目的基于染色体拷贝数变异测序(copy number variation sequencing,CNV-seq)技术对1953例自然流产物进行遗传学检测,探讨流产组织染色体数目异常和拷贝数变异(copy number variation,CNV)在自然流产中的发生情况。方法回顾性统计分析201...目的基于染色体拷贝数变异测序(copy number variation sequencing,CNV-seq)技术对1953例自然流产物进行遗传学检测,探讨流产组织染色体数目异常和拷贝数变异(copy number variation,CNV)在自然流产中的发生情况。方法回顾性统计分析2014年3月至2019年11月送检并行CNV-seq检测的1953例自然流产组织染色体变异分析结果。结果①1953例流产组织样本中,1013例存在染色体异常,异常率为51.87%,其中以染色体非整倍体最常见,共有870例,发生率为44.55%(870/1953),占异常核型的85.88%(870/1013),涉及除1号染色体外的所有染色体,以16-三体发生频率最高,其次为22-三体、X单体15-三体和21-三体。②本次研究发现孕妇年龄≥35岁组胚胎染色体异常率明显高于年龄<35岁组(56.57%vs.42.17%,P<0.05);早期自然流产(孕周<12周)的胚胎染色体异常率明显高于中晚期自然流产(58.76%vs.23.21%,P<0.01);而产妇既往流产次数与胚胎染色体的异常率无统计学意义(P>0.05)。结论胚胎染色体异常,尤其染色体非整倍体异常,是自然流产的主要原因,多发于孕早期,且随着孕妇年龄增长,胚胎染色体异常发生率显著升高。展开更多
DNA sequencing is the method of identifying the precise order of DNA nucleotides within a molecule. The information of DNA sequencing is of prime requisite for basic biological research as well as in various clinical ...DNA sequencing is the method of identifying the precise order of DNA nucleotides within a molecule. The information of DNA sequencing is of prime requisite for basic biological research as well as in various clinical specialties.They can be used to determine the individual genetic sequence, larger genetic regions, chromosomes as well as to sequence RNA and proteins. Since the first DNA sequencing in 1970s, there has been tremendous advancements in the technologies aimed to determine the entire human genome. The need for rapid and accurate sequencing of human genome has resulted in the introduction of next generation sequencing(NGS) technology. NGS refers to the secondgeneration DNA sequencing technologies where millions of DNA can be sequenced simultaneously. Some of the next gen sequencing methods employed are Roche/454 life science, Illumina/Solexa, SOLiD system and HeliScope.Application of NGS in decoding the genomic database of various oral diseases may possess therapeutic and prognostic value. This presentation provides an overview of the basics of NGS and their potential applications in oral disease diagnostics.展开更多
文摘目的基于染色体拷贝数变异测序(copy number variation sequencing,CNV-seq)技术对1953例自然流产物进行遗传学检测,探讨流产组织染色体数目异常和拷贝数变异(copy number variation,CNV)在自然流产中的发生情况。方法回顾性统计分析2014年3月至2019年11月送检并行CNV-seq检测的1953例自然流产组织染色体变异分析结果。结果①1953例流产组织样本中,1013例存在染色体异常,异常率为51.87%,其中以染色体非整倍体最常见,共有870例,发生率为44.55%(870/1953),占异常核型的85.88%(870/1013),涉及除1号染色体外的所有染色体,以16-三体发生频率最高,其次为22-三体、X单体15-三体和21-三体。②本次研究发现孕妇年龄≥35岁组胚胎染色体异常率明显高于年龄<35岁组(56.57%vs.42.17%,P<0.05);早期自然流产(孕周<12周)的胚胎染色体异常率明显高于中晚期自然流产(58.76%vs.23.21%,P<0.01);而产妇既往流产次数与胚胎染色体的异常率无统计学意义(P>0.05)。结论胚胎染色体异常,尤其染色体非整倍体异常,是自然流产的主要原因,多发于孕早期,且随着孕妇年龄增长,胚胎染色体异常发生率显著升高。
文摘DNA sequencing is the method of identifying the precise order of DNA nucleotides within a molecule. The information of DNA sequencing is of prime requisite for basic biological research as well as in various clinical specialties.They can be used to determine the individual genetic sequence, larger genetic regions, chromosomes as well as to sequence RNA and proteins. Since the first DNA sequencing in 1970s, there has been tremendous advancements in the technologies aimed to determine the entire human genome. The need for rapid and accurate sequencing of human genome has resulted in the introduction of next generation sequencing(NGS) technology. NGS refers to the secondgeneration DNA sequencing technologies where millions of DNA can be sequenced simultaneously. Some of the next gen sequencing methods employed are Roche/454 life science, Illumina/Solexa, SOLiD system and HeliScope.Application of NGS in decoding the genomic database of various oral diseases may possess therapeutic and prognostic value. This presentation provides an overview of the basics of NGS and their potential applications in oral disease diagnostics.
