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Disruption of Endothelial Cell Homeostasis Plays a Key Role in the Early
Pathogenesis of Coronary Artery Abnormalities in Kawasaki Disease
#MMPMID28255175
Ueno K
; Ninomiya Y
; Hazeki D
; Masuda K
; Nomura Y
; Kawano Y
Sci Rep
2017[Mar]; 7
(?): 43719
PMID28255175
show ga
Disruption of endothelial cell homeostasis may be associated with the
pathogenesis of coronary artery abnormalities (CAA) in Kawasaki disease (KD). We
sought to clarify the poorly understood pathogenic role of endothelial cell
survival and death in KD vasculitis. Human umbilical vein endothelial cells
(HUVECs) stimulated with sera from KD patients, compared with sera from patients
with bacterial infections, exhibited significant increases in cytotoxicity, high
mobility group box protein 1 (HMGB-1), and caspase-3/7 and a decrease in
phosphorylated Akt/Akt (pAkt/Akt) ratios. HUVECs stimulated with sera from KD
patients treated with immunoglobulin (IG) showed significantly decreased
cytotoxicity, HMGB-1, and caspase-3/7 levels and increased pAkt/Akt ratios, as
compared with results for untreated HUVECs (P?0.001, P?=?0.008, P?=?0.040, and
P?0.001, respectively). In HUVECs stimulated with sera from KD patients, the
increased cytotoxicity levels and the suppression of increased pAkt/Akt ratios
after subsequent IG treatment were closely related to the development of CAA
(P?=?0.002 and P?=?0.035). Our data reveal that shifting the balance toward cell
death rather than survival appears to perturb endothelial cell homeostasis and is
closely related to the development of CAA. The cytoprotective effects of IG
treatment appear to ameliorate endothelial cell homeostasis.