小鼠卵巢移植到去势公鼠背部肌肉后的生长发育

Development of mouse ovaries in the back muscle of castrated male mice

将12日龄小鼠卵巢移植到8～10周龄去势雄性小鼠的背部肌肉中,分别于移植后7、26和40d观察移植体周围血管再生状况,分离并观察移植体上的卵泡和卵母细胞发育情况,并观察移植体的组织学结构及变化。结果发现:卵巢移植后7d,卵巢內大量卵泡发生退行性变化,卵泡数量骤减;移植后26d,移植体周围有明显的血管发生,移植体直径增加到1908μm,极显著大于12日龄小鼠卵巢(P<0.01),移植体边缘可见到各阶段的卵泡,卵巢的皮质和髓质界限模糊;移植后40d,移植体直径增加到2739μm,极显著大于12日龄小鼠卵巢(P<0.01),有明显的卵泡,从移植体中分离得到卵丘卵母细胞复合体(COCs)和卵母细胞,形态基本正常。提示:成年去势雄性小鼠背部肌肉组织环境可支持同种异性移植的小鼠卵巢上卵泡和卵母细胞进一步生长发育。

Ovarian transplantation is not only a method to investigate the follicle development,but also a possible model to develop a sexual reversion of male-to-female.The present study was to study the ovarian survival and follicle development after the young mouse ovaries were transplanted into the castrated male mouse back muscle.After mouse ovaries at 12 day-old were transplanted into the back muscle of castrated male mice at 810 weeks old,the follicle and oocyte developmental status was checked at different tim...