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RESEARCH ARTICLE

Acute effect of high-intensity interval training exercise on redox status in the ovaries of rats fed a high-fat diet

Rodrigo L. Furtado A , Jonathan Elias R. Martins B , Maria Alice F. Oliveira C , Denise D. Guerreiro D , Naiza A. R. de Sá D , Alex S. M. Ferraz B , Vânia M. Ceccatto E , Ana Paula R. Rodrigues D and Valdevane R. Araújo https://orcid.org/0000-0003-3984-2099 A C F
+ Author Affiliations
- Author Affiliations

A Graduate Program in Physiological Sciences, Higher Institute of Biomedical Sciences, State University of Ceará, Fortaleza, CE, 60714-903, Brazil.

B Institute of Physical Education and Sports, Federal University of Ceará, Fortaleza, CE, 60455760, Brazil.

C Microscopy Laboratory of Health Sciences Center, State University of Ceará, Fortaleza, CE, 60714-903, Brazil.

D Laboratory of Manipulation of Oocytes and Preantral Follicles, Veterinary Faculty, State University of Ceará, Fortaleza, CE, 60714-903, Brazil.

E Laboratory of Biochemistry and Gene Expression, Higher Institute of Biomedical Sciences, State University of Ceará, Fortaleza, CE, 60714-903, Brazil.

F Corresponding author. Email: valdevane.araujo@gmail.com

Reproduction, Fertility and Development 33(12) 713-724 https://doi.org/10.1071/RD20326
Submitted: 12 December 2020  Accepted: 5 May 2021   Published: 27 August 2021

Abstract

This study demonstrates the effect of a single high-intensity interval training (HIIT) session on the redox status of rat ovaries with excess adiposity. Forty Wistar female rats (mean (±s.e.m.) weight 94.40 ± 13.40 g) were divided into two groups and fed either a standard diet (SD) or a high-fat diet (HFD) for 62 days. At the end of this period, the rats were subjected to a single HIIT session and were killed 24 h after exercise. Both groups subjected to exercise (SDex and HFDex) generated a significantly higher antioxidant environment by presenting a higher thiol content, which represents a lower oxidation rate of GSH than their respective controls (SD and HFD). The percentage of morphologically normal primary follicles decreased, whereas that of antral follicles increased, in the SDex group. In addition, the HFD group had a higher percentage of degenerated antral follicles than the SD and SDex groups. Cells immunoreactive for α-smooth muscle actin were seen in the cortical stroma and thecal layer enclosing late secondary and tertiary follicles in all groups. Moreover, heme oxygenase and cytochrome P450 family 19 subfamily A member 1 (Cyp19A1) labelling was seen in all antral follicles. Progesterone concentrations were significantly higher in the HFDex than SDex group. In conclusion, this study indicates that a single session of HIIT may result in an improvement in ovary redox status because of metabolic muscle activity by inducing physiological adaptation after exercise in a paracrine manner.

Keywords: adipose tissue, antral follicle, ovary, oxidative stress.


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