HAART治疗儿童的HIV-1基因型耐药变异情况  被引量:2

HIV-1 genotypic resistance profiles in children failing highly active antiretroviral therapy

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作  者:刘志英[1] 魏红山[1] 赵红心[2] 刘亚楠[1] 赵燕 韩宁[2] 成军[1] 张福杰 

机构地区:[1]北京地坛医院研究所 [2]北京地坛医院感染科 [3]中国疾病预防与控制中心,北京100050

出  处:《中华医学杂志》2007年第46期3292-3294,共3页National Medical Journal of China

基  金:国家"十五"攻关课题资助项目(2004ba719a11);首都医学发展基金(2003-3067)

摘  要:目的研究我国某地区 HAART 治疗的儿童 HIV-1基因型耐药变异情况,为临床治疗HIV-1感染儿童提供参考实验室参考数据。方法利用 RT-PCR 和套式 PCR 从20例 HAART 治疗失败的 HIV-1感染儿童的血浆中提取的病毒 RNA 扩增 HIV-1逆转录酶基因(RT)第40~250位氨基酸,直接将 PCR 产物进行序列测定分析,利用斯坦福大学网站提供的 HIV db 数据库分析该两个区域的耐药基因变异情况。结果(1)20例患儿根据 RT 区基因分型结果显示均为 B 亚型;(2)分别有20、15、13例患儿对 NVP、DLV 和 EFV 产生了高度耐药;分别有7例、5例患儿对 AZT 产生了高、中度耐药;有5例患儿对3TC 产生了从潜在低度-中度耐药突变,而有11例患儿出现了高度耐药突变;针对 d4T、ddI 的中、高度耐药共占11/20;此外,19例患儿出现了针对从未服用的 ABC 的不同程度的耐药突变,12例患儿出现了针对 TDF 的不同程度的耐药突变。结论 HIV-1耐药突变株的出现是儿童抗病毒治疗失败的主要原因之一,对于正在抗病毒治疗中的 HIV-1患儿,应及时进行耐药变异监测,及早发现耐药变异,及时改变抗病毒治疗药物以达到真正的病毒抑制效果。Objective To study the genotypic resistance profiles of HIV-1 children failing highly active antiretroviral therapy (HAART) so as to provide helpful information for the treatment regime of Chinese children infected with HIV-1. Methods Peripheral venous blood samples were collected from 20 HIV-1 infected children of Henan province, aged 9 (3 - 14). Nested RT-PCR was used to amplify part of the RT (40 -250 aa) gene. The PCR products of RT gene underwent nucleotide sequencing, the resulting nucleotide sequences were analyzed by the HIVdb data offered by the Stanford University web site to find the drug resistance mutations. Results ( 1 ) Phylogenetic analysis revealed that 20 of the RT sequences were classified as subtype B. (2) According to the genotypic analysis, 20 , 15, and 13 children showed high level resistance to the nevirapine. (NVP), delavirdine (DLV), and efavirenz (EFV) respectively; 7 and 5 children showed high and intermediate level resistance to azidothymidine (AZT) respectively. Five children showed potential low-level and intermediate level resistance to lamivudine (3TC), and 11 showed high level resistance to 3TC ; 11 showed intermediate and high level resistance to stavudine (d4T) and didanoside (ddI) respectively; and 19 and 12 children showed resistance to abacavir (ABC) and tenofovir (TDF) which had never been taken by these children. Conclusion The emergence of HIV resistant strains during antiretroviral therapy is one of the main reasons for treatment failure in HIV-infected children.

关 键 词:HIV-1 抗逆转录病毒治疗 高效 儿童 耐药变异 

分 类 号:R725.1[医药卫生—儿科]

 

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