PMID- 29848510 OWN - NLM STAT- MEDLINE DCOM- 20190701 LR - 20220716 IS - 1470-8736 (Electronic) IS - 0143-5221 (Print) IS - 0143-5221 (Linking) VI - 132 IP - 12 DP - 2018 Jun 29 TI - Prorenin independently causes hypertension and renal and cardiac fibrosis in cyp1a1-prorenin transgenic rats. PG - 1345-1363 LID - 10.1042/CS20171659 [doi] AB - Plasma prorenin is commonly elevated in diabetic patients and appears to predict the development of diabetic nephropathy. However, the pathological role of prorenin is unclear. In the present study, a transgenic, inducible, hepatic prorenin-overexpressing rat model was generated and the effect of prorenin in organ injury was examined. Four groups of rats (cyp1a1 prorenin transgenic male and female rats and non-transgenic littermates) were assigned to receive a diet containing 0.3% of the transgene inducer indole-3-carbinol (I3C) for 4 weeks. Plasma prorenin concentration was increased and mean arterial pressure (MAP) increased from 80 +/- 18 to 138 +/- 17 (mmHg), whereas renal prorenin/renin protein expression was unchanged, in transgenic rats fed with I3C diet. The intact prorenin, not renin, in plasma and urine samples was further observed by Western blot analysis. Importantly, transgenic rats with high levels of prorenin developed albuminuria, glomerular and tubulointerstitial fibrosis associated with increased expression of transforming growth factor beta (TGFbeta) 1 (TGFbeta1), plasminogen activator inhibitor-1 (PAI-1), collagen, and fibronectin (FN). These rats also exhibited cardiac hypertrophy determined by echocardiography, with elevated ratio of heart weight to body weight (HW/BW). Cardiac collagen in interstitial and perivascular regions was prominent, accompanied by the increase in mRNA contents of atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP), beta-myosin heavy chain (beta-MHC), TGFbeta1, PAI-1, and collagen in the heart tissue. Furthermore, renal protein levels of p-NF-kappaB-p65 and monocyte chemoattractant protein-1 (MCP-1), NAPDH oxidases, malondialdehyde (MDA) and 8-isoprostane (8-IP), p-ERK, p-beta-catenin, and p-Akt were dramatically increased in prorenin overexpressing rats. These results indicate that prorenin, without being converted into renin, causes hypertension, renal and cardiac fibrosis via the induction of inflammation, oxidative stress and the ERK, beta-catenin, and Akt-mediated signals. CI - (c) 2018 The Author(s). FAU - Zhou, Guangyu AU - Zhou G AD - Division of Nephrology, Department of Internal Medicine, University of Utah Health, Salt Lake City, UT 84112, U.S.A. AD - Division of Nephrology, Department of Internal Medicine, Shengjing Hospital, China Medical University, Shenyang 110004, China. FAU - Wu, Jie AU - Wu J AD - Division of Nephrology, Department of Internal Medicine, University of Utah Health, Salt Lake City, UT 84112, U.S.A. FAU - Gu, Chunyan AU - Gu C AD - Division of Nephrology, Department of Internal Medicine, University of Utah Health, Salt Lake City, UT 84112, U.S.A. FAU - Wang, Bin AU - Wang B AD - Division of Nephrology, Department of Internal Medicine, University of Utah Health, Salt Lake City, UT 84112, U.S.A. FAU - Abel, E Dale AU - Abel ED AD - Division of Endocrinology, Metabolism and Diabetes, Department of Internal Medicine, University of Utah Health, Salt Lake City, UT 84112, U.S.A. AD - Fraternal Order of Eagles Diabetes Research Center and Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, U.S.A. FAU - Cheung, Alfred K AU - Cheung AK AD - Division of Nephrology, Department of Internal Medicine, University of Utah Health, Salt Lake City, UT 84112, U.S.A. FAU - Huang, Yufeng AU - Huang Y AD - Division of Nephrology, Department of Internal Medicine, University of Utah Health, Salt Lake City, UT 84112, U.S.A. yufeng.huang@hsc.utah.edu. AD - Department of Pathophysiology, University of Nantong College of Medicine, Nantong Shi, Jiangsu 226000, China. LA - eng GR - K01 DK077955/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180628 PL - England TA - Clin Sci (Lond) JT - Clinical science (London, England : 1979) JID - 7905731 RN - EC 3.4.23.15 (Renin) SB - IM MH - Albuminuria/blood/physiopathology MH - Animals MH - Cardiomegaly/diagnostic imaging/physiopathology MH - Echocardiography MH - Female MH - Fibrosis MH - Gene Expression MH - Hypertension/blood/*physiopathology MH - Kidney/*pathology MH - Male MH - Myocardium/metabolism/*pathology MH - Organ Size MH - Oxidative Stress/physiology MH - Rats, Transgenic MH - Renin/blood/genetics/*physiology MH - Signal Transduction/physiology PMC - PMC6024026 OTO - NOTNLM OT - Prorenin OT - cardiac disease OT - hypertension OT - renal disease OT - renin COIS- The authors declare that there are no competing interests associated with the manuscript. EDAT- 2018/06/01 06:00 MHDA- 2019/07/02 06:00 PMCR- 2018/06/28 CRDT- 2018/06/01 06:00 PHST- 2018/01/03 00:00 [received] PHST- 2018/05/10 00:00 [revised] PHST- 2018/05/25 00:00 [accepted] PHST- 2018/06/01 06:00 [pubmed] PHST- 2019/07/02 06:00 [medline] PHST- 2018/06/01 06:00 [entrez] PHST- 2018/06/28 00:00 [pmc-release] AID - CS20171659 [pii] AID - 10.1042/CS20171659 [doi] PST - epublish SO - Clin Sci (Lond). 2018 Jun 28;132(12):1345-1363. doi: 10.1042/CS20171659. Print 2018 Jun 29.