[Association of adipocytokines with obesity and insulin resistance in Korean-Chinese and Han nationality pupils of Yanbian area].

Objective: To investigate the different types of obesity, insulin resistance (IR) and its related adipocytokines, and to analyze the association of adipocytokines with obesity and insulin resistance in Korean-Chinese and Han nationality pupils of Yanbian area.

Methods: A total of 3879 elementary school students (2011 of Korean-Chinese and 1868 of Han nationality) aged 8-12 years old were selected. Using epidemiological investigation.

Ouabain stimulates atrial natriuretic peptide secretion via the endothelin-1/ET(B) receptor-mediated pathway in beating rabbit atria.

Aims: Ouabain has been reported to increase the secretion of atrial natriuretic peptide (ANP) in vitro. However, the mechanism by which ouabain increases ANP secretion is not well known. Therefore, the purpose of the present study was to investigate the underlying mechanism of ouabain-stimulated ANP secretion.

Enantioselective resolution of thyroxine hormone by high-performance liquid chromatography utilizing a highly fluorescent chiral tagging reagent.

A highly fluorescent chiral tagging reagent, 4-(3-isothiocyanatopyrrolidin-1-yl)-7-(N,N-dimethylaminosulfonyl-2,1,3-benzoxadiazole, [R(-)-DBD-PyNCS], was employed to develop an indirect resolution method for efficient separation of thyroxine enantiomers,D-T(4) and L-T(4). The reaction of R(-)-DBD-PyNCS with the thyroxine enantiomers proceeds effectively at 40 degrees C for 20 min in the presence of basic medium to produce the corresponding pair of diastereomers. No racemization occurs during the tagging reaction under the optimized conditions.