[Lipid metabolism related nuclear receptor--the structure, function, expression and classification of peroxisome proliferation-activated receptor (PPAR)].

Peroxisome proliferator-activated receptors (PPARs) belongs to the nuclear hormone receptor superfamily. So far three different subtypes of PPAR (alpha, gamma, and delta (beta)) have been identified in amphibians, chicken, rodents and man. These receptors are transcription factors that control the beta-oxidation and transport pathways of fatty acids and adipocyte differentiation containing fatty acid synthesis under the modification of PPAR activation with CBP and its analogs. Thus, PPARs play an important role in lipid metabolism. Furthermore, altered fatty acid levels are associated with obesity, diabetes, hypertension and atherosclerosis, so PPARs may serve as molecular sensors in these metabolic disorders.