PMID- 10074479 OWN - NLM STAT- MEDLINE DCOM- 19990331 LR - 20181113 IS - 0021-9738 (Print) IS - 0021-9738 (Linking) VI - 103 IP - 5 DP - 1999 Mar TI - Angiotensin II plays a pathogenic role in immune-mediated renal injury in mice. PG - 627-35 AB - Several lines of evidence show the importance of angiotensin II (AII) in renal injuries, especially when hemodynamic abnormalities are involved. To elucidate the role of AII in immune-mediated renal injury, we studied anti-glomerular basement membrane (GBM) nephritis in AII type 1a receptor (AT1a)-deficient homozygous (AT1a-/-) and wild-type (AT1a+/+) mice. A transient activation of the renin-angiotensin system (RAS) was observed in both groups of mice at around day 1. A renal expression of monocyte chemoattractant protein-1 (MCP-1) was transiently induced at six hours in both groups, which was then downregulated at day 1. In the AT1a+/+ mice, after RAS activation, the glomerular expression of MCP-1 was exacerbated at days 7 and 14. Thereafter, severe proteinuria developed, and the renal expressions of transforming growth factor-beta1 (TGF-beta1) and collagen type I increased, resulting in severe glomerulosclerosis and interstitial fibrosis. In contrast, glomerular expression of MCP-1, proteinuria, and tissue damage were markedly ameliorated in the AT1a-/- mice. Because this amelioration is likely due to the lack of AT1a, we can conclude that AII action, mediated by AT1a, plays a pathogenic role in anti-GBM nephritis, in which AII may contribute to the exacerbation of glomerular MCP-1 expression. These results suggest the involvement of AII in immune-mediated renal injuries. FAU - Hisada, Y AU - Hisada Y AD - Discovery Research Laboratory, Tanabe seiyaku Co., Ltd., Kashima, Osaka 532-8505, Japan. FAU - Sugaya, T AU - Sugaya T FAU - Yamanouchi, M AU - Yamanouchi M FAU - Uchida, H AU - Uchida H FAU - Fujimura, H AU - Fujimura H FAU - Sakurai, H AU - Sakurai H FAU - Fukamizu, A AU - Fukamizu A FAU - Murakami, K AU - Murakami K LA - eng PT - Journal Article PL - United States TA - J Clin Invest JT - The Journal of clinical investigation JID - 7802877 RN - 0 (Chemokine CCL2) RN - 0 (Receptors, Angiotensin) RN - 0 (Transforming Growth Factor beta) RN - 11128-99-7 (Angiotensin II) RN - 9007-34-5 (Collagen) SB - IM MH - Angiotensin II/*immunology MH - Animals MH - Anti-Glomerular Basement Membrane Disease/*genetics/*immunology MH - Chemokine CCL2/immunology MH - Collagen/immunology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Receptors, Angiotensin/*genetics/*immunology MH - Renin-Angiotensin System/*immunology MH - Transforming Growth Factor beta/immunology PMC - PMC408115 EDAT- 1999/03/13 00:00 MHDA- 1999/03/13 00:01 PMCR- 1999/03/01 CRDT- 1999/03/13 00:00 PHST- 1999/03/13 00:00 [pubmed] PHST- 1999/03/13 00:01 [medline] PHST- 1999/03/13 00:00 [entrez] PHST- 1999/03/01 00:00 [pmc-release] AID - 02454 [pii] AID - 10.1172/JCI2454 [doi] PST - ppublish SO - J Clin Invest. 1999 Mar;103(5):627-35. doi: 10.1172/JCI2454.