Regulation of Peroxisome Proliferator-activated Receptor-γ-mediated Gene Expression

Gene Expression Profile of Adipocyte Differentiation and Its Regulation by Peroxisome Proliferator-Activated Receptor-γ Agonists.

PPAR gamma is an adipocyte-specific nuclear hormone receptor. Agonists of PPAR gamma, such as thiazolidinediones (TZDs), promote adipocyte differentiation and have insulin-sensitizing effects in animals and diabetic patients. Affymetrix oligonucleotide arrays representing 6347 genes were employed to profile the gene expression responses of mature 3T3-L1 adipocytes and differentiating preadipocy...

Egr-1 contributes to IL-1-mediated down-regulation of peroxisome proliferator-activated receptor γ expression in human osteoarthritic chondrocytes

INTRODUCTION Peroxisome proliferator-activated receptor (PPAR)γ has been shown to exhibit anti-inflammatory and anti-catabolic properties and to be protective in animal models of osteoarthritis (OA). We have previously shown that interleukin-1β (IL-1) down-regulates PPARγ expression in human OA chondrocytes. However, the mechanisms underlying this effect have not been well characterized. The PP...

Effect of peroxisome proliferator-activated receptor γ on inflammatory markers

Introduction In a recent study published in “ARYA atherosclerosis,” Pourmoghaddas et al. reported that administration of pioglitzone in non-diabetic patients with metabolic syndrome had no positive effect on inflammatory markers including high sensitive C-reactive protein, interleukin-10 (IL-10), and tumor necrosis factor-α (TNF-α).1 Peroxisome proliferator-activated receptors (PPARs) are ligan...

Role of Peroxisome Proliferator-Activated Receptor-γ in Vascular Inflammation

Vascular inflammation plays a crucial role in atherosclerosis, and its regulation is important to prevent cerebrovascular and coronary artery disease. The inflammatory process in atherogenesis involves a variety of immune cells including monocytes/macrophages, lymphocytes, dendritic cells, and neutrophils, which all express peroxisome proliferator-activated receptor-γ (PPAR-γ). PPAR-γ is a nucl...

Peroxisome Proliferator-Activated Receptor