Serveur d'exploration SRAS

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Genetic Variation of SARS Coronavirus in Beijing Hospital

Identifieur interne : 005344 ( Main/Exploration ); précédent : 005343; suivant : 005345

Genetic Variation of SARS Coronavirus in Beijing Hospital

Auteurs : Dongping Xu [République populaire de Chine] ; Zheng Zhang [République populaire de Chine] ; Fuliang Chu [République populaire de Chine] ; Yonggang Li [République populaire de Chine] ; Lei Jin [République populaire de Chine] ; Lingxia Zhang [République populaire de Chine] ; George F. Gao [Royaume-Uni] ; Fu-Sheng Wang [République populaire de Chine]

Source :

RBID : PMC:3323231

Descripteurs français

English descriptors

Abstract

To characterize genetic variation of severe acute respiratory syndrome–associated coronavirus (SARS-CoV) transmitted in the Beijing area during the epidemic outbreak of 2003, we sequenced 29 full-length S genes of SARS-CoV from 20 hospitalized SARS patients on our unit, the Beijing 302 Hospital. Viral RNA templates for the S-gene amplification were directly extracted from raw clinical samples, including plasma, throat swab, sputum, and stool, during the course of the epidemic in the Beijing area. We used a TA-cloning assay with direct analysis of nested reverse transcription–polymerase chain reaction products in sequence. One hundred thirteen sequence variations with nine recurrent variant sites were identified in analyzed S-gene sequences compared with the BJ01 strain of SARS-CoV. Among them, eight variant sites were, we think, the first documented. Our findings demonstrate the coexistence of S-gene sequences with and without substitutions (referred to BJ01) in samples analyzed from some patients.


Url:
DOI: 10.3201/eid1005.030875
PubMed: 15200810
PubMed Central: 3323231


Affiliations:


Links toward previous steps (curation, corpus...)


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<p>To characterize genetic variation of severe acute respiratory syndrome–associated coronavirus (SARS-CoV) transmitted in the Beijing area during the epidemic outbreak of 2003, we sequenced 29 full-length S genes of SARS-CoV from 20 hospitalized SARS patients on our unit, the Beijing 302 Hospital. Viral RNA templates for the S-gene amplification were directly extracted from raw clinical samples, including plasma, throat swab, sputum, and stool, during the course of the epidemic in the Beijing area. We used a TA-cloning assay with direct analysis of nested reverse transcription–polymerase chain reaction products in sequence. One hundred thirteen sequence variations with nine recurrent variant sites were identified in analyzed S-gene sequences compared with the BJ01 strain of SARS-CoV. Among them, eight variant sites were, we think, the first documented. Our findings demonstrate the coexistence of S-gene sequences with and without substitutions (referred to BJ01) in samples analyzed from some patients.</p>
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