检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:樊一笋[1] 丁双双[1] 潘金兰 薛永权 胡振华[1]
机构地区:[1]上海交通大学医学院苏州九龙医院检验科,苏州215021 [2]江苏省血液研究所
出 处:《中华医学遗传学杂志》2013年第2期157-160,共4页Chinese Journal of Medical Genetics
摘 要:目的探讨4例合并继发性der(9)t(9;22)(q34;q11)inv(9)(p22q34)异常的Ph阳性白血病的临床及分子遗传学特征。方法应用骨髓细胞直接法或短期培养法制备染色体,经R显带进行核型分析。应用BCR/ABL双色双融合探针和9号染色体短臂及长臂涂染探针分别对4例伴有inv(9)(p22q34)的Ph阳性患者标本进行荧光原位杂交(fluorescence in situ hybridization,FISH)和染色体涂染分析。用逆转录PCR检测BCR/ABL融合基因转录本。结果1例急性髓细胞白血病患者核型中有3种克隆,分别为正常细胞、t(9;22)(q34;q11)异常细胞、同时合并der(9)t(9;22)衍生克隆和Ph以及其它异常,即t(8;12)(q12;p11),der(9)t(9;22)inv(9)(p22q34),der(22)t(9;22)细胞。其余3例慢性粒细胞白血病患者均同时合并Ph和der(9)t(9;22)(q34;q11)inv(9)(p22q34)。FISH结果显示,3例有1红1绿两个融合信号、2红2绿1个融合信号、且在中期分裂相中发现1红1绿荧光信号分别位于9号染色体的两端;另1例67.5%的细胞有2红1绿1融合信号,有1绿色信号的缺失即表明BCR基因的缺失。染色体涂抹检测发现4例患者均有9号染色体的倒位。逆转录PCR检测均为b3a2转录本。该继发异常既可发生于Ph阳性CML慢性期或急变期,也可发生于原发性Ph阳性AML。该异常核型可能与预后不良相关。结论合并继发性der(9)t(9;22)(q34;q11)inv(9)(p22q34)异常的Ph阳性白血病是一种少见但可再现的Ph继发性异常,具有独特的临床和分子遗传学特点。Objective To investigate clinical and molecule genetics features of four Ph-positive leukemia patients characterized by pericentric inv(9)(p22q34) with the der(9)t(9;22)(q34;q11). Methods Cytogenetic analysis was carried out on bone marrow directly or after short-period culture. R banding was used for karyotype analysis. BCR/ABL fusion gene was detected with interphase fluorescence in situ hybridization (FISH), and chromosome painting was carried out using specific probes. RT-PCR was used to detect BCR/ABL chimeric transcripts. Results One patient with acute myeloid leukemia (AML) presented three clones, which included one with a normal karyotype, one with t (9 ; 22) (q34 ; q11), and one with inv (9)(p22q34) involving the der(9)t(9;22) and additional t(8;12)(q12;p11). The inv(9)(p22q34) has always co-occurred withder(9)t(9;22)(q34;qll) accompanied by der(22)t(9;22)(q34;qll) in all metaphases from the three patients with chronic myeloid leukemia (CML). B3a2 transcript was detected in all patients by RT-PCR. Inv(9)(p22q34) was found in both CML and AML, and was associated with poor prognosis. Conclusion Inv(9) (p22q34) is a novel, rare, but recurrent secondary chromosomal abnormality for Ph-positive leukemia. Leukemia with der ( 9 ) t ( 9 ; 22 ) and inv ( 9 ) (p22q34) has unique clinical and laboratory characteristics.
关 键 词:继发性染色体异常 inv(9)(p22q34) PH阳性 白血病
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.38