PMID- 19460355 OWN - NLM STAT- MEDLINE DCOM- 20090626 LR - 20171116 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 385 IP - 2 DP - 2009 Jul 24 TI - Nifedipine, a calcium channel blocker, inhibits advanced glycation end product (AGE)-elicited mesangial cell damage by suppressing AGE receptor (RAGE) expression via peroxisome proliferator-activated receptor-gamma activation. PG - 269-72 LID - 10.1016/j.bbrc.2009.05.061 [doi] AB - The interaction between advanced glycation end products (AGE) and their receptor RAGE mediates the progressive alteration in renal architecture and loss of renal function in diabetic nephropathy. Oxidative stress generation and inflammation also play a central role in diabetic nephropathy. This study investigated whether and how nifedipine, a calcium channel blocker (CCB), blocked the AGE-elicited mesangial cell damage in vitro. Nifedipine, but not amlodipine, a control CCB, down-regulated RAGE mRNA levels and subsequently reduced reactive oxygen species (ROS) generation in AGE-exposed mesangial cells. AGE increased mRNA levels of vascular cell adhesion molecule-1 (VCAM-1) and induced monocyte chemoattractant protein-1 (MCP-1) production in mesangial cells, both of which were prevented by the treatment with nifedipine, but not amlodipine. The beneficial effects of nifedipine on AGE-exposed mesangial cells were blocked by the simultaneous treatment of GW9662, an inhibitor of peroxisome proliferator-activated receptor-gamma (PPAR-gamma). Although nifedipine did not affect expression levels of PPAR-gamma, it increased the PPAR-gamma transcriptional activity in mesangial cells. Our present study provides a unique beneficial aspect of nifedipine on diabetic nephropathy; it could work as an anti-inflammatory agent against AGE by suppressing RAGE expression in cultured mesangial cells via PPAR-gamma activation. FAU - Matsui, Takanori AU - Matsui T AD - Department of Pathophysiology and Therapeutics of Diabetic Vascular Complications, Kurume University School of Medicine, Kurume, Japan. FAU - Yamagishi, Sho-ichi AU - Yamagishi S FAU - Takeuchi, Masayoshi AU - Takeuchi M FAU - Ueda, Seiji AU - Ueda S FAU - Fukami, Kei AU - Fukami K FAU - Okuda, Seiya AU - Okuda S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090519 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (2-chloro-5-nitrobenzanilide) RN - 0 (Anilides) RN - 0 (CCL2 protein, human) RN - 0 (Calcium Channel Blockers) RN - 0 (Chemokine CCL2) RN - 0 (Glycation End Products, Advanced) RN - 0 (PPAR gamma) RN - 0 (Reactive Oxygen Species) RN - 0 (Receptor for Advanced Glycation End Products) RN - 0 (Receptors, Immunologic) RN - I9ZF7L6G2L (Nifedipine) SB - IM MH - Anilides/pharmacology MH - Calcium Channel Blockers/*pharmacology MH - Chemokine CCL2/biosynthesis MH - *Cytoprotection MH - Glycation End Products, Advanced/*metabolism MH - Humans MH - Mesangial Cells/*drug effects/metabolism MH - Nifedipine/*pharmacology MH - PPAR gamma/*agonists MH - Reactive Oxygen Species/metabolism MH - Receptor for Advanced Glycation End Products MH - Receptors, Immunologic/*antagonists & inhibitors MH - Transcription, Genetic EDAT- 2009/05/23 09:00 MHDA- 2009/06/27 09:00 CRDT- 2009/05/23 09:00 PHST- 2009/04/29 00:00 [received] PHST- 2009/05/14 00:00 [accepted] PHST- 2009/05/23 09:00 [entrez] PHST- 2009/05/23 09:00 [pubmed] PHST- 2009/06/27 09:00 [medline] AID - S0006-291X(09)01002-X [pii] AID - 10.1016/j.bbrc.2009.05.061 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2009 Jul 24;385(2):269-72. doi: 10.1016/j.bbrc.2009.05.061. Epub 2009 May 19.