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In vitro and in vivo effects of a long-acting anti-influenza agent CS-8958 (laninamivir octanoate, Inavir) against pandemic (H1N1) 2009 influenza viruses

Kubo, S.; Kakuta, M.; Yamashita, M.

Japanese Journal of Antibiotics 63(5): 337-346

2010

ISSN/ISBN: 0368-2781
PMID: 21268405
Document Number: 643497
Laninamivir is a novel neuraminidase inhibitor of influenza viruses and it has been reported that its prodrug, CS-8958 shows a long-lasting characteristics. Using viruses isolated in Nagasaki of pandemic (H1N1) 2009 influenza virus which cause pandemic in 2009, it was shown that laninamivir has a strong inhibitory activities against their neuraminidases and virus replication in cultured cells, and strong binding stability to the virus NA. Furthermore, a single intranasal administration of CS-8958 showed a superior reduction of virus load in lungs in mouse infection model. These suggest that CS-8958 will work as a long-acting neuraminidase inhibitor to an infection with pandemic (H1N1) 2009 influenza viruses as well.

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