نوع مقاله : مقاله پژوهشی Released under (CC BY-NC) license I Open Access I

نویسندگان

1 دانشجوی دوره دکتر فیزیولوژی ورزشی، گروه تربیت بدنی، واحد لارستان، دانشگاه آزاد اسلامی، لارستان، ایران

2 دانشیار فیزیولوژی ورزشی، دانشگاه آزاد اسلامی واحد شیراز

3 استادیار فیزیولوژی ورزشی، گروه تربیت بدنی، واحد لارستان ، دانشگاه آزاد اسلامی، لارستان، ایران

4 استادیار فیزیولوژی، گروه فیزیولوژی، واحد شیراز، دانشگاه آزاد اسلامی، شیراز، ایران

چکیده

مطالعه حاضر با هدف بررسی اثر هشت هفته تمرین استقامتی با شدت متوسط بر بیان ژن هیپوکامپی عامل نوروتروفیک مشتق از مغز و گیرنده تیروزین کیناز B در موش های صحرایی آلزایمری شده با نوروتوکسین تری‮متیل‮تین انجام شد.‬‬‬‬‬‬
در این مطالعه 24 سر موش صحرایی نر بالغ از نژاد اسپراگ داولی با سن هشت هفته با تزریق درون صفاقی mg/kg 8، سم تری‮متیل‮تین کلراید مبتلا به بیماری آلزایمر شده و در گروه‮های (1) کنترل مبتلا به آلزایمر هفته اول، (2) کنترل مبتلا به آلزایمر هفته آخر، و (3) تمرین استقامتی+TMT تقسیم شدند. جهت بررسی اثرات القاء بیماری آلزایمر و گذر هشت هفته عمر بر متغیرهای تحقیق 61 سر موش صحرایی سالم در گروه کنترل هفته اول و کنترل هفته آخر قرار گرفتند. موش‮های صحرایی گروه تمرین استقامتی به مدت هشت هفته، سه جلسه در هفته، هر جلسه 51 تا 03 دقیقه و با سرعت 51 تا 02 متر بر دقیقه بر نوارگردان ویژه موش‮های صحرایی دویدند
نتایج نشان داد بیان ژن BDNF و گیرنده TrkB در گروه کنترل آلزایمر هفته اول به طور معنی داری کمتر از گروه سالم هفته اول بود؛ همچنین تفاوت معنی‌داری در بیان ژن هیپوکامپی BDNF و گیرنده TrkB بین گروه کنترل مبتلا به بیماری آلزایمر قربانی هفته آخر در مقایسه با گروه تمرین استقامتی وجود ندارد.
به نظر می‮رسد تمرین استقامتی با شدت و مدت به کار رفته در تحقیق حاضر اثر معنی‮داری بر تغییرات بیان ژن هیپوکامپی FNDB و گیرنده BKrT در موش‌های صحرایی مدل دژنراسیون هیپوکامپ ندارد.

کلیدواژه‌ها

عنوان مقاله [English]

The effect of eight weeks moderate-intensity endurance training on hypocampic brain-derived neurotrophic factor and tyrosine kinase B receptor gene expression in the rats with hippocampal degeneration model

نویسندگان [English]

  • Fatemeh Akbari 1
  • mehrzad moghadasi 2
  • Sirus Farsi Farsi 3
  • Mohammad Amin Edalatmanesh 4

1 Department of exercise physiology, Larestan branch, Islamic Azad University, Larestan, Iran

2 Associate professor in exercise physiology, Islamic Azad University, Shiraz branch

3 Assistant professor in exercise physiology, Department of exercise physiology, Larestan branch, Islamic Azad University, Larestan, Iran

4 Assistant professor in physiology, Department of physiology, Shiraz branch, Islamic Azad University, Shiraz, Iran

چکیده [English]

The purpose of the present study was to examine the effect of eight weeks moderate-intensity endurance training on hypocampic brain-derived neurotrophic factor (BDNF) and tyrosine kinase B (TrkB) receptor gene expression in the rats with hippocampal degeneration model.
In this experiment, twenty four mature Sprague-dawley male rats were subjected to Alzheimer’s disease through intraperitoneally injection of 8 mg/kg Trimethytin (TMT) and then were divided into (1) Alzheimer-infected control group, (2) endurance training, and (3) sham to study the impact of the disease on the variables. Sixteen healthy rats were assigned to the control group that eight rats sacrifice at first week and eight rats sacrifice at last week. The rats in the endurance training group ran on a rat treadmill with the speed of 15 to 20 meters per minute for 15 to 30 minutes in each session, 3 times a week for 8 weeks. To analyze the results of the tests, one-way ANOVA and Tukey post hoc test were run using SPSS
The results revealed that induction of Alzheimer’s disease by TMT decreases the BDNF and TrkB receptor gene expression in rats. The results, also indicated that there were no significant differences in hypocampic BDNF and TrkB receptor gene expression between endurance training group and sham group.
According to the study results, it seems that endurance training with specific intensity and duration utilized in this study had not significant effect on changes of hypocampic BDNF and TrkB receptor gene expression in the rats with hippocampal degeneration model.

کلیدواژه‌ها [English]

  • Endurance training
  • Brain-derived neurotrophic factor
  • Tyrosine kinase B receptor
  • Hippocampus
  • Alzheimer disease
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