Mito-Tempo alleviates cryodamage by regulating intracellular oxidative metabolism in spermatozoa from asthenozoospermic patients.
The objective of this study was to investigate whether mitochondrial antioxidant Mito-Tempo was effective in preventing cryodamage of asthenozoospermic spermatozoa. Asthenozoospermic semen samples were collected and cryopreserved in media supplemented with different concentrations (0.0, 1.0, 10 and 100 μM) of Mito-Tempo. We measured sperm motility, viability, membrane integrity, DNA fragmentation, mitochondrial membrane potential, oxidation product, and antioxidant enzymes activities. Supplementation of the cryopreservation media with Mito-Tempo (10 and 100 μM) induced a significant improvement in sperm viability, motility, membrane integrity, mitochondrial membrane potential and chromatin integrity (P < 0.05). Significant enhancement of antioxidant enzymes activities accompanied by the decreased formation of oxidation products (ROS and MDA) was also observed in groups supplemented with Mito-Tempo (10 and 100 μM). It is concluded that mitochondria targeted antioxidant Mito-Tempo alleviates cryodamage by regulating intracellular oxidative metabolism in spermatozoa from asthenozoospermic patients after cryopreservation.
PMID: 31734127 [PubMed - as supplied by publisher]
Source: Cryobiology - Category: Biology Authors: Zhang X, Lu X, Li J, Xia Q, Gao J, Wu B Tags: Cryobiology Source Type: research