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t(11;22)(q23;q11)复发性染色体平衡易位——4例病案报道及文献复习 被引量:1

Recurrent chromosomal translocation of t(11;22)(q23;q11):4 case report and literature review
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摘要 目的:初步探讨非罗伯逊型复发性t(11;22)(q23;q11)染色体平衡易位的发生机制。方法:外周血染色体核型分析检测有不孕不育或不良生育史的4例患者的染色体核型。结果:4例t(11;22)(q23;q11)易位患者,染色体断裂位点一致,患者间无亲缘关系,均有不良生育史,其中2例女性表现为反复流产,2例男性患者表现为精子数目减少和活力下降的。结论:t(11;22)(q23;q11)是一种较为少见的非罗伯逊易位型复发性平衡易位,对t(11;22)(q23;q11)深入研究有助于进一步完善染色体畸变的理论基础。 Objective: To discuss the mechanism of recurrent non-Robertsonian balanced chromosomal translocation oft(11 ;22)(q23;q11). Methods: Chromosome karyotype for peripheral blood was performed on patients with infertility or abnormal pregnancy histories. Results: Four unrelated patients were shown to carry t(11 ;22)(q23; q11) translocation with almost identical breakpoints. The two females presented with repeated abortions and the two males had low level of sperm count and activities. Conclusion: t(11 ;22)(q23 ;q11) is a less common type of recurrent non-Robertsonian balanced translocation. Intensive studies of t(11 ;22)(q23 ;q11) are helpful to further improve and complete our knowledge in understanding the theoretical basis of chromosomal aberrations.
出处 《生殖与避孕》 CAS CSCD 北大核心 2015年第11期776-780,共5页 Reproduction and Contraception
关键词 复发性染色体易位 富含AT碱基的回文重复序列 染色体核型分析 recurrent chromosomal translocation palindromic AT-rich repeats chromosome karyotype
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  • 1Edelmann L, Spiteri E, Koren K, et al. AT-rich palindromes mediate the constitutional t(11 ;22) translocation. Am J Hum Genet, 2001, 68(1):1-13.
  • 2Tapia-Paez I, Kost-Alimova M, Hu P, et al. The position of t(11 ;22)(q23;ql 1) constitutional translocation breakpoint is conserved among its carriers. Hum Genet, 2001, 109(2): 167- 77.
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