• 中国科学论文统计源期刊
  • 中国科技核心期刊
  • 美国化学文摘(CA)来源期刊
  • 日本科学技术振兴机构数据库(JST)

临床输血与检验 ›› 2019, Vol. 21 ›› Issue (6): 619-622.DOI: 10.3969/j.issn.1671-2587.2019.06.017

• 临床检验 • 上一篇    下一篇

深圳地区慢性乙型肝炎病毒感染者天然耐药现状及其与基因型的关系*

陈望, 刘爱玲, 吴敏   

  1. 518109 广东省深圳市龙华区人民医院检验科
  • 收稿日期:2018-05-25 出版日期:2019-12-20 发布日期:2019-12-25
  • 作者简介:陈望(1984-),女,湖南邵东人,硕士,主管技师,主要从事免疫学和分子生物学检验工作,(Tel)15889645915。
  • 基金资助:
    *本课题受深圳市龙华区科技局基金(No.2017060),深圳市龙华新区2015年科技创新基金“重点实验室”(No.2015-39)资助

Natural Resistance of HBV to LMV/ADV Treatments and Its Association with Genetic Structure in Shenzhen Region

CHEN Wang, LIU Ai-ling, WU Min   

  1. Laboratory of Shenzhen Longhua District Hospital,Guangdong 518109
  • Received:2018-05-25 Online:2019-12-20 Published:2019-12-25

摘要: 目的 了解深圳地区慢性乙型肝炎病毒(HBV)感染者的天然耐药现状,并对其基因分型和天然耐药基因进行分析。方法 收集2017年3月~2018年2月来深圳市龙华区人民医院就诊并确诊为HBV感染且未使用核苷( 酸) 类似物抗病毒治疗的患者503例。采用PCR-反向点杂交基因芯片法对患者标本的HBV基因型及其与HBV耐药相关基因突变进行分析。结果 503例HBV感染者中检出64例对拉米夫定(LMV)和/或阿德福韦酯(ADV)天然耐药,耐药率为12.72%,其中对LMV天然耐药率为73.44%,明显高于对ADV天然耐药率的23.44%和对LMV和ADV同时耐药的3.13%,差异有统计学意义(P<0.01~0.05)。503例HBV感染者B基因型检出率68.59%,明显高于C基因型的23.06%、D基因型的2.59%及B+C混合基因型的5.77%,差异有统计学意义(P<0.05~0.01)。对LMV和ADV天然耐药基因突变中,耐药基因型均以B型为主,其中对LMV天然耐药基因突变类型以rtM204V为主,突变率为36.17%,明显高于其他突变类型,差异有统计学意义(P<0.01~0.05),对ADV天然耐药基因突变类型以rt236T为主,突变率为46.67%,明显高于其他突变类型,差异有统计学意义(P<0.01~0.05),而2例对LMV和ADV同时耐药基因型以B型为主,基因突变类型均为rtM204V+rtN236T。结论 深圳地区慢性HBV感染者对LMV和/或ADV有一定的天然耐药率,基因突变主要见于B基因型,基因突变类型以rtM204V和rtN236T为主。因此,HBV感染者治疗前进行天然耐药、基因分型及突变类型检测,对提高HBV治疗效果和降低耐药率具有重要的临床意义。

关键词: 乙型肝炎病毒, 天然耐药, 基因检测

Abstract: Objectiv To understand current situation of natural resistance of hepatitis B virus (HBV) to lamivudine (LMV) and/or adefovir(ADV)and its association with the virus genotypes. Methods Five hundred and three cases of HBV infection without antiviral treatments were analyzed. The HBV genotypes and viral resistance gene mutations were examined by PCR-reverse dot hybridization gene chips. Results Sixty four of 503 patients (12.72%) with HBV infection were found to carry natural LMV resistance,with the frequency of 73.44%,significantly higher than that of 23.44% in ADV and that of 3.13% in combination of both LMV and ADV (P<0.01~0.05). Genotype B was seen in 68.59% of CHB patients,which was markedly higher than type C (23.06%),type D (2.59%) or type B+C (5.77%)( P<0.05~0.01). Type B dominates in gene mutations of natural resistance to LMV and ADV,among them rtM204V mutation was most frequently noted in 36.17% of LMV natural resistance (P<0.01~0.05) whereas rt236T mutation was detected in 46.67% of ADV natural resistance (P<0.01~0.05). Two patients with LMV and ADV resistance showed type B,carrying rtM204V+rtN236T mutations.Conclusion sPatients with chronic hepatitis B in Shenzhen have a high frequency of natural resistance to LMV and/or ADV. Gene mutation mainly occurs in genotype B,with the sites of rtM204V and rtN236T. Detection of natural drug resistance combined with genotyping before treatment is of clinical significance in enhancing the therapeutic effect of CHB.

Key words: Hepatitis B virus, Natural resistance, Genotyping

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