蟾蜍卵母细胞发育过程中膜电位变化  

Changes in membrane potential of toad oocytes during their development

作　　者：王宏山 刘风俊 宋述请 宋薇 王羽峰[2] 

机构地区：[1]佳木斯医学院八七级生理课外实验小组 [2]佳木斯医学院生理教研室

出　　处：《佳木斯医学院学报》1991年第3期187-188,191,共3页

摘　　要：作者对发育程度不同的蟾蜍卵母细胞膜电位测定观察到直径为0.2,1.0和1.6mm的卵母细胞膜电位分别为-6.0±2.0mv(n=13),-22±3.2my(n=13),-50±4.7my(n=10);有随着胞体增大膜电位逐渐超极化的趋势;然而卵母细胞成熟后,膜电位明显去极化。诱发成熟的和自发成熟的卵母细胞膜电位分别为-30.3±3.9mv(n=8),-37±8.4my(n=9)。这些变化的确切机制仍有待于进一步探讨。The measurement of membrane potential in the toad oocyles at various developmental stages. The membrane potentials were —6.0±2.0mV(n=13), -22±3.2mV(n=13)and—50±4.7mV(n=19)for the oocytes with diameters of 0.2, 1.0 and 1.6mm respectively. An increasing hyperpolarization tendency appeared with increasing cell body. However, when oocytes had matured, the membrane potential got significantly depolarized. The membrane potential of matured oocytes, natural and induced, were -30.3±3.9mV(n=8), and —37±8.4mV(n=9)respectively. The detailed mechanisms involved for those changes are still under investigation.

关 键 词：卵母细胞 发育 膜电位 蟾蜍 

分 类 号：R714.13[医药卫生—妇产科学]