Effects of peroxisome proliferator-activated receptor-α and -γ agonist, JTT-501, on diabetic complications in Zucker diabetic fatty rats

Authors


Central Pharmaceutical Research Institute, Japan Tobacco, Inc., 1-1, Murasaki-cho, Takatsuki, Osaka, Japan

Abstract

  • This study has investigated the effects of JTT-501, a peroxisome proliferator-activated receptor (PPAR)-α and PPAR-γ agonist, on the pathogenesis of diabetic complications in the Zucker diabetic fatty (ZDF) rats, a model of type 2 diabetes. Comparison is made with troglitazone, a PPAR-γ agonist.

  • The ZDF rats exhibited hyperglycaemia and hyperlipidaemia, and developed diabetic complications such as cataract, nephropathy, and neuropathy. Treatment with JTT-501 from the prediabetic stage controlled glycaemia and lipidaemia, and prevented the development of diabetic complications. Troglitazone was less effective in controlling serum cholesterol and neuropathy.

  • ZDF rats developed diabetic osteopenia with reduced bone turnover, and this was prevented by JTT-501 and troglitazone, possibly mediated by increased bone turnover and bone formation.

  • Since JTT-501 controlled glycaemia and lipidaemia in ZDF rats and prevented several diabetic complications, it is suggested that treatment with JTT-501, which activates both PPAR-α and PPAR-γ, could provide a valuable therapeutic approach against diabetic complications in type 2 diabetes.

British Journal of Pharmacology (2000) 130, 495–504; doi:10.1038/sj.bjp.0703328

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