摘要
目的:
探讨山东省乙肝病毒基因型的分布情况及其与慢性乙型肝炎α-干扰素抗病毒治疗应答的相关性。
方法:
1.研究对象 249例慢性HBV-DNA阳性者均为我院2002年2月至2003年10月门诊和住院病人,男186例,女63例,平均年龄33.8±14.6岁,其中无症状携带者(ASC)53例,慢性肝炎(CAH)126例,肝硬化(LC)38例,重型肝炎(FHF)32例,所有病例和对照均为山东地区的华人汉族人,诊断均符合2000年全国病毒性肝炎会议制定的标准。通过适当的临床和实验室方法排除所有引起慢性肝病的其他因素,如HCV感染、自身免疫性肝炎、酒精性肝炎和代谢失调。所有病例均无抑郁症病史、免疫缺陷病毒感染、应用干扰素史、化疗或其他可影响治疗结果的试剂、甲状腺功能异常等。
α-干扰素治疗组包括126例慢性乙型肝炎患者(男性94例,女性32例,平均年龄:33.2±13.3岁)。
2.血清学检验 血清用来检测肝功能、乙肝五项病毒学指标(HBsAg、抗-HBs、HBeAg、抗-HBe、抗-HBe)及HBV-DNA,剩余血清在-70℃保存备用。
3.HBV基因分型HBV-DNA应用直接煮沸法从200μL血清样本中提取,用巢式PCR扩增,引物均参考文献。第一轮PCR在一含40 μL反应缓冲液的试管中进行,包含4μL HBV-DNA,4μL 10×buffer,4μL浓度为15mM的MgCl2,4μL浓度为10mM的dNTPs,0.2μL浓度为5U/μL的Taq聚合酶,浓度为12.5μg/
Aims:To investigate the distribution of HBV genotypes in Shandong Province and influence of HBV genotypes on response to interferon- α therapy in chronic hepatitis B. Methods:1. SubjectsHBV genotypes were determined by the nested-PCR analysis using type-specific primers in 249 randomly selected HBV-DNA positive patients, including 53 asymptomatic HBV carriers(ASC), 126 chronic active hepatitis(CAH)(including mild、 moderate and severe hepatitis), 38 liver cirrhosis(LC),and 32 fulminant hepatic failure(FHF) in Shandong area. All the patients were Chinese Han people from Shandong area. The diagnosis of all the cases was made according to the criteria established on the Viral Hepatitis Conference held in 2000. All causes of chronic liver disease other than HBV, such as HCV infection, auto-immune hepatitis and metabolic disorders, were excluded by appropriate clinical and laboratory evaluations. They did not have a history of malignancy or depression, immunodeficiency virus infection, prior use of IFN- α preparation, chemotherapy, or other agents that could influence treatment outcomes, or thyroid abnormality in which normal thyroid function could not be maintained by medication.2. Serological testsSera were tested for ALT, HBeAg, anti-HBeAg, as well as HBV-DNA. The remaining sera were stored at -70 ℃. 3.Genotyping of HBV
The nucleic acid of HBV was extracted from 200μl serum samples by heating in one hundred degrees for ten minutes and the HBV genome was amplified by nested PCR using universal primers for the outer primers, followed by two different mixtures containing type-specific inner primers. The first PCR was carried out in a tube containing 40μl of a reaction buffer made up of the following components: 4μl of HBV-DNA, 4 μl of 10xbuffer, 4μl of MgC12(15 mM), 4μl of dNTPs(10 mM), 0.2μl of Taq polymerase (5U/μl, 4μl of each outer primer(12.5μg/ml), and 15.8μl of demonized H2O. The thermocycler was programmed to first incubate the samples for 2 min at 94 ℃, followed by 35 cycles: 94℃ for 15sec, 58℃ for 30sec, 72℃ for 30sec, and final extension at 72 ℃ for 7min. Two second-round PCRs were performed for each sample, with the common universal antisense primer for mixA which is for types A through C, and the common universal antisense primer for mixB which is for types D through F. 2μl of the first PCR product was added to two tubes containing the second sets of each of the inner primer pairs, each of the deoxynucleotides, Taq polymerase and PCR buffer, as in the first reaction. These were amplified with the following parameters: preheating at 94℃ for 2min, then followed by 35 cycles: 94℃ for 15sec, 60℃ for 30sec ,72 ℃ for 30sec, and final extension at 72 ℃ for 7min.PCR products were separately electrophoresed on a 2% agarose gel, stained with ethidium bromide, and evaluated under ultraviolet light. The sizes of PCR products were estimated according to the pUC19 DNA/MspI(HpaII) Marker, 23.4. Antiviral therapyThe 126 patients were administered treatment subcutaneously at a dose of 3 MU three times weekly for 24 weeks. The response to IFN- α therapy was defined as loss of HBeAg, seroconversion to anti-HBe and normalization of serum ALT levels and HBV-DNA(-).The patients with a response are described as "responders" and the other patients as "non-responders" in this report.5. Statistical analysisData were analyzed using SPSS version 10.0 software package. Categorical variables were compared by Chi-square test. Continuous data were compared by Student's t-test. Tendency test were used to analyse the correlation between ages and
