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乙肝病毒感染者 HBV DNA 携带状况的诊断研究
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作者 高晓虹 张翠莉 +2 位作者 张莹 何雅慧 梅华 《大连医科大学学报》 CAS 1998年第2期20-22,共3页
应用PCR-银染技术检测乙肝感染者血清中的乙型肝炎病毒去氧核糖核酸(HBVDNA),并与PCR-溴化乙锭(EB)法进行了比较分析,结果表明:PCR-银染法具有较理想的灵敏度和特异度,且具有快速、简便易行、经济实用及安... 应用PCR-银染技术检测乙肝感染者血清中的乙型肝炎病毒去氧核糖核酸(HBVDNA),并与PCR-溴化乙锭(EB)法进行了比较分析,结果表明:PCR-银染法具有较理想的灵敏度和特异度,且具有快速、简便易行、经济实用及安全无毒等特点。共检测了208份血清样品,包括献血员和急慢性肝炎、肝硬化、重症肝炎、肝癌病人及携带者。HBVDNA总检出率:PCR-EB法为293%,PCR银染法为582%,差异非常显著(P<001)。此外,通过进一步对两种方法HBVDNA检出率与血清学指标关系的探讨,发现PCR-银染法在乙肝血清学指标全阴性的职业献血员中仍能检出HBV携带者,而PCR-EB法则不能。此外,在e抗体阳性,单项核心抗体阳性及表面抗原与表面抗体同时阳性者中检测HBVDNA显著优于PCR-EB法。研究表明。 展开更多
关键词 pcr-银染 乙型肝炎 HBVDNA EB 诊断
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Detection of p53 gene mutations in sputum samples and their implications in the early diagnosis of lung cancer in suspicious patients 被引量:2
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作者 汪斌超 李龙芸 +2 位作者 姚连昌 刘丽华 朱元珏 《Chinese Medical Journal》 SCIE CAS CSCD 2001年第7期22-25,103,共5页
Objectives To evaluate the value of detecting p53 gene point mutations in sputum samples and its validity and reliability as a surveillance index in the early diagnosis of lung cancer in suspicious patients.Methods Sp... Objectives To evaluate the value of detecting p53 gene point mutations in sputum samples and its validity and reliability as a surveillance index in the early diagnosis of lung cancer in suspicious patients.Methods Sputum samples were collected from 54 cases identified as lung cancer and 114 cases identified as pulmonary benign disease. The polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) was performed for the detection of point mutations at exons 5-8 of the p53 gene, and sputum smears were also used for each sample. Conclusion Detection of p53 gene alterations in sputum samples by PCR-SSCP-silver stain can be used as a follow-up surveillance index for the early diagnosis of lung cancer in suspicious patients. 展开更多
关键词 lung neoplasms · p53 gene · diagnosis · PCR SSCP silver stain
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