استرس اکسیداتیو و التهاب و کاهش بیان miRNA-149 در استریاتوم در مدل ایسکمیک-رپرفیوژن سکته مغزی در موش صحرایی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه علوم جانوری و زیست دریا، دانشکده علوم زیستی و بیوتکنولوژی، دانشگاه شهید بهشتی، تهران، ایران

2 موسسه علوم شناختی و مغز، دانشگاه شهید بهشتی، تهران، ایران

3 گروه زیست شناسی سلولی-مولکولی، دانشکده علوم و فناوری زیستی، دانشگاه شهید بهشتی، تهران، ایران

4 مرکز تحقیقات نوروفیزیولوژی، دانشگاه شاهد، تهران، ایران

چکیده

مقدمه و هدف: سکته مغزی ایسکمیک جزء علل اصلی مرگ و ناتوانی در جهان است. درمان‌ها با وجود پیشرفت‌ها هنوز هم به نتایج مطلوبی نرسیده است. ازآنجاکه میکروRNAها می‌توانند به‌عنوان کاندیدهای مطلوبی برای تشخیص و یا درمان سکته مغزی مورد بررسی قرار گیرند، در این تحقیق به بررسی تأثیر سکته مغزی ایسکمیک بر استرس اکسیداتیو، التهاب و بیان miRNA149-5p در ناحیه استریاتوم در مدل آسیب ایسکمیک-رپرفیوژن مغز موش صحرایی پرداخته شده است.
مواد و روش ها: 42 سر موش نر نژاد ویستار به دو گروه شم و ایسکمیک تقسیم شدند. سپس با استفاده از مدل انسداد شریان مرکزی مغز، ایسکمی مغزی در گروه مورد نظر ایجاد شد. پس از 24 ساعت، نقایص عصبی، ادم مغزی، نفوذپذیری سد خونی-مغزی، بیان miRNA149-5p و آنزیم‌های مرتبط با استرس اکسیداتیو و التهاب در ناحیه استریاتوم، مورد ارزیابی قرار گرفت. داده‌ها با استفاده از نرم‌افزارGraphPad Prism  و تست آماری تی غیرمزدوج مورد بررسی آماری قرار گرفتند.
نتایج: نتایج این مطالعه نشان داد که سکته مغزی ایسکمیک باعث کاهش عملکرد عصبی و افزایش ادم مغزی و نفوذپذیری سد خونی-مغزی شد. از طرف دیگر منجر به افزایش سطح فاکتورهای اکسیدانی و التهابی و کاهش سطح فاکتورهای آنتی‌اکسیدانی در استریاتوم شد. همچنین مشاهده شد که سکته مغزی ایسکمیک تأثیر معنا‌داری بر کاهش بیان miRNA149-5p دارد.
نتیجه‌گیری: این تحقیق نشان داد miRNA149-5p در موش‌های تحت سکته مغزی تغییر می‌کند. این یافته ممکن است به درک بهتر در روش‌های درمانی و تشخیص سکته مغزی کمک کند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Striatal oxidative stress and inflammation and lower expression of miRNA-149 in ischemic-reperfusion murine model of stroke

نویسندگان [English]

  • Samira Vahidi 1
  • Mohammad Reza Bigdeli 2
  • Hosein Shahsavarani 3
  • Salma Ahmadlou 1
  • Mehrdad Roghani 4
1 Department of Animal Science and Marine Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, IranInstitute for Cognitive and Brain Science, Shahid Beheshti University, Tehran, Iran
2 IranInstitute for Cognitive and Brain Science, Shahid Beheshti University, Tehran, Iran
3 Department of Cell and Molecular Biology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
4 Neurophysiology Research Center, Shahed University, Tehran, Iran
چکیده [English]

Background and Objective: Ischemic stroke is one of the main causes of death and disability in the world. Despite advancements, treatments have not achieved the desired results yet. Since microRNAs can be promising candidates for ischemic stroke diagnosis and treatment, this study investigated the impact of ischemic stroke on oxidative stress, inflammation, and miRNA149-5p expression in the striatum region in a rat model of ischemia-reperfusion brain injury.
Materials and Methods: In this research, 42 Male Wistar rats were divided into sham and ischemic groups. Using the middle cerebral artery occlusion (MCAO) model, cerebral ischemia was induced in the target group. After 24 hours, neurological deficits, cerebral edema, blood-brain barrier permeability, miRNA149-5p expression, and enzymes related to oxidative stress and inflammation were evaluated. Data were statistically analyzed using GraphPad Prism software and unpaired t test.
Results: The results of this study indicated that ischemic stroke leads to a decrease in neurological function, increased cerebral edema, and higher blood-brain barrier permeability. Furthermore, it resulted in elevated levels of oxidative and inflammatory factors and reduced levels of antioxidant factors in the striatum region. Additionally, ischemic stroke significantly caused downregulation of miRNA149-5p expression.
Conclusion: This study demonstrated that miRNA149-5p changes in rats subjected to ischemic stroke. This finding could contribute to a better understanding of therapeutic and diagnostic methods for stroke.

کلیدواژه‌ها [English]

  • Ischemic stroke
  • MiRNA149-5p
  • Neurological defects
  • Blood-brain barrier permeability
  • Cerebral edema
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