| 1. |
- Locke, Adam E, et al.
(författare)
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Genetic studies of body mass index yield new insights for obesity biology.
- 2015
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Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 518:7538, s. 197-401
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Tidskriftsartikel (refereegranskat)abstract
- Obesity is heritable and predisposes to many diseases. To understand the genetic basis of obesity better, here we conduct a genome-wide association study and Metabochip meta-analysis of body mass index (BMI), a measure commonly used to define obesity and assess adiposity, in up to 339,224 individuals. This analysis identifies 97 BMI-associated loci (P < 5 × 10(-8)), 56 of which are novel. Five loci demonstrate clear evidence of several independent association signals, and many loci have significant effects on other metabolic phenotypes. The 97 loci account for ∼2.7% of BMI variation, and genome-wide estimates suggest that common variation accounts for >20% of BMI variation. Pathway analyses provide strong support for a role of the central nervous system in obesity susceptibility and implicate new genes and pathways, including those related to synaptic function, glutamate signalling, insulin secretion/action, energy metabolism, lipid biology and adipogenesis.
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| 2. |
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| 3. |
- Shungin, Dmitry, et al.
(författare)
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New genetic loci link adipose and insulin biology to body fat distribution.
- 2015
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Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 518:7538, s. 187-378
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Tidskriftsartikel (refereegranskat)abstract
- Body fat distribution is a heritable trait and a well-established predictor of adverse metabolic outcomes, independent of overall adiposity. To increase our understanding of the genetic basis of body fat distribution and its molecular links to cardiometabolic traits, here we conduct genome-wide association meta-analyses of traits related to waist and hip circumferences in up to 224,459 individuals. We identify 49 loci (33 new) associated with waist-to-hip ratio adjusted for body mass index (BMI), and an additional 19 loci newly associated with related waist and hip circumference measures (P < 5 × 10(-8)). In total, 20 of the 49 waist-to-hip ratio adjusted for BMI loci show significant sexual dimorphism, 19 of which display a stronger effect in women. The identified loci were enriched for genes expressed in adipose tissue and for putative regulatory elements in adipocytes. Pathway analyses implicated adipogenesis, angiogenesis, transcriptional regulation and insulin resistance as processes affecting fat distribution, providing insight into potential pathophysiological mechanisms.
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| 4. |
- Gudbjörnsdottir, Soffia, 1962, et al.
(författare)
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[The National Diabetes Registry 1996-2003. Quality assessment shows improved diabetic care]
- 2004
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Ingår i: Lakartidningen. - 0023-7205. ; 101:47, s. 3790, 3793-7
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Forskningsöversikt (refereegranskat)abstract
- The Swedish National Diabetes Register presents results during the period 1996-2003. Quality of care data from more than 75,000 diabetic patients (2003) treated at medical departments and primary health care centres are evaluated concerning national goals of HbA1c < 6.5% and BP < 140/85 mm Hg, the prevalence of lipid treatment, smoking etc. The national goals of HbA1c and BP were reached with increasing degree in cross-sectional analysis during the period, and were achieved by 33% and 71% at medical departments, and by 61% and 48% in primary health care in 2003. A similar tendency was also seen in longitudinal analysis of subgroups 1996-2003. The use of antihypertensive and lipid-lowering drugs was also considerably increased. This should imply a reduction of the risk for diabetic complications. As the national goals are still difficult to reach, individual goals should be set for the treatment.
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| 5. |
- Lindberg, Anne, et al.
(författare)
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Low nicotine dependence and high self-efficacy can predict smoking cessation independent of the presence of chronic obstructive pulmonary disease: a three year follow up of a population-based study
- 2015
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Ingår i: Tobacco Induced Diseases. - : E.U. European Publishing. - 1617-9625. ; 13
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Tidskriftsartikel (refereegranskat)abstract
- Background: Smoking is a major risk factor for chronic obstructive pulmonary disease (COPD), and smoking cessation is the only intervention that slows disease progression. It is important to know whether current factors related to smoking and smoking cessation are different among subjects with and without COPD in order to support smoking cessation. The aim of this study was to evaluate factors related to smoking cessation and to compare characteristics and nicotine dependence among smokers with and without COPD. Methods: In 2005, 1614 subjects in a population-based longitudinal study of subjects with COPD and controls were examined. The Fagerstrom Test for Nicotine Dependence (FTND) and motivation for smoking cessation were assessed for current smokers (n = 299 total, 194 with COPD). Data on smoking cessation were collected in a follow-up in 2008 (n = 240). Results: Smokers with COPD had more pack-years and respiratory symptoms than smokers without COPD, whereas higher FTND scores were associated with anxiety/depression and respiratory symptoms in both groups. Nineteen percent of the smokers had quit smoking by the follow-up 3 years later, and they had significantly lower FTND scores (2.54 vs. 3.75, p < 0.001) and higher self-efficacy scores (10.0 vs. 6.0, p = 0.020) at baseline than the sustained smokers. Smoking cessation was related to low FTND scores and high self-efficacy independent of the presence of COPD, respiratory symptoms, anxiety/depression, and heart disease. Conclusions: The FTND score and a simple visual analog scale for assessing self-efficacy seem to be valuable instruments for predicting smoking cessation over several years, independent of COPD, respiratory symptoms, presence of anxiety/depression, and heart disease.
