Involvement of microRNA-۱۳۳ and -۲۹ in cardiac disturbances in diabetic ovariectomized rats

سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 142

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شناسه ملی سند علمی:

JR_IJBMS-19-11_005

تاریخ نمایه سازی: 30 مهر 1400

چکیده مقاله:

Objective(s): Menopause and diabetes obviously increase the risk of cardiovascular disease in women. The aims of the present study were to evaluate the effects of ovariectomy in type ۲ diabetes on the histology and expression of miRNA-۲۹, miRNA-۱۳۳, IGF-۱ and Bcl-۲ genes and Bcl-۲ protein and caspase ۳ activity in the hearts of female rats. Materials and Methods: Forty Female Wistar rats were divided into four groups: control, sham, ovariectomized (OVX), and ovariectomized with type ۲ diabetes (OVX.D). After the ۸-week experiment, the histological evaluation of the heart tissue was performed using H&E staining and PAS analysis, and cardiac expression of miRNA-۲۹, miRNA-۱۳۳, IGF-۱, and Bcl-۲ were evaluated using real-time PCR, and Bcl-۲ protein and caspase ۳ activity were evaluated using Western blot and ELISA. Results: Ovariectomy significantly decreased miRNA-۲۹, miRNA-۱۳۳, IGF-۱, and BCL-۲ expression and Bcl-۲ protein and increased caspase ۳ activity in the heart compared to sham animals group (P<۰.۰۵). Type ۲ diabetes in ovariectomized rats markedly decreased expression of miRNA-۲۹, miRNA-۱۳۳, IGF-۱, BCL-۲ genes, and Bcl-۲ protein, and increased caspase ۳ activity and reduced collagen and fibroblast tissue and glycogen granule deposition in relation to OVX group (P<۰.۰۵). Conclusion: Our findings suggest that type ۲ diabetes and menopause synergically could enhance the cardiac fibrosis through dysregulation of miRNA-۲۹, miRNA-۱۳۳, IGF-۱, and Bcl-۲ genes expression and Bcl-۲ protein and upregulation of caspase ۳ activity.

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نویسندگان

Parisa Habibi

Department of Physiology, Tabriz University of Medical Sciences, Tabriz, Iran

Alireza Alihemmati

Department of Histology & Embryology, Tabriz University of Medical Sciences, Tabriz, Iran

Mohammadreza Nasirzadeh

Department of Physiology, Tabriz Branch, Islamic Azad University, Tabriz, Iran

Hadi Yousefi

Department of Physiology, Tabriz University of Medical Sciences, Tabriz, Iran

Mohammadrasoul Habibi

Tabriz University of Medical Sciences, Tabriz, Iran

Nasser Ahmadiasl

Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran

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