摘要
目的 研究小细胞肺癌 (Smallcelllungcancer ,SCLC)患者血浆游离性DNA的 3p位点的杂合性缺失 (Lossofheteroxygosity ,LOH)在SCLC诊断中的价值。方法 用PCR 银染法对 3 3例SCLC患者的病理组织及血浆标本中三个位点微卫星 ( 3p14、3p2 1、3p2 5 )杂合性缺失的情况。结果 3 3例病理组织标本LOH的发生率为 5 4.5 % ( 18 3 3 ) ,血浆游离DNA同时发生LOH的百分率为 42 .4% ( 14 3 3 ) ;二者相关性为 77.8% ( 14 18)。结论 SCLC患者血浆游离DNA来自于肿瘤组织 ,其 3p部位的LOH在诊断中有一定的价值。
Objective To study the diagnostic and monitoring values of the loss of heteroxygosity(LOH) of 3p loci in free plasma DNA of small cell lung cancer. Methods PCR silver staining was used for the detection of LOH of three microsatellite sites in the 3p loci of plasma free DNA and tissue of SCLC. Results In 33 cases of tissue, the incidence rate of LOH was 54.5%(18/33), but the positive rate of LOH in plasma free DNA was 42.4%(14/33). The correlation between them was 78.8%(14/18). Conclusion The plasma free DNA in patients with lung cancer is primarily originated from the tumor tissue. LOH of plasma free DNA may be valuable molecular markers in the diagnosis of SCLC.
出处
《第三军医大学学报》
CAS
CSCD
北大核心
2003年第4期341-343,共3页
Journal of Third Military Medical University
基金
第三军医大学校管基金资助项目 (X98- 0 2 )
