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比较基因组杂交

比较基因组杂交的相关文献在1997年到2021年内共计188篇,主要集中在肿瘤学、基础医学、妇产科学 等领域,其中期刊论文180篇、会议论文3篇、专利文献213999篇;相关期刊107种,包括国际生殖健康/计划生育杂志、中华病理学杂志、中华医学遗传学杂志等; 相关会议3种,包括2011中国遗传学会大会、第四届中国肿瘤学术大会暨第五届海峡两岸肿瘤学术会议、第三届中国肿瘤学术大会等;比较基因组杂交的相关文献由602位作者贡献,包括陈丽娟、关新元、李锋等。

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论文:180 占比:0.08%

会议论文>

论文:3 占比:0.00%

专利文献>

论文:213999 占比:99.91%

总计:214182篇

比较基因组杂交—发文趋势图

比较基因组杂交

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  • 陈丽娟
  • 关新元
  • 李锋
  • 王立东
  • 范宗民
  • 陈赛娟
  • 孙开来
  • 富伟能
  • 尚超
  • 徐振明
  • 期刊论文
  • 会议论文
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    • 刘凤洁; 涂平; 汪旸
    • 摘要: 蕈样肉芽肿是原发皮肤T细胞淋巴瘤中最常见的类型,其发病机制仍然不清楚.研究显示,蕈样肉芽肿存在高频染色体片段拷贝数变异,如染色体7q、1q、17q的扩增和9p21、10q、17p的缺失,导致相应区域上原癌基因扩增和抑癌基因丢失,从而促进肿瘤的发生发展.同时蕈样肉芽肿中存在低频单核苷酸变异,这些变异基因主要集中在细胞周期调控、细胞凋亡、染色质重塑以及T细胞活化相关的通路上.蕈样肉芽肿很少有发生基因融合变异的报道.另外,部分蕈样肉芽肿病例会发生大细胞转化,往往预示疾病进展及药物抵抗等不良预后.总之,蕈样肉芽肿是一种具有高度分子遗传学异质性的复杂疾病,未来还需要更广泛深入的机制研究.
    • 张倩; 廖世秀; 吴东; 肖海; 张秀磊; 张梦汀; 张波; 苏俊祥; 刘修铭; 李新蕊
    • 摘要: 目的 探讨微阵列比较基因组杂交(array comparative genomic hybridization,aCGH)技术对于产前诊断意外检出Duchenne肌营养不良(Duchenne muscular dystrophy,DMD)基因重复/缺失的准确性.方法 回顾性分析2018年7月至2019年12月在河南省人民医院5 025份无DMD家族史产前诊断样本中,经aCGH检出的31例DMD基因重复/缺失病例.同时使用多重连接探针扩增(multiplex ligation-dependent probe amplification,MLPA)技术对胎儿及孕妇进行验证,并参考美国医学遗传学与基因组学学会(American College of Medical Genetics and Genomics,ACMG)指南对检出DMD基因重复/缺失进行致病性分析.采用描述性方法进行分析.结果 31例(0.62%,31/5 025)DMD基因重复/缺失中,25例≤200 kb,6例>200 kb;缺失24例,重复7例;外显子重复/缺失19例,内含子重复/缺失12例.对31例变异按照ACMG五分类评分,致病性变异17例,致病不明/可能良性/良性变异14例.检出的19例外显子变异中,17例为DMD基因内部变异,2例涉及DMD基因内部及以外区域变异,经MLPA技术验证,均获得阳性结果.结论 aCGH技术检出的DMD基因外显子区域重复/缺失真实可信,对DMD诊断具有重要提示作用.对于同时涉及DMD基因内部及以外区域变异的病例,aCGH能够明确DMD基因上下游断裂点区域,为ACMG分级提供依据.
    • 佟玉龙; 潘虹; 卫凯平; 付杰; 于丽; 杨慧霞
    • 摘要: Objective To investigate the detection rate,clinical indications and pregnancy outcomes of pregnancies with prenatally diagnosed small supernumerary marker chromosome (sSMC) to provide a theoretical foundation for prenatal diagnosis and genetic counseling of sSMC.Methods This study retrospectively analyzed the clinical data of 20541 cases who underwent prenatal diagnosis at the Prenatal Diagnostic Center in the Department of Obstetrics and Gynecology in Peking University First Hospital from January 2007 to May 2018.The detection rate,diagnostic indications and pregnancy outcomes of the cases with sSMC were analyzed after cell culture and karyotyping.Array comparative genomic hybridization (aCGH) was used to analyze the origin of fetal abnormal chromosome in some cases.Results Prenatal diagnostic samples of 20486 cases were successfully cultured,among which 20 (sSMC) were detected giving an detection rate of 0.98‰,while the figures in samples obtained through chorionic villus sampling,amniocentesis and umbilical cord blood sampling were 2.20 ‰ (2/910),0.74 ‰ (14/18824) and 5.32 ‰ (4/752),respectively.Twelve cases of mosaic karyotype were also found.In gravidas for prenatal diagnosis indicated by maternal or paternal chromosomal abnormality,fetal structural anomalies on ultrasonography,adverse pregnant history,advanced maternal age and high risk of Down's syndrome,the detection rates of sSMC were 10.42 ‰ (1/96),2.65 ‰ (4/1507),1.89 ‰ (5/2 643),0.83‰ (8/9 624) and 0.49‰ (2/4013),respectively.Eleven cases were further analyzed with aCGH,four of which showed pathogenic copy number variants involving 2q11.1-q12.1,2p12-p11.1 and 2q11.1-q12.1,7q 11.21-q 11.23 and 15q11.1-q 13.3 dup1ications and terminated the pregnancies.Seven cases carried nonpathogenic marker chromosomes,of which one terminated the pregnancy,while the other six continued to fullterm with uneventful outcomes until follow-ups.Conclusions sSMC is hard to detect in prenatal diagnosis,but maternal or paternal chromosomal abnormalities,fetal structural anomalies on ultrasonography and adverse pregnancy and childbirth history are strong indications.Cytogenetics and molecular diagnosis combined can clarify the character,origin and pathogenicity of sSMC,and is of great clinical importance in prenatal genetic counseling and maternal decision making.%目的 探讨额外小标记染色体(small supernumerary marker chromosome,sSMC)在行产前诊断病例中的检出率、产前诊断指征及妊娠结局,为临床工作中sSMC的产前诊断和遗传咨询提供理论依据. 方法 回顾性分析2007年1月至2018年5月在北京大学第一医院妇产科产前诊断中心20541例行产前诊断的病例资料,统计胎儿绒毛、羊水和脐带血标本经细胞培养和染色体G显带核型分析sSMC的检出率、产前诊断指征和妊娠结局.采用微阵列比较基因组杂交技术分析部分胎儿染色体异常来源.结果 在培养成功的20486例产前诊断样本中,共检出sSMC 20例,总检出率为0.98‰;其中,绒毛膜活检、羊膜腔穿刺和经腹脐静脉穿刺标本中,sSMC检出率分别为2.20‰(2/910)、0.74‰(14/18824)和5.32‰(4/752);嵌合性核型12例.以夫妻一方染色体异常、胎儿超声结构异常、不良孕产史、孕妇高龄和唐氏综合征筛查高危为产前诊断指征的孕妇中,sSMC检出率分别为10.42‰(1/96)、2.65‰(4/ 1507)、1.89‰(5/2 643)、0.83‰(8/9 624)和0.49‰(2/4 013).11例孕妇进一步行微阵列比较基因组杂交分析,其中4例发现含有致病性基因拷贝数变异改变,分别由2q11.1-q12.1、2p12-p11.1和2q11.1-q12.1、7q11.21-q11.23、15q11.1-q13.3重复突变组成,后期均终止妊娠;7例检测为非致病性sSMC,其中1例引产,6例继续妊娠至足月分娩且妊娠结局良好,后期电话随访自述子代均未见异常. 结论sSMC在行产前诊断病例中检出率较低,但夫妻一方染色体异常、胎儿超声结构异常和不良孕产史是发生sSMC最重要的指征.细胞遗传学与分子诊断技术相结合,可以对sSMC的性质、来源和致病性进行明确诊断,在产前遗传咨询和妊娠结局选择中具有非常重要的临床意义.
    • 苏宁; 娄桂予; 王红丹; 郝冰涛; 廖世秀
    • 摘要: 目的 产前诊断1例超声异常的3q部分三体胎儿,分析其染色体异常来源及表型特征.方法 联合应用胎儿羊水细胞染色体核型分析及比较基因组杂交分析方法对胎儿进行产前诊断.抽取胎儿父母外周血行染色体核型分析.结果 产前染色体核型分析示胎儿Y染色体长臂携带未知来源的额外片段,比较基因组杂交分析提示胎儿3q22.1q29部分三体.母亲染色体核型正常,父亲染色体核型分析提示46,X,t(Y;3) (q12;q23),与外院46,XY,Y≥18结果不符.结论 3q部分三体患者可表现出多系统器官的畸形.染色体核型分析及比较基因组杂交技术联合方法可为超声异常的胎儿提供可靠产前诊断.
    • 魏彰悦; 朱丽霞; 叶琇锦
    • 摘要: Array-comparative genomic hybridization (a-CGH) technology has significant advantages in detecting abnormal gene copy number alteration (CNA),especially for prenatal diagnosis of mental retardation and multiple congenital malformations,and diagnosis of pancreatic cancer,cervical cancer,gastric cancer,lung cancer and other tumors.What's more,it also has a good application prospect in adult acute leukemia (AL).This review focuses on the application of a-CGH technology in the diagnosis,treatment and prognosis of acute lymphocytic leukemia (ALL),acute myeloid leukemia (AML),mixed phenotype acute leukemia (MPAL),and exploring drug resistance mechanisms.It will provide a new direction for further understanding of the occurrence and development of AL,as well as further research on gene targeting therapy of AL.