Arq. Bras. Cardiol. 2022; 118(2): 435-445
Pterostilbene Reduces Experimental Myocardial Infarction-Induced Oxidative Stress in Lung and Right Ventricle
Silvio Tasca
, Cristina Campos
, Denise Lacerda, Vanessa D. Ortiz, Patrick Turck, Sara E. Bianchi, Alexandre L. de Castro, Adriane Belló-Klein, Valquiria Bassani, Alex Sander da Rosa Araújo
This Original Article is referred by the Short Editorial "Pterostilbene after Acute Myocardial Infarction: Effect on Heart and Lung Tissues".
Abstract
Background
Pterostilbene (PS), a natural and antioxidant polyphenolic compound emerges as a promising intervention in improving the myocardial infarction (MI) damages.
Objetives
This study aimed to evaluate PS actions in promoting redox homeostasis in lungs and right ventricle (RV) of infarcted animals.
Methods
Male Wistar rats (60 day-old) were randomized into three groups: SHAM, MI (infarcted), and MI+PS (MI+pterostilbene). Seven days after MI procedure, rats were treated with PS (100 mg/kg/day) via gavage for eight days. Animals were euthanized and the lungs and RV were harvested for analyses of redox balance (Differences were considered significant when p<0.05).
Results
Our results show that MI triggers a redox disruption scenario in RV and lungs, which can contribute to MI-induced damage on these organs. Consistently, PS mitigated oxidative stress and restored antioxidant defenses (GSH in lungs: SHAM= 0.79±0.07; MI=0.67±0.05; MI+PS=0.86±0.14; p<0.05), indicating its protective role in this scenario.
Conclusions
Our work evidences the PS potential use as an adjuvant therapeutic approach after MI focusing on protecting pulmonary and right-sided heart tissues.
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