PMID- 17314328 OWN - NLM STAT- MEDLINE DCOM- 20070531 LR - 20220129 IS - 1046-6673 (Print) IS - 1046-6673 (Linking) VI - 18 IP - 4 DP - 2007 Apr TI - Inhibition of p38 mitogen-activated protein kinase is effective in the treatment of experimental crescentic glomerulonephritis and suppresses monocyte chemoattractant protein-1 but not IL-1beta or IL-6. PG - 1167-79 AB - Activation of p38 mitogen-activated protein kinase (MAPK) is known to be important in cytokine production and cell survival in inflammation. This study examined the effect of inhibiting p38 MAPK after onset of renal injury in an experimental model of crescentic glomerulonephritis. Furthermore, this study investigated whether p38 MAPK inhibition would cause widespread suppression of the cytokine network in vivo or uncontrolled apoptosis. In the in vivo studies, daily treatment with a p38 MAPKalpha/beta inhibitor was started 1 h (early treatment study) or 4 d (late treatment study) after induction of nephrotoxic nephritis in Wistar Kyoto rats. The treated rats remained healthy with normal weight gain during the study. Both early and late treatment with p38 MAPK inhibitor reduced renal monocyte chemoattractant protein-1 (MCP-1) levels, the number of glomerular macrophages, the severity of tissue injury, and proteinuria compared with the vehicle group. Unexpected, treatment with p38 MAPK inhibitor did not suppress renal levels of IL-1beta or IL-6. In the in vitro study, the p38 MAPKalpha/beta inhibitor reduced production of MCP-1 and IL-6 by TNF-alpha-or IL-1beta-stimulated mesangial cells without any effect on cell viability or apoptosis. In conclusion, p38 MAPK inhibition is effective in reducing the severity of crescentic glomerulonephritis even when treatment is started after onset of disease. The therapeutic effect is associated with selective suppression of MCP-1, without widespread suppression of cytokine production or increased apoptosis. Therefore, p38 MAPK therapeutic blockade is a promising strategy in the treatment of antibody-mediated glomerulonephritis. FAU - Sheryanna, Abdulmunem AU - Sheryanna A AD - Renal Section, Division of Medicine, Imperial College London, Hammersmith Hospital Campus, Du Cane Road, London W12 ONN, UK. FAU - Bhangal, Gurjeet AU - Bhangal G FAU - McDaid, John AU - McDaid J FAU - Smith, Jennifer AU - Smith J FAU - Manning, Anthony AU - Manning A FAU - Foxwell, Brian M J AU - Foxwell BM FAU - Feldmann, Marc AU - Feldmann M FAU - Cook, H Terence AU - Cook HT FAU - Pusey, Charles D AU - Pusey CD FAU - Tam, Frederick W K AU - Tam FW LA - eng GR - G0400443/MRC_/Medical Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070221 PL - United States TA - J Am Soc Nephrol JT - Journal of the American Society of Nephrology : JASN JID - 9013836 RN - 0 (Chemokine CCL2) RN - 0 (Interleukin-1beta) RN - 0 (Interleukin-6) RN - 0 (Protein Kinase Inhibitors) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) SB - IM MH - Animals MH - Chemokine CCL2/analysis/*antagonists & inhibitors MH - Glomerulonephritis/*drug therapy/immunology/pathology MH - Intercellular Adhesion Molecule-1/analysis MH - Interleukin-1beta/analysis/*antagonists & inhibitors MH - Interleukin-6/analysis/*antagonists & inhibitors MH - Male MH - Protein Kinase Inhibitors/*therapeutic use MH - Rats MH - Rats, Inbred WKY MH - p38 Mitogen-Activated Protein Kinases/*antagonists & inhibitors EDAT- 2007/02/23 09:00 MHDA- 2007/06/01 09:00 CRDT- 2007/02/23 09:00 PHST- 2007/02/23 09:00 [pubmed] PHST- 2007/06/01 09:00 [medline] PHST- 2007/02/23 09:00 [entrez] AID - ASN.2006010050 [pii] AID - 10.1681/ASN.2006010050 [doi] PST - ppublish SO - J Am Soc Nephrol. 2007 Apr;18(4):1167-79. doi: 10.1681/ASN.2006010050. Epub 2007 Feb 21.