HBeAg positivities. Statistical significance was taken as P < 0.05. ResultsOf the 249 patients 84(33.7%) were genotype B, 124(49.8%) were genotype C, and 41(16.5%) were mixed genotype B + C, no genotypes D, E, F was found. Genotype C and genotype B were the major genotypes in this area. There was a statistical significance in the distribution of genotype B between active liver diseases and ASC(P<0.05). HBV-DNA and ALT level were higher in group genotype C than that in group genotype B(P<0.01, respectively).The HBeAg positivity was significant(P<0.01) among the three groups,but was of no significance(P>0.05) between males and females among the three groups. The rate of HBeAg positivity in genotype C group was higher than that in other two groups(P<0.01).The prevalence of HBeAg gradually decreased with age in patients with all groups.There was no statistical significance in age and gender among the three groups. ALT level of genotype B group was lower than that of genotype C group(P<0.01).There was significant difference in HBV-DNA level among the three groups(P<0.01).Response was significantly better in patients with genotype B infections(50%) than in patients with genotype C (13.0%) and genotype B+C(26.3%)(P < 0.005). Response was higher in females than in males(P<0.01), and the patients with higherALT level(≥200IU/L) had a higher response than those with lower ALT level(P < 0.05), the higher HBV-DNA level(>105copies/ml) had a lower response to antiviral than lower level(P < 0.05). DiscussionOur study indicate that genotype B 、 genotype C and genotype B+C exist in Shandong area .Genotype C was the major genotype and was associated with the development of severe liver diseases. Genotype B was associated with ASC.There was no correlation between gender age and genotypes.Genotype B was associated with response to IFN-α therapy. These data indicate that HBV genotyping
may have prognostic relevance in the response to r-IFN- α therapy in patients with chronic HBV infection. HBV genotype C was associated with lower response to interferon- α therapy than genotype B. Patients with HBV genotype C had a significantly lower rate of antiviral response to IFN- α , only 13% versus 50% among patients with genotype B and 26.3% with genotype B+C(x2=17.3, p<0.005) .Females, lower HBV-DNA level、 higher ALT level and genotype B were all important predictive factors of higher response to antiviral therapy. Thus,early analysis of the factors above before antiviral therapy was important for selection of cases and judgement of progonosis in patients with chronic HBV infection.
引文
1. Merican I, Guan R, Amarapukaa D, et al. Chronic hepatitis B virus infection in Asian countries. J Gastroenterol Hepatol, 2000, 15: 1356-1361
2. Kao JH, Chen PJ, Lai MY, Chen DS. Genotypes and clinical phenotypes of hepatitis B virus in patients with chronic hepatitis B virus infection. J Clin Microbiol 2002; 40: 1207-1209
3. Kao JH, Chen PJ, Lai MY, Chen DS. Hepatitis B genotypes correlate with clinical outcomes in patients with chronic hepatitis B. Gastroenterology 2000; 118: 554-559
4. Kao JH. Hepatitis B viral genotypes: clinical relevance and molecular characteristics. J Gastroenterol Hepatol 2002; 17: 643-650
5. Tsubota A, Arase Y, Ren F, Tanaka H, Ikeda K, Kumada H. Genotype may correlate with liver carcinogenesis and tumor characteristics in cirrhotic patients infected with hepatitis B virus subtype adw. J Med Virol 2001; 65: 257-265
6. Courouce-Pauty AM, Lemaire JM,Roux JR New hepatitis B surface antigen sbutypes inside the adcategory. Vox Sang 1978; 35: 304-308.
