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2004 ; 78
(19
): 10420-32
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Integration of clinical data, pathology, and cDNA microarrays in influenza
virus-infected pigtailed macaques (Macaca nemestrina)
#MMPMID15367608
Baskin CR
; García-Sastre A
; Tumpey TM
; Bielefeldt-Ohmann H
; Carter VS
; Nistal-Villán E
; Katze MG
J Virol
2004[Oct]; 78
(19
): 10420-32
PMID15367608
show ga
For most severe viral pandemics such as influenza and AIDS, the exact
contribution of individual viral genes to pathogenicity is still largely unknown.
A necessary step toward that understanding is a systematic comparison of
different influenza virus strains at the level of transcriptional regulation in
the host as a whole and interpretation of these complex genetic changes in the
context of multifactorial clinical outcomes and pathology. We conducted a study
by infecting pigtailed macaques (Macaca nemestrina) with a genetically
reconstructed strain of human influenza H1N1 A/Texas/36/91 virus and hypothesized
not only that these animals would respond to the virus similarly to humans, but
that gene expression patterns in the lungs and tracheobronchial lymph nodes would
fit into a coherent and complete picture of the host-virus interactions during
infection. The disease observed in infected macaques simulated uncomplicated
influenza in humans. Clinical signs and an antibody response appeared with
induction of interferon and B-cell activation pathways, respectively.
Transcriptional activation of inflammatory cells and apoptotic pathways coincided
with gross and histopathological signs of inflammation, with tissue damage and
concurrent signs of repair. Additionally, cDNA microarrays offered new evidence
of the importance of cytotoxic T cells and natural killer cells throughout
infection. With this experiment, we confirmed the suitability of the nonhuman
primate model in the quest for understanding the individual and joint
contributions of viral genes to influenza virus pathogenesis by using cDNA
microarray technology and a reverse genetics approach.