Mosaic or chimera? Revisiting an old hypothesis about the cause of the 46,XX/46,XY hermaphrodite

Dau Ming Niu, Chin Chen Pan, Ching Yuan Lin, Be Tau Hwang, Ming Yi Chung*

*此作品的通信作者

研究成果: Article同行評審

26 引文 斯高帕斯(Scopus)

摘要

Objectives: A cell lineage in a hermaphrodite infant showing a 46,XX/46,XY karyotype was analyzed to determine the genetic contribution from both parents and identify the underlying mechanism. Study design: Genotype analysis was performed by using 57 microsatellite markers, 39 distributed on 9 autosomes and 18 on the X-chromosome. Two X- and Y-specific markers were analyzed to confirm the presence and percentages of cells containing a Y-chromosome. Results: The proband revealed a single maternal and paternal allele for all of the informative autosomal and X-chromosome markers. Analysis of the X and Y-specific markers confirmed that ∼20% of the patient's peripheral blood cells contained the Y chromosome. Conclusions: The data suggest that the patient's hermaphroditism was the result of a mosaic embryo and not a chimera. The most likely mechanism involved 2 separate nondisjunction events, resulting in the loss of 47,XXY cells during early embryonic development.

原文English
頁(從 - 到)732-735
頁數4
期刊Journal of Pediatrics
140
發行號6
DOIs
出版狀態Published - 2002

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