Related Experiment Video
Updated: Feb 16, 2026
10:24
Evaluation of Intracellular Location of Reactive Oxygen Species in Solea Senegalensis Spermatozoa
Published on: March 11, 2018
6.7K
Antioxidant supplementation, effect on post-thaw spermatozoan function in three sturgeon species
1Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China.
Reproduction in Domestic Animals = Zuchthygiene
|December 22, 2017
Summary
Adding antioxidants like catalase, glutathione, and ascorbic acid to sturgeon sperm cryopreservation extenders improved post-thaw sperm quality by reducing reactive oxygen species (ROS). Cysteine was ineffective, and combinations showed no synergistic benefits.
Area of Science:
- Reproductive biology
- Cryopreservation science
- Biochemistry
Background:
- High reactive oxygen species (ROS) levels negatively impact sperm quality during cryopreservation.
- Sturgeon sperm cryopreservation is challenging due to oxidative stress.
Purpose of the Study:
- To evaluate the efficacy of antioxidants in preserving sperm quality during cryopreservation.
- To investigate the effects of catalase (CAT), glutathione (GSH), and ascorbic acid (VC) on post-thaw sperm characteristics in Acipenser species.
Main Methods:
- Sperm samples from Acipenser dabryanus, Acipenser sinensis, and Acipenser baerii were cryopreserved using extenders with or without antioxidants (CAT, GSH, cysteine, VC).
- Protective concentrations were determined, and post-thaw sperm parameters including acrosome integrity, membrane integrity, and motility were assessed.
- Antioxidant combinations were also tested for synergistic effects.
Main Results:
- Catalase, glutathione, and ascorbic acid significantly improved acrosome and membrane integrity in post-thawed sperm across all three sturgeon species.
- Ascorbic acid and glutathione demonstrated protective effects at concentrations of 0.5 mg/ml and 0.25-0.5 mg/ml, respectively.
- Cysteine did not provide protection against ROS, and combined antioxidants did not yield synergistic improvements.
Conclusions:
- Antioxidants, specifically CAT, GSH, and VC, are effective in mitigating ROS during sturgeon sperm cryopreservation.
- The addition of these antioxidants can preserve sperm motility and integrity, enhancing cryopreservation success in sturgeon species.
- Further research may optimize antioxidant concentrations for specific sturgeon species.
