Association of two apolipoprotein A-I gene MspI polymorphisms with high density lipoprotein (HDL)-cholesterol levels and indices of obesity in selected healthy Chinese subjects and in patients with early-onset type 2 diabetes

OBJECTIVE: Previous studies have reported associations between two apolipoprotein A-I (apoA-I) gene MspI polymorphisms (G-75A and C83T) and high density lipoprotein (HDL)-cholesterol and/or apoA-I levels, but have not investigated the relationship with obesity. METHODS: We determined the distribution of these polymorphisms in 482 early-onset (< or = 40 years) Type 2 Chinese diabetics and 167 Chinese selected healthy controls. RESULTS: The -75A and 83T allele frequencies were similar in the diabetic and healthy subjects. In the healthy control subjects, HDL-cholesterol levels were significantly higher in the AA homozygotes than in the GG/GA carriers (1.74 +/- 0.58 vs. 1.45 +/- 0.58 mmol/l, P<0.001). Furthermore, analyses showed a significant relationship between increasing HDL-cholesterol tertiles and the AA genotype frequency in the selected healthy subjects (3.6, 8.9 and 16.1%, P=0.026). For the C83T polymorphism, healthy male CT carriers had higher HDL-cholesterol levels than CC homozygotes (1.71 +/- 0.57 vs. 1.25 +/- 0.30 mmol/l, P=0.001), but this was not found in females. No relationship between these polymorphisms and lipid levels was found in the diabetics, who had a more adverse lipid profile than the selected controls. In the diabetics, but not the controls, in CT carriers compared to CC homozygotes there were lower levels of body mass index (BMI; 23.8 +/- 3.9 vs. 25.4 +/- 4.7 kg/m2, P=0.048) and waist-to-height ratio (0.49 +/- 0.06 vs. 0.52 +/- 0.07, P=0.023), and this relationship was supported by tertile analysis. CONCLUSIONS: The -75AA genotype was associated with higher HDL-cholesterol levels in the selected healthy, but not diabetic, subjects. The 83T allele was associated with greater indices of obesity in the diabetic patients, and with higher HDL-cholesterol in heterozygous healthy male subjects.postprin

Incidence of Diabetes in the Working Population in Spain: Results from the ICARIA Cohort

INTRODUCTION: Our objective was to evaluate the incidence of type 2 diabetes mellitus (T2DM) in a working population in Spain and to assess associations between its development and several risk factors. METHODS: The ICARIA (Ibermutuamur CArdiovascular RIsk Assessment) cohort (n = 627,523) includes ~3% of Spanish workers. This analysis was undertaken in individuals whose glycaemic status during the index period (May 2004-December 2007) was determined to be normal or indicative of prediabetes [fasting plasma glucose (FPG) 100-125 mg/dl] and who had at least one FPG measurement taken 9 months after a first measurement during follow-up (May 2004-June 2014) (n = 380,366). T2DM patients were defined as those with an FPG ? 126 mg/day and those who had already been diagnosed with T2DM or were taking antihyperglycaemic medications. RESULTS: The incidence rate of T2DM was 5.0 [95% confidence interval (CI) 4.9-5.1] cases per 1000 person-years. Under multivariate logistic regression analysis, the factor showing the strongest association with the occurrence of T2DM was the baseline FPG level, with the likelihood of T2DM almost doubling for every 5 mg/dl increase in baseline FPG between 100 and < 126 mg/dl. The presence of other cardiometabolic risk factors and being a blue-collar worker were also significantly associated with the occurrence of T2DM. CONCLUSIONS: The incidence of T2DM in the working population was within the range encountered in the general population and prediabetes was found to be the strongest risk factor for the development of diabetes. The workplace is an appropriate and feasible setting for the assessment of easily measurable risk factors, such as the presence of prediabetes and other cardiometabolic factors, to facilitate the early detection of individuals at higher risk of diabetes and the implementation of diabetes prevention programmes

The prevalence of diabetes mellitus and impaired glucose tolerance in the Hong Kong population (Abstract)

Conference Theme: Diabetes towards the New Millenniu

T lymphocyte activation in euthyroid Graves' ophthalmopathy: Soluble interleukin 2 receptor release, cellular interleukin 2 receptor expression and interleukin 2 production

The present study was undertaken to examine the cellular control arm of the immune response with regard to T lymphocyte proliferation in euthyroid Graves' ophthalmopathy. Twenty patients with euthyroid Graves' ophthalmopathy (7 on antithyroid drugs and 13 on no treatment) and 18 healthy controls were studied in an infection-free period. Mitogen-stimulated cellular interleukin 2 (IL2) receptor expression, soluble interleukin 2 receptor release, and interleukin 2 production, were studied in peripheral blood mononuclear cells cultured for 24 h. The cellular IL2 receptor expression and soluble IL2 receptor release did not differ between the patients and healthy controls. In contrast, IL2 production in response to pokeweed mitogen stimulation was increased in lymphocytes from patients with Graves' ophthalmopathy. The IL2 release did not correlate with the quantities of cellular and soluble IL2 receptor. The mitogen-stimulated cellular IL2 receptor expression, IL2 receptor rleease, and IL2 production did not differ between patients with or without carbimazole therapy. Despite a suggested role of autoreactive T cells in mediating the development and propagation of autoimmune thyroid disease, this study fails to demonstrate a defective T lymphocyte activation state in patients with Graves' ophthalmopathy during an euthyroid state.link_to_subscribed_fulltex

Serum soluble interleukin 2 receptor in hyperthyroid Graves' disease and effect of carbimazole therapy

To study the activation of T lymphocytes in hyperthyroid Graves' disease, the serum concentrations of soluble interleukin 2 receptors (sIL2R) were determined during active thyrotoxicosis and following the return to a euthyroid state with carbimazole therapy. Serum sIL2R was measured by an enzyme linked immunoassay. The mean ± SD serum sIL2R concentration during untreated hyperthyroidism was elevated as compared with controls (919.1 ± 523.4 vs 374.2 ± 189.4 U/ml, P < 0.005). However, after carbimazole therapy the serum sIL2R in euthyroid patients fell to 377.9 ± 90.3 U/ml, which did not differ from healthy controls. Serum sIL2R correlated significantly with the serum free T3 only during hyperthyroidism (r = 0.678, P < 0.01). Our study suggests that in vivo measurement of serum sIL2R released from activated T lymphocytes is a useful immunological indicator of disease activity.link_to_subscribed_fulltex