Oxygen tension in the oviduct and uterus of rhesus monkeys, hamsters and rabbits

摘要: Oxygen tension was measured using flexible polarographic microelectrodes within the oviductal and uterine lumen in rhesus monkeys (n = 9), golden hamsters 21) rabbits 6), during reproductive cycle (monkey), oestrus pseudopregnancy (hamsters, rabbits) pregnancy (hamsters). In general, oxygen tensions each species were much less than half of atmospheric O2, ranging from high values about 60 mm Hg (8.7% O2) rabbit oviduct, hamster uterus, to as low 11 (1.5% monkey uterus. did not vary significantly between left right sides tracts (all species), nor pregnant pseudopregnant states oviduct uterus Differences owing stage found consistently very (11-14 Hg) throughout menstrual cycle. rabbits, intrauterine O2 decreased at normal time blastocyst formation implantation, 37 (5.3% 24 (3.5% O2), respectively. This study indicates that embryos develop vivo under concentrations, especially peri-implantation period. The data have implications for investigations embryo metabolism improving development vitro.