%微阵列比较基因组杂交(a-CGH)技术在检测基因拷贝数异常(CNA)方面具有显著优势,在针对智力低下、多发性先天畸形等的产前遗传学诊断,以及胰腺肿瘤、宫颈癌、胃癌、肺癌等多种实体肿瘤的诊断中均有广泛应用,并且在成年人急性白血病(AL)中亦有着良好应用前景.笔者拟就a-CGH技术应用于急性淋巴细胞白血病(ALL)、急性髓细胞白血病(AML)及混合表型急性白血病(MPAL)的诊断、治疗、预后及耐药机制研究的进展进行综述,旨在为进一步认识AL的发生、发展过程,以及为更深入研究AL的基因靶向治疗提供新方向.
    • 冯战启; 胡和平; 毛长青; 王定占; 刘磊; 刘石岭; 景治安; 刘红彦
    • 摘要: 目的 对一例5q35缺失综合征胎儿进行产前诊断,探讨G显带联合微阵列比较基因组杂交技术(array comparative genomic hybridization,aCGH)在产前诊断超声异常胎儿中的应用价值.方法 应用常规G显带分析胎儿及其父母的染色体核型,应用aCGH技术分析胎儿及其父母的DNA拷贝数变异(copy number variations,CNVs)并对核型分析结果进行精确定位.结果 胎儿父母外周血染色体核型分析及aCGH分析结果均未见异常,胎儿核型为46,XY,t(5;10)(q35;p13);aCGH检测发现胎儿5号染色体存在1.68 Mb的新发缺失,缺失区位于5q35.2q35.3,为5号染色体长臂缺失综合征,10号染色体存在1.44 Mb的染色体重复,重复区位于10p14p13.结论 aCGH技术具有更高的分辨率和准确性,是G显带核型分析的有益补充,可应用于临床分子细胞遗传诊断,特别是对缺失或者重复片段较小的非平衡易位患者的诊断中.%Objective To use combined G-banding and array-comparative genomic hybridization (aCGH) for the prenatal diagnosis of a fetus with 5q35 deletion syndrome.Methods Chromosomal karotypes of the fetus and parents were analyzed with C-banding analysis.aCGH was performed to detect minor chromosomal structural abnormalities.Results The karyotype of the fetus was ascertained as 46,XY,t(5;10) (q35;p13),and the karyotypes of the parents were normal.aCGH has identified a de novo 1.68 Mb deletion at 5q35.2q35.3 and a 1.44 Mb duplication at 10p14p13.Conclusion aCGH has a higher resolution and greater accuracy for mapping chromosomal aberrations and is a useful supplement for G banding karyptyping analysis.
    • 沈鉴东; 吴畏; 舒黎; 蔡令波; 谢佳孜; 马龙; 孙雪萍; 崔毓桂; 刘嘉茵
    • 摘要: Objective To evaluate the efficiency of the application of array comparative genomic hybridization (array-CGH) in preimplantation genetic diagnosis or screening (PGD/PGS), and compare the clinical outcomes of different stage embryo biopsy. Methods The outcomes of 381 PGD/PGS cycles referred in the First Affiliated Hospital of Nanjing Medical University from July 2011 to August 2015 were retrospectively analyzed. There were 320 PGD cycles with 156 cleavage-stage-biopsy cycles and 164 trophectoderm-biopsy cycles, 61 PGS cycles with 23 cleavage-stage-biopsy cycles and 38 trophectoderm-biopsy cycles.Chromosomal analysis was performed by array-CGH technology combined with whole genome amplification.Single embryo transfer was performed in all transfer cycles.Live birth rate was calculated as the main clinical outcomes. Results The embryo diagnosis rate of PGD/PGS by array-CGH were 96.9%-99.1%. In PGD biopsy cycles, the live birth rate per embryo transfer cycle and live birth