Sperm oxidative stress during In vitro manipulation and its effects on sperm function and embryo development

Kalthur, Guruprasad and Adiga, Satish Kumar (2021) Sperm oxidative stress during In vitro manipulation and its effects on sperm function and embryo development. Antioxidants, 10 (7). pp. 1-24. ISSN 2076-3921

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Reactive oxygen species (ROS) generated at low levels during mitochondrial respiration have key roles in several signaling pathways. Oxidative stress (OS) arises when the generation of ROS exceeds the cell’s antioxidant scavenging ability and leads to cell damage. Physiological ROS production in spermatozoa regulates essential functional characteristics such as motility, capacitation, acrosome reaction, hyperactivation, and sperm-oocyte fusion. OS can have detrimental effects on sperm function through lipid peroxidation, protein damage, and DNA strand breakage, which can eventually affect the fertility of an individual. Substantial evidence in the literature indicates that spermatozoa experiencing OS during in vitro manipulation procedures in human- and animalassisted reproduction are increasingly associated with iatrogenic ROS production and eventual impairment of sperm function. Although a direct association between sperm OS and human assisted reproductive techniques (ART) outcomes after in vitro fertilization (IVF) and/or intracytoplasmic sperm injection (ICSI) is still a matter of debate, studies in animal models provide enough evidence on the adverse effects of sperm OS in vitro and defective fertilization and embryo development. This review summarized the literature on sperm OS in vitro, its effects on functional ability and embryo development, and the approaches that have been proposed to reduce iatrogenic sperm damage and altered embryonic development.

Item Type: Article
Uncontrolled Keywords: Spermatozoa; male infertility; oxidative stress; assisted reproductive technologies; embryo development.
Subjects: Medicine > KMC Manipal > Clinical Embryology
Depositing User: KMC Library
Date Deposited: 25 Aug 2021 08:33
Last Modified: 25 Aug 2021 08:33
URI: http://eprints.manipal.edu/id/eprint/157193

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