1
|
Sellers HG, Padgett CA, Mintz JD, Speese AC, Brown ZL, Haigh S, Sword J, Rosewater CL, Shivers MA, Barris CT, Kirov SA, Weintraub NL, Belin de Chantemele EJ, Stepp DW, Fulton DJR. Early Endothelial Dysfunction in a Novel Model of Sustained Hyperphagia and Obesity in Mice Using a Brain Targeting Adeno-Associated Virus. Arterioscler Thromb Vasc Biol 2023; 43:1592-1594. [PMID: 37226731 PMCID: PMC10712935 DOI: 10.1161/atvbaha.122.318658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Hunter G Sellers
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | - Caleb A Padgett
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | - James D Mintz
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | - Andrew C Speese
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | - Zachary L Brown
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | - Stephen Haigh
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | - Jeremy Sword
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | - Cody L Rosewater
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | - Mitchell A Shivers
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | - Candee T Barris
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | - Sergei A Kirov
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | - Neal L Weintraub
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | | | - David W Stepp
- Vascular Biology Center, Medical College of Georgia at Augusta University
| | - David J R Fulton
- Vascular Biology Center, Medical College of Georgia at Augusta University
| |
Collapse
|
2
|
Abstract
Several clinical and large population studies indicate that women are more salt-sensitive than men, yet the precise mechanisms by which the sexually dimorphic onset manifests remains incompletely understood. Here, we evaluate recent epidemiological data and highlight current knowledge from studies investigating sex-specific mechanisms of salt-sensitive blood pressure (SSBP). Emerging evidence indicates that women of all ethnicities are more salt-sensitive than men, at all ages both premenopausal and postmenopausal. However, menopause exacerbates severity and prevalence of SSBP, suggesting that female sex chromosomes predispose to and female sex hormones mitigate SSBP. Results from both human and rodent studies support the contribution of enhanced and inappropriate activation of the aldosterone-ECMR (endothelial cell mineralocorticoid receptor) axis promoting vascular dysfunction in females. Increases in adrenal response to angiotensin II, in association with higher ECMR expression and activation of endothelial ENaC (epithelial sodium channel) in females compared to males, are emerging as central players in the development of endothelial dysfunction and SSBP in females. Female sex increases the prevalence and susceptibility of SSBP and sex hormones and sex chromosome complement may exert antagonistic effects in the development of the female heightened SSBP.
Collapse
Affiliation(s)
- Candee T. Barris
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Jessica L. Faulkner
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
- Physiology Department, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Eric J. Belin de Chantemèle
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
- Department of Medicine (Cardiology), Medical College of Georgia at Augusta University, Augusta, GA, USA
| |
Collapse
|
3
|
Warthi G, Faulkner JL, Doja J, Ghanam AR, Gao P, Yang AC, Slivano OJ, Barris CT, Kress TC, Zawieja SD, Griffin SH, Xie X, Ashworth A, Christie CK, Bryant WB, Kumar A, Davis MJ, Long X, Gan L, de Chantemèle EJB, Lyu Q, Miano JM. Generation and Comparative Analysis of an Itga8-CreER T2 Mouse with Preferential Activity in Vascular Smooth Muscle Cells. Nat Cardiovasc Res 2022; 1:1084-1100. [PMID: 36424917 PMCID: PMC9681021 DOI: 10.1038/s44161-022-00162-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 09/29/2022] [Indexed: 11/12/2022]
Abstract
All current smooth muscle cell (SMC) Cre mice similarly recombine floxed alleles in vascular and visceral SMCs. Here, we present an Itga8-CreER T2 knock-in mouse and compare its activity with a Myh11-CreER T2 mouse. Both Cre drivers demonstrate equivalent recombination in vascular SMCs. However, Myh11-CreER T2 mice, but not Itga8-CreER T2 mice, display high activity in visceral SMC-containing tissues such as intestine, show early tamoxifen-independent activity, and produce high levels of CreERT2 protein. Whereas Myh11-CreER T2 -mediated knockout of serum response factor (Srf) causes a lethal intestinal phenotype precluding analysis of the vasculature, loss of Srf with Itga8-CreER T2 (Srf Itga8 ) yields viable mice with no evidence of intestinal pathology. Male and female Srf Itga8 mice exhibit vascular contractile incompetence, and angiotensin II causes elevated blood pressure in wild type, but not Srf Itga8 , male mice. These findings establish the Itga8-CreER T2 mouse as an alternative to existing SMC Cre mice for unfettered phenotyping of vascular SMCs following selective gene loss.
Collapse
Affiliation(s)
- Ganesh Warthi
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Jessica L. Faulkner
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Jaser Doja
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Amr R. Ghanam
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Pan Gao
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Allison C. Yang
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Orazio J. Slivano
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Candee T. Barris
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Taylor C. Kress
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Scott D. Zawieja
- Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, MO 65212
| | - Susan H. Griffin
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Xiaoling Xie
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Alan Ashworth
- Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA, 94158
| | - Christine K. Christie
- Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, Rochester, New York 14642
| | - William B. Bryant
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Ajay Kumar
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Michael J. Davis
- Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, MO 65212
| | - Xiaochun Long
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | - Lin Gan
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| | | | - Qing Lyu
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
- Biomedical and Health Institute, Chongqing Institute of Green and Intelligence Technology, Chongqing, China 400714
- Chongqing General Hospital, Chongqing, China 401147
| | - Joseph M. Miano
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia 30912
| |
Collapse
|
4
|
Barris CT, Kress TC, Ogun‐Semore K, Faulkner JL, Saeed MI, Belin de Chantemèle EJ. Loss of Female Sex Hormones Does Not Further Elevate Blood Pressure in Obese Female Mice but Preserves the Contribution of Leptin to Hypertension. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.r3468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Candee T. Barris
- Vascular Biology CenterVascular Biology Center, Medical College of Georgia at Augusta UniversityAugustaGA
| | - Taylor C. Kress
- Vascular Biology CenterVascular Biology Center, Medical College of Georgia at Augusta UniversityAugustaGA
| | - Kikelomo Ogun‐Semore
- Vascular Biology CenterVascular Biology Center, Medical College of Georgia at Augusta UniversityAugustaGA
| | - Jessica L. Faulkner
- Vascular Biology CenterVascular Biology Center, Medical College of Georgia at Augusta UniversityAugustaGA
| | - Muhammad I. Saeed
- Vascular Biology CenterVascular Biology Center, Medical College of Georgia at Augusta UniversityAugustaGA
| | | |
Collapse
|