Long-Term Outcomes of Biliopancreatic Diversion on Glycemic Control, Insulin Sensitivity and Beta Cell Function.

Background: We aimed to assess the long-term outcomes of biliopancreatic diversion (BPD) surgery on glycemic control, insulin sensitivity (IS), and beta cell function using complementary oral and intravenous dynamic tests.

Methods: A total of 57 women were divided into three groups: 19 lean, 18 obese (both groups with normal glucose tolerance (NGT)), and 20 obese with type 2 diabetes who underwent BPD and were reassessed 12 months after the procedure. OGTTs and hyperglycemic clamps (HG) were performed.

Neck circumference as a simple tool for identifying the metabolic syndrome and insulin resistance: results from the Brazilian Metabolic Syndrome Study.

Objective: To investigate the relationship of the neck circumference (NC) with the metabolic syndrome (MetS) and insulin resistance (IR) in a large Brazilian population-based sample, within a wide range of adiposity and glucose tolerance, and to establish cut-off values of the NC for MetS and IR.

Context: The NC correlates with cardiovascular risk factors, IR and components of MetS. Upper-body subcutaneous (sc) fat, as estimated by the NC, is associated with cardiovascular risk factors as much as abdominal fat, which is usually estimated by the waist circumference (WC).