نوع مقاله : مقاله پژوهشی Released under (CC BY-NC) license I Open Access I
نویسندگان
1 دانشجوی دکترای فیزیولوژی ورزشی قلب و عروق و تنفس، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران
2 استادیار دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران؛
3 استاد دانشگاه شهید بهشتی
4 دانشیار دانشگاه تهران
5 استادیار، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران
چکیده
هدف: علت عمده مرگ‌ومیر مربوط به دیابت، بیماریهای قلبی عروقی است که در این فرآیند آپوپتوز نقش عمده ای ایفا می کند. با توجه به اینکه فعالیت بدنی میتواند از قلب در برابر آسیب های ناشی از آپوپتوز حفاظت کند، این مطالعه اثر ۸ هفته تمرین مقاومتی بر مارکرهای آپوپتوز سلول های قلب رت های دیابتی شده را مورد بررسی قرار داده است.
روش کار: 20 سر رت صحرایی نر نژاد ویستار، با سن تقریبی 8 هفته، محدوده وزنی 250-210 گرم به دو گروه مساوی تقسیم شدند. دیابت با تزریق درون صفاقی استرپتوزوتوسین (50 kg/mg) در گروه های دیابتی ایجاد گردید. گروه تمرین مقاومتی روی نردبانی با شیب ۸۰ درجه و با وزنه ای برابر ۳۰-۱۰۰ % وزن بدنشان، تمرین کردند. در مقابل گروه کنترل بدون تمرین ماندند. برای بررسی سازگاری تمرین مقاومتی، نمونه خون و بافت قلب رتها جمع آوری شد. مقادیر گلوکز، انسولین، شاخص مقاومت به انسولین سرمی و سطوح بیان ژن Bcl-2 , Bax caspase 8و نسبت Bax به Bcl-2 ارزیابی شد.
یافته ها: در رتهای دیابتی ۸ هفته تمرین مقاومتی منجر به کاهش معنی داری در بیان ژن Baxو نسبت bax به Bcl-2 (p=0/000) وافزایش معنی داری در Bcl-2 (p=0/000) و caspase 8 (p=0/004) نسبت به گروه کنترل شد.
نتیجه گیری: نتایج نشان می دهد تمرینات مقاومتی می تواند به عنوان یک راه کار غیر دارویی برای کاهش عوارض آپوپتوز سلول های قلبی در افراد دیابتی مورد استفاده قرار گیرد.
کلیدواژه‌ها
عنوان مقاله [English]
The effect of 8 weeks resistance exercise on cardaic apoptosis biomarkers in diabetic rats
نویسندگان [English]
- hamideh montazery taleghani 1
- nader shakeri 2
- khosrow ebrahim 3
- rahman soori 4
- M Gholami 5
1 PhD Student, Department of Physical Education and Sport Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 Assistant Professor, Science and Research Branch, Islamic Azad University, Tehran, Iran,
3 Professor of Shahid Beheshti University
4 Associate professor, tehran university
5 Assistant Professor, Science and Research Branch, Islamic Azad University, Tehran, Iran,
چکیده [English]
Background: A main reason of death in diabetes is cardiovascular diseases, which apoptosis plays a critical role through the progress. As known, body exercises can avoid damaging effects of apoptosis on human heart. This study is investigating the effects of resistance exercises in a period of 8 weeks on cardiomyocyte apoptosis status in streptozotocin induced diabetic rats..
Materials and methods:20 male wistar rats with age of 8 weeks and 210-250 g weight randomly allocated into two groups. Diabetes was induced by a single intraperitoneal injection of STZ (50 mg/kg) in diabetic groups. The resistance training carried out a step ladder, load of 30-100 percentage of weight whereas control group remained sedentary. Measuring training adaptations blood and heart tissue samples were taken bout The level of the serum glucose, insulin, insulin resistance index, and gene expression levels Bcl-2,Bax,caspase8 and the ratio of bax/ Bcl-2 were assessed.
Results: Implementation of 8 weeks of resistance exercise resulted significant decrease in gene expression levels Bax and the ratio of bax/ Bcl-2 (p=0/000)and a significant increase in Bcl-2(p=0/000) and caspase 8 (p=0/004) compare with control group in diabetic rats.
Conclusion: The results show that resistance exercise may be used as a non‐pharmacological strategy to reduce the diabetes‐induced apoptosis in the heart in diabetes disease.
Keyword:Type 2 diabetes,apoptosis,resistance exercise, gene expression
کلیدواژه‌ها [English]
- Type 2 diabetes
- apoptosis
- resistance exercise
- gene expression
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