Post-prandial alterations in LDL size and subclasses in patients with growth hormone deficiency
Abstract Objective Several studies have suggested that lipoproteins generated during the post-prandial phase are highly atherogenic, with modifications in low-density lipoproteins (LDL) size and density. In the present study we assessed post-prandial variations in LDL size and subclasses in patients with growth hormone deficiency (GHD). Design We studied in 12 hypopituitary patients with GHD and 10 healthy control subjects matched for gender, age and body mass index (BMI) post-prandial variations after a standardized meal consisting of 35% fat, 45% carbohydrate and 20% of protein (Clinutren Mix ® , Nestle) and containing calories corresponding to 1/3 of estimated basal metabolic rate. Blood…
Comparative effects of rosiglitazone and pioglitazone on fasting and postprandial low-density lipoprotein size and subclasses in patients with Type 2 diabetes
To assess the effects of pioglitazone and rosiglitazone on fasting and postprandial low-density lipoprotein (LDL) size and subclasses in patients with Type 2 diabetes.Nine Type 2 diabetic patients (age 61 +/- 10 years, body mass index 30 +/- 5 kg/m(2), glycosylated hemoglobin [HbA1c] 7.5 +/- 0.5%) were randomized in a crossover trial to rosiglitazone 4 mg b.i.d. or pioglitazone 45 mg/day for 12 weeks with an 8-week wash-out period. LDL size and subclasses were determined by non-denaturing polyacrylamide gradient gel electrophoresis. A standardized breakfast was served and variables were assessed after 3 and 6 h.HbA1c, insulin sensitivity (as assessed by the homeostasis model assessment) and…
COMPARATIVE EFFECTS OF ROSIGLITAZONE AND PIOGLITAZONE ON FASTING AND POSTPRANDIAL LDL-SIZE AND SUBCLASSES IN PATIENTS WITH TYPE-2 DIABETES
The differential effects of thiazolidindiones on atherogenic dyslipidemia in type 2 diabetes: what is the clinical significance?
Diabetic dyslipidemia is typically characterized by an increase in plasma triglycerides, a decrease in high-density lipoprotein cholesterol and a concomitant increase in atherogenic small dense low-density lipoproteins. Thiazolidindiones are able to lower the levels of fasting glucose and glycated hemoglobin significantly by improving insulin sensitivity, as well as improving some aspects of diabetic dyslipidemia: total cholesterol, low-density lipoprotein cholesterol and high-density lipoprotein cholesterol tend to increase while triglycerides are generally decreased.This paper reviewed the effects of pioglitazone and rosiglitazone on atherogenic diabetic dyslipidemia, in particular on sma…
Atherogenic lipoprotein phenotype and low-density lipoprotein size and subclasses in patients with growth hormone deficiency before and after short-term replacement therapy
Objective: Patients with growth hormone deficiency (GHD) have increased cardiovascular risk and may show elevated triglyceride and reduced high density lipoprotein (HDL) cholesterol concentrations, two lipid abnormalities usually accompanied by increased small dense LDL in the ‘atherogenic lipoprotein phenotype’ (ALP). In the present study, we directly investigated (1) whether hypopituitary patients with GHD have increased small dense LDL; (2) whether growth hormone replacement therapy (GHRT) beneficially impact on such particles; (3) the prevalence of ALP in GHD and GHRT patients. Design and methods: In 14 hypopituitary patients with GHD (44 ± 13 years, body mass index (BMI) 27 ± 3) before…