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2017 ; 129
(18
): 2547-2556
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
Depletion of coagulation factor XII ameliorates brain pathology and cognitive
impairment in Alzheimer disease mice
#MMPMID28242605
Chen ZL
; Revenko AS
; Singh P
; MacLeod AR
; Norris EH
; Strickland S
Blood
2017[May]; 129
(18
): 2547-2556
PMID28242605
show ga
Vascular abnormalities and inflammation are found in many Alzheimer disease (AD)
patients, but whether these changes play a causative role in AD is not clear. The
factor XII (FXII) -initiated contact system can trigger both vascular pathology
and inflammation and is activated in AD patients and AD mice. We have
investigated the role of the contact system in AD pathogenesis. Cleavage of
high-molecular-weight kininogen (HK), a marker for activation of the inflammatory
arm of the contact system, is increased in a mouse model of AD, and this cleavage
is temporally correlated with the onset of brain inflammation. Depletion of FXII
in AD mice inhibited HK cleavage in plasma and reduced neuroinflammation,
fibrinogen deposition, and neurodegeneration in the brain. Moreover,
FXII-depleted AD mice showed better cognitive function than untreated AD mice.
These results indicate that FXII-mediated contact system activation contributes
to AD pathogenesis, and therefore this system may offer novel targets for AD
treatment.