Journal of Animal Science, Vol 76, Issue 1 61-65, Copyright © 1998 by American Society of Animal Science

JOURNAL ARTICLE

The interaction between vitamin A and thiazolidinedione on bovine adipocyte differentiation in primary culture

M. Ohyama, K. Matsuda, S. Torii, T. Matsui, H. Yano, T. Kawada and T. Ishihara
Department of Animal Science, Faculty of Agriculture, Kyoto University, Japan.

We studied the effects of a thiazolidinedione (T-174) and retinoids on adipocyte differentiation in beef cattle. Stromal-vascular (SV) cells containing preadipocytes were prepared from perirenal adipose tissue of 21-mo-old Japanese Black steers. After confluence, these cells were cultured in 25 microM T-174, which is a specific ligand for an adipogenesis stimulating nuclear receptor (i.e., gamma subtype of peroxisome proliferator-activated receptor [PPARgamma]), with 1 microM all-trans retinoic acid (RA) or .4 to 40 microg/100 mL of retinol for 10 to 14 d. The number of cells accumulating lipid droplets was counted as morphologically differentiated adipocytes, and the activity of glycerol-3-phosphate dehydrogenase (GPDH), a biochemical index for the differentiation, was determined. The number of lipid-laden cells and GPDH activity were increased by the addition of T-174. All-trans retinoic acid completely blocked the stimulative action of T-174. The addition of retinol also decreased the number of lipid-laden cells and GPDH activity in a dose-dependent manner. These results showed that the thiazolidinedione stimulated adipocyte differentiation and the retinoids blocked the adipogenesis induced by the thiazolidinedione in primary culture of bovine SV cells. Peroxisome proliferator-activated receptor gamma may play an important role in adipocyte differentiation, and retinoids may interfere with the action of PPARgamma in cattle.

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