2021年贵阳市HIV-1感染者基因亚型及耐药分析Analysis of gene subtypes and drug resistance of HIV-1 infected individuals in Guiyang city in 2021
覃达文,洪章萍,蒙楠,王艺,沈渡,胡勇,杨兴林
摘要(Abstract):
目的 选取贵阳市公共卫生救治中心接受抗反转录病毒治疗(antiretroviral treatment,ART)前的人类免疫缺陷病毒1型(human immunodeficiency virus type 1,HIV-1)感染者进行基因亚型及耐药研究,为贵阳市艾滋病防治工作提供科学依据。方法 收集贵阳市公共卫生救治中心2021年1月1日—12月30日接受ART前的HIV-1感染者160例,采集HIV-1感染者外周静脉血样本,通过巢式聚合酶链反应(polymerase chain reaction,PCR)扩增HIV-1 pol区基因,采用Sanger法进行测序。使用HIVdb Program在线工具进行耐药突变分析,采用Fisher确切概率法对调查对象人口学特征、基因亚型分布及耐药情况进行分析。结果 160份HIV感染者样本中成功扩增得到143条基因序列。11例HIV感染者发生ART前耐药,耐药率为7.69%(11/143)。HIV-1感染者存在6种基因亚型,以CRF07_BC和CRF01_AE亚型为主,分别占46.85%(67/143)、32.87%(47/143),其次为CRF08_BC亚型(15.38%,22/143)、B亚型(2.10%,3/143)、C亚型(1.40%,2/143)和CRF55_01B亚型(1.40%,2/143);性传播途径为主,占已知传播途径的97.20%(139/143)。HIV-1基因亚型以非核苷类反转录酶抑制剂(non-nucleoside reverse transcriptase inhibitors,NNRTIs)耐药为主,其中E138A(5/143)和K103N(4/143)位点突变率较高;HIV-1感染者存在NNRTIs及蛋白酶抑制剂(protease inhibitors,PIs)交叉耐药。结论 2021年,性传播是导致贵阳市HIV-1感染者基因亚型多样性的重要原因,HIV毒株处于中度耐药水平,应持续加强HIV感染者耐药监测,预防耐药毒株的传播。
关键词(KeyWords): 人类免疫缺陷病毒-1;基因亚型;性传播;耐药;耐药突变
基金项目(Foundation): 贵阳市科技计划项目(筑科合同[2018] 1-40号)
作者(Author): 覃达文,洪章萍,蒙楠,王艺,沈渡,胡勇,杨兴林
DOI: 10.16505/j.2095-0136.2024.2011
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