15 500例新生儿脐带血染色体核型分析 |
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作者姓名: | 唐敬龙 王丽媛 冯雪花 饶伟强 周红 杨晓丹 张燕 杜晓雪 张贵玲 程东方 鲍艳丽 吴莉莉 |
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作者单位: | 1. 250002 济南艾迪康医学检验中心生殖遗传实验室2. 250001 济南,山东中医药大学第二附属医院肿瘤科 |
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基金项目: | 河北省科技计划项目(13272504D) |
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摘 要: | 目的研究新生儿脐带血中染色体异常的发生率,并对脐带血染色体数目与结构异常及染色体多态性进行综合分析。 方法对新生儿脐带血进行收集,进行淋巴细胞培养,常规G显带,行染色体核型分析。 结果在培养成功的15 500例脐带血标本中,检出异常核型314例,在人群中的发生率为2.03%;其中染色体倒位患儿220例,发生率1.42%,构成比70.10%;染体易位患儿41例,发生率0.26%,构成比13.00%;染色体衍生患儿14例,发生率0.09%,构成比4.51%;21-三体患儿12例,发生率0.08%,构成比3.80%;D-G组易位患儿11例,发生率0.08%,构成比3.50%;性染色体异常中47,XXX患儿5例,47,XXY患儿7例,45,X患儿4例,发生率0.10%,构成比5.10%。染色体多态性检出317例,其发生率为2.04%。其他各组与倒位组发生率及构成比比较,均差异有统计学意义(χ2=11.53,15.98;P<0.05);而易位、衍生、21-三体、D-G组易位及性染色体异常等发生率比较,差异无统计学意义(P>0.05),各组异常自然发生率比较接近。 结论新生儿脐带血染色体核型分析,对目前产前诊断不足具有很好的补充意义,对二级预防、再生育及临床指导有重要意义。
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关 键 词: | 婴儿,新生 胎血 核型分析 染色体畸变 |
收稿时间: | 2016-05-05 |
Karyotype analysis of umbilical blood in 15 500 newborns |
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Authors: | Jinglong Tang Liyuan Wang Xuehua Feng Weiqiang Rao Hong Zhou Xiaodan Yang Yan Zhang Xiaoxue Du Guiling Zhang Dongfang Cheng Yanli Bao Lili Wu |
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Institution: | 1. Department of Reproductive Genetics Laboratory, Adicon Clinical Laboratories, Jinan 250002, China2. Department of Oncology, Second Affiliated Hospital of Shandong Traditional Chinese Medicine University, Jinan 250001, China |
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Abstract: | ObjectiveTo study the incidence of chromosomal abnormalities in the umbilical cord blood, and analyze the number and structure and chromosome poly-morphism of the cord blood. MethodsUmbilical cord blood was collected for lymphocyte culture, conventional G-banding and karyotype analysis. Results15 500 cases of umbilical cord blood samples were detected, of which 314 cases were abnormal karyotypes, the rate was 2.03%.Chromosomal inversions of children were 220, the percentage in population was 1.42%, the constituent ratio was 70.10%.Chromosomal translocations samples were 41, the percentage in population was 0.26%, the constituent ratio was 13.00%.Chromosome-derived samples were 14, the percentage in population was 0.09%, the constituent ratio was 4.51%.Children with 21-Down Syndrome samples were 12, the percentage in population was 0.08%, the constituent ratio was 3.80%.Children with displaced robertson were 11, the percentage in population was 0.08%, the constituent ratio was 3.50%.In sex chromosome abnormalities, 47, XXX were 5, 47, XXY were 7, 45, X were 4, the percentage in population was 0.10%, the constituent ratio was 5.10%.Children with chromosomal polymorphism were 317, the percentage in population was 2.04%.Compared with the other groups, the chromosomal inversions group′ proportion and constituent ratio were significantly different (χ2=11.53, 15.98; P<0.05). The differences among translocateon, chromosome-derived, 21-Down Syndrome, D-G group and sex chromosome abnormal incidence were not significant (P>0.05), the incidence of abnormal natural of each group was closer. ConclusionsKaryotype analysis of neonatal umbilical cord blood is a very useful to the insufficient prenatal diagnosis, and important for secondary prevention, fertility and clinical guidlines. |
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Keywords: | Infant newborn Fetal blood Karyotyping Chromosome aberrations |
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