IL-2-330基因多态性与慢性乙型肝炎病毒和/或丙型肝炎病毒感染及不同临床转归的关系

高秋菊; 刘殿武; 张世勇; 吴丽红; 贾敏

Abstract

高秋菊,刘殿武,张世勇,吴丽红,贾敏.IL-2-330基因多态性与慢性乙型肝炎病毒和/或丙型肝炎病毒感染及不同临床转归的关系[J].Chinese journal of Epidemiology,2010,31(9):1041-1045

IL-2-330基因多态性与慢性乙型肝炎病毒和/或丙型肝炎病毒感染及不同临床转归的关系

Relations between IL-2-330 polymorphisms and the outcome of hepatitis B and/or hepatitis C virus infection

Received:November 30, 2009

DOI：

KeyWord: 乙型肝炎病毒丙型肝炎病毒干扰素-γ 单核苷酸多态性

English Key Word: Hepatitis B virus Hepatitis C virus Cytokine Single nucleotide polymorphism

FundProject:国家自然科学基金(30972516)

Author Name	Affiliation	E-mail
GAO Qiu-ju	Department of Preventive Medicine, Bethune Military Medical College of PLA, Shijiazhuang 050081, China
LIU Dian-wu	Department of Epidemiology, Public Health College, Hebei Medical University	liudw56@tom.com
ZHANG Shi-yong	Shijiazhuang Center for Disease Control and Prevention
WU Li-hong	Department of Preventive Medicine, Bethune Military Medical College of PLA, Shijiazhuang 050081, China
JIA Min	Department of Biochemistry Detection, People's Hospital of Hebei Province

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Abstract:

目的研究乙型肝炎病毒(HBV)和/或丙型肝炎病毒(HCV)感染及其不同临床转归者IL-2基因多态性(SNP).方法对河北省赵县某农村HBV和/或HCV感染者及对照共277人采集空腹静脉血.用ELISA检测抗-HBV、抗-HCV生物标志物,筛出HBV重叠HCV感染79例、单纯HBV感染69例、HCV感染55例和对照74例.用RT-nPCR检测HCVRNA,BeckmanLX-20全自动生化仪检测肝功能丙氨酸氨基转移酶(ALT),RFLP-PCR技术检测IL-2-330 SNP,分析IL-2-T330G SNP与HBV和/或HCV感染、不同临床转归、ALT和HCVRNA表达的关系.结果 (1)不同感染类型即单纯HBV、HCV感染和重叠感染者IL-2-330 TT频率明显高于对照,-330 GG频率明显低于对照(χ2=14.24,P=0.03),OR值(95%CI)分别是7.14(2.13～23.81)、3.46(1.17～10.02)、2.93(1.15～7.46),各感染类型间差异无统计学意义(χ2=2.09,P=0.72);各感染组-330T频率明显升高,-330G频率明显降低(χ2=12.33,P=0.01),OR值(95%CI)分别是2.26(1.39～3.69)、1.82(1.09～3.03)、1.73(1.10～2.73)倍.(2)不同临床转归即轻型、中重型肝炎和肝硬化组IL-2-330 TT频率明显高于对照组、-330 GG频率明显低于对照组(χ2=13.52,P=0.04),OR值(95%CI)分别是3.33(1.75～6.32)、3.31(1.75～6.26)、11.23(3.09～40.76).不同临床转归组-330T频率明显升高,-330 G频率明显降低(χ2=12.32,P=0.01);OR值(95%CI)分别是1.86(1.32～2.63)、1.71(1.27～2.31)、2.77(1.57～4.89)倍.(3)IL-2-330基因型和等位基因频率与HCV的病毒复制无统计关联(χ2=0.83,P=0.66;χ2=0.20,P=0.66),与ALT水平亦无统计关联(χ2=1.10,P=0.58;χ2=0.08,P=0.78).结论 IL-2-330 T/G SNP与HBV和/或HCV感染者慢性化及不同临床转归有一定关联,IL-2-330TT/T能增加HBV和/或HCV感染及其临床转归的危险,-330 GG/G则减低其感染和临床转归风险.

English Abstract:

Objective To study the relationship between polymorphisms in interleukin-2gene at position-330 (IL-2-330) and the clinical outcome of hepatitis B virus (HBV) and/or hepatitis C virus (HCV) infection. Methods 277 subjects were recruited including 79 chronic HCV co-HBV infection, 55 chronic HCV infection, 69 chronic HBV infection and 74 controls. Single nucleotide polymorphisms of IL-2-330 was investigated by restricted fragment long polymorphism-PCR (RFLP-PCR). Hepatocellular injury, as revealed by alanine aminotransferase (ALT) was detected by Beckman LX-20 analyzer. The presence of hepatitis C viral particles in serum was determined by RT-nPCR. Results ( 1 ) IL-2-330 polymorphisms showed close association with persistent HBV and/or HCV infection. IL-2-330 TT was associated with an increased risk, but IL-2-330 GG with a reduced risk of persistent HBV and/or HCV infection (χ2=14.24, P=0.03 ) with ORs (95%CI) as 7.14(2.13-23.81 ), 3.46 (1.17-10.02) and 2.93 (1.15-7.46) respectively. However,IL-2-330 TT/GG did not significantly differ between patients with HBV and/or HCV infection (χ2=2.09, P=0.72). IL-2-330 T allele was associated with an increased risk, but the -330G allele was associated with a reduced risk of chronic HBV/HCV infection (χ2=12.33,P=0.01),with ORs (95% CI) as 2.26 (1.39-3.69), 1.82 ( 1.09-3.03 ) and 1.73 ( 1.10-2.73 ) respectively. (2) IL-2-330polymorphisms showed significant association with the outcome of HBV and HCV infection ( χ2=13.52, P=0.04). IL-2-330 TT was associated with an increased risk, but-330 GG with a reduced risk of mild CH, moderate/severe CH, and cirrhosis. The ORs (95%CI) appeared to be 3.33(1.75-6.32), 3.31 (1.75-6.26), 11.23 (3.09-40.76) respectively. IL-2-330 T allele was associated with an increased risk, but the -330 G allele was associated with a reduced risk of mild CH, moderate/severe CH and cirrhosis (χ2= 12.32, P=0.01 ), with ORs as 1.86(1.32-2.63), 1.71 (1.27-2.31) and 2.77(1.57-4.89) respectively. (3) The polymorphisms of IL-2-330 showed no association with HCV RNA replication (χ2=0.83, P=0.66; χ2=0.20, P=0.66). The polymorphisms of IL-2-330 were not significantly associated with abnormal ALT ( χ2= 1.10, P=0.58; χ2=0.08, P=0.78). Conclusion These results suggested that IL-2-330 TT/T was associated with an increased risk, but IL-2-330GG/G was associated with reduced risk of persistent HBV and/or HCV infection, and with the development of mild CH,moderated/severe CH,and cirrhosis.

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