with at least a 6-month history of permanent atrial fibrillation and risk factors for major vascular events to receive dronedarone or placebo. The first coprimary outcome was stroke, myocardial infarction, systemic embolism, or death from cardiovascular causes. The second coprimary outcome was unplanned hospitalization for a cardiovascular cause or death. Results After the enrollment of 3236 patients, the study was stopped for safety reasons. The first coprimary outcome occurred in 43 patients receiving dronedarone and 19 receiving placebo (hazard ratio, 2.29; 95% confidence interval [CI], 1.34 to 3.94; P=0.002). There were 21 deaths from cardiovascular causes in the dronedarone group and 10 in the placebo group (hazard ratio, 2.11; 95% CI, 1.00 to 4.49; P=0.046), including death from arrhythmia in 13 patients and 4 patients, respectively (hazard ratio, 3.26; 95% CI, 1.06 to 10.00; P=0.03). Stroke occurred in 23 patients in the dronedarone group and 10 in the placebo group (hazard ratio, 2.32; 95% CI, 1.11 to 4.88; P=0.02). Hospitalization for heart failure occurred in 43 patients in the dronedarone group and 24 in the placebo group (hazard ratio, 1.81; 95% CI, 1.10 to 2.99; P=0.02). Conclusions Dronedarone increased rates of heart failure, stroke, and death from cardiovascular causes in patients with permanent atrial fibrillation who were at risk for major vascular events. Our data show that this drug should not be used in such patients.
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