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Evaluation of the influence of perivascular adipose tissue (PVAT) on vascular reactivity of the aorta of infarcted rats submitted to aerobic and resistance training

Grant number: 14/20303-0
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): February 01, 2015
Effective date (End): April 30, 2018
Field of knowledge:Biological Sciences - Physiology
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Luciana Venturini Rossoni
Grantee:Milene Tavares Fontes
Home Institution: Instituto de Ciências Biomédicas (ICB). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Myocardial infarction (MI) is an ischemic disease that induces deficient perfusion of cardiac tissue, resulting in necrosis of the myocardial wall. Despite the reduction in the number of death due to MI, this disease still has a high incidence and many patients have consequences such as low physical capacity. Among alterations found in MI the endothelial dysfunction is present, it is common in cardiovascular disease and is characterized by an imbalance between the release of contractile factors in detriment of endothelium-derived relaxing factors. Besides the endothelium, the literature has shown that perivascular adipose tissue (PVAT) is able to release vasoactive substances that have an anti-contractile effect. In the presence of cardiovascular pathologies the PVAT presents an imbalance of its function. This dysfunction occurs, as well as in the endothelium, by reducing the release of relaxing and/or by increased contractile factors. Among the contractile factors we mention aldosterone, which is released by adipocytes. Aldosterone levels also are increased in patients and animals model of MI, thus demonstrating a possible relationship among PVAT, aldosterone and myocardial infarction. To reverse these losses promoted by MI, various associations related to health have suggested, in its guidelines, the regular practice of physical exercise as a non-pharmacologic tool. Regular exercise improves survival, physical capacity, cardiac contractility, antioxidants and inflammatory parameters, and the ability to interfere with the expression of adipokines. Furthermore, the literature has shown that the combination of aerobic and resistance exercises have been effective in promoting benefits in infarcted patients. Within this context, the current project has the objective to evaluate the influence of PVAT on vascular reactivity of rat aorta after MI, submitted to combined resistance-aerobic training. (AU)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
VICTORIO, JAMAIRA A.; FONTES, MILENE T.; ROSSONI, LUCIANA V.; DAVEL, ANA P. Different Anti-Contractile Function and Nitric Oxide Production of Thoracic and Abdominal Perivascular Adipose Tissues. FRONTIERS IN PHYSIOLOGY, v. 7, JUL 12 2016. Web of Science Citations: 19.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
FONTES, Milene Tavares. Evaluation of the influence of perivascular adipose tissue on the vascular reactivity of the aorta of rats with heart failure submitted to aerobic and resistance training.. 2019. Doctoral Thesis - Universidade de São Paulo (USP). Instituto de Ciências Biomédicas São Paulo.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.