Abstract:
AIM:To define the common deleted region on the long arm of haman chromosome 7q linked to primary gastric carcinomas in Chinese by loss of heterozygosity (LOH) and its clinical significance. METHODS:Nine microsatellite markers distributed over chromosome 7q with an average marker density of 10cM were used to examine 70 primary gastric carcinomas for LOH by PCR amplification. The PCR products were separated by electrophoresis on polyacrylamide gel. Genescan and Genotyper softwares were used to analyze LOH. RESULTS:LOH with at least one marker on 7q occurred in 34.3% (12/50) of the tumors. Among them, LOH at D7S486 and D7S798 was higher in 24.0% (24/70) and 19.2% (5/26), respectively. By statistical analysis we also observed an obvious genotype-phenotype correlation on 7q (P<0.05). The frequency of LOH at D7S486 in patients with lymph node metastasis was significantly higher than that in those without lymph node metastasis (P=0.015). CONCLUSION:The high incidence of LOH at D7S486 and its correlation with poorer prognosis suggest that there might be putative tumor suppressor genes in this region involved in the tumorigenesis and progression of gastric carcinoma.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Weng DS,Li JT,Mai SJ,Pan ZZ,Feng BJ,Feng QS,Huang LX,Wang QJ,Li YQ,Yu XJ,Chen SP,He J,Xia JCdoi
10.3748/wjg.v12.i15.2437subject
Has Abstractpub_date
2006-04-21 00:00:00pages
2437-40issue
15eissn
1007-9327issn
2219-2840journal_volume
12pub_type
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journal_title:World journal of gastroenterology
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pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 临床试验,杂志文章,多中心研究
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pub_type: 杂志文章
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pub_type: 杂志文章,meta分析,评审
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pub_type: 杂志文章,评审
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journal_title:World journal of gastroenterology
pub_type: 杂志文章,评审
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