Impact of bariatric surgery on apolipoprotein C-III levels and lipoprotein distribution in obese human subjects.

Background: Elevated apolipoprotein C-III (apoC-III) has been postulated to contribute to the atherogenic dyslipidemia seen in obesity and insulin-resistant states, mainly by impairing plasma triglyceride-rich lipoprotein (TRL) metabolism. Bariatric surgery is associated with improvements of several obesity-associated metabolic abnormalities, including a reduction in plasma triglycerides (TGs) and an increase in plasma high-density lipoprotein cholesterol (HDL-C).

Objectives: We investigated the specific effect of bariatric surgery on apoC-III concentrations in plasma, non-HDL, and HDL fractions in relation to lipid profile parameters evolution.

Effects of bariatric surgery on hepatic and intestinal lipoprotein particle metabolism in obese, nondiabetic humans.

Objective: The dyslipidemia of obesity and other insulin-resistant states is characterized by the elevation of plasma triglyceride-rich lipoproteins (TRL) of both hepatic (apoB-100-containing very low-density lipoprotein) and intestinal (apoB-48-containing chylomicrons) origin. Bariatric surgery is a well-established and effective modality for the treatment of obesity and is associated with improvements in several metabolic abnormalities associated with obesity, including a reduction in plasma triglycerides. Here, we have investigated the effect of bariatric surgery on TRL metabolism.

[Prevalence and risk factors of overweight among 5- to 11-year-old schoolchildren in Narbonne, France].

In order to address the increasing prevalence of overweight and obesity in children, the French city of Narbonne recently began monitoring childhood obesity with a view to developing and implementing targeted actions to stabilize the prevalence of overweight. The main purpose of this study was to assess the risk factors for overweight in children. The study was conducted during the 2008-2009 academic year and was based on a sample of 1,476 preschool and primary school children from all public and private schools in Narbonne.

Absence of acute inhibitory effect of insulin on chylomicron production in type 2 diabetes.

Objective: Overproduction of intestinally derived apoB-48-containing triglyceride-rich lipoproteins (TRLs) (chylomicrons) has recently been described in type 2 diabetes, as is known for hepatic TRL-apoB-100 (very-low-density lipoprotein) production. Furthermore, insulin acutely inhibits both intestinal and hepatic TRL production, whereas this acute inhibitory effect on very-low-density lipoprotein production is blunted in type 2 diabetes. It is not currently known whether this acute effect on chylomicron production is similarly blunted in humans with type 2 diabetes.