alexa The Neuraminidase Inhibitor Peramivir Ameliorates Myocarditis Induced by Influenza A (H1n1pdm) Virus in a Murine Model | OMICS International | Abstract
ISSN: 2327-5073

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Research Article

The Neuraminidase Inhibitor Peramivir Ameliorates Myocarditis Induced by Influenza A (H1n1pdm) Virus in a Murine Model

Akira Ukimura1,2*, Yukimasa Ooi2,3 and Yumiko Kanzaki3

1Department of General Internal Medicine, Osaka Medical College, Takatsuki, Japan

2Infection Control Team, Osaka Medical College Hospital, Takatsuki, Japan

3Third Department of Internal Medicine, Osaka Medical College, Takatsuki, Japan

*Corresponding Author:
Akira Ukimura, MD, PhD
Department of General Internal Medicine
Osaka Medical College, Takatsuki, 569-8686, Japan
Tel: +81-72-683-1221
Fax: +81-72-684-7386
E-mail: [email protected]

Received date: March 13, 2015; Accepted date: May 21, 2015; Published date: May 28, 2015

Citation: Ukimura A, Ooi Y, Kanzaki Y (2015) The Neuraminidase Inhibitor Peramivir Ameliorates Myocarditis Induced by Influenza A (H1n1pdm) Virus in a Murine Model. Clin Microbiol 4:201. doi: 10.4172/2327-5073.1000201

Copyright: © 2015 Ukimura A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Severe influenza sometimes causes myocarditis. To analyze the effects of peramivir on influenza A (H1N1pdm) virus myocarditis, we investigated survival rates, cardiac function, histological findings and cytokine induction in murine influenza A (H1N1pdm) virus-induced myocarditis. Eight-week-old BALB/c male mice were infected intranasally with influenza A (H1N1pdm) virus, and then divided into 2 groups: control group, which was injected with saline; and peramivir-treatment group, which was treated with peramivir. Histological studies, echocardiograms and quantitative analysis of viral RNA and mRNA for inflammatory cytokines and adhesion molecules were performed. Treatment with peramivir led to a significant improvement in survival (p<0.01 vs. control group). Fractional shortening (FS) of peramivir-treatment group (44.7%, p<0.01) was significantly higher than that of control group (27.7%) on day 8. Histological examinations revealed localized myocarditis with lymphocyte infiltration, and myocarditis lesions were found in perivascular areas or associated with pericarditis; treatment with peramivir improved these findings. Quantity of influenza virus genome in heart and lung tissues was suppressed in peramivirtreatment group. The expression of cytokine and adhesion molecule mRNA was suppressed in peramivir-treatment group. Peramivir improved influenza A (H1N1pdm) virus-induced myocarditis.

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