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中国中部武汉地区体检人群丙型肝炎病毒流行率及基因型的年龄和性别分布

Age and gender distribution of Hepatitis C virus prevalence and genotypes of individuals of physical examination in WuHan, Central China.

作者信息

Niu ZhiLi, Zhang PingAn, Tong YongQing

机构信息

Department of Laboratory Science, Renmin Hospital of WuHan University, Wuhan City, 430060 Hu Bei Province China.

出版信息

Springerplus. 2016 Sep 13;5(1):1557. doi: 10.1186/s40064-016-3224-z. eCollection 2016.

Abstract

Approximately 170 million people in the world are infected with Hepatitis C virus (HCV). There are no published population based studies about the prevalence of HCV genotypes and the associations of genotype and Infection frequency with gender and age in WuHan. We aimed to investigate the distribution of HCV prevalence and genotypes among different gender and age patients with chronic HCV infection in WuHan from 2011 to 2015. A total of 2685 anti-HCV positive serum samples from individuals of physical examinationwere recruited from the Renmin Hospital of WuHan University, Hubei Province in China from January 2011 to December 2015. From these 2685 anti-HCV positive serum samples, 496 samples were with a positive PCR for HCV RNA. The number of HCV infection showed an increase with year, but the annual infection rate has remained similar (χ(2) = 2.94, P = 0.568). 2685 cases were infected with HCV from 2011 to 2015 in WuHan city of China. Blood transfusion (18.14 %) was the main routs of transmission, followed by Surgery (8.94 %). The highest prevalence of HCV infection was at the age group 50-59 (25.85 % of 2685) and the lowest prevalence was 0-9 (0.93 % of 2685). HCV genotype 1 was the most prevalent (73.39 %), followed by genotypes 2 (17.14 %), 3 (5.25 %) and 6 (3.22 %). Genotype 4 and 5 was not detected in these patients. The most prevalent subtype was subtype 1b (71.98 %), followed by genotypes 2a (17.14 %). Five patients had mixed infection across the HCV subtypes. Among all genotypes, genotype 1 was highest in both male (73.27 %) and female (73.47 %) patients, followed by genotype 2. Genotype 1 (male: 29.84 % of 496, vs female: 43.55 % of 496, χ(2) = 20.07, P < 0.0001), genotype 2 (male: 6.25 % of 496, vs female: 10.89 % of 496, χ(2) = 6.81, P = 0.009), and 6 (male: 1.41 % of 496, vs female: 1.81 % of 496, χ(2) = 0.626, P = 0.401) were more common in female patients than males, while no significant gender differences were observed for genotype 6. Among age group 50-59 years Genotype 1 was most common in male patients (29.05 % of 148) followed in 20-29 years (23.65 % of 148), genotype 2 in the age group 60-69 (12 cases of 31) and genotype 3 in the age group 50-59 (4 cases of 13) and genotype 6 was most frequent in the age group 30-39 (4 cases of 7). The frequency of HCV prevalence was significantly higher in female patients compared to males before ages 60, while the opposite result was observed after 60 years. The most common HCV genotype in WuHan was subtype 1b followed by 2a and more common among women than males patients. Further studies are needed to collect a large number of samples to estimate the different epidemiology of the HCV genotypes, because the sample size of non-genotype 1b and 2a is not large enough and other factors like disease history/monthly income/etc. are not included in our study.

摘要

全球约有1.7亿人感染丙型肝炎病毒(HCV)。目前尚无关于武汉市HCV基因型流行率以及基因型和感染频率与性别和年龄之间关联的基于人群的研究报道。我们旨在调查2011年至2015年武汉市不同性别和年龄的慢性HCV感染患者中HCV流行率和基因型的分布情况。2011年1月至2015年12月期间,从中国湖北省武汉大学人民医院招募了2685例体检个体的抗-HCV阳性血清样本。在这2685份抗-HCV阳性血清样本中,有496份HCV RNA的PCR检测呈阳性。HCV感染人数随年份增加,但年感染率保持相似(χ(2)=2.94,P=0.568)。2011年至2015年期间,中国武汉市有2685例感染HCV。输血(18.14%)是主要传播途径,其次是手术(8.94%)。HCV感染患病率最高的年龄组为50-59岁(占2685例的25.85%),最低患病率为0-9岁(占2685例的0.93%)。HCV基因型1最为常见(73.39%),其次是基因型2(17.14%)、基因型3(5.25%)和基因型6(3.22%)。这些患者中未检测到基因型4和5。最常见的亚型是1b亚型(71.98%),其次是2a基因型(17.14%)。有5例患者存在HCV亚型混合感染。在所有基因型中,基因型1在男性(73.27%)和女性(73.47%)患者中均最高,其次是基因型2。基因型1(男性:占496例的29.84%,女性:占496例的43.55%,χ(2)=20.07,P<0.0001)、基因型2(男性:占496例的6.25%,女性:占496例的10.89%,χ(2)=6.81,P=0.009)和基因型6(男性:占496例的1.41%,女性:占496例的1.81%,χ(2)=0.626,P=0.401)在女性患者中比男性患者更常见,而基因型6未观察到显著的性别差异。在50-59岁年龄组中,基因型1在男性患者中最常见(占148例的29.05%),其次是20-29岁(占148例的23.65%),基因型2在60-69岁年龄组(31例中的12例),基因型3在50-59岁年龄组(13例中的4例),基因型6在30-39岁年龄组最常见(7例中的4例)。60岁之前女性患者的HCV流行率显著高于男性,而60岁之后则观察到相反的结果。武汉市最常见的HCV基因型是1b亚型,其次是2a,且在女性患者中比男性患者更常见。需要进一步研究收集大量样本以评估HCV基因型的不同流行病学情况,因为非1b和2a基因型的样本量不够大,且我们的研究未纳入疾病史/月收入等其他因素。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8b0c/5021643/d7aff7c884d1/40064_2016_3224_Fig1_HTML.jpg

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