Apoptosis and Pathogenesis of Avian Influenza A (H5N1) Virus in Humans

Uiprasertkul, Mongkol; Kitphati, Rungrueng; Puthavathana, Pilaipan; Kriwong, Romchat; Kongchanagul, Alita; Ungchusak, Kumnuan; Angkasekwinai, Suwimon; Chokephaibulkit, Kulkanya; Srisook, Kanittar; Vanprapar, Nirun; Auewarakul, Prasert

doi:10.3201/eid1305.060572

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Apoptosis and Pathogenesis of Avian Influenza A (H5N1) Virus in Humans

Published Date:

May 2007

Publisher's site:

http://dx.doi.org/10.3201/eid1305.060572

Source:

Emerg Infect Dis. 13(5):708-712.

[PDF-299.21 KB]

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Alternative Title:

Emerg Infect Dis

Personal Author:

Uiprasertkul, Mongkol ; Kitphati, Rungrueng ; Puthavathana, Pilaipan ; Kriwong, Romchat ; Kongchanagul, Alita ; ... More ▼

Description:

The pathogenesis of avian influenza A (H5N1) virus in humans has not been clearly elucidated. Apoptosis may also play an important role. We studied autopsy specimens from 2 patients who died of infection with this virus. Apoptosis was observed in alveolar epithelial cells, which is the major target cell type for the viral replication. Numerous apoptotic leukocytes were observed in the lung of a patient who died on day 6 of illness. Our data suggest that apoptosis may play a major role in the pathogenesis of influenza (H5N1) virus in humans by destroying alveolar epithelial cells. This pathogenesis causes pneumonia and destroys leukocytes, leading to leukopenia, which is a prominent clinical feature of influenza (H5N1) virus in humans. Whether observed apoptotic cells were a direct result of the viral replication or a consequence of an overactivation of the immune system requires further studies.

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Journal Article

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Emerging Infectious Diseases

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Apoptosis and Pathogenesis of Avian Influenza A (H5N1) Virus in Humans

Apoptosis and Pathogenesis of Avian Influenza A (H5N1) Virus in Humans

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