7. Okamoto H, Tsuda F, Sakugawa H, Sastrosoewignjo RI, Imai M, Miyakawa Y, Mayumi M. Typing hepatitis B virus by homology in nucleotide sequence: comparison of surface antigen subtypes. J Gen Virol 1988; 69: 2575-2583
8. Norder H, Courouce AM, Magnius LO. Complete genomes, phylogenetic relatedness, and structural proteins of six strains of the hepatitis B virus, four of which represent two new genotypes. Virology 1994; 198: 489-503
9. Stuyver L, De Gendt S, Van Geyt C, Zoulim F, Fried M, Schinazi RF, Rossau R. A new genotype of hepatitis B virus: complete genome and phylogenetic relatedness. J Gen Virol 2000; 81: 67-74
10. Arauz-Ruiz P, Norder H, Robertson BH, Magnius LO. Genotype H: a new Amerindian genotype of hepatitis B virus revealed in Central America. J Gen Virol 2002; 83: 2059-2073
11. Naito H, Hayashi S, and Abe K. Rapid and Specific Genotyping System for Hepatitis B Virus Corresponding to Six Major Genotypes by PCR Using Type-Specific Primers. J of Clinical Microbiology 2001; 39: 362-364
12. Norder, H., Hammas, B., Lofdahl, S., Courouce, A. M. & Magnius, L. O. Comparison of the amino acid sequences of nine different serotypes of hepatitis B surface antigen and genomic classification of the corresponding hepatitis B virus strains. Journal of General Virology 1992; 73: 1201-1208
13. Stuyver, L., De Gendt, S., Van Geyt, C., Zoulim, F., Fried, M., Schinazi, R. F. & Rossau, R. A new genotype of hepatitis B virus: complete genome and phylogenetic relatedness. Journal of General Virology 2000; 81: 67-74
14. Lindh M, Gonzalez JE, Norkrans G, et al. Genotyping of hepatitis B virus by restriction pattern analysis of a pre-S amplicon. J Virol Methods 1998; 72: 163-174
15. Mizokami M, Nakano T, Orito E, et al. Hepatitis B virus morphism patterns. FEBS Lett 1999; 450(1): 66-71
16. Swenson PD, Van Geyt C, Alexander ER, et al. Hepatitis B virus genotypes and HbsAg subtypes in refugees and injection drug users in the United States determined by LiPA and monoclonal EIA. J Med Virol 2001; 64(3): 305-311
17.王虹,万成松,王省良,等。采用PCR微板核酸杂交-ELISA技术进行HBVDNA基因分型的研究。中华微生物学和免疫学杂志,2001,21:234—236
18. Usuda S, Okamoto H, et al. Serological detection of hepatitis B virus genotypes by ELISA with monoclonal antibodies to type-specific epitopes in the preS2-region product. J Virol Methods, 1999, 80(1): 97-112
19. Usuda S, Okamoto H, Tanaka T, et al. Differentiation of hepatitis B virus genotypes D and E by ELISA using monoclonal antibodies to epitopes on the preS2-region product. J Virol Methods, 2000, 87(1-2): 81-89
20. Natio H, Hayashi S, Abe K. Rapid and specific genotyping system for hepatitis B virus corresponding to six major genotypes by PCR using type-specific primers. J Clin Microbiol, 2001; 39(1): 362-364
21. Norder, H., Hammas, B., Lee, S. D., Bile, K., Courouce, A. M., Mushahwar, I. K. & Magnius, L. O. Genetic relatedness of hepatitis B viral strains of diverse geographical origin and natural variations in the primary structure of the surface antigen. Journal of General Virology 1993; 74:1341-1348
22. Kidd-Ljunggren, K., Oberg, M. & Kidd, A. H. The hepatitis B virus X gene: analysis of functional domain variation and gene phylogeny using multiple sequences. Journal of General Virology 1995; 76: 2119-2130
23. Lok, A., Akarca, U. & Greene, S. Mutations in the pre-core region of the hepatitis B virus serve to enhance the stability of the secondary structure of the pre-genome encapsidation signal. Proceedings of the National Academy of Sciences, USA 1994; 91: 4077-4081
24. Bowyer, S. M., van Staden, L., Kew, M. C. & Sim, J. G. A unique segment of the hepatitis B virus group A genotype identified in isolates from South Africa. Journal of General Virology 1997; 78: 1719-1729
25. Theamboonlers, A., Jantaradsamee, P., Kaew-In, N., Tangkijvanich, P., Hirsch, P. & Poovorawan, Y. The predominant genotypes of hepatitis B virus in Thailand. Annals of Tropical Medicine and Parasitology 1999; 93:737-743
