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The effect of interval training and omega-3 on endoplasmic reticulum stress in the liver tissue of nonalcoholic fatty liver disease (NAFLD) rats
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Mostafa Kazemi1    , Ahmad Abdi 2, Alireaz Barari3 , Javad Mehrabani4 |
1- PhD Candidate, Department of Exercise Physiology, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
2- Department of Sport Physiology, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran , a.abdi58@gmail.com
3- Department of Sport Physiology, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
4- Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Guilan, Rasht, Iran |
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Abstract: (129 Views) |
Background: Endoplasmic reticulum stress (ERS) plays an important role in the development of non-alcoholic fatty liver disease (NAFLD). In this study, the effect of omega-3 consumption and interval exercise alone or in combination on ERS in rats with NAFLD was investigated.
Materials and methods: In this experimental study, 40 male Wistar rats (mean weight 156.98±7.82) were divided into 5 groups: Control-Normal (CN), NAFLD, NAFLD-Training (TRNAF), NAFLD-Supplement (SUPNAF) and NAFLD-Training-Supplement (TRSUPNAF). The supplement groups received 1 g of Omega3 (per kg of body weight) orally during the intervention period. Interval training program including running on treadmill with a speed of 14-28 meters per minute, was performed 5 days a week for eight weeks.
Results: Induction of NAFLD increased GRP78, CHOP, ALT and AST (p=0.0001). The expression of GRP78 and CHOP was significantly decreased in TRNAF (p=0.0001 and p=0.001 respectively) and SUPNAF (p=0.0001 and p=0.001 respectively) groups compared to NAFLD. ALT and AST also significantly decreased in TRNAF (p=0.0001 and p=0.0001) and SUPNAF (p=0.0001 and p=0.001 respectively) groups. The combined intervention of interval training with omega-3 supplement was not significant compared to the effect of each intervention alone on GRP78, CHOP, ALT and AST (p<0.05).
Conclusion: Interval training and omega-3 consumption inhibited ER stress in liver tissue through reduction in GRP78 and CHOP expression. However, the simultaneous effect of interval training and omega-3 on ERS needs more research.
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| Keywords: Exercise, Omega-3, GRP78, CHOP, Nonalcoholic fatty liver disease. |
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Full-Text [PDF 402 kb]
(113 Downloads)
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Semi-pilot: Experimental |
Subject:
Nutrition Sciences
Received: 2023/05/15 | Accepted: 2023/09/2 | Published: 2024/02/29
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