Adipokines as a link between obesity and chronic kidney disease
Published online on October 09, 2013
Abstract
Adipocytes secrete a number of bioactive adipokines that activate a variety of cell signaling pathways in central and peripheral tissues. Obesity is associated with altered production of many adipokines which is linked to a number of pathologies. As an increase in body weight is directly associated with an increased risk for developing chronic kidney disease (CKD), there is significant interest in the link between obesity and renal dysfunction. Altered levels of the adipokines leptin, adiponectin, resistin, and visfatin can decrease glomerular filtration and increase albuminuria which are pathophysiological changes typical of CKD. Specifically exposure of the glomerulus to altered adipokine levels can increase its permeability, fuse the podocytes, and cause mesangial cell hypertrophy, all of which alter the glomerular filtration rate. In addition the adipokines leptin and adiponectin can act on the tubular networks. Thus adipokines can act on multiple cell types in the development of renal pathophysiology. Importantly most studies have been performed using in vitro models, with future studies in vivo required to further elucidate the specific roles that adipokines play in the development and progression of CKD.