检验医学 ›› 2016, Vol. 31 ›› Issue (11): 944-947.DOI: 10.3969/j.issn.1673-8640.2016.011.004

• 临床应用研究·论著 • 上一篇    下一篇

干血斑和血清样本用于检测乙型肝炎病毒DNA及耐药突变的比较

张敏1, 王前英1, 李昕1, 王刚1, 胡芸文2   

  1. 1.上海市公共卫生临床中心医学检验科,上海 201508
    2.上海市公共卫生临床中心应急检测和生物安全部,上海 201508
  • 收稿日期:2015-12-28 出版日期:2016-11-30 发布日期:2016-12-22
  • 作者简介:null

    作者简介:张 敏,女,1981年生,硕士,主管技师,主要从事分子诊断研究。

    通讯作者:胡芸文,联系电话:021-37990333-6513。

  • 基金资助:
    上海市科学技术委员会西医引导类项目(124119a1200);上海市卫生和计划生育委员会科研课题青年项目(20144Y0075)

Comparison of dried blood spot samples and serum samples for HBV DNA quantification determination and drug resistance mutation

ZHANG Min1, WANG Qianying1, LI Xin1, WANG Gang1, HU Yunwen2   

  1. 1. Department of Clinical Laboratory,Shanghai Public Health Clinical Center,Shanghai 201508,China
    2. Emergency Detection and Bio-safety Department,Shanghai Public Health Clinical Center,Shanghai 201508,China
  • Received:2015-12-28 Online:2016-11-30 Published:2016-12-22

摘要:

目的 验证干血斑(DBS)样本替代静脉血血清样本用于检测乙型肝炎病毒(HBV)基因诊断的可行性。方法 选择慢性乙型肝炎患者100例,血清HBV的病毒载量>1×102拷贝/mL,抽取静脉血同时制备DBS样本和血清样本,进行HBV DNA定量检测,比较DBS与血清样本检测结果的相关性。选取73例基因型主要为B、C型的患者,进行DBS和血清样本基因型检测的比较。同时随机选取56例乙型肝炎患者的DBS和血清样本,采用实验室自建的套式聚合酶链反应(PCR)扩增HBV的逆转录酶(RT)区段,通过geno2pheno数据库进行结果分析,比较二者耐药性的检测结果。结果 DBS样本HBV DNA的检测范围为2~8 log10拷贝/mL,与血清样本HBV DNA的检测结果高度相关(r2=0.82,P<0.05),DBS样本HBV DNA定量值比血清样本低1个数量级。2种样本HBV耐药性检测结果的总符合率为95.83%;DBS和血清样本耐药状态的检出率分别为82.14%和85.71%(P>0.05)。2种样本HBV基因分型结果的符合率为100.00%。结论 DBS样本可用于HBV DNA的定量及耐药性的检测。

关键词: 干血斑, 乙型肝炎病毒, DNA, 耐药性

Abstract:

Objective To assess the feasibility of dried blood spot(DBS) sample as an alternative to serum sample for hepatitis B virus(HBV)determination. Methods DBS samples and serum samples were prepared through extracting venous blood,and HBV DNA was determined for 100 patients with chronic hepatitis B,whose HBV virus load >1×102 copies/mL. DBS and serum sample results were compared by correlation analysis. HBV genotypes were analyzed in 73 patients of genotype B and genotype C. A total of 56 DBS and serum samples from patients with hepatitis B were collected randomly. Using an in-house nest polymerase chain reaction(PCR) for reverse transcriptase segment,the data were analyzed using geno2pheno. Results HBV DNA of DBS samples was determined in a range of 2-8 log10 copies/mL. The correlation coefficient(r2) for HBV DNA between DBS samples and serum samples was 0.82(P<0.05). The quantification of HBV DNA determination in DBS samples was 1 log10 lower than that in serum samples. The coincidence rate of the 2 kinds of samples was 95.83%. For DBS and serum samples,the determination rates for drug resistance were 82.14% and 85.71%(P>0.05). The coincidence rate of DBS and serum samples for HBV genotype was 100.00%. Conclusions DBS samples can be used in HBV DNA quantification and drug resistance determinations.

Key words: Dried blood spot, Hepatitis B virus, DNA, Drug resistance

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