26. Orito, E., Ichida, T., Sakugawa, H., Sata, M., Horiike, N., Hino, K., Okita, K., Okanoue, T., Iino, S., Tanaka, E., Suzuki, K., Watanabe, H., Hige, S. & Mizokami, M. Geographic distribution of hepatitis B virus (HBV) genotype in patients with chronic HBV infection in Japan. Hepatology 2001; 34:590-594
27. Gust, I. The epidemiology of viral hepatitis. In Viral Hepatitis and Liver Disease 1984; pp.415-421. Edited by G. N. Vyas. Orlando, FL:Grune and Stratton
28. Borchani-Chabchoub, I., Gargouri, A. & Mokdad-Gargouri, R. Genotyping of Tunisian hepatitis B virus isolates based on the sequencing of preS2 and S regions. Microbes and Infection 2000; 2: 607-612
29. Kidd-Ljunggren, K. & Simonsen, O. Reappearance of hepatitis B 10 years after kidney transplantation. New England Journal of Medicine 1999; 341:127-128
30. Blackberg, J. & Kidd-Ljunggren, K. Occult hepatitis B virus after acute self-limited infection persisting for 30 years without sequence variation. Journal of Hepatology 2000; 33:992-997
31. Blackberg, J., Braconier, J. H., Widell, A. & Kidd-Ljunggren, K. Long-term outcome of acute hepatitis B and C in an outbreak of hepatitis in 1969-72. European Journal of Clinical Microbiology & Infectious Diseases 2000; 19:21-26
32. Flodgren, E., Bengtsson, S., Knutsson, M., Strebkova, E. A., Kidd, A. H., Alexeyev, O. A. & Kidd-Ljunggren, K. Recent high incidence of fulminant hepatitis in Samara, Russia: molecular analysis of prevailing hepatitis B and D virus strains. Journal of Clinical Microbiology 2000; 38:3311-3316
33. Odemuyiwa, S. O., Mulders, M. N., Oyedele, O. I., Ola, S. O., Odaibo, G. N., Olaleye, D. O. & Muller, C. R Phylogenetic analysis of new hepatitis B virus isolates from Nigeria supports endemicity of genotype E in West Africa. Journal of Medical Virology 2001; 65: 463-469
34. Norder, H., Courouce, A. M. & Magnius, L. O. Complete nucleotide sequences of six hepatitis B viral genomes encoding the surface antigen subtypes ayw4, adw4q-, and adrq- and their phylogenetic classification. Archives of Virology Supplement 1993; 8:189-199
35. Arauz-Ruiz, R, Norder, H., Visona, K. A. & Magnius, L. O. Genotype F prevails in HBV infected patients of hispanic origin in Central America and may carry the precore stop mutant. Journal of Medical Virology 1997; 51:305-312
36. Arauz-Ruiz, R, Norder, H., Visona, K. A. & Magnius, L. O. Molecular epidemiology of hepatitis B virus in Central America reflected in the genetic variability of the small S gene. Journal of Infectious Diseases 1997b; 176:851-858
37. Blitz L.,Pujol F. H.,Swenson R D.,Porto L., Atencio R., Araujo M., Costa L., Monsalve D. C, Torres J. R., Fields H. A., Lambert S., Van Geyt C, Norder H., Magnius L. O., Echevarria J. M. & Stuyver, L. Antigenic diversity of hepatitis B virus strains of genotype F in Amerindians and other population groups from Venezuela. Journal of Clinical Microbiology 1998; 36: 648-651
38. Mbayed, V. A., Lopez, J. L., Telenta, P. F., Palacios, G., Badia, I., Ferro, A., Galoppo, C. & Campos, R. Distribution of hepatitis B virus genotypes in two different pediatric populations from Argentina. Journal of Clinical Microbiology 1998; 36:3362-3365
39. Nakano, T., Lu, L., Hu, X., Mizokami, M., Orito, E., Shapiro, C, Hadler, S. & Robertson, B. Characterization of hepatitis B virus genotypes among Yucpa Indians in Venezuela. Journal of General Virology 2001; 82: 359-365
40. Kato, H., Orito, E., Sugauchi, F., Ueda, R., Gish, R. G., Usuda, S., Miyakawa, Y. & Mizokami, M. Determination of hepatitis B virus genotype G by polymerase chain reaction with hemi-nested primers. Journal of Virological Methods 2001; 98: 153-159
41. Koibuchi, T., Hitani, A., Nakamura, T., Nojiri, N., Nakajima, K., Jyuji, T. & Iwamoto, A. Predominance of genotype A HBV in an HBV-HIV-1 dually positive population compared with an HIV-1-negative counterpart in Japan. Journal of Medical Virology 2001; 64: 435-440
42.朱冰,骆抗先,胡族琼,等。乙型肝炎病毒分型方法的建立及应用。中华实验和临床病毒学杂志,1999;13:109-113
