Reproduction, Fertility and Development Reproduction, Fertility and Development Society
Vertebrate reproductive science and technology
RESEARCH ARTICLE

Sleep restriction in Wistar rats impairs epididymal postnatal development and sperm motility in association with oxidative stress

Gláucia E. M. L. Siervo A B , Fernanda M. Ogo A B , Aline D. Valério A , Thamara N. X. Silva B , Larissa Staurengo-Ferrari B , Tathiana A. Alvarenga C , Rubens Cecchini B , Waldiceu A. Verri Jr B , Flávia A. Guarnier B , Monica L. Andersen C and Glaura S. A. Fernandes A D
+ Author Affiliations
- Author Affiliations

A Department of General Biology, Biological Sciences Center, State University of Londrina – UEL, Rodovia Celso Garcia Cid, PR 445 - Km 380, Campus Universitário, 86057-970, Londrina, Paraná, Brazil.

B Department of General Pathology, Biological Sciences Center, State University of Londrina – UEL, Rodovia Celso Garcia Cid, PR 445 - Km 380, Campus Universitário, 86057-970, Londrina, Paraná, Brazil.

C Departamento de Psicobiologia, Universidade Federal de São Paulo – UNIFESP, Rua Napoleão de Barros, 925, Vila Clementino, 04024-002, São Paulo, SP, Brazil.

D Corresponding author. Email: glaura@uel.br

Reproduction, Fertility and Development 29(9) 1813-1820 https://doi.org/10.1071/RD15535
Submitted: 18 December 2015  Accepted: 27 September 2016   Published: 26 October 2016

Abstract

Good sleep quality has a direct effect on the activity of the neuroendocrine–reproductive control axis and oxidative stress. Thus, the aim of the present study was to evaluate whether sleep restriction (SR) during the peripubertal period impaired the postnatal development of the epididymis in Wistar rats. After 21 days SR (18 h per day), epididymides were collected on Postnatal Day (PND) 62 for evaluation of oxidative stress markers, inflammatory profile, sperm count and histopathological and stereological analyses; in addition, the motility of spermatozoa from the vas deferens was examined. SR significantly increased lipid peroxidation and glutathione levels in the caput and cauda epididymidis, and increased levels of total radical-trapping antioxidant potential in the caput epididymidis only. Neutrophil migration to the caput or corpus epididymidis was decreased by SR, and the size of the luminal compartment in the 2A region and the epithelial compartment in the 5A/B region was also decreased. In these regions, there was an increase in the size of the interstitial compartment. The percentage of immotile spermatozoa was higher in the SR group. In conclusion, SR affects epididymal postnatal development, as well as sperm motility, in association with increased oxidative stress and a decrease in the size of the epithelial compartment in the cauda epididymidis.


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