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- Nilsson, Peter, et al.
(författare)
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Smoking is associated with increased HbA1c values and microalbuminuria in patients with diabetes--data from the National Diabetes Register in Sweden
- 2004
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Ingår i: Diabetes Metab. - 1262-3636 .- 1878-1780. ; 30:3, s. 261-8
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVES: The aim was to examine trends in the proportion of smoking in diabetes patients, and to study associations between smoking, glycaemic control, and microalbuminuria. METHODS: Smoking habits were reported to the Swedish National Diabetes Register (NDR), with data from hospitals and primary health care. Patient characteristics included were age, gender, type of treatment, diabetes duration, HbA1c, BMI, blood pressure, antihypertensive and lipid-lowering drugs, and microalbuminuria. RESULTS: The proportion of smokers in type 1 diabetes was 12-15% during 1996-2001, it was high in females<30 years (12-16%), and was higher in the age group 30-59 years (13-17%) than in older (6-9%) patients. The corresponding proportion of smoking in type 2 diabetes was 10-12%, higher in those less than 60 years of age (17-22%) than in older (7-9%) patients. Smoking type 1 and type 2 patients in 2001 had higher mean HbA1c but lower mean BMI values than non-smokers. Smokers also had higher frequencies of microalbuminuria, in both type 1 (18 vs 14%) and type 2 (20% vs 13%) diabetes. Multiple logistic regression analyses disclosed that smoking was independently associated with elevated HbA1c levels (p<0.001) and microalbuminuria (p<0.001), but negatively with BMI (p<0.001), in both type 1 and type 2 diabetes. CONCLUSIONS: Smoking in patients with diabetes was widespread, especially in young female type 1, and in middle-aged type 1 and type 2 diabetes patients, and should be the target for smoking cessation campaigns. Smoking was associated with both poor glycaemic control and microalbuminuria, independently of other study characteristics.
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- Ahrén, Bo
(författare)
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Incretin dysfunction in type 2 diabetes: Clinical impact and future perspectives.
- 2013
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Ingår i: Diabetes & Metabolism. - : Elsevier BV. - 1878-1780 .- 1262-3636. ; 39:3, s. 195-201
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Forskningsöversikt (refereegranskat)abstract
- The incretin effect refers to the augmentation of insulin secretion after oral administration of glucose compared with intravenous glucose administration at matched glucose levels. The incretin effect is largely due to the release and action on beta-cells of the gut hormones glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1). This system has in recent years had considerable interest due to the success of incretin therapy as a glucose-lowering strategy in type 2 diabetes. In non-diabetic subjects, the incretin effect is responsible for 50-70% of insulin release during oral glucose administration. In type 2 diabetes patients, the incretin effect is impaired and contributes to only 20-35% of the insulin response to oral glucose. The reason for the defective incretin effect in type 2 diabetes has been the subject of many studies. Although the reports in the literature are mixed, most studies of GIP and GLP-1 secretory responses to oral glucose or a mixed meal have shown fairly normal results in type 2 diabetes. In contrast, the insulinotropic effects of both GIP and GLP-1 are impaired in type 2 diabetes with greater suppression of insulin secretion augmentation with GIP than with GLP-1. The suggested causes of these defects are a defective beta-cell receptor expression or post-receptor defects secondary to the diabetes milieu, defective beta-cell function in general resulting in defective incretin effect and genetic factors initiating incretin hormone resistance. Identifying the mechanisms in greater detail would be important for understanding the strengths, weaknesses and efficacy of incretin therapy in individual patients to more specifically target this glucose-lowering therapy.
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