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2014 ; 111
(2
): 769-74
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Early hypercytokinemia is associated with interferon-induced transmembrane
protein-3 dysfunction and predictive of fatal H7N9 infection
#MMPMID24367104
Wang Z
; Zhang A
; Wan Y
; Liu X
; Qiu C
; Xi X
; Ren Y
; Wang J
; Dong Y
; Bao M
; Li L
; Zhou M
; Yuan S
; Sun J
; Zhu Z
; Chen L
; Li Q
; Zhang Z
; Zhang X
; Lu S
; Doherty PC
; Kedzierska K
; Xu J
Proc Natl Acad Sci U S A
2014[Jan]; 111
(2
): 769-74
PMID24367104
show ga
A unique avian-origin A/H7N9 influenza virus has so far caused 134 cases with 44
deaths. Probing the host factors contributing to disease severity, we found that
lower levels of plasma inflammatory cytokines on hospital admission correlated
with faster recovery in 18 patients with A/H7N9 influenza virus, whereas high
concentrations of (in particular) IL-6, IL-8, and macrophage inflammatory
protein-1? were predictive of a less favorable or fatal outcome. Analysis of
bronchoalveolar lavage samples showed up to 1,000-fold greater cytokine/chemokine
levels relative to plasma. Furthermore, patients with the rs12252-C/C IFN-induced
transmembrane protein-3 (IFITM3) genotype had more rapid disease progression and
were less likely to survive. Compared with patients with the rs12252-T/T or
rs12252-T/C genotype of IFITM3, patients with the C/C genotype had a shorter time
from disease onset to the time point when they sought medical aid (hospital
admission or antiviral therapy) and a shorter interval to development of the
acute respiratory distress syndrome stage (reflected by shorter intervals between
clinical onset and methylprednisolone treatments and higher rates of mechanical
ventilator use), as well as experiencing elevated/prolonged lung virus titers and
cytokine production and higher mortality. The present analysis provides reported
data on the H7N9 influenza-induced "cytokine storm" at the site of infection in
humans and identifies the rs12252-C genotype that compromises IFITM3 function as
a primary genetic correlate of severe H7N9 pneumonia. Together with rs12252
sequencing, early monitoring of plasma cytokines is thus of prognostic value for
the treatment and management of severe influenza pneumonia.