rate per embryo biopsy cycle were 50.0%(58/116) and 37.2%(58/156) in cleavage-stage-biopsy group, 67.5%(85/126) and 51.8%(85/164) in trophectoderm-biopsy group (both P0.05). Conclusions High diagnosis rate and idea live birth rate are achieved in PGD/PGS cycles based on array-CGH technology.The live birth rate of trophectoderm-biopsy group is significantly higher than that of cleavage-stage-biopsy group in PGD cycles;the efficiency of trophectoderm-biopsy is better.%目的 探讨微阵列比较基因组杂交(array-CGH)技术在胚胎植入前遗传学诊断或胚胎植入前遗传学筛查(PGD/PGS)中的应用效果及不同胚胎阶段活检的临床结局的差异.方法 回顾性分析2011年7月至2015年8月在南京医科大学第一附属医院进行PGD/PGS治疗的381个周期,其中, PGD 320个周期,采用卵裂期活检156个周期、囊胚期活检164个周期;PGS 61个周期,采用卵裂期活检23个周期、囊胚期活检38个周期.活检标本采用单细胞全基因组扩增结合array-CGH技术行染色体拷贝数分析.所有移植周期均采用单胚胎移植,以活产率作为主要临床结局的评价指标.结果array-CGH技术在PGD/PGS中的明确诊断胚胎比例达96.9%~99.1%.PGD活检周期中,卵裂期活检的每移植周期活产率和每活检周期活产率分别为50.0%(58/116)、37.2%(58/156),而囊胚期活检者分别为67.5%(85/126)、51.8%(85/164),分别比较,差异均有统计学意义(P均0.05).结论 array-CGH技术在PGD/PGS中的应用具有高诊断率,基于array-CGH技术的PGD/PGS可获得理想的临床活产率.在PGD周期中,囊胚期活检比卵裂期活检具有更高的活产率.
    • 摘要: 安捷伦科技公司于3月9日宣布推出首款用于诊断的比较基因组杂交(CGH)微阵列芯片——GenetiSure Dx产后微阵列芯片。采用这一微阵列芯片能比用传统方法更早、更准确地检测出与儿童和成人发育迟缓、智力障碍、自闭症、先天性畸形和畸形体征有关的遗传异常,从而将医学研究的重心由寻找病因快速转换到给予适当医疗与家庭支持。
    • 刘玉鹏; 秦炯
    • 摘要: 人类正常细胞核中有22对常染色体与1对性染色体,但一些人细胞核内另有多余的常染色体片段,被称为编外标记染色体(small supernumerary marker chromosome,sSMC).sSMC属于染色体结构异常,因其片段太小,并缺少明显的显带模式,无法通过传统的细胞遗传学显带技术进行识别,需要采用芯片比较基因组杂交或荧光原位杂交等多种分子生物学诊断方法才能确诊.由sSMC导致的染色体异常综合征较多,常见为Pallister-Killian综合征、等臂18p染色体综合征、猫眼综合征、Emanuel综合征.智力障碍人群中sSMC中发生率较高,临床缺乏特异性表现,随着分子细胞遗传学分析技术的提高,sSMC的识别率逐步提高.遗传咨询及产前诊断是减少sSMC发生的重要措施,分子生物学技术是明确sSMC的必要方法.现就sSMC相关18p染色体异常综合征的核型特点、发病机制、临床表现等进行综述.%Humans typically have 22 pairs of autosomal chromosomes in cells,and a pair of sex chromosomes.Some individuals have an extra,autosomal chromosome called a small supernumerary marker chromosome (sSMC).sSMC is a structurally abnormal chromosome fragment.The fragments are too small and no-specific banding pattern to be identified by conventional banding cytogenetic analysis.Array-based comparative genomic hybridization (aCGH),fluorescence in situ hybridization (FISH) or other molecular biological methods are necessary for the diagnosis.This article summarized the karyotype,pathogenesis,and the clinical manifestations of the sSMC-related chromosome 18p abnormalities.The patients with sSMC usually presented with abnormal chromosome syndrome.Some syndromes are relative common,such as Pallister-Killian syndrome,isochromosome 18p syndrome,Cat eye syndromes or Emanuel syndrome.sSMC is considered to be the frequent cause of mental retardation.The patients have no specific symptoms.With the progress of molecular cytogenetics,more sSMC has been identified.Genetic counseling and prenatal diagnosis are important to prevent sSMC.Molecular cytogenetic techniques are necessary to the diagnosis.
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