目的了解广东地区HIV/HCV共感染患者和单纯HIV感染患者的感染途径及HIV-1病毒基因亚型分布特征,为艾滋病的治疗与预防提供实验室数据。方法采用巢式RT-PCR对广东地区51例HIV/HCV共感染患者和48例单纯HIV感染患者HIV-1 ENV基因c2v3区域及GAG基因p17区域进行扩增,PCR产物测序后所获得序列进行HIV-1病毒基因亚型分析。结果 HIV/HCV共感染患者主要感染途径为静脉注射毒品,约占82%,其HIV-1有4种基因亚型,不同亚型以及比例分别为CRF01_AE(54.9%)、CRF07_BC(33.3%)、CRF08_BC(4%)和B'型(7.8%),CRF01_AE亚型为经静脉注射毒品感染的HIV/HCV共感染患者的主要HIV-1基因亚型,约占54.7%;单纯HIV感染患者主要感染途径为性,约占77%,其HIV-1有5种基因亚型,不同亚型及比例分别为CRF01_AE(77.1%)、CRF07_BC(10.4%)、CRF08_BC(6.2%)、B'型(4.2%)和B型(2.1%),CRF01_AE亚型为经性途径感染的单纯HIV感染患者的主要HIV-1基因亚型,约占78.4%。结论广东省HIV/HCV共感染患者和单纯HIV感染患者中流行的HIV-1病毒基因亚型呈现多样性,尽管HIV/HCV共感染患者的主要感染途径与单纯HIV感染患者的不同,但HIV-1病毒主要基因亚型相同。
Objective To investigate the transmission routes and subtypes distribution of HIV in HIV/HCV co infected and HIV mono-infected individuals in Guangdong Province.Methods Reverse transcription nested(RT PCR) was performed to amplify the HIV-1 ENV c2v3 and GAG p17 gene regions from 51 HIV/HCV co-infected and 48 HIV mono-infected individuals in Guangdong province.The PCR products were sequenced for HIV subtyping.Genetic analysis was done by MEGA4 software.Results Injection drug use(IDU,82%) was the main route of the transmission of HIV/HCV co-infection.The HIV subtype CRF01_AE(54.9%),CRF07_BC(33.3%),CRF08_BC(4%) and B’(7.8%) were identified;among which CRF01_AE(54.7%) was proved the predominant one in HIV/HCV co-infection through IDU.The sexual contact(77%) was the main route of the transmission of HIV mono-infection.The HIV subtype CRF01_AE(77.1%),CRF07_BC(10.4%),CRF08_BC(6.2%),B’(4.2%) and B(2.1%) were identified;among which CRF01_AE(78.4%) was proved the predominant one in HIV mono-infection through sexual contact.Conclusion Sufficient diversity of HIV subtype in HIV/HCV co-infection or HIV mono-infection in Guangdong province is revealed.Although the major transmission routes of HIV/HCV co-infection and HIV mono-infection are differed,the major HIV subtype is identical.