Back to Search Start Over

Sperm preparedness and adaptation to osmotic and pH stressors relate to functional competence of sperm in Bos taurus.

Authors :
Lavanya, Maharajan
Archana, Santhanahalli Siddalingappa
Swathi, Divakar
Ramya, Laxman
Arangasamy, Arunachalam
Binsila, Balakrishnan
Dhali, Arindam
Krishnaswamy, Narayanan
Singh, Sanjay Kumar
Kumar, Harendra
Sivaram, Muniandy
Selvaraju, Sellappan
Source :
Scientific Reports; 11/19/2021, Vol. 11 Issue 1, p1-13, 13p
Publication Year :
2021

Abstract

The adaptive ability of sperm in the female reproductive tract micromilieu signifies the successful fertilization process. The study aimed to analyze the preparedness of sperm to the prevailing osmotic and pH stressors in the female reproductive tract. Fresh bovine sperm were incubated in 290 (isosmotic-control), 355 (hyperosmotic-uterus and oviduct), and 420 (hyperosmotic-control) mOsm/kg and each with pH of 6.8 (uterus) and 7.4 (oviduct). During incubation, the changes in sperm functional attributes were studied. Sperm kinematics and head area decreased significantly (p < 0.05) immediately upon exposure to hyperosmotic stress at both pH. Proportion of sperm capacitated (%) in 355 mOsm/kg at 1 and 2 h of incubation were significantly (p < 0.05) higher than those in 290 mOsm media. The magnitude and duration of recovery of sperm progressive motility in 355 mOsm with pH 7.4 was correlated with the ejaculate rejection rate (R<superscript>2</superscript> = 0.7). Using this information, the bulls were divided into good (n = 5) and poor (n = 5) osmo-adapters. The osmo-responsive genes such as NFAT5, HSP90AB1, SLC9C1, ADAM1B and GAPDH were upregulated (p < 0.05) in the sperm of good osmo-adapters. The study suggests that sperm are prepared for the osmotic and pH challenges in the female reproductive tract and the osmoadaptive ability is associated with ejaculate quality in bulls. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20452322
Volume :
11
Issue :
1
Database :
Complementary Index
Journal :
Scientific Reports
Publication Type :
Academic Journal
Accession number :
153683012
Full Text :
https://doi.org/10.1038/s41598-021-01928-6