Acute exercise increases serum retinol binding protein 4 concentrations

Dried blood spot retinol and retinol-binding protein concentrations using enzyme immunoassay as surrogates of serum retinol concentrations

Changes of Serum Retinol Binding Protein 4 Levels Following 8 Weeks Moderate Aerobic Exercise

PURPOSE The purpose of this study was to examine the effects of 8 weeks moderate intensity aerobic exercise on serum retinol binding protein 4 (RBP4) levels in female athletes. METHODS Twenty female karate athletics were randomly assigned to one of the exercise group (n = 10) or control group (n = 10). The training group performed endurance training 3 days a week for 8 weeks at an intensity c...

Retinol-Binding Protein 4 in Twins

OBJECTIVE Retinol-binding protein (RBP) 4 is an adipokine of which plasma levels are elevated in obesity and type 2 diabetes. The aims of the study were to identify determinants of plasma RBP4 and RBP4 mRNA expression in subcutaneous adipose tissue (SAT) and skeletal muscle and to investigate the association between RBP4 and in vivo measures of glucose metabolism. RESEARCH DESIGN AND METHODS ...

Retinol-binding protein 4 in human obesity.

Studies in mice suggest that adipocytes serve as glucose sensors and regulate systemic glucose metabolism through release of serum retinol-binding protein 4 (RBP4). This model has not been validated in humans. RBP4 was highly expressed in isolated mature human adipocytes and secreted by differentiating human adipocytes. In contrast to the animal data, RBP4 mRNA was downregulated in subcutaneous...

Insulin-sensitizing effects of exercise on adiponectin and retinol-binding protein-4 concentrations in young and middle-aged women.

CONTEXT Exercise training enhances insulin sensitivity. Changes in retinol-binding protein-4 (RBP4) and adiponectin levels are linked to insulin resistance. OBJECTIVE We tested whether the insulin-sensitizing effect of exercise is associated with age-related changes in circulating RBP4 and adiponectin levels in women. DESIGN, SUBJECTS, AND INTERVENTION We studied 36 healthy young (22.4 +/- ...