noun. A polypeptide hormone that is secreted by fat cells and regulates glucose and lipid metabolism, especially by increasing insulin sensitivity and muscle uptake of glucose and by decreasing glucose production in the liver.

noun. A protein hormone that modulates glucose regulation and fatty acid catabolism.

""Ethnic variation in adiponectin and leptin levels and their association with adiposity and insulin resistance.""

cell-surface  chemokine  erythropoietin  ghrelin  glucocorticoid