title: Comparative studies with six extenders for sperm cryopreservation in the cynomolgus monkey (Macaca fascicularis) and rhesus monkey (Macaca mulatta).
abstract: Ejaculated spermatozoa from cynomolgus monkeys and rhesus monkeys were frozen in straws with six different extenders (TTE, DM, mDM, LG-DM, G-DM, and TCG) containing glycerol. Sperm motility and head membrane and acrosomal integrity were evaluated after freezing and thawing, and the cryoprotective effects were compared among the extenders and the two species studied. The results showed that sperm motility and motility recovery with the six extenders were comparable for the cynomolgus and rhesus monkeys. There was no significant difference in sperm motility and head membrane integrity among the six extenders in either the cynomolgus or rhesus monkeys (P>0.05). However, a slightly but statistically lower percentage of acrosomal integrity was found with TCG in both species compared to the other extenders (P<0.05). These findings demonstrate that TTE, DM, mDM, LG-DM, G-DM, and TCG are equally suitable extenders for the cryopreservation of spermatozoa from cynomolgus and rhesus monkeys.
authors.affiliation: Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.
authors.forename: Yahui
authors.initials: Y
authors.lastname: Li
authors.forename: Kejun
authors.initials: K
authors.lastname: Cai
authors.forename: Jian
authors.initials: J
authors.lastname: Li
authors.forename: Andras
authors.initials: A
authors.lastname: Dinnyes
authors.forename: Weizhi
authors.initials: W
authors.lastname: Ji
mesh_terms: D000177:Acrosome / Q000187:drug effects; D000818:Animals; D015925:Cryopreservation / Q000379:methods / Q000662:veterinary*; D003451:Cryoprotective Agents / Q000494:pharmacology*; D008252:Macaca fascicularis; D008253:Macaca mulatta; D008297:Male; D012662:Semen Preservation / Q000379:methods / Q000662:veterinary*; D013081:Sperm Motility / Q000187:drug effects; D013094:Spermatozoa / Q000187:drug effects* / Q000648:ultrastructure
chemical_list: D003451:Cryoprotective Agents