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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Virol
2012 ; 86
(11
): 6055-66
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Integrated clinical, pathologic, virologic, and transcriptomic analysis of H5N1
influenza virus-induced viral pneumonia in the rhesus macaque
#MMPMID22491448
Shinya K
; Gao Y
; Cilloniz C
; Suzuki Y
; Fujie M
; Deng G
; Zhu Q
; Fan S
; Makino A
; Muramoto Y
; Fukuyama S
; Tamura D
; Noda T
; Eisfeld AJ
; Katze MG
; Chen H
; Kawaoka Y
J Virol
2012[Jun]; 86
(11
): 6055-66
PMID22491448
show ga
Viral pneumonia has been frequently reported during early stages of influenza
virus pandemics and in many human cases of highly pathogenic avian influenza
(HPAI) H5N1 virus infection. To better understand the pathogenesis of this
disease, we produced nonlethal viral pneumonia in rhesus macaques by using an
HPAI H5N1 virus (A/Anhui/2/2005; referred to as Anhui/2). Infected macaques were
monitored for 14 days, and tissue samples were collected at 6 time points for
virologic, histopathologic, and transcriptomic analyses. Anhui/2 efficiently
replicated in the lung from 12 h to 3 days postinfection (p.i.) and caused
temporal but severe pneumonia that began to resolve by day 14. Lung
transcriptional changes were first observed at 6 h, and increased expression of
vascular permeability regulators and neutrophil chemoattractants correlated with
increased serum leakage and neutrophil infiltration in situ. Additional
inflammatory, antiviral, and apoptotic genes were upregulated from 12 h,
concurrent with viral antigen detection and increasing immune cell populations. A
shift toward upregulation of acquired immunity was apparent after day 6.
Expression levels of established immune cell molecular markers revealed
remarkable similarity with pathological findings, indicating early and robust
neutrophil infiltration, a slight delay in macrophage accumulation, and abundant
late populations of T lymphocytes. We also characterized the putative mechanisms
regulating a unique, pneumonia-associated biphasic fever pattern. Thus, this
study is the first to use a comprehensive and integrative approach to delineate
specific molecular mechanisms regulating influenza virus-induced pneumonia in
nonhuman primates, an important first step toward better management of human
influenza virus disease.
|*Transcriptome
[MESH]
|Animals
[MESH]
|Disease Models, Animal
[MESH]
|Female
[MESH]
|Histocytochemistry
[MESH]
|Influenza A Virus, H5N1 Subtype/*pathogenicity
[MESH]