تاثیر تمرین استقامتی بر استرس اکسیداتیو ناشی از ایسکمی در قلب موش‌های صحرایی نرDOR: 20.1001.1.17359880.1400.14.3.8.9
محورهای موضوعی : مجله پلاسما و نشانگرهای زیستی
علی اوجاقی
1
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گروه تربیت بدنی و علوم ورزشی٬ واحد علوم و تحقیقات٬ دانشگاه آزاد اسلامی٬ تهران٬ ایران.
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فرشاد غزالیان
2
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گروه تربیت بدنی و علوم ورزشی٬ واحد علوم و تحقیقات٬ دانشگاه آزاد اسلامی٬ تهران٬ ایران.phdghazalian@gmail.com
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توحید وحدت پور
3
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گروه فیزیولوژی، دانشکده علوم پزشکی، واحد تبریز، دانشگاه آزاد اسلامی، تبریز، ایران
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حسین عابدنطنزی
4
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گروه تربیت بدنی و علوم ورزشی٬ واحد علوم و تحقیقات٬ دانشگاه آزاد اسلامی٬ تهران٬ ایران.
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رضا بدل زاده
5
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گروه فیزیولوژی٬ دانشکده پزشکی و مرکز تحقیقات پزشکی مولکولی و تحقیقات کاربردی دارویی٬ دانشگاه علوم پزشکی تبریز٬ تبریز٬ ایران.
)
کلید واژه: ایزوپروترنول, استرس اکسیداتیو, : قلب, ایسکمی, تمرین استقامتی,
چکیده مقاله :
زمینه و هدف: تمرینات منظم ورزشی احتمال بروز بیمارهای قلبی و عروقی را کاهش می دهد. دراین زمینه انتخاب نوع و شدت تمرین به عنوان الگـویی مناسب برای اثرگذاری هر چه بیشتر ضروری می باشد. هدف از مطالعه حاضر بررسی اثر 8 هفته تمرین استقامتی فزاینده بر استرس اکسیداتیو ناشی از ایسکمی در قلب موش های صحرایی نر سالم بود.روش کار: در این مطالعه 32سرموش صحرایی دوماهه نژادویستار درمحدوده ی وزنی 20±220 استفاده شد. موش ها پس از یک هفته سازگاری با محیط جدید، به طورتصادفی به چهارگروه 8 تایی: 1- گروه کنترل 2- گروه ایزوپرترنول3-گروه استقامتی 4- گروه استقامتی+ایزوپرترنول تقسیم شدند. گروه های تمرین استقامتی و تمرین استقامتی+ایزوپرترانول به مدت 8هفته تمرین استقامتی فزاینده اجرا کردند. رت ها ایزوپروترنول (دوز 85 میلی گرم /کیلوگرم ) را به صورت 2 روز متوالی و به صورت درون صفاقی دریافت کردند. سپس فعالیت آنزیم هـای سوپراکـسید دیـسموتاز، گلوتـاتیون پراکسیداز، کاتالاز و مالون دی آلدئید با استفاده از کیت های اختصاصی اندازه گیری شدند.یافته ها: نتایج نشان داد، ایسکمی قلبی باعث کاهش معنادار میزان آنزیم های آنتی اکسسیدانی و افزایش پراکسیداسیون لیپیدی نسبت به گروه کنترل و ورزش شد، در حالی که هشت هفته تمرین استقامتی قبل از ایسکمی باعث افزایش فعالیت آنزیم های آنتی اکسیدانی و کاهش مالون دی آلدئید نسبت به گروه ایسکمی گردیده است. نتیجه گیری: نتایج این مطالعه نشان داد، تمرین استقامتی از طریق کاهش استرس اکسیداتیو می تواند در برابر آسیب های ناشی از ایسکمی اثر درمانی داشته باشد و اختلالات ناشی ازایسکمی قلبی را کاهش می دهد.
Inroduction & Objective: Regular exercise reduces the incidence of cardiovascular diseases. In this context, choosing the type and intensity of training as a suitable model for further effectiveness is essential. The aim of this study was to investigate the effect of 8 weeks of endurance training on oxidative stress induced by ischemia in male rats.Materials and Methods: In this study, thirty two male Wistar rats in the weight range of 220± 20g were used. After one week of adaptation to the new environment, mice were randomly divided into four groups (n=8): 1- Control group, 2- Isoproterenol group (ISO), 3- Endurance exercise group (EnEx) 4- Endurance exercise group + Isoproterenol (EnEx + ISO). EnEx and EnEx + ISO groups were undergoing endurance training for 8 weeks. At the end of the eighth week of training, Isoproterenol (85 mg / kg) was administered intraperitoneally for 2 consecutive days. Then, the activities of superoxide dismutase (SOD), glutathione peroxidase (GPX), catalase (CAT) and malondialdehyde (MDA) were measured with special kits. Results: Results showed that cardiac ischemia significantly decreased antioxidant enzymes and increased lipid peroxidation (MDA) as compared to control and exercise groups, while eight weeks of endurance training before ischemia increased antioxidant enzymes activity and decreased the level of MDA in comparison to ischemia group.Conclusion: The results of this study showed that endurance training can have a therapeutic effect against ischemia-related injuries by reducing oxidative stress and diminish ischemic heart disorders.
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