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Iranian Journal of Basic Medical Sciences، جلد ۲۴، شماره ۸، صفحات ۱۰۷۸-۱۰۸۶
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عنوان انگلیسی Interaction of miR-146a-5p with oxidative stress and inflammation in complications of type 2 diabetes mellitus in male rats: antioxidant and anti-inflammatory protection strategies in type 2 diabetic retinopathy
چکیده انگلیسی مقاله Objective(s): This study aimed to evaluate the role of miR-146a-5p in the pathogenesis of diabetic retinopathy and its interaction with oxidative stress and inflammation in the ocular tissue of rats with type 2 diabetes mellitus (T2DM). Materials and Methods: Twenty adult male Sprague Dawley rats (220 ±20 g) were randomly assigned to control and diabetic groups. A high-fat diet was used for three months to induce T2DM which was confirmed by the HOMA-IR index. After that, the levels of glucose and insulin in serum, HOMA-IR as an indicator of insulin resistance, the ocular level of oxidative markers, TNF‐α, IL-1β, MIPs, and MCP-1 along with ocular gene expression of NF-κB, Nrf2, and miR-146a-5p were evaluated.Results: The level of lipid peroxidation along with metabolic and inflammatory factors significantly increased and the antioxidant enzyme activity significantly decreased in diabetic rats (p < 0.05). The ocular expression of NF-κB and TNF-α increased and Nrf2, HO-1, and miR-146a-5p expression decreased in diabetic rats (p < 0.05). In addition, a negative correlation between miR-146a-5p expression with NF-κB and HOMA-IR and a positive correlation between miR-146a-5p with Nrf2 were observed.Conclusion: It can be concluded that miR-146a-5p may regulate Nrf2 and NF-κB expression and inflammation and oxidative stress in the ocular tissue of diabetic rats.
کلیدواژه‌های انگلیسی مقاله Diabetic retinopathy, Inflammation, MicroRNA, Oxidative stress, Type 2 diabetes
نویسندگان مقاله | Seyed Ahmad Rasoulinejad
Department of Ophthalmology, Ayatollah Rouhani Hospital, Babol University of Medical Sciences, Babol, Iran


| Abolfazl Akbari
Department of Physiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran


| Khadijeh Nasiri
Department of Exercise Physiology, Faculty of Sport Sciences, University of Mazandaran, Babolsar, Iran
نشانی اینترنتی https://ijbms.mums.ac.ir/article_18494.html
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