Volume 32, Issue 1 (April 2021)
Studies in Medical Sciences 2021, 32(1): 1-13 |
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Department of Physical Education and Sport Sciences, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran (Corresponding Author) , f_taghian@yahoo.com
Abstract: (2482 Views)
Background & Aims: Exercise can also be effective in rehabilitating myocardial infarction by strengthening myocardial muscle tissue. This study aimed to evaluate the effect of aerobic exercise alone, and along with the consumption of chitosan encapsulated ginger extract on the histopathological characteristics of cardiac tissue and the level of MAPK expression in rats with myocardial infarction.
Materials & Methods: In this experimental study, 25 Wistar male rats were randomly divided into 5 groups (n = 5): myocardial infarction (Model), myocardial infarction + nanoparticle capsule extract + exercise, myocardial infarction + nanoparticle encapsulated extract, myocardial infarction + nanoparticle, myocardial infarction + exercise. Myocardial infarction was induced by subcutaneous injection. The main training program was for six weeks; thus, in the first week, the speed started at 10 meters per minute, and the time was 10 minutes, and by the sixth week, the speed reached 15 meters per minute, and the time reached 60 minutes. Ginger extract encapsulated in chitosan nanoparticles was gavaged at 500 mg/kg for six weeks. Finally, rats were anesthetized, and heart tissue was collected for MAPK gene expression using Real-Time PCR and histopathological studies (hematoxylin and eosin staining).
Results: The rat model of myocardial infarction in the groups trained and treated with the extract encapsulated in chitosan nanoparticles showed a significant decrease in MAPK gene expression compared to the model group (p<0.05). The chitosan encapsulated ginger extract, either alone or with continuous exercise, caused the heart tissue's cohesive muscle fibers to be placed next to each other or significantly reduced the amount of bleeding and infiltration of inflammatory cells compared to the model group (p<0.001).
Conclusion: Six weeks of aerobic exercise and consumption of encapsulated ginger extract in nanoparticles can reduce isopropanol-induced heart tissue damage by improving cardiac homeostasis and reducing MAPK.
Materials & Methods: In this experimental study, 25 Wistar male rats were randomly divided into 5 groups (n = 5): myocardial infarction (Model), myocardial infarction + nanoparticle capsule extract + exercise, myocardial infarction + nanoparticle encapsulated extract, myocardial infarction + nanoparticle, myocardial infarction + exercise. Myocardial infarction was induced by subcutaneous injection. The main training program was for six weeks; thus, in the first week, the speed started at 10 meters per minute, and the time was 10 minutes, and by the sixth week, the speed reached 15 meters per minute, and the time reached 60 minutes. Ginger extract encapsulated in chitosan nanoparticles was gavaged at 500 mg/kg for six weeks. Finally, rats were anesthetized, and heart tissue was collected for MAPK gene expression using Real-Time PCR and histopathological studies (hematoxylin and eosin staining).
Results: The rat model of myocardial infarction in the groups trained and treated with the extract encapsulated in chitosan nanoparticles showed a significant decrease in MAPK gene expression compared to the model group (p<0.05). The chitosan encapsulated ginger extract, either alone or with continuous exercise, caused the heart tissue's cohesive muscle fibers to be placed next to each other or significantly reduced the amount of bleeding and infiltration of inflammatory cells compared to the model group (p<0.001).
Conclusion: Six weeks of aerobic exercise and consumption of encapsulated ginger extract in nanoparticles can reduce isopropanol-induced heart tissue damage by improving cardiac homeostasis and reducing MAPK.
Type of Study: Research |
Subject:
Exercise physiology
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