Effect of Poria cocos Mushroom Polysaccharides (PCPs) on the Quality and DNA Methylation of Cryopreserved Shanghai White Pig Spermatozoa
文献类型: 外文期刊
作者: Zhou, Jinyong 1 ; Zhang, Keqin 1 ; Gao, Jun 1 ; Xu, Jiehuan 1 ; Wu, Caifeng 1 ; He, Mengqian 1 ; Zhang, Shushan 1 ; Zhang, Defu 1 ; Dai, Jianjun 1 ; Sun, Lingwei 1 ;
作者机构: 1.Shanghai Acad Agr Sci, Inst Anim Husb & Vet Med, Shanghai 201106, Peoples R China
2.Guizhou Univ, Coll Anim Sci, Guiyang 550025, Peoples R China
3.Minist Agr & Rural Affairs, Key Lab Livestock & Poultry Resources Pig Evaluat, Shanghai 201106, Peoples R China
关键词: Shanghai white pig; semen cryopreservation; Poria cocos mushroom polysaccharides (PCPs); antioxidant; DNA methylation
期刊名称:CELLS ( 影响因子:6.0; 五年影响因子:6.7 )
ISSN:
年卷期: 2023 年 12 卷 11 期
页码:
收录情况: SCI
摘要: In this study, we explore the effects of Poria cocos mushroom polysaccharides (PCPs) on the quality and DNA methylation of the cryopreserved spermatozoa of Shanghai white pigs. A total of 24 ejaculates (three ejaculate samples per boar) from eight Shanghai white pigs were manually collected. The pooled semen was diluted with a based extender supplemented with different concentrations of PCPs (0, 300, 600, 900, 1200, and 1500 mu g/mL). Once thawed, the quality of the spermatozoa and their antioxidant function were assessed. In the meantime, the effect of spermatozoa DNA methylation was also analyzed. The results show that compared with the control group, 600 mu g/mL of PCPs significantly improves the spermatozoa viability (p < 0.05). The motility and plasma membrane integrity of the frozen-thawed spermatozoa are significantly higher after treatment with 600, 900, and 1200 mu g/mL of PCPs compared with the control group (p < 0.05). In comparison with the control group, the percentages of acrosome integrity and mitochondrial activity are significantly enhanced after the application of 600 and 900 mu g/mL PCPs (p < 0.05). The reactive oxygen species (ROS), the malondialdehyde (MDA) levels, and the glutathione peroxidase (GSH-Px) activity, in comparison with the control group, are significantly decreased in all groups with PCPs (all p < 0.05). The enzymatic activity of superoxide dismutase (SOD) in spermatozoa is significantly higher in the treatment with 600 mu g/mL of PCPs than in the other groups (p < 0.05). As compared with the control group, a significant increase in the catalase (CAT) level is found in the groups with PCPs at 300, 600, 900, and 1200 mu g/mL (all p < 0.05). In comparison with the control group, the 5-methylcytosine (5-mC) levels are significantly decreased in all groups with PCPs (all p < 0.05). As a result of these findings, a certain amount of PCPs (600-900 mu g/mL) added to the cryodiluent can significantly improve the quality of Shanghai white pig spermatozoa and can also reduce the methylation of spermatozoa DNA caused by cryopreservation. This treatment strategy may establish a foundation for the cryopreservation of semen from pigs.
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