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2017 ; 8
(54
): 92578-92588
Nephropedia Template TP
gab.com Text
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Early antagonism of cerebral high mobility group box-1 protein is benefit for
sepsis induced brain injury
#MMPMID29190939
Ren C
; Tong YL
; Li JC
; Dong N
; Hao JW
; Zhang QH
; Yao YM
Oncotarget
2017[Nov]; 8
(54
): 92578-92588
PMID29190939
show ga
Sepsis induced brain injury acts as an acute complication and accounts for
deterioration and high mortality rate of septic condition. HMGB1 is a late
inflammatory mediator that plays a critical role in brain dysfunction and
diseases. However, the role of HMGB1 in sepsis induced brain dysfunction remains
intricate. The current study investigated the effect of HMGB1 on brain injury in
septic mice model with intracerebroventricular injection of BoxA (a specific
antagonist of HMGB1). The expression of HMGB1, morphological changes of brain
tissues, apoptosis of brain cells, and alteration of behavior were determined.
The expressions of HMGB1 in cortex, hippocampus, and striatum were significantly
enhanced in the sepsis group when compared with the sham group. In septic
conditions, brain tissues showed significant abnormalities in tissue structure,
and increased apoptosis of brain cells which was caspase-3 dependent. Septic mice
showed suppression of locomotor activity and impairment of memory and learning.
Neutralizing brain HMGB1 significantly improved brain injury and apoptosis of
brain cells, and further ameliorated disturbed locomotor activities and damaged
memory and learning. However, no significant improvement of survival rate was
seen after inhibiting central HMGB1. These results reveal that HMGB1 is a
potential target for ameliorating sepsis induced brain injury with early
antagonizing.