Anaphase lag as the most likely mechanism for monosomy X in direct cytotrophoblasts but not in mesenchymal core cells from the same villi.

Anaphase lag as the most likely mechanism for monosomy X in direct cytotrophoblasts but not in mesenchymal core cells from the same villi.
复制标题

后期滞后是直接细胞滋养细胞中 X 单体最可能的机制,但在来自同一绒毛的间充质核心细胞中则不然。

DOI:
10.1136/jmg.27.12.780
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发表时间:
1990
影响因子:
4
通讯作者:
Elias,S
Elias,S
中科院分区:
医学1区
文献类型:
--
作者:
Qumsiyeh,MB;Tharapel,AT;Shulman,LP;Simpson,JL;Elias,S

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一名36岁的白色女性因高龄产妇而接受绒毛膜绒毛取样。绒毛的直接(细胞滋养层)制备物为45,X,但来自同一绒毛的培养的间充质核心细胞为46,XX。胚胎和胚外组织的研究表明,非整倍体仅限于特定胎盘部位的细胞滋养层细胞。总的来说,细胞遗传学研究结果可以最好地解释后期滞后在细胞滋养层的发展,这表明,这种细胞学机制,而不是不分离是负责常见的发生单体X绒毛。
A 36 year old white female was referred for chorionic villus sampling for advanced maternal age. Direct (cytotrophoblast) preparations of chorionic villi were 45,X, but cultured mesenchymal core cells from the same villi were 46,XX. Study of embryonic and extraembryonic tissues showed the aneuploidy to be limited to cytotrophoblasts from specific placental sites. In aggregate, the cytogenetic findings can best be explained by anaphase lag during development of the cytotrophoblast, suggesting that this cytological mechanism and not non-disjunction is responsible for the common occurrence of monosomy X in villi.
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