Review Article

Peroxisome Proliferator-Activated Receptors in the Modulation of the Immune/Inflammatory Response in Atherosclerosis

Table 1

Properties and agonists of PPARs.

CharacteristicPPAR-αPPAR-γPPAR-δ/β

General distributionLiver, heart, kidney, muscle. Endothelial cellsHeart, intestine, kidney, pancreas, spleen, muscle, adipose tissueLiver, intestine, kidney, abdominal adipose tissue, skeletal muscle
Natural ligandsSaturated and unsaturated fatty acids; arachidonic acid-derived eicosanoids from the lipoxygenase pathway: 8-S-hydroxyeicosatetraenoic acid and leukotriene B4; insulin; oxidized LDLLinoleic acid, linolenic acid, arachidonic acid, eicosapentenoic acid, 15-deoxy 12, 14-prostaglandin J2; 15-LOX metabolites (9-HODE and 13-HODE)Saturated and unsaturated fatty acids; eicosanoids: PGA1 and PGD2
Synthetic agonistsHypolipidemic fibrate drugs: fenofibrate, genfibrozil; plasticizers, ureidofibrates; WY14643, JTT-501, GW-2331 and PD72953Antidiabetic thiazolidinediones: pioglitazone, troglitazone, rosiglitazone (BRL-49653), MCC-555; isoxazolidinedione JTT-501; tyrosine-based agonist: GI2-62570, GW-1929, and GW-7845 from GSK; α-alcoxy-β-phenylpropanoic acid; weak agonist: LTD4 receptor antagonist LY-171883; COX inhibitors: indomethacin, ibuprofen, fenoprofen, and flufenamic acid. Docosohexanoic derivativesLeukotriene antagonist L-165041; phenylacetic derivatives L-796449 and L-783483; GW-2433, GW-501516, GW0742X; carbaprostacyclin
Gene/protein expression affectedLipoprotein lipase, Apo CIII, Apo AI, Apo AII, fatty acid transporter protein, Acyl-CoA synthetase, mitochondrial HMG-CoA synthase, mitochondrial uncoupling protein 1Acyl-CoA synthetase, fatty acid transporter protein, CD 36, lipoprotein lipase, TNF-α mitochondrial uncoupling protein 1–3; insulin-dependent glucose transporter 4Fatty acid transporter protein, CD 36, fatty acid translocase, adipocyte lipid-binding protein, ABCA1, 14-3-3ε