آثار پیشگیرانه دو پروتکل تمرین استقامتی تداومی و تناوبی بر بیان ژن گلکتین- 3 میوکارد در موشهای صحرایی نر ویستار متعاقب القای آنفارکتوس قلبی

نوع مقاله : علمی - پژوهشی

نویسندگان

1 گروه فیزیولوژی ورزشی، دانشکدۀ علوم ورزشی، دانشگاه رازی، کرمانشاه، ایران

2 گروه فیزیولوژی، دانشکده پزشکی، دانشگاه علوم پزشکی لرستان،لرستان، ایران

چکیده

هدف: نشانگرهای زیستی حاوی اطلاعات پیش‌آگهی به‌منظور شناسایی و پیشگیری بیماری‌های قلبی‌اند. گلکتین-3 از محتمل‌ترین واسطه‌گرهای بین فعال‌سازی ماکروفاژها و فیبروز قلب است. این پژوهش به بررسی میزان بیان ژن گلکتین-3 بافت قلب موش‌های صحرایی نر ویستار به‌دنبال یک دوره تمرینات استقامتی تداومی و تناوبی می‌پردازد.
روش‌ها: در این پژوهش در نهایت 32 سر موش صحرایی در شرایط استاندارد نگهداری و به چهار گروه (گروه شاهد سالم، گروه شاهد ایسکمی، گروه تمرین تداومی و گروه تمرین تناوبی) تقسیم شدند. گروه شاهد سالم بدون القای آنفارکتوس و گروه شاهد ایسکمی پس از 8 هفته به آنفارکتوس قلبی مبتلا شدند. گروه‌های تمرینی نیز به مدت 8 هفته به تمرینات استقامتی روی نوار گردان پرداختند و پس از 48 ساعت استراحت به آنفارکتوس قلبی مبتلا شدند. یک هفته پس از القا و اطمینان از ایجاد ایسکمی، قلب موش‌های صحرایی جدا و به‌منظور اندازه‌گیری بیان ژنLGALS3  میوکارد از روش qRT-PCR استفاده شد. از آزمون تی و آزمون آنوا یکطرفه و در ادامه آزمون تعقیبی توکی با سطح معناداری 05/0 به‌منظور مقایسة گروه‌ها استفاده شد.
نتایج: یافته‌های پژوهش حاضر حاکی از افزایش معنادار بیان ژن گلکتین-3 در بافت قلب موش‌های صحرایی نر ویستار پس از القای آنفارکتوس قلبی نسبت به گروه شاهد سالم بود (05/0P<). همچنین بیان نسبی ژن مذکور در گروه شاهد ایسکمی به‌طور معناداری بالاتر از هر دو گروه‌های تمرینی بود (05/0P<). در مقایسة دو نوع تمرین، میزان نسبی بیان ژن گلکتین-3 در گروه تداومی کمتر بود (05/0P<).

کلیدواژه‌ها


عنوان مقاله [English]

Preventive effects of two continuous and interval endurance exercise protocols on myocardial Galectin-3 gene expressions in male Wistar rats following cardiac infarction induction

نویسندگان [English]

  • ahmad mohammadi moghaddam 1
  • vahid tadibi 1
  • naser behpoor 1
  • afshin nazari 2
1 Department of Sports Physiology, Faculty of Sports Sciences, Razi University, Kermanshah, Iran
2 Department of Physiology, Faculty of Medicine, Lorestan University of Medical Sciences, Lorestan, Iran
چکیده [English]

Purpose:  Biomarkers contain prognostic information for the identification and prevention of heart disease. Galactin-3 is one of the most probable intermediates between the activation of macrophages and cardiac fibrosis. This study investigates the expression of galectin-3 gene in the heart tissue of male Wistar rats following a period of continuous and interval endurance training.
Methods: In the present study, 32 rats were kept under standard conditions and divided into four groups (healthy control group, ischemic control group, continuous training group and interval training group). The healthy control group, without an infarction, and ischemic control group, were suffered cardiac infarction after eight weeks. The training groups have also performed endurance training on treadmill for eight weeks and were suffered cardiac infarction after 48 hours of rest. One week after induction and confidence of ischemia, the rat’s hearts were separated and qRT-PCR method was used to measure the myocardium LGALS3 gene expression. t-test and one-way ANOVA test and then Tukey's post hoc test were used with significant level 0.05 to compare the groups.
Results: The findings of this research showed a significant increase in the expression of galectin-3 gene in heart tissue of male Wistar rats after induction of myocardial infarction compared to healthy control group (P < 0.05). Also, the relative expression of this gene in the ischemia control group was significantly higher than the both training groups (P < 0.05). Comparing two types of training, the relative level of expression of galectin-3 gene was lower in the continuous group (P < 0.05).
Conclusion: Suffering from infarction leads to increase in some of the myocardial risk factors and Cardiac fibrosis. Endurance training, especially regular continuous training can moderate the increase in some of these factors.

کلیدواژه‌ها [English]

  • Infarction
  • Macrophage
  • Galectin-3
  • Interval training
  • Continuous training
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  • تاریخ دریافت: 02 اردیبهشت 1398
  • تاریخ بازنگری: 08 شهریور 1398
  • تاریخ پذیرش: 01 آبان 1398
  • تاریخ اولین انتشار: 01 تیر 1400
  • تاریخ انتشار: 01 تیر 1400