eISSN: 2299-0038
ISSN: 1643-8876
Menopause Review/Przegląd Menopauzalny
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4/2018
vol. 17
 
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abstract:
Original paper

Effects of six weeks of resistance-endurance training on microRNA-29 expression in the heart of ovariectomised rats

Morteza Jourkesh, Rahman Soori, Conrad P. Earnest, Lamia Mirheidari, Ali Asghar Ravasi, Stephen R. Stannard, Matias Monsalves-Alvarez

Menopause Rev 2018; 17(4): 155-160
Online publish date: 2019/01/30
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Introduction
Heart disease risk rises with age. However, women’s symptoms become more pronounced following the onset of menopause. The aim of the present study was to evaluate the effects of six weeks of combined resistance-endurance (RE) training on microRNA-29 expression in the heart of ovariectomised rats.

Material and methods
Thirty female Wistar rats were divided into three groups: 1) sham (SHAM); 2) ovariectomy (OVX); and 3) OVX with RE training (OVX + RE). The effects of these treatments on cardiac microRNA-29 expression were measured using real-time PCR. Data were analysed using a 2 × 3 ANOVA and Tukey post-hoc comparisons and presented as mean ±SEM.

Results
Ovariectomy resulted in a significant down-regulation in the heart microRNA-29 gene expression of OVX (0.265 ±0.031 fold changes), OVX + RE (0.699 ±0.038 fold changes) in animals vs. sham animals (1 ±0 fold changes; all, p < 0.05) following six weeks of treatment. However, microRNA-29 expression in the OVX + RE group was significantly greater than in the OVX group (p < 0.05).

Conclusions
Our findings suggest that the six weeks of regular RE training attenuate the reduction in heart muscle microRNA-29 expression observed in ovariectomised rates. If our findings carry over to humans, such an exercise regimen could be beneficial to the cardiovascular disease risk in women during menopause.

keywords:

ovariectomy, exercise training, microRNA-29, cardiac

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