我國(guó)部分地區(qū)靜脈吸毒人群HCV基因型分布的探討
本文關(guān)鍵詞: 丙型肝炎病毒 靜脈吸毒人群 基因型分布 出處:《中國(guó)艾滋病性病》2017年08期 論文類型:期刊論文
【摘要】:目的了解靜脈吸毒人群丙型肝炎病毒(HCV)感染者的基因亞型分布及影響因素,為防治靜脈吸毒人群感染HCV提供依據(jù)。方法收集828份靜脈吸毒人群樣本,HCV抗體初篩用酶聯(lián)免疫吸附試驗(yàn)(ELISA),有反應(yīng)性的樣本再用重組免疫印跡法(RIBA)進(jìn)行補(bǔ)充試驗(yàn),陽性的樣本進(jìn)行核酸檢測(cè);核酸陽性的樣本先用HCV基因分型試劑盒進(jìn)行分型,未通過分型試劑盒確定型別的樣本,再用巢式聚合酶鏈?zhǔn)椒磻?yīng)擴(kuò)增HCV CORE區(qū)進(jìn)行測(cè)序,以確定HCV基因型。結(jié)果 828份靜脈吸毒人群樣本中,HCV抗體陽性498份,核酸檢測(cè)呈陽性反應(yīng)的樣本390份,通過HCV基因分型試劑盒確定型別的樣本311份,經(jīng)CORE區(qū)測(cè)序確定型別的樣本70份,有9份未成功擴(kuò)增出序列,共有381份樣本確定了基因亞型。其主要基因亞型為3b、3a、1b、6n及6a五種型別,分別占38.6%(147/381)、20.5%(78/381)、18.6%(71/381)、10.8%(41/381)、8.7%(33/381);不同地區(qū)之間流行的HCV基因型別差異具有統(tǒng)計(jì)學(xué)意義(χ~2=282.23,P0.01);男性和女性之間主要基因型不太一致;各年齡段間HCV基因亞型分布的差異無統(tǒng)計(jì)學(xué)意義(χ~2=40.93,P0.05),但30~50歲感染者居多。不同基因型之間HCV核糖核酸含量的差異有統(tǒng)計(jì)學(xué)意義(F=5.85,P0.01)。結(jié)論靜脈吸毒人群HCV感染者的基因亞型主要為1b、3a、3b、6a及6n,基因型分布具有地域性差異,并且病毒載量與基因型的分布具有相關(guān)關(guān)系。
[Abstract]:Objective to investigate the distribution of gene subtypes and influencing factors of hepatitis C virus (HCV) infection in intravenous drug users. Methods 828 samples of intravenous drug users were collected for primary screening of anti-HCV antibodies by enzyme linked immunosorbent assay (Elisa), and the reactive samples were tested with recombinant Western blotting (RIBA). The positive samples were tested for nucleic acid, and the positive samples were typed by HCV genotyping kit, then the HCV CORE region was amplified by nested polymerase chain reaction (NPCR) and sequenced. Results 498 samples were positive for HCV antibody, 390 samples were positive for nucleic acid detection, and 311 samples were identified by HCV genotyping kit. Of the 70 samples identified by CORE sequencing, 9 were not amplified successfully, and a total of 381 samples were identified as gene subtypes. There were significant differences in the genotypes of HCV between different regions (蠂 ~ 2282.23, P 0.01, 蠂 ~ 2 282.23, P 0.01), and there were significant differences between male and female in the major genotypes (P < 0.05), and 10.8% in 41 / 38 ~ (-1) / 10.8% ~ 8.7% ~ 3.7% respectively (蠂 ~ 2282.23 P 0.01), and there was a significant difference between the two groups (蠂 ~ 2282.23 P0.01), and there was a significant difference between the two groups (蠂 ~ (2) 282.23 P 0.01). There was no significant difference in the distribution of HCV gene subtypes among different age groups (蠂 ~ (2 +)) 40.93 (P 0.05), but the majority of patients aged 30 ~ 50 years were infected with HCV. There were significant differences in HCV ribonucleic acid content among different genotypes. The subtypes of the subtypes were mainly 1b ~ 3a ~ (3a) ~ (3b) ~ (6a) and ~ (6) n.The distribution of genotypes was different in different regions. There was a correlation between viral load and genotype distribution.
【作者單位】: 中國(guó)疾病預(yù)防控制中心性病艾滋病預(yù)防控制中心參比室;
【分類號(hào)】:R512.91;R749.64
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