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Kukida M, Amioka N, Ye D, Chen H, Moorleghen JJ, Liang CL, Howatt DA, Katsumata Y, Yanagita M, Sawada H, Daugherty A, Lu HS. Manipulation of components of the renin angiotensin system in renal proximal tubules fails to alter atherosclerosis in hypercholesterolemic mice. Front Cardiovasc Med 2023; 10:1250234. [PMID: 37655218 PMCID: PMC10466789 DOI: 10.3389/fcvm.2023.1250234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 08/03/2023] [Indexed: 09/02/2023] Open
Abstract
Background and objective Whole body manipulation of the renin-angiotensin system (RAS) consistently exerts profound effects on experimental atherosclerosis development. A deficit in the literature has been a lack of attention to the effects of sex. Also, based on data with gene-deleted mice, the site of RAS activity that influences lesion formation is at an unknown distant location. Since angiotensin (AngII) concentrations are high in kidney and the major components of the RAS are present in renal proximal tubule cells (PTCs), this study evaluated the role of the RAS in PTCs in atherosclerosis development. Methods and results Mice with an LDL receptor -/- background were fed Western diet to induce hypercholesterolemia and atherosclerosis. We first demonstrated the role of AT1 receptor antagonism on atherosclerosis in both sexes. Losartan, an AngII type 1 (AT1) receptor blocker, had greater blood pressure-lowering effects in females than males, but equivalent effects between sexes in reducing atherosclerotic lesion size. To determine the roles of renal AT1a receptor and angiotensin-converting enzyme (ACE), either component was deleted in PTCs after weaning using a tamoxifen-inducible Cre expressed under the control of an Ndrg1 promoter. Despite profound deletion of AT1a receptor or ACE in PTCs, the absence of either protein did not influence development of atherosclerosis in either sex. Conversely, mice expressing human angiotensinogen and renin in PTCs or expressing human angiotensinogen in liver but human renin in PTCs did not change atherosclerotic lesion size in male mice. Conclusion Whole-body AT1R inhibition reduced atherosclerosis equivalently in both male and female mice; however, PTC-specific manipulation of the RAS components had no effects on hypercholesterolemia-induced atherosclerosis.
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Affiliation(s)
- Masayoshi Kukida
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
| | - Naofumi Amioka
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
| | - Dien Ye
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
| | - Hui Chen
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
| | - Jessica J. Moorleghen
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
| | - Ching-Ling Liang
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
| | - Deborah A. Howatt
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
| | - Yuriko Katsumata
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, United States
- Department of Biostatistics, University of Kentucky, Lexington, KY, United States
| | - Motoko Yanagita
- Department of Nephrology, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan
| | - Hisashi Sawada
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
- Saha Aortic Center, University of Kentucky, Lexington, KY, United States
- Department of Physiology, University of Kentucky, Lexington, KY, United States
| | - Alan Daugherty
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
- Saha Aortic Center, University of Kentucky, Lexington, KY, United States
- Department of Physiology, University of Kentucky, Lexington, KY, United States
| | - Hong S. Lu
- Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, United States
- Saha Aortic Center, University of Kentucky, Lexington, KY, United States
- Department of Physiology, University of Kentucky, Lexington, KY, United States
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Joshi B, Wagh G, Kaur H, Patra C. Zebrafish Model to Study Angiotensin II-Mediated Pathophysiology. BIOLOGY 2021; 10:1177. [PMID: 34827169 PMCID: PMC8614710 DOI: 10.3390/biology10111177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 10/31/2021] [Accepted: 11/04/2021] [Indexed: 11/16/2022]
Abstract
Hypertension, a common chronic condition, may damage multiple organs, including the kidney, heart, and brain. Thus, it is essential to understand the pathology upon ectopic activation of the molecular pathways involved in mammalian hypertension to develop strategies to manage hypertension. Animal models play a crucial role in unraveling the disease pathophysiology by allowing incisive experimental procedures impossible in humans. Zebrafish, a small freshwater fish, have emerged as an important model system to study human diseases. The primary effector, Angiotensin II of the RAS pathway, regulates hemodynamic pressure overload mediated cardiovascular pathogenesis in mammals. There are various established mammalian models available to study pathophysiology in Angiotensin II-induced hypertension. Here, we have developed a zebrafish model to study pathogenesis by Angiotensin II. We find that intradermal Angiotensin II injection every 12 h can induce cardiac remodeling in seven days. We show that Angiotensin II injection in adult zebrafish causes cardiomyocyte hypertrophy and enhances cardiac cell proliferation. In addition, Angiotensin II induces ECM protein-coding gene expression and fibrosis in the cardiac ventricles. Thus, this study can conclude that Angiotensin II injection in zebrafish has similar implications as mammals, and zebrafish can be a model to study pathophysiology associated with AngII-RAS signaling.
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Affiliation(s)
- Bhagyashri Joshi
- Developmental Biology, Agharkar Research Institute, Pune 411004, India; (B.J.); (G.W.)
- Science and Technology, SP Pune University, Pune 411007, India
| | - Ganesh Wagh
- Developmental Biology, Agharkar Research Institute, Pune 411004, India; (B.J.); (G.W.)
- Science and Technology, SP Pune University, Pune 411007, India
| | - Harmandeep Kaur
- Keenan Research Centre for Biomedical Science and Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, ON M5C 2T2, Canada;
| | - Chinmoy Patra
- Developmental Biology, Agharkar Research Institute, Pune 411004, India; (B.J.); (G.W.)
- Science and Technology, SP Pune University, Pune 411007, India
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Kukida M, Sawada H, Ohno-Urabe S, Howatt DA, Moorleghen JJ, Poglitsch M, Daugherty A, Lu HS. Effects of Endogenous Angiotensin II on Abdominal Aortic Aneurysms and Atherosclerosis in Angiotensin II-Infused Mice. J Am Heart Assoc 2021; 10:e020467. [PMID: 33890483 PMCID: PMC8200749 DOI: 10.1161/jaha.121.020467] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
| | - Hisashi Sawada
- Saha Cardiovascular Research Center Lexington KY.,Department of Physiology University of Kentucky Lexington KY
| | | | | | | | | | - Alan Daugherty
- Saha Cardiovascular Research Center Lexington KY.,Department of Physiology University of Kentucky Lexington KY
| | - Hong S Lu
- Saha Cardiovascular Research Center Lexington KY.,Department of Physiology University of Kentucky Lexington KY
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