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Linoleic and linolenic acids reduce the effects of heat stress-induced damage in pig oocytes during maturation in vitro.
- Source :
-
In vitro cellular & developmental biology. Animal [In Vitro Cell Dev Biol Anim] 2022 Aug; Vol. 58 (7), pp. 599-609. Date of Electronic Publication: 2022 Aug 04. - Publication Year :
- 2022
-
Abstract
- Elevated environmental temperatures can induce heat stress which could reduce fertility and early embryonic development. Fatty acids can initiate an endergonic reaction that absorbs cellular heat and decreases intracellular temperature. This study's objective was to minimize heat stress-induced damage to in vitro matured oocytes by supplementing maturation media with either 50 μM linoleic or linolenic acid or both (25 or 50 μM) during maturation at either 38.5 or 41.5°C. Oocytes were evaluated for intracellular antioxidative pathways, fertilization characteristics, or early embryonic development. Elevated maturation temperatures increased (p < 0.05) reactive oxygen species (ROS) formation and supplementation with linoleic or linolenic acid decreased (p < 0.05) ROS in oocytes matured at 41.5°C. Maturation temperature had an effect (p < 0.05) on the intracellular antioxidative pathways of the oocyte except for glutathione peroxidase activity. Regardless of maturation temperature, supplementation with linoleic or linolenic acid increased (p < 0.05) the enzyme activities and glutathione concentrations in the oocytes compared to no fatty acid supplementation. Supplementation of both linoleic and linolenic acid decreased (p < 0.05) polyspermic fertilization rates. Supplementing either 25 or 50 μM linoleic and linolenic acid to maturing oocytes at 41.5°C increased (p < 0.05) cleavage rates by 48 h after IVF and the blastocyst formation rates by 144 h after IVF compared to other treatments. Oocytes matured at 38.5°C had greater (p < 0.05) embryonic development than those matured at 41.5°C except for those supplemented with 50 μM linoleic and linolenic acid. Supplementing 50 μM linoleic and linolenic acid to the maturation medium of pig oocytes reduces the effects of heat stress-induced damage.<br /> (© 2022. The Society for In Vitro Biology.)
- Subjects :
- Animals
Antioxidants metabolism
Antioxidants pharmacology
Blastocyst metabolism
Embryonic Development
Fertilization in Vitro
Glutathione metabolism
Glutathione Peroxidase metabolism
Heat-Shock Response
Oocytes
Reactive Oxygen Species metabolism
Swine
In Vitro Oocyte Maturation Techniques
Linolenic Acids metabolism
Linolenic Acids pharmacology
Subjects
Details
- Language :
- English
- ISSN :
- 1543-706X
- Volume :
- 58
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- In vitro cellular & developmental biology. Animal
- Publication Type :
- Academic Journal
- Accession number :
- 35925447
- Full Text :
- https://doi.org/10.1007/s11626-022-00708-4