تأثیر هشت هفته تمرین تناوبی شدید بر بیان بافتی miRNA-1 و miRNA-21 قلبی موش‌های صحرایی نر نژاد ویستار سالم

نوع مقاله : علمی - پژوهشی

نویسندگان

1 گروه فیزیولوژی ورزشی، دانشکدة تربیت بدنی و علوم ورزشی، دانشگاه تبریز، تبریز، ایران

2 گروه علوم ورزشی، دانشکدة علوم تربیتی و روان‌شناسی، دانشگاه شهید مدنی آذربایجان، تبریز، ایران

چکیده

زمینه و هدف: microRNA (miRNA) دستة جدیدی از شاخص‌های زیستی‌اند که در سطح سلولی و مسیرهای پیام‌رسانی در تغییرات ساختاری و عملکردی قلبی درگیرند. همچنین تمرینات تناوبی شدید (HIIT) شامل وهله‌های فعالیت ورزشی نسبتاً شدید با مدت زمان کوتاه است که با دوره‌های بازیافت فعال یا غیرفعال از یکدیگر جدا شده‌اند، می‌تواند سبب بهبود آمادگی قلبی-تنفسی و متغیرهای فیزیولوژیک متناظر با آن در افراد سالم شود. ازاین‌رو پژوهش حاضر در نظر دارد اثر هشت هفته تمرین تناوبی با شدید را بر بیان بافتی miR-1 و miR-21 در بافت بطن چپ قلب موش‌های صحرایی نر بالغ نژاد ویستار بررسی کند.
مواد و روش‌ها: بدین‌منظور در یک طرح پژوهشی تجربی، 20 سر موش صحرایی نر بالغ نژاد ویستار انتخاب و به‌طور تصادفی در دو گروه همگن ۱۰ سری شامل کنترل سالم (C) و سالم با تمرین تناوبی شدید (T) تقسیم شدند. بر این اساس موش‌های صحرایی به مدت هشت هفته و در پنج روز هفته تحت برنامة تمرین تناوبی شدید (HIIT) روی نوار گردان الکترونیکی هوشمند قرار گرفتند. HIIT با شدت 85-90 درصد سرعت بیشینه در 6-12 وهلة دودقیقه‌ای و با تناوب‌های استراحت فعال سه‌دقیقه‌ای با شدت 30 درصد VO2max اعمال شد. در انتهای قرارداد مطالعه، تمامی موش‌های صحرایی ۴۸ ساعت پس از آخرین مداخله به روش بدون درد برای بررسی تغییرات بیان miRNA-1، miRNA-21 روش PCR در بافت بطن چپ قلب بی‌هوش و جراحی شدند. برای بررسی طبیعی بودن توزیع داده‌ها از آزمون شاپیرو-ویلک و برای آزمون فرضیه‌ها از تحلیل واریانس دوراهه در سطح معناداری 05/0≥ P با نرم‌افزار آماری SPPS26 استفادهشد.
نتایج: بیان نسبی miRNA-21 گروه تمرین نسبت به گروه کنترل به‌طور معناداری بیشتر بود. درحالی‌که بیان miRNA-1 گروه تمرین به‌طور معناداری کمتر از گروه کنترل بود (05/0 >P).
نتیجه‌گیری: به‌نظر می‌رسد در سطح بافت قلبی تغییرات بیان miRNA-21 و miRNA-1 با مسیرهای پیام‌رسانی به‌روز سازگاری‌های مرتبط با تمرینات ورزشی در ارتباط است.

کلیدواژه‌ها

عنوان مقاله [English]

The effect of eight weeks high intensity interval training on the expression of cardiac miRNA-21 and miRNA-1 in wistar male rats

نویسندگان [English]

  • Sohrab Ghalehgir 1
  • Javad Vakili 1
  • Mostafa Khani 1
  • Karim Azali Alamdari 2
1 Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Tabriz, Tabriz, Iran.
2 Department of Sport Sciences, Faculty of Education and Psychology, Azarbaijan Shahid Madani University, Tabriz, Iran
چکیده [English]

Background and Purpose: microRNA (miRNA) are a new class of biomarkers that are involved in many biological processes and gene expression. Also, High-intensity exercise training (HIIT) has long been demonstrated to help improve cardiorespiratory fitness and corresponding physiological variables in healthy individuals. The training involves repeated short to long bouts of relatively high-intensity exercise alternating with recovery periods of low-intensity activity or passive rest. Thus, the present study examined the effect of eight weeks of high intensity interval training (HIIT) on the expression of miRNA-21 and miRNA-21 in male rats.
Materials and Methods: In this experimental study, twenty adult Wistar male rats were selected and randomly divided into two groups: control and HIIT (T) protocols. Accordingly, the rats underwent the HIIT program on smart electronic tape recorders for eight weeks, five days a week. HIIT training was performed with an intensity of 85-90% of maximum speed in 6-12 times for two minutes and with 3-minute active rest intervals with an intensity of 30% VO2max. At the end of the study contract, all mice were anesthetized and operated 48 hours after the last intervention without painless method to determine changes in miR-1 and miR-21 gene expression by real-time PCR in left ventricular tissue. To investigate the normality of data distribution, Shapiro-Wilk test and to test the hypotheses, two-way analysis of variance was performed at a significance level of P > 0.05 with SPPS26 statistical software.
Results: miRNA-21 expression were significantly higher after eight weeks HIIT than control groups (P < 0.05). However, miRNA-1 expression were significantly lower after eight weeks HIIT than control groups (P < 0.05).
Conclusion: It seems that changes in the tissue level of miRNA-21 and miRNA-1 expression are related to the signaling pathways of adaptations related to exercise training.

کلیدواژه‌ها [English]

  • High Intensity Interval Training
  • miRNA-1
  • miRNA-21
  • cardiac tissue
  • rats

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  • تاریخ دریافت: 30 خرداد 1401
  • تاریخ بازنگری: 06 مرداد 1401
  • تاریخ پذیرش: 18 مرداد 1401
  • تاریخ اولین انتشار: 01 شهریور 1401
  • تاریخ انتشار: 01 شهریور 1401

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