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Influenza A virus infection induces liver injury in mice.

Identifieur interne : 000B19 ( Main/Exploration ); précédent : 000B18; suivant : 000B20

Influenza A virus infection induces liver injury in mice.

Auteurs : Shouping Zhang [République populaire de Chine] ; Bin Hu [République populaire de Chine] ; Jingfei Xu [République populaire de Chine] ; Qiuxuan Ren [République populaire de Chine] ; Lirong Wang [République populaire de Chine] ; Sanhu Wang [République populaire de Chine]

Source :

RBID : pubmed:31505263

Descripteurs français

English descriptors

Abstract

Respiratory infections such as SARS-CoV in humans are often accompanied by mild and self-limiting hepatitis. As a respiratory disease, influenza A virus (IAV) infection can lead to hepatitis, but the mechanism remains unclear. This study aimed to investigate the occurrence of hepatitis by establishing a model for infected mice for three different subtypes of respiratory IAVs (H1N1, H5N1, and H7N2). Histological analysis was performed, and results showed increase serum aminotransferase (ALT and AST) levels and evident liver injury on days 3 and 7, especially on day 5 post infection. Immunohistochemistry (IHC) results indicated a wide distribution of IAV's positive signals in the liver of infected mice. Real-time PCR results further revealed a similar viral titer to IHC that presented a remarkedly positive correlation with histology injury. All these data showed that the mouse model suitably contributed valuable information about the mechanism underlying the occurrence of hepatitis induced by respiratory influenza virus.

DOI: 10.1016/j.micpath.2019.103736
PubMed: 31505263


Affiliations:


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<term>Hepatitis (pathology)</term>
<term>Humans</term>
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<term>Orthomyxoviridae Infections</term>
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<term>Hepatitis</term>
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<term>Liver</term>
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<div type="abstract" xml:lang="en">Respiratory infections such as SARS-CoV in humans are often accompanied by mild and self-limiting hepatitis. As a respiratory disease, influenza A virus (IAV) infection can lead to hepatitis, but the mechanism remains unclear. This study aimed to investigate the occurrence of hepatitis by establishing a model for infected mice for three different subtypes of respiratory IAVs (H1N1, H5N1, and H7N2). Histological analysis was performed, and results showed increase serum aminotransferase (ALT and AST) levels and evident liver injury on days 3 and 7, especially on day 5 post infection. Immunohistochemistry (IHC) results indicated a wide distribution of IAV's positive signals in the liver of infected mice. Real-time PCR results further revealed a similar viral titer to IHC that presented a remarkedly positive correlation with histology injury. All these data showed that the mouse model suitably contributed valuable information about the mechanism underlying the occurrence of hepatitis induced by respiratory influenza virus.</div>
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