Disaccharide combinations and the expression of enolase3 and plasma membrane Ca2+ ATPase isoform in sturgeon sperm cryopreservation
文献类型： 外文期刊
第一作者： Xi, M. D.
作者： Xi, M. D.;Wei, Q. W.;Xi, M. D.;Wei, Q. W.;Xi, M. D.;Li, P.;Du, H.;Qiao, X. M.;Liu, Z. G.;Wei, Q. W.;Xi, M. D.;Li, P.;Du, H.;Qiao, X. M.;Liu, Z. G.;Wei, Q. W.;Li, P.
作者机构：
关键词： cryopreservation; disaccharides; enolase3; plasma membrane Ca2+-ATPase isoform; sperm
期刊名称：REPRODUCTION IN DOMESTIC ANIMALS （ 影响因子：2.005； 五年影响因子：2.154 ）
ISSN： 0936-6768
年卷期： 2018 年 53 卷 2 期
页码：
收录情况： SCI
摘要： ContentsAcipenser sinensis and Acipenser dabryanus are critically endangered species, so germplasm conservation via cryopreservation of sperm is necessary. Disaccharides can act as membrane-impermeable cryoprotectants, and enolase3 (ENO3) and plasma membrane Ca2+ ATPase isoform (PMCA2) are proteins associated with sperm quality. We considered seven characteristics of sperm quality in cultured brood stock from A.sinensis and A.dabryanus. We tested use of sucrose or trehalose alone and in combination at different concentrations for cryopreservation of A.dabryanus sperm. A low concentration of sucrose plus trehalose (S15T15) was optimal. Mixing of the extender with sucrose, lactose, or trehalose alone or with pairwise mixtures revealed that a mixture of lactose and trehalose (L15T15) gave the best results for both A.sinensis and A.dabryanus. Enolase3 and PMCA2 expression levels were measured in cryopreserved A.sinensis sperm via Western blotting. Relative ENO3 and PMCA2 expression levels were examined, and the relationship between disaccharide composition, sperm quality and protein expression was explored in A.sinensis. The results showed that relative ENO3 and PMCA2 expression levels were the highest at L15T15 in cryopreserved A.sinensis sperm. There were significant positive correlations between ENO3 expression and percentage membrane integrity, and between PMCA2 expression and sperm motility parameters (percentage of motile sperm, curvilinear velocity, straight-line velocity and average path velocity; p<.05) in cryopreserved A.sinensis sperm. Our results indicate the optimal disaccharide combination and concentrations for cryopreservation of A.sinensis and A.dabryanus sperm and suggest that ENO3 and PMCA2 expression levels could serve as a valuable indicator of sperm quality in A.sinensis.
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