15/10/02说明:此前论坛服务器频繁出错,现已更换服务器。今后论坛继续数据库备份,不备份上传附件。

肝胆相照论坛

 

 

肝胆相照论坛 论坛 学术讨论& HBV English 病毒载量在持续正常的ALT慢性感染患者中乙型肝炎病毒进 ...
查看: 523|回复: 1
go

病毒载量在持续正常的ALT慢性感染患者中乙型肝炎病毒进化 [复制链接]

Rank: 8Rank: 8

现金
62111 元 
精华
26 
帖子
30437 
注册时间
2009-10-5 
最后登录
2022-12-28 

才高八斗

1
发表于 2018-11-8 09:44 |只看该作者 |倒序浏览 |打印
Infect Genet Evol. 2018 Oct 25;67:17-22. doi: 10.1016/j.meegid.2018.10.017. [Epub ahead of print]
Role of viral load in Hepatitis B virus evolution in persistently normal ALT chronically infected patients.
Gauder C1, Mojsiejczuk LN2, Tadey L3, Mammana L3, Bouzas MB3, Campos RH2, Flichman DM4.
Author information

1
    Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Microbiología, Inmunología y Biotecnología, Cátedra de Virología, Junín 956 4to piso, Ciudad Autónoma de Buenos Aires, Argentina.
2
    Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Microbiología, Inmunología y Biotecnología, Cátedra de Virología, Junín 956 4to piso, Ciudad Autónoma de Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
3
    Unidad de Virología Hospital F.J. Muñiz, Uspallata 2272, Ciudad Autónoma de Buenos Aires, Argentina.
4
    Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Microbiología, Inmunología y Biotecnología, Cátedra de Virología, Junín 956 4to piso, Ciudad Autónoma de Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina. Electronic address: [email protected].

Abstract

Chronic HBV infection has been associated with severe liver disease although most of them do not progress to this stage. Even though low replicative carriers form the largest group of HBV chronically infected patients, there is a paucity of longitudinal studies to evaluate the molecular evolution of the whole genome in this subset of patients. In this study, longitudinal samples from 10 patients with persistently normal ALT levels were collected. HBV full-length genome sequences were obtained from 3 samples per patient (baseline, 5 and 10-years of follow-up). Patients were grouped according to HBV-DNA level into <103 IU/ml (group A) or > 103 IU/ml (group B). The substitution rate was inversely related with HBV-DNA levels. Moreover, the rate in the 10-year follow-up was significantly higher in group A (6.9 × 10-4 ± 1.3 × 10-4) than group B (2.7 × 10-4 ± 7.4 × 10-5 substitution/site/year, p < .001). Most of the substitutions were in the Core region and the majority were non-synonymous changes. The rate of nucleotide substitution was inversely related to HBV-DNA levels, highlighting the role of viral load in the HBV intra-host dynamics, even in low replicative state patients. Moreover, the difference in the substitution rate between the analysed groups was mainly consequence of substitutions restricted to the Core region, particularly in the simple coding region and antigenic epitopes, which suggest that the immune pressure drives the different evolutionary behaviour of groups.
KEYWORDS:

Evolution; Hepatitis B virus; Low replicative patients; Nucleotide substitution rate; Viral load

PMID:
    30393187
DOI:
    10.1016/j.meegid.2018.10.017

Rank: 8Rank: 8

现金
62111 元 
精华
26 
帖子
30437 
注册时间
2009-10-5 
最后登录
2022-12-28 

才高八斗

2
发表于 2018-11-8 09:44 |只看该作者
感染Genet Evol。 2018年10月25日; 67:17-22。 doi:10.1016 / j.meegid.2018.10.017。 [提前打印]
病毒载量在持续正常的ALT慢性感染患者中乙型肝炎病毒进化中的作用。
Gauder C1,Mojsiejczuk LN2,Tadey L3,Mammana L3,Bouzas MB3,Campos RH2,Flichman DM4。
作者信息

1
    Universidad de Buenos Aires,Facultad de FarmaciayBioquímica,DepartamentodeMicrobiología,InmunologíayBiotecnología,CátedradeVirología,Junín9564to piso,CiudadAutónomadeBuenos Aires,Argentina。
2
    Universidad de Buenos Aires,Facultad de FarmaciayBioquímica,DepartamentodeMicrobiología,InmunologíayBiotecnología,CátedradeVirología,Junín9564to piso,CiudadAutónomadeBuenos Aires,Argentina;阿根廷国家调查委员会(CONICET)。
3
    UnidaddeVirologíaHospitalF.J.Muñiz,Uspallata 2272,CiudadAutónomadeBuenos Aires,Argentina。
4
    Universidad de Buenos Aires,Facultad de FarmaciayBioquímica,DepartamentodeMicrobiología,InmunologíayBiotecnología,CátedradeVirología,Junín9564to piso,CiudadAutónomadeBuenos Aires,Argentina;阿根廷国家调查委员会(CONICET)。电子地址:[email protected]

抽象

慢性HBV感染与严重的肝脏疾病有关,尽管他们中的大多数没有进展到这个阶段。尽管低复制载体构成HBV慢性感染患者中最大的一组,但是缺乏纵向研究来评估该亚组患者中整个基因组的分子进化。在该研究中,收集了来自10名持续正常ALT水平的患者的纵向样品。从每位患者的3个样品(基线,5年和10年的随访)获得HBV全长基因组序列。根据HBV-DNA水平将患者分组为<103IU / ml(组A)或> 103IU / ml(组B)。取代率与HBV-DNA水平呈负相关。此外,A组10年随访率(6.9×10-4±1.3×10-4)明显高于B组(2.7×10-4±7.4×10-5替代/部位/年,p <.001)。大多数替换都在核心区域,大多数是非同义变化。核苷酸取代率与HBV-DNA水平呈负相关,突出了病毒载量在HBV宿主内动力学中的作用,即使在低复制状态患者中也是如此。此外,分析组之间取代率的差异主要是限于核心区域的取代的结果,特别是在简单编码区和抗原表位中,这表明免疫压力驱动组的不同进化行为。
关键词:

演化;乙型肝炎病毒;低复制患者;核苷酸取代率;病毒载量

结论:
    30393187
DOI:
    10.1016 / j.meegid.2018.10.017
‹ 上一主题|下一主题
你需要登录后才可以回帖 登录 | 注册

肝胆相照论坛

GMT+8, 2024-6-29 13:25 , Processed in 0.012152 second(s), 11 queries , Gzip On.

Powered by Discuz! X1.5

© 2001-2010 Comsenz Inc.