43. Orito E, Mizokami M, Sakugawa H, et al. A case-control study for clinical and molecular biological differences between hepatitis B viruses of genotypes B and C. Japan HBV Genotype Research Group. Hepatology, 2001; 33: 218-223
44. Kidd AH, Kidd-Ljunggren K. A revised secondary structure model for the 3'-end of hepatitis B virus pregenomic RNA. Nucleic Acids Res. 1996 Sep 1; 24(17): 3295-3301
45. Li J, Buckwold VE, Hon MW, Ou JH. Mechanism of suppression of hepatitis B virus precore RNA transcription by a frequent double mutation. J Virol 1999 Feb; 73(2): 1239-1244
46. Takahashi K, Ohta Y, Kanai K, Akahane Y, lwasa Y, Hino K, Ohno N, Yoshizawa H, Mishiro S. Clinical implications of mutations C-to-T1653 and T-to-C/A/G1753 of hepatitis B virus genotype C genome in chronic liver disease. Arch Virol 1999; 144(7): 1299-308
47. Lin CL, Liao LY, Liu C J, Chen P J, Lai MY, Kao JH, Chen DS. Hepatitis B genotypes and precore/basal core promoter mutants in HBeAg-negative chronic hepatitis B. J Gastroenterol. 2002; 37(4): 283-287
48. Ding X, Mizokami M, Yao G, Xu B, Orito E, Ueda R, Nakanishi M. Hepatitis B virus genotype distribution among chronic hepatitis B virus carriers in Shanghai, China. Intervirology. 2001; 44(1): 43-7
49. Kao JH, Wu NH, Chen PJ, Lai MY and Chen DS: Hepatitis B genotypes and the response to interferon therapy. J Hepatol 2000; 33: 998-1002
50. Chu CJ, Hussain M, Lok AS. Hepatitis B virus genotype B is associated with earlier HBeAg seroconversion compared with hepatitis B virus genotype C. Gastroenterology 2002; 122(7):1756-1762
51. Ishikawa K, Koyama T, Masuda T. Prevalence of HBV genotypes in asymptomatic carrier residents and their clinical characteristics during long-term follow-up: the relevance to changes in the HBeAg/anti-HBe system. Hepatol Res 2002; 24(l):l-5
52. Thakur V, Guptan RC, Kazim SN, Malhotra V, Sarin SK. Profile, spectrum and significance of HBV genotypes in chronic liver disease patients in the Indian subcontinent. J Gastroenterol Hepatol 2002; 17(2): 165-170
53. Devarbhavi HC, Cohen AJ, Patel R, Wiesner RH, Dickson RC, Ishitani MB. Preliminary results: outcome of liver transplantation for hepatitis B vims varies by hepatitis B virus genotype. Liver Transpl 2002;8(6):550-555
54. Sakai T,Shiraki K,Inoue H,Okano H,Deguchi M,Sugimoto K, Ohmori S, Murata K, Nakano T. Efficacy of long-term interferon therapy in chronic hepatitis B patients with HBV genotype C. International J Molecular Med 2002; 10:201-204
55. Hoofnagle JH and Di Bisceglie AM: The treatment of chronic viral hepatitis. N Engl J Med 1997; 336:347-356
56. Zhang X, Zoulim F, Habersetzer F, Xiong S, Trepo C. Analysis of hepatitis B virus genotypes and pre-core region variability during interferon treatment of HBe antigen negative chronic hepatitis B. J Med Virol 1996; 48:8-16
57. Wai CT, Chu CJ, Hussain M, Lok AS. HBV genotype B is associated with better response to interferon therapy in HBeAg(+) chronic hepatitis than genotype C. Hepatology 2002;36(6):1425-1430
58. Friedt M, Gerner P, Lausch E, Trubel H, Zabel B, Wirth S.Mutations in the basic core promotor and the precore region of hepatitis B virus and their selection in children with fulminant and chronic hepatitis B. Hepatology 1999; 29(4):1252-1258
59. Lee WM. Hepatitis B virus infection. N Engl J Med 1997; 11:733-45.
60.中华医学会传染病与寄生虫病学会、肝病分会。病毒性肝炎防治方案。中华传染病杂志,2001,19(1):56
61. Thyagrajan SP, Jayaram S, Hari R, Mohan KVK, Murugavel KG. Epidemiology of hepatitis B in India- A comprehensive analysis. In: Sarin SK, ed. Hepatitis B and C-Carrier to Cancer, firsted. Harcourt India Private Limited 2002: 25-39
62. Moradpour D, Blum HE. Hepatitis B carrier: Definition and diagnosis. In: Satin SK, Ed. Hepatitis B and C-Carrier to Cancer, first ed. Harcourt India Private Limited 2002: 3-8
63. Thio CL, Thomas DL, Carrington M. Chronic viral hepatitis and the human genome. Hepatology 2000; 31: 819-827
64. Du YP, Deng CS, Lu DY, et al. The relation between HLA-DQA1 genes and genetic susceptibility to duodenal ulcer in Wuhan Hans. World J Gastroentero 2000; 6(1): 107-110
