Objective: To develop a molecular screening test for genetic defects on hearing loss related genes has significant impacts on early identification of hereditary hearing loss and genetic susceptibility to aminoglycosid...Objective: To develop a molecular screening test for genetic defects on hearing loss related genes has significant impacts on early identification of hereditary hearing loss and genetic susceptibility to aminoglycoside ototoxicity. Early identification of pre-lingual hearing loss is very important for patient’s language development, academic achievement, and social skill. Two common mutations, the 235delC in GJB2 gene and the mutation A1555G in mitochondrial DNA, are included in the newly developed screening panel for Chinese population. Methods: A molecular genetic assay, based on fluorescent labeled multiplex PCR and automatic DNA fragment analyzing techniques, was developed to detect both mutations simultaneously. Results: This assay was able to detect both mutations from patient’s samples, and pooled DNA tests, as well as suitable to detect mutation from the DNA extracted from dried blood spot and buccal swab. Conclusion: This assay could be a useful tool for newborn screening and carrier screening for the hereditary hearing loss for the Chinese population.展开更多
目的探讨中国西南地区智力低下人群中脆性X综合征(fragile X syndrome,FXS)发病率。方法通过一种可检测脆性X智力低下基因1(fragile X mental retardation 1,FMR1)上CGG重复序列长度的聚合酶链反应方法,对中国西南一城市智力低下人群进...目的探讨中国西南地区智力低下人群中脆性X综合征(fragile X syndrome,FXS)发病率。方法通过一种可检测脆性X智力低下基因1(fragile X mental retardation 1,FMR1)上CGG重复序列长度的聚合酶链反应方法,对中国西南一城市智力低下人群进行脆性X综合征的筛查,探讨智力低下人群中脆性X综合征的发病率。结果研究样本发现,频率最高的CGG重复数是29个CGG重复,其次为30和31个CGG重复,再其次为36和37个CGG重复;CGG等位基因频率分布形式与中国其它地区的研究结果一致;但没有发现前突变和全突变病人。结论中国西南地区智力低下人群中脆性X综合征发病率可能低于华中及华北地区的报道人群。展开更多
文摘Objective: To develop a molecular screening test for genetic defects on hearing loss related genes has significant impacts on early identification of hereditary hearing loss and genetic susceptibility to aminoglycoside ototoxicity. Early identification of pre-lingual hearing loss is very important for patient’s language development, academic achievement, and social skill. Two common mutations, the 235delC in GJB2 gene and the mutation A1555G in mitochondrial DNA, are included in the newly developed screening panel for Chinese population. Methods: A molecular genetic assay, based on fluorescent labeled multiplex PCR and automatic DNA fragment analyzing techniques, was developed to detect both mutations simultaneously. Results: This assay was able to detect both mutations from patient’s samples, and pooled DNA tests, as well as suitable to detect mutation from the DNA extracted from dried blood spot and buccal swab. Conclusion: This assay could be a useful tool for newborn screening and carrier screening for the hereditary hearing loss for the Chinese population.
文摘目的探讨中国西南地区智力低下人群中脆性X综合征(fragile X syndrome,FXS)发病率。方法通过一种可检测脆性X智力低下基因1(fragile X mental retardation 1,FMR1)上CGG重复序列长度的聚合酶链反应方法,对中国西南一城市智力低下人群进行脆性X综合征的筛查,探讨智力低下人群中脆性X综合征的发病率。结果研究样本发现,频率最高的CGG重复数是29个CGG重复,其次为30和31个CGG重复,再其次为36和37个CGG重复;CGG等位基因频率分布形式与中国其它地区的研究结果一致;但没有发现前突变和全突变病人。结论中国西南地区智力低下人群中脆性X综合征发病率可能低于华中及华北地区的报道人群。