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| 6. |
- Menesini, E., et al.
(författare)
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Cyberbullying Definition Among Adolescents: A Comparison Across Six European Countries
- 2012
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Ingår i: Cyberpsychology Behavior and Social Networking. - : Mary Ann Liebert Inc. - 2152-2715 .- 2152-2723. ; 15:9, s. 455-463
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Tidskriftsartikel (refereegranskat)abstract
- Several criteria have been proposed for defining cyberbullying to young people, but no studies have proved their relevance. There are also variations across different countries in the meaning and the definition of this behavior. We systematically investigated the role of five definitional criteria for cyberbullying, in six European countries. These criteria (intentionality, imbalance of power, repetition, anonymity, and public vs. private) were combined through a set of 32 scenarios, covering a range of four types of behaviors (written-verbal, visual, exclusion, and impersonation). For each scenario, participants were asked whether it was cyberbullying or not. A randomized version of the questionnaire was shown to 295 Italian, 610 Spanish, 365 German, 320 Sweden, 336 Estonian, and 331 French adolescents aged 11-17 years. Results from multidimensional scaling across country and type of behavior suggested a clear first dimension characterized by imbalance of power and a clear second dimension characterized by intentionality and, at a lower level, by anonymity. In terms of differences across types of behaviors, descriptive frequencies showed a more ambiguous role for exclusion as a form of cyberbullying, but general support was given to the relevance of the two dimensions across all the types of behavior. In terms of country differences, French participants more often perceived the scenarios as cyberbullying as compared with those in other countries, but general support was found for the relevance of the two dimensions across countries.
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| 7. |
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| 8. |
- Ortqvist, E., et al.
(författare)
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Temporary preservation of beta-cell function by diazoxide treatment in childhood type 1 diabetes
- 2004
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Ingår i: Diabetes Care. - : American Diabetes Association. - 0149-5992 .- 1935-5548. ; 27:9, s. 2191-7
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: We examined the effect of diazoxide, an ATP-sensitive K(+) channel opener and inhibitor of insulin secretion, on beta-cell function and remission in children at clinical onset of type 1 diabetes. RESEARCH DESIGN AND METHODS: A total of 56 subjects (21 girls and 35 boys, age 7-17 years) were randomized to 3 months of active treatment (diazoxide 5-7.5 mg/kg in divided doses) or placebo in addition to multiple daily insulin injections and were followed for 2 years. RESULTS: Diazoxide decreased circulating C-peptide concentrations by approximately 50%. After cessation of the treatment, basal and meal-stimulated C-peptide concentrations increased to a maximum at 6 months, followed by a decline. Meal-stimulated C-peptide concentration was significantly higher at 12 months (0.43 +/- 0.22 vs. 0.31 +/- 0.26 nmol/l, P = 0.018) and tended to fall less from clinical onset to 24 months in the diazoxide- vs. placebo-treated patients (-0.05 +/- 0.24 vs. -0.18 +/- 0.26 nmol/l, P = 0.064). At 24 months, the meal-stimulated C-peptide concentrations were 0.24 +/- 0.20 and 0.20 +/- 0.17 nmol/l, respectively. Side effects of diazoxide were prevalent. CONCLUSIONS: This study demonstrates that partial inhibition of insulin secretion for 3 months at onset of childhood type 1 diabetes suspends the period of remission and temporarily preserves residual insulin production. Further evaluation of the full potential of beta-cell rest will require compounds with less side effects as well as protocols optimized for sustained secretory arrest.
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| 9. |
- Wennberg, Ann-Marie, 1956, et al.
(författare)
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Photodynamic therapy with methyl aminolevulinate for prevention of new skin lesions in transplant recipients: a randomized study
- 2008
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Ingår i: Transplantation. - 0041-1337 .- 1534-6080. ; 86:3, s. 423-9
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Organ transplant recipients on long-term immunosuppressive therapy are at increased risk of non-melanoma skin lesions. Repeated field photodynamic therapy using topical methyl aminolevulinate (MAL) may have potential as a preventive treatment. METHODS: This open randomized, intrapatient, comparative, multicenter study included 81 transplant recipients with 889 lesions (90% actinic keratoses (AK)]. In each patient, the study treatment was initially administered to one 50 cm area on the face, scalp, neck, trunk, or extremities (n=476 lesions) twice (1 week apart), with additional single treatments at 3, 9, and 15 months. On each occasion, the area was debrided gently and MAL cream (160 mg/g) applied for 3 hr, before illumination with noncoherent red light (630 nm, 37 J/cm2). The control, 50 cm2 area (n=413 lesions) received lesion-specific treatment (83% cryotherapy) at baseline and 3, 9, and 15 months. Additionally, all visible lesions were given lesion-specific treatment 21 and 27 months in both treatment and control areas. RESULTS: At 3 months, MAL photodynamic therapy significantly reduced the occurrence of new lesions (65 vs. 103 lesions in the control area; P=0.01), mainly AK (46% reduction; 43 vs. 80; P=0.006). This effect was not significant at 27 months (253 vs. 312; P=0.06). Hypopigmentation, as assessed by the investigator, was less evident in the treatment than control areas (16% vs. 51% of patients; P<0.001) at 27 months. CONCLUSION: Our results suggest that repeated field photodynamic therapy using topical MAL may prevent new AK in transplant recipients although further studies are needed.
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