65. Iino S. Natural history of hepatitis B and C virus infections. Oncology 2002; 62(Suppl 1): 18-23
66. Kwiatkowski D. Genetic dissection of the molecular pathogenesis of severe infection. Intensive Carc Med 2000; 26(Suppl 1): 89-97
67. Weatherall D, Clegg J, Kwiatkowski D. The role of genomics in studying genetic susceptibility to infectious disease. Genome Research 1997; 7: 967-973
68. Powell EE, Edwards-Smith CJ, Hay JL, Clouston AD, Crawford DH, Shorthouse C, Purdie DM, Jonsson JR. Host genetic factors influence disease progression in chronic hepatitis C. Hepatology 2000; 31: 828-833
69. Hohler T, Gerken G, Notghi A, Lubjuhn R, Taheri H, Protzer U, Lohr HF, Schneider PM, Meyer zum Buschenfelde KH, Rittner C. HLA-DRBI 1301 and 1302 protect against chronic hepatitis B. J Hepatol 1997; 26: 503-507
70. Gu CH, Luo KX. Hepatitis B: Basic biology and clinical science. Second edition. Beijing, People Medical Publishing House 2001: 1-6
71. Luo KX. Hepatitis B: Basic biology and clinical science. Second edition. Beijing, People's Medical Publishing House 2001: 56-70
72. Hoffmann SC, Stanley EM, Cox ED, DiMercurio BS, Koziol DE, Harlan DM, Kirk AD, Blair PJ. Ethnicity greatly influences cytokine gene polymorphism distribution. Am J Transplant 2002; 2: 560-567
73. Knolle PA, Kremp S, Hohler T, Krummenauer F, Schirmacher P, Gerken G. Viral and host factors in the prediction of response to interferon-alpha therapy in chronic hepatitis C after long-term follow-up. J Viral Hepat 1998; 5:399-406
74. Abel L, Dessein AJ. Genetic epidemiology of infectious diseases in humans: design of population-based studies. Emerg Infect Dis 1998; 4: 593-603
75. Westendorp RG, Langermans JA, Huizinga TW, Verweij CL, Sturk A. Genetic influence on cytokine production in meningococcal disease. Lancet 1997; 349: 1912-1913
76. an Deventer SJ. Cytokine and cytokine receptor polymorphisms in infectious disease. Intensive Care Med 2000; 26 (Suppl 1):98-102
77. Fiorentino DF, Zlotnik A, Vieira P, Mosmann TR, Howard M, Moore KW, Oarra A. IL-10 acts on the antigen-presenting cell to inhibit cytokine production by Th1 cells. J Immunol 1991; 146: 3444-3451
78. Knight JC, Kwiatkowski D. Inherited variability of tumor necrosis factor production and susceptibility to infectious disease. Proc Assoc Am Physicians 1999; 111:290-298
79. Hajeer AH, Hutchinson IV. TNF-alpha gene polymorphism: clinical and biological implications. Microsc Res Tech 2000; 50: 216-228
80. Higuchi T, Seki N, Kamizono S, Yamada A, Kimura A, Kato H, Itoh K. Polymorphism of the 5?flanking region of the human tumor necrosis factor (TNF)-alpha gene in Japanese. Tissue Antigens 1998; 51: 605-612
81. Miyazoe S, Hamasaki K, Nakata K, Kajiya Y, Kitajima K, Nakao K, Daikoku M, Yatsuhashi H, Koga M, Yano M, Eguchi K. Influence of interleukin-10 gene promoter polymorphisms on disease progression in patients chronically infected with hepatitis B virus. Am J Gastroenterol 2002; 97: 2086-2092
82. Hohler T, Kruger A, Gerken G, Schneider PM, Meyer zum Buschenefelde KH, Rittner C. A tumor necrosis factor-alpha (TNF-alpha) promoter polymorphism is associated with chronic hepatitis B infection. Clin Exp Immunol 1998; 111: 579-582
83. Hohler T, Kruger A, Gerken G, Schneider PM, Meyer zum Buschenfelde KH, Rittner C. Tumor necrosis factor alpha promoter polymorphism at position -238 is associated with chronic active hepatitis C infection. J Med Virol 1998; 54: 173-177
84. Hill AV. The immunogenetics of human infectious diseases. Annu Rev Immunol 1998; 16:593-617
85. Edwards-Smith CJ, Jonsson JR, Purdie DM, Bansal A, Shorthouse C, Powell EE. Interleukin-10 promoter polymorphism predicts initial response of chronic hepatitis C to interferon alfa. Hepatology 1999; 30: 526-530
86. Thomas HC, Foster GR, Sumiya M, McIntosh D, Jack DL, Turner MW, Summerfield JA. Mutation of gene of mannose-binding protein associated with chronic hepatitis B viral infection. Lancet 1996; 348: 1417-1419
