摘要
目的研究细胞毒T淋巴细胞相关抗原4(CTLA-4)基因外显子1的49位点A/G和启动子-318位点C/T多态性与溃疡性结肠炎(UC)的相关性.方法采用序列特异性引物聚合酶链反应(PCR-SSP)方法,检测82例中国湖北汉族溃疡性结肠炎患者(UC)以及204例健康对照者CTLA-4基因外显子1的49位点A/G和启动子-318位点C/T的基因型和单倍型.结果UC患者CTLA-4 A+49G和C-318T基因型与正常对照组间差异无统计学意义(P＞0.05),且与性别无关.在单倍型分析中,UC患者CTLA-4单倍型2,3(C-318-G49/T-318-A49)显著低于正常人群(26%比41%,P＜0.05,OR=0.4918,95%CI:0.2784～0.8688).结论UC患者CTLA-4基因A+49G和C-318T单倍型2,3与UC呈负相关.
Objective To investigate the association of gene polymorphism of cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) with ulcerative colitis (UC) in Chinese patients. Methods The A+49G transition polymorphism at position 49 (exon 1) and C-318T transition polymorphism at position -318 in promoter of the CTLA-4 gene were determined by polymerase chain reaction with sequence specific primers (PCR-SSP) method in 82 Chinese patients with UC and 204 healthy controls of Han nationality. Results No significant differences in the distribution of genotype and allele frequencies were observed between CTLA-4 C-318T and A+49G gene polymorphisms in UC patients and normal controls. How- ever , comparing with healthy subjects,the frequency of haplotype 2,3 (C -318 -G 49 /T -318 -A 49 ) in UC patients was significantly reduced (26% vs 41%, P <0.05, OR =0.4918, 95% CI : 0.2784-0.8688). There was no gender differences of the haplotype 2,3 in UC patients. Conclusion CTLA-4 gene C-318T and A+49G haplotype 2,3 were negatively correlated with occurence of UC in Chinese patients.
出处
《中华消化杂志》
CAS
CSCD
北大核心
2005年第4期199-201,共3页
Chinese Journal of Digestion
基金
国家自然科学基金资助项目(30070350)
