PMID- 25143459 OWN - NLM STAT- MEDLINE DCOM- 20150303 LR - 20181202 IS - 1522-1466 (Electronic) IS - 1522-1466 (Linking) VI - 307 IP - 8 DP - 2014 Oct 15 TI - Semicarbazide-sensitive amine oxidase (SSAO) inhibition ameliorates kidney fibrosis in a unilateral ureteral obstruction murine model. PG - F908-16 LID - 10.1152/ajprenal.00698.2013 [doi] AB - Semicarbazide-sensitive amine oxidase (SSAO) is an enzyme known for its dual function in mediating inflammation and reactive oxygen species production. However, the role of SSAO inhibitors in limiting kidney fibrosis is unclear. We aimed to determine the effectiveness of a SSAO inhibitor (SSAOi; PXS4728A) as an antifibrotic agent using a 7-day unilateral ureteric obstruction (UUO) model of acute kidney fibrosis in 6- to 8-wk-old mice. The experimental groups were 1) Sham operated; 2) UUO; 3) UUO+SSAOi (2 mg/kg); 4) UUO+telmisartan, an angiotensin receptor blocker (3 mg/kg); and 5) UUO+SSAOi+telmisartan. Kidney tissue was analyzed for histological evidence of tubulointerstitial fibrosis, nitrotyrosine staining, and mRNA expression of markers associated with fibrosis and inflammation. Kidney SSAO activity was determined by radiometric [(14)C]benzylamine methodology. Our results show that SSAOi effectively suppresses UUO-mediated SSAO activity. Extracellular matrix markers, namely, fibronectin, collagen IV protein, and nitrotyrosine staining, were lower in UUO+SSAOi mice compared with untreated UUO mice. This was consistent with the attenuated mRNA expression of collagen IV and fibronectin. SSAOi effectively inhibited transforming growth factor-beta1 (TGF-beta1) and monocyte chemoattractant protein-1 (MCP-1) expression to a similar extent to that observed with telmisartan. Individually, SSAOi and telmisartan induced a reduction in interstitial leukocyte and macrophage accumulation. However, the combination of SSAOi and telmisartan was more effective at reducing inflammatory cell infiltration. These results demonstrate that SSAO inhibition significantly suppresses profibrotic and proinflammatory cytokine secretion, reduces oxidative stress, and limits inflammatory cell accumulation and extracellular matrix expression in an acute model of renal fibrosis. CI - Copyright (c) 2014 the American Physiological Society. FAU - Wong, May AU - Wong M AD - Kolling Institute of Medical Research, Royal North Shore Hospital, University of Sydney, St. Leonards, Sydney, New South Wales, Australia; FAU - Saad, Sonia AU - Saad S AD - Kolling Institute of Medical Research, Royal North Shore Hospital, University of Sydney, St. Leonards, Sydney, New South Wales, Australia; FAU - Zhang, Jie AU - Zhang J AD - Kolling Institute of Medical Research, Royal North Shore Hospital, University of Sydney, St. Leonards, Sydney, New South Wales, Australia; FAU - Gross, Simon AU - Gross S AD - Kolling Institute of Medical Research, Royal North Shore Hospital, University of Sydney, St. Leonards, Sydney, New South Wales, Australia; FAU - Jarolimek, Wolfgang AU - Jarolimek W AD - Pharmaxis, Limited, Frenchs Forest, Sydney, New South Wales, Australia; and. FAU - Schilter, Heidi AU - Schilter H AD - Pharmaxis, Limited, Frenchs Forest, Sydney, New South Wales, Australia; and. FAU - Chen, Jason A AU - Chen JA AD - Department of Anatomical Pathology, Royal North Shore Hospital, University of Sydney, St. Leonards, Sydney, New South Wales, Australia. FAU - Gill, Anthony J AU - Gill AJ AD - Department of Anatomical Pathology, Royal North Shore Hospital, University of Sydney, St. Leonards, Sydney, New South Wales, Australia. FAU - Pollock, Carol A AU - Pollock CA AD - Kolling Institute of Medical Research, Royal North Shore Hospital, University of Sydney, St. Leonards, Sydney, New South Wales, Australia; carol.pollock@sydney.edu.au. FAU - Wong, Muh Geot AU - Wong MG AD - Kolling Institute of Medical Research, Royal North Shore Hospital, University of Sydney, St. Leonards, Sydney, New South Wales, Australia; LA - eng PT - Journal Article DEP - 20140820 PL - United States TA - Am J Physiol Renal Physiol JT - American journal of physiology. Renal physiology JID - 100901990 RN - 0 (Benzimidazoles) RN - 0 (Benzoates) RN - 0 (Enzyme Inhibitors) RN - 0 (Semicarbazides) RN - 37QUC23K2X (carbamylhydrazine) RN - EC 1.4.3.21 (Amine Oxidase (Copper-Containing)) RN - U5SYW473RQ (Telmisartan) SB - IM MH - Amine Oxidase (Copper-Containing)/*antagonists & inhibitors MH - Animals MH - Benzimidazoles/pharmacology MH - Benzoates/pharmacology MH - Disease Models, Animal MH - Enzyme Inhibitors/pharmacology MH - Fibrosis MH - Kidney/*pathology MH - Kidney Diseases/*drug therapy/enzymology/pathology MH - Mice, Inbred C57BL MH - Semicarbazides/pharmacology MH - Telmisartan MH - Ureteral Obstruction/pathology OTO - NOTNLM OT - anti-inflammatory OT - semicarbazide-sensitive amine oxidase OT - tubulointerstitial fibrosis OT - unilateral ureteral obstruction murine model EDAT- 2014/08/22 06:00 MHDA- 2015/03/04 06:00 CRDT- 2014/08/22 06:00 PHST- 2014/08/22 06:00 [entrez] PHST- 2014/08/22 06:00 [pubmed] PHST- 2015/03/04 06:00 [medline] AID - ajprenal.00698.2013 [pii] AID - 10.1152/ajprenal.00698.2013 [doi] PST - ppublish SO - Am J Physiol Renal Physiol. 2014 Oct 15;307(8):F908-16. doi: 10.1152/ajprenal.00698.2013. Epub 2014 Aug 20.