87. Yuen MF, Lau CS, Lau YL, Wong WM, Cheng CC, Lai CL. Mannose binding lectin gene mutations are associated with progression of liver disease in clironic hepatitis B infection. Hepatology 1999; 29: 1248-1251
88. Hohler T, Wunschel M, Gerken G, Schneider PM, Meyer zum Buschenfelde KH, Rittner C. No association between mannose-binding lectin alleles and susceptibility to chronic hepatitis B Virus infection in german patients. Exp Clin Immunogenet 1998; 15: 130-133
89. Bellamy R, Hill AV. Genetic susceptibility to mycobacteria and other infectious pathogens in humans. Curr Opin Lmmunol 1998; 10: 483-487
90. Griffiths PD. Interactions between viral and human genes. Rev Med Virol 2002; 12: 197-199
91. Almarri A, Batchelor JR. HLA and hepatitis B infection. Lancet 1999; 344: 1194-1195
92. Thursz MR, Kwiatkowski D, Allsopp CE, Greenwood BM, Thomas HC, Hill AV. Association between an MHC class II allele and clearance of hepatitis B virus in the Gambia. N Engl J Med 1995 20;332(l 6): 1065-1069
93. Caillat-Zucman S, Gimenez JJ, Wambergue F, Albouze G, Lebkiri B, Naret C, Moynot A, Jungers P, Bach JF. Distinct HLA class II alleles determine antibody response to vaccination with hepatitis B surface antigen. Kidney Int 1998; 53(6):1626-1230
94. Diepolder HM, Jung MC, Keller E, Schraut W, Gerlach JT, Gruner N, Zachoval R, Hoffmann RM, Schirren CA, Scholz S, Pape GR. A vigorous virus-specific CD4+ T cell response may contribute to the association of HLA-DR13 with viral clearance in hepatitis B. Clin Exp Immunol 1998; 113: 244-251
95. Winchester R, Chen Y, Rose S, Selby J, Borkowsky W. Major histocompatibility complex class II DR alleles DRB1*1501 and those encoding HLA-DR13 are preferentially associated with a diminution in maternally transmitted human immunodeficiency virus 1 infection in different ethnic groups: determination by an automated sequence-based typing method. Proc Natl Acad Sci U S A. 1995; 92(26): 12374-1238
96. Apple RJ, Erlich HA, Klitz W, Manos MM, Becker TM, Wheeler CM. HLA DR-DQ associations with cervical carcinoma show papillomavirus-type specificity. Nat Genet 1994;6(2):157-162
97. Hill AV, Allsopp CE, Kwiatkowski D, Anstey NM, Twumasi P, Rowe PA, Bennett S, Brewster D, McMichael AJ, Greenwood BM. Common west African HLA antigens are associated with protection from severe malaria. Nature 1991; 352(6336):595-600
98. Cotrina M, Buti M, Jardi R, Rodriguez-Frias F, Campins M, Esteban R, Guardia J. Study of HLA-II antigens in chronic hepatitis C and B and in acute hepatitis B. Gastroenterol Hepatol 1997 ;20(3):115-118
99. Zavaglia C, Bortolon C, Ferrioli G, Rho A, Mondazzi L, Bottelli R, Ghessi A, Gelosa F, Iamoni G, Ideo G. HLA typing in chronic type B, D and C hepatitis. J Hepatol 1996; 24: 658-665
100.Meng XQ, Chen HG, Ma YL, Liu KZ. Influence of HLA class II molecules on the outcome of hepatitis B virus infection in population of Zhejiang Province in China. Hepatobiliary Pancreat Dis Int. 2003;2(2):230-233
101.Cheng YQ, Lin JS, Huang LH, Tian DY, Xiong P. The association of HLA-DRB1 allele polymorphism with the genetic susceptibility to liver cirrhosis due to hepatitis B virus. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2003; 20(3): 247-249
102. Jiang YG, Wang YM, Liu TH, Liu J. Association between HLA class Ⅱ gene and susceptibility or resistance to chronic hepatitis B. World J Gastroenterol 2003; 9: 2221-2225
103.沈晶晶,冀英,关晓蕾,黄若君,孙逸平.HLA-DRB1~*10与中国人慢性乙肝关联.中华微生物学和免疫学杂志,1999;19:58—59
104. Amarapurpar DN, Patel ND, Kankonkar SR. HLA class Ⅱ genotyping in chronic hepatitis B infection. J Assoc Physicians India 2003; 51: 779-781
105. Wu YF, Wang LY, Lee TD, Lin HH, Hu CT, Cheng ML, Lo SY. HLA phenotypes and outcomes of hepatitis B virus infection in Taiwan. J Med Virol 2004; 72(1): 17-25
106. Karan MA, Tascioglu NE, Ozturk AO, Palanduz S, Carin M. The role of HLA antigens in chronic hepatitis B virus infection. J Pak Med Assoc. 2002; 52(6): 253-256
107. Qian Y, Zhang L, Liang XM, Hou JL, Luo KX. Association of immune response to hepatitis B vaccine with HLA-DRB1~*02, 07, 09 genes in the population of Han nationality in Guangdong Province. Di Yi Jun Yi Da Xue Xue Bao 2002; 22(1): 67-69
