摘要
国外对胎盘滋养层细胞的超微结构,已有一些研究。国内仅见研究胎盘病变对照组中地零星报道。将胎盘滋养层细胞超微结构分作胚眙早期和足月期,并认为两者区别不大。虽然国外有人注意到胎盘滋养细胞的成熟和老化现象,但观察材料仅限于8～12周,缺少妊娠全程地研究。本文对妊娠周期中胎盘滋养层细胞,作了较系统地动态观察。发现了滋养层细胞动态发展中的亚型、融合形态及动态变化的形态特征,报道如下。
Sixty-seven specimens of human placentae aged 5 to 41 weeks were collected and their trophoblastic cells studied dynamically under EM. Two kinds of cells, dark cytotrophoblasts and transitional syncytial trophoblasts were observed. Trophoblast fusion was also observed, and this phenomenon may have been related to the aggregation of syncytial cell nuclei and the formation of syncytial knots. During pregnancy, trophoblasts (especially syncytial trophoblasts) showed dynamic changes which were more prominent in the nuclei, including increased heterochromatin content and nuclear aggregation.
出处
《中国医学科学院学报》
CAS
CSCD
北大核心
1992年第2期147-150,共4页
Acta Academiae Medicinae Sinicae
