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GSK3 AND troglitazone

Kye-Im Jeon, Richard P Phipps, Patricia J Sime, Krystel R Huxlin
Wound healing after corneal injury typically involves fibrosis, with transforming growth factor β1 (TGF-β1) as one of its strongest mediators. A class of small molecules-peroxisome proliferator-activated receptor γ (PPARγ) ligands-exert potent antifibrotic effects in the cornea by blocking phosphorylation of p38 mitogen-activated protein kinase (MAPK). However, why this blocks fibrosis remains unknown. Herein, we show that PPARγ ligands (rosiglitazone, troglitazone, and 15-deoxy-Δ12,14-prostaglandin J2) decrease levels of β-catenin...
August 2017: American Journal of Pathology
Lei Zhou, Henrike Sell, Kristin Eckardt, Zaiqing Yang, Jürgen Eckel
Adipocyte-derived factors might play a role in the development of hepatic insulin resistance. Resistin was identified as an adipokine linking obesity and insulin resistance. Resistin is secreted from adipocytes in rodents but in humans it was proposed to originate from macrophages and its impact for insulin resistance has remained elusive. To analyze the role of adipokines in general and resistin as a special adipokine, we cultured the human liver cell line HepG2 with adipocyte-conditioned medium (CM) containing various adipokines such as IL-6 and MCP-1, and resistin...
September 4, 2007: FEBS Letters
Bae-Hang Park, Li Qiang, Stephen R Farmer
Stimulation of adipogenesis in mouse preadipocytes requires C/EBPbeta as well as activation of the MEK/extracellular signal-regulated kinase (ERK) signaling pathway. In this study, we demonstrate that phosphorylation of C/EBPbeta at a consensus ERK/glycogen synthase kinase 3 (GSK3) site regulates adiponectin gene expression during the C/EBPbeta-facilitated differentiation of mouse fibroblasts into adipocytes. First, we show that exposure of 3T3-L1 preadipocytes to insulin, dexamethasone (DEX), and isobutylmethylxanthine (MIX) leads to the phosphorylation of C/EBPbeta at threonine 188...
October 2004: Molecular and Cellular Biology
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