108. Akcam Z, Sunbul M, Durupinar B, Eroglu C, Esen S, Leblebicioglu H. Tissue types as prognostic risk factor in hepatitis B virus infection. Indian J Gastroenterol 2002; 21(4): 139-141
109. Ahn SH, Han KH, Park JY, Lee CK, Kang SW, Chon CY, Kim YS, Park K, Kim DK, Moon YM. Association between hepatitis B virus infection and HLA-DR type in Korea. Hepatology 2000; 31 (6): 1371-1373
110.刘蓬勃,徐慧文,王学良,李辉,庄贵华,乌正赉,张孔来。Field epidemiological and experimental study on relationship between genetic factor and non-response or hyporesponse to hepatitis B vaccine. Chinese Medical Journal 2000; 113: 547-550
111. Wang C, Tang J, Song W, Lobashevsky E, Wilson CM, Kaslow RA. HLA and cytokine gene polymorphisms are independently associated with responses to hepatitis B vaccination. Hepatology 2004; 39: 978-988
112.O1erup O, Zetterquist H. HLADR typing by PCR amplification with sequence-specific primers(PCR-SSP) in 2 hours: an alternative to serological DR typing in clinical practice including donor-recipient matching in cadaveric transplantation [J]. Tissue Antigen 1992; 39(l):225-235
113.Wong DK, Cheung AM, O'Rourke K, Naylor CD, Detsky AS and Heathcote J: Effect of alfa-interferon treatment in patients with hepatitis B e antigen-positive chronic hepatitis B. A metaanalysis. Ann Intern Med 1993; 119: 312-323
114.Lau DT, Everhart J, Kleiner DE, Park Y, Vergalla J, Schmid P, Hoofnagle JH. Long term follow up of patients with chronic hepatitis B treatmed with interferon alfa. Gastroenterology 1997; 113:1660-1667
115.Niederau C, Heintges T, Lange S, Goldmann G, Niederau CM, Mohr L, Haussinger D. Long term follow-up of HBeAg-positive patients treated with interferon alpha for chronic hepatitis B. N Engl J Med 1996; 334: 1422-1427
116.Lindh M, Hannoun C, Horal P, Krogsgaard K, and the interpred study group. Virological response to interferon therapy of chronic hepatitis B as measured by a highly sensitive assay. J Viral Hepatol 2001; 8:349-357
117.Papatheodoridis GV, Manesis E, Hadziyannis SJ. The long term outcome of interferon-alpha treated and untreated patients with HbeAg-negative chronic hepatitis B. J Hepatol 2001; 34:306-313
118.Brunetto MR, Oliveri F, Coco B, Leandro G, Colombatto P, Gorin JM, Bonino F. Outcome of antiHBe positive chronic hepatitis B in alpha-interferon treated and untreated patients: a long term cohort study. J Hepatol 2002; 36:263-270
119.Carreno V, Marchllin P, Hadziyannis S, Salmeron J, Diago M, Kitis GE, Vafiadis I, Schalm SW, Zahm F, Manzarbeitia F, Jimenez FJ, Quiroga JA. Retretment of chronic hepatitis B e antigen-positive patients with recombinant interferon alfa-2a. Hepatology 1999; 30:277-282
120.Lin SM, Sheen IS, Chien RN, Chu CM, Liaw YF. Long term beneficial effect of inerferon therapy in patients with chronic hepatitis B virus infection. Hepatology 1999; 29:971-975
121.Janssen HL, Gerken G, Carreno V, Marcellin P, Naoumov NV, Craxi A, Ring-Larsen H, Kitis G, VanHattum J, de Vries RA, Michielsen PP, ten Kate FJ, Hop WC, Heijtink RA, Honkoop P, Schalm SW. Interferon alfa for chronic hepatitis B infection: increased efficacy of prolonged treatment. The Europen concerted action on viral hepatitis (EUROHEP). Hepatology 1999; 30:238-243
122.Lampertico P, Del Ninno E, Manzin A, Donato MF, Rumi MG, Lunghi G, Morabito A, Clementi M, Colombo M. A randomized, controlled trial of 24-month course of interferon-alfa 2b in patients with vchronic hepatitia B who had hepatitis B DNA without hepatitis B e antigen in serum. Hepatotogy 1997; 26:1621-1625
123.Tatulli I, Francavilla R, Rizzo GL, Vinciguerra V, Ierardi E, Amoruso A, Panella C, Francavilla A. Lamivudine and alpha-interferon in combination long term for precore mutant chronic hepatitis B. J Hepatol 2001; 35:805-810
124.Thio CL, Carrington M, Marti D, O'Brien SJ, Vlahov D, Nelson KE, Astemborski J, Thomas DL. Class II HLA alleles and hepatitis B virus persistence in African Americans. J Infect Dis 1999; 179: 1004-1006