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核型45,X/46,XY的Turner综合征患者的发病机理 被引量:13

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摘要 目的探讨核型为45,X/46,XY的Turner综合征患者的发病机理。方法应用细胞遗传学G显带、C显带技术确定核型,进一步用荧光原位杂交技术证实;再应用PCR技术对2例患者进行性别决定基因(sex-determining region of the Y, SRY)扩增,并将扩增产物在ABI-377测序仪上测序。结果病例1的染色体核型为45,X/46,X,del(Y);病例2的染色体核型为45,X/46,XY,荧光原位杂交技术也证实了X染色体和Y染色体同时存在;2例患者SRY基因扩增均为阳性,并且2例SRY阳性的患者DNA序列分析均未检测到突变。结论Turner综合症患者的病因不单纯只由性染色体异常导致,可能与SRY以外的性别决定基因的突变或调节失常有关。
出处 《中华医学遗传学杂志》 CAS CSCD 北大核心 2008年第1期112-114,共3页 Chinese Journal of Medical Genetics
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