Minireview: Lipid metabolism, metabolic diseases, and peroxisome proliferator-activated receptors

被引:703
作者
Lee, CH
Olson, P
Evans, RM
机构
[1] Salk Inst Biol Studies, Howard Hughes Med Inst, Gene Express Lab, La Jolla, CA 92037 USA
[2] Univ Calif San Diego, Dept Biol, La Jolla, CA 92037 USA
关键词
D O I
10.1210/en.2003-0288
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Lipid and carbohydrate homeostasis in higher organisms is under the control of an integrated system that has the capacity to rapidly respond to metabolic changes. The peroxisome proliferator-activated receptors WARS) are nuclear fatty acid receptors that have been implicated to play an important role in obesity-related metabolic diseases such as hyperlipidemia, insulin resistance, and coronary artery disease. The three PPAR subtypes, alpha, gamma, and delta, have distinct expression patterns and evolved to sense components of different lipoproteins and regulate lipid homeostasis based on the need of a specific tissue. Recent advances in identifying selective ligands in conjunction with microarray analyses and gene targeting studies have helped delineate the subtype-specific functions and the therapeutic potential of these receptors. PPARalpha potentiates fatty acid catabolism in the liver and is the molecular target of the lipid-lowering fibrates (e.g. fenofibrate and gemfibrozil), whereas PPARgamma is essential for adipocyte differentiation and mediates the activity of the insulin-sensitizing thiazolidinediones (e.g. rosiglitazone and pioglitazone). Recent evidence suggests that PPARdelta may be important in controlling triglyceride levels by sensing very low-density lipoprotein. Thus, uncovering the regulatory mechanisms and transcriptional targets of the PPARs will continue to provide insight into the pathogenesis of metabolic diseases and, at the same time, offer valuable information for rational drug design.
引用
收藏
页码:2201 / 2207
页数:7
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