SRY (sex-determining region Y chromosome) is considered as a strong candidste for the TDF (testis determining factor) and has been cloned following another candidate ZFY (zinc finger protein gene). In this study,eight...SRY (sex-determining region Y chromosome) is considered as a strong candidste for the TDF (testis determining factor) and has been cloned following another candidate ZFY (zinc finger protein gene). In this study,eight cases of sex revelsal, including four 46, XX males and four 46, XY females aere examined for the presence of SRY sequence and a Y-repeated DNA locus. Our data indicated that the genownic DNA of the four classical 46,XX males had the SRY sequences. On the other hand, both SRY sequences and Ye repeated DNA sequences were present in all four 46, XY females.These resultssuavest that SAY sequences were responsible for the sexraversal of 46, XX males Whereas there may be other genetic mechanisms forthe sex reversal of 46, XY females Without the lack of SRY sequences.展开更多
目的:探讨性反转综合征(sex reversal syndrome,SRS)的发病原因。方法:应用聚合酶链式反应(PCR)及PCR产物直接测序方法对22例性发育异常患者的人类性别决定区域(sex-determining region of Y chromosome,SRY)基因进行特异性扩增和序列...目的:探讨性反转综合征(sex reversal syndrome,SRS)的发病原因。方法:应用聚合酶链式反应(PCR)及PCR产物直接测序方法对22例性发育异常患者的人类性别决定区域(sex-determining region of Y chromosome,SRY)基因进行特异性扩增和序列检测分析。结果:在22例患者中有7例患者SRY基因检测结果与染色体性别不一致,其中3例为46,XX女性性反转患者的SRY基因为阳性(其中1例46,XX,Gp+),3例为46,XY男性性反转患者的SRY缺失,1例为45,X女性患者的SRY基因阳性;其他15例患者SRY基因与染色体性别一致,但都伴有不同程度的性发育异常,即存在Y染色体患者,SRY为阳性;无Y染色体的患者,SRY为阴性。通过对12例SRY阳性患者进行测序分析,均未发现碱基突变。结论:SRY基因的缺失或易位是导致SRS的最主要原因,同时也表明人类的性别决定和分化还有其他相关基因参与。展开更多
目的研究性反转综合征的发生与性别决定基因SRY(sex-determining region on the Y chromosome)之间的关系。方法应用聚合酶链反应(polymerase-chain reaction,PCR)对2例46,XX男性性反转及1例46,XY女性性反转患者进行SRY扩增,并将扩增产...目的研究性反转综合征的发生与性别决定基因SRY(sex-determining region on the Y chromosome)之间的关系。方法应用聚合酶链反应(polymerase-chain reaction,PCR)对2例46,XX男性性反转及1例46,XY女性性反转患者进行SRY扩增,并将扩增产物在ABI-377测序仪上测序。结果2例46,XX男性性反转患者SRY检测1例阳性,1例阴性。46,XY女性性反转患者SRY阳性,2个SRY阳性病例DNA序列分析均未检测到突变。结论SRY是性别决定和分化的重要基因,SRY阴性XX男性性反转及SRY阳性但无突变的XY女性性反转的发生,可能与其它性别分化相关基因的异常有关。展开更多
文摘SRY (sex-determining region Y chromosome) is considered as a strong candidste for the TDF (testis determining factor) and has been cloned following another candidate ZFY (zinc finger protein gene). In this study,eight cases of sex revelsal, including four 46, XX males and four 46, XY females aere examined for the presence of SRY sequence and a Y-repeated DNA locus. Our data indicated that the genownic DNA of the four classical 46,XX males had the SRY sequences. On the other hand, both SRY sequences and Ye repeated DNA sequences were present in all four 46, XY females.These resultssuavest that SAY sequences were responsible for the sexraversal of 46, XX males Whereas there may be other genetic mechanisms forthe sex reversal of 46, XY females Without the lack of SRY sequences.
文摘目的:探讨性反转综合征(sex reversal syndrome,SRS)的发病原因。方法:应用聚合酶链式反应(PCR)及PCR产物直接测序方法对22例性发育异常患者的人类性别决定区域(sex-determining region of Y chromosome,SRY)基因进行特异性扩增和序列检测分析。结果:在22例患者中有7例患者SRY基因检测结果与染色体性别不一致,其中3例为46,XX女性性反转患者的SRY基因为阳性(其中1例46,XX,Gp+),3例为46,XY男性性反转患者的SRY缺失,1例为45,X女性患者的SRY基因阳性;其他15例患者SRY基因与染色体性别一致,但都伴有不同程度的性发育异常,即存在Y染色体患者,SRY为阳性;无Y染色体的患者,SRY为阴性。通过对12例SRY阳性患者进行测序分析,均未发现碱基突变。结论:SRY基因的缺失或易位是导致SRS的最主要原因,同时也表明人类的性别决定和分化还有其他相关基因参与。
文摘目的研究性反转综合征的发生与性别决定基因SRY(sex-determining region on the Y chromosome)之间的关系。方法应用聚合酶链反应(polymerase-chain reaction,PCR)对2例46,XX男性性反转及1例46,XY女性性反转患者进行SRY扩增,并将扩增产物在ABI-377测序仪上测序。结果2例46,XX男性性反转患者SRY检测1例阳性,1例阴性。46,XY女性性反转患者SRY阳性,2个SRY阳性病例DNA序列分析均未检测到突变。结论SRY是性别决定和分化的重要基因,SRY阴性XX男性性反转及SRY阳性但无突变的XY女性性反转的发生,可能与其它性别分化相关基因的异常有关。