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Type: Artigo
Title: Unraveling The Role Of High-intensity Resistance Training On Left Ventricle Proteome: Is There A Shift Towards Maladaptation?
Author: Dantas
Patricia Sousa; Sakata
Maisa Mayumi; Perez
Juliana Dineia; Harumi Watanabe
Regina Lucia; Bizerra
Fernando Cesar; das Neves
Vander Jose; Guzzoni
Vinicius; Marcondes
Fernanda Klein; Casarini
Dulce Elena; Cunha
Tatiana Sousa
Abstract: High-intensity resistance training (RT) induces adaptations that improve physiological function. However, high intensity, volume and/or frequency may lead to injury and other health issues such as adverse cardiac effects. The aim of this study was to evaluate the effect of RT on left ventricle proteome, and to identify the pathways involved on the harmful adaptations induced by this protocol. Male Wistar rats were randomized into 2 groups: Trained (T) and Sedentary (S). Animals from T group were trained for 6 weeks, and then all the animals were sacrificed and left ventricle was isolated for analysis. We identified 955 proteins, and 93 proteins were considered; 36 were expressed exclusively in T group, and 4 in S group. Based on quantitative analysis, 42 proteins were found overexpressed and 11 underexpressed in T group compared with S group. Using the Gene Ontology to relate the biological processes in which these proteins are involved, we conclude that RT protocol promotes changes similar to those found in the initial phase of heart failure, but we also observed a concomitant increased expression of protective proteins, suggesting the activation of pathways to avoid major damages on left ventricle and delay the onset of pathological hypertrophy. Statement of significance of the study: Our study shows that high-intensity RT protocol changes left ventricle proteome, modifying metabolic profile of heart tissue and inducing the expression of proteins that acts against cardiac injury. We hypothesize that these adaptations occur to prevent the onset of cardiac dysfunction. Despite highly significant, it remains to be determined whether these adaptations are sufficient to further keep left ventricle function and exert cardioprotection, and whether this panel will be shifted towards maladaptation, and heart failure. (c) 2016 Elsevier Inc. All rights reserved.
Subject: Proteomics Shotgun
Rat Proteomics
High-intensity Resistance Training
Cardiac Hypertrophy
Pathological Hypertrophy
Editor: Pergamon-Elsevier Science LTD
Citation: Life Sciences. Pergamon-elsevier Science Ltd , v. 152, p. 156 - 164, 2016.
Rights: fechado
Identifier DOI: 10.1016/j.lfs.2016.03.040
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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