摘要
目的:分析黑龙江地区丙型肝炎病毒(hepatitisC virus,HCV)基因型的流行特征和相关的影响因素,以便对HCV感染的控制和个体化治疗提供依据.方法:采用型特异性巢式多重PCR法对外周血血浆中HCV基因亚型1a、1b、2a和2b进行检测,分析HCV基因亚型的组成及其与性别、年龄、HCV RNA定量和丙氨酸氨基转移酶(alanine aminotransferase,ALT)水平的关系.结果:通过对1313例HCV感染者外周血血浆标本的检测和分析,HCV基因亚型检出率为70.60%(927/1313),其中以1b、2a和1b与2a混合感染为主,尚包括少量分别与1a和2b的混合感染,即1b+/2a-为388例(41.86%)、2a+/1b-为318例(34.30%)和1b+2a为197例(21.25%),单纯1a或2b以及二者混合(1a+/2b)仅检出24例,占2.59%.2a+/1b-在女性组(37.50%)、HCVRNA(1.000-9.999)×104组(54.55%)、ALT水平>200组(60.87%)和≤40组(41.02%)比率均较相应的其他各组有意义的增高(P<0.05),而1b+/2a-在HCV RNA(1.000-9.999)×104组(24.24%)和ALT水平>200组(13.04%)均较相应的其他各组有意义的降低(P<0.05),未发现与年龄有关.结论:本地区HCV主要流行株是1b和2a,其分布可能与性别、HCV RNA水平和ALT水平有关,随着医疗条件的改善和联合治疗的开展,本地区HCV感染有望得到较好的控制.
AIM: To analyze the distribution of different hepatitis C virus (HCV) subgenotypes in Heilongjiang province, China. METHODS: Serum samples from 1 313 patients with HCV infection, including 627 (47.75%) males and 686 (52.25%) females, were subgeno- typed using multiplex nested PCR assay. The associations of HCV subgenotypes with gender, age, viral load, and ALT level were analyzed. RESULTS: Of 1 313 patients, 927 (70.60%) were successfully subgenotyped. Among typable subgenotypes, lb+/2a was found in 388 (41.86%) cases, 2a+/1b in 318 (34.30%) cases, 1b+2a in 197 (21.25%) cases, and 1a+/2b in 24 (2.59%) cases. The percentage of patients with 2a+/1b subgenotype was significantly higher in females (37.50%) and patients with HCVRNA of (1.000-9.999)×10^4 (54.55%), ALT level 〉200 (60.87%) or ≤ 40 (41.02%) (all P 〈 0.05). The percentage of patients with lb+/2a subgenotype was significantly lower in patients with HCVRNA of (1.000-9.999) ×10^4 (24.24%) or ALT level 〉200 (13.04%) (both P 〈 0.05). CONCLUSION: Genotypes 1b and 2a are the most prevalent genotypes in Heilongjiang province. The distribution of different HCV subgenotypes is associated with gender, viral load, and ALT level.
出处
《世界华人消化杂志》
CAS
北大核心
2013年第6期531-536,共6页
World Chinese Journal of Digestology