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2018 ; 13
(4
): e0195604
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English Wikipedia
Fasudil improves endothelial dysfunction in rats exposed to chronic intermittent
hypoxia through RhoA/ROCK/NFATc3 pathway
#MMPMID29641598
Li JR
; Zhao YS
; Chang Y
; Yang SC
; Guo YJ
; Ji ES
PLoS One
2018[]; 13
(4
): e0195604
PMID29641598
show ga
Endothelial dysfunction is one of the main pathological changes in Obstructive
sleep apnoea (OSA). The Rho kinase (ROCK) pathway is associated with endothelial
dysfunction. However, the interaction between ROCK and nuclear factor of
activated T cells isoform c3 (NFATc3) in the development of this pathological
response under chronic intermittent hypoxia (CIH) is unclear. To simulate the OSA
model, we established a moderate CIH rat model by administering the fraction of
inspired O2 (FiO2) from 21% to 9%, 20 times/h, 8 h/day for 3 weeks. Fasudil (ROCK
inhibitor, 8 mg/kg/d, i.p.) was administrated in the rats exposed to CIH for 3
weeks. Our results demonstrated that CIH caused significantly endothelial
dysfunction, accompanying with increased ET-1 level, decreased eNOS expression
and NO production, which reduced ACh-induced vascular relaxation responses.
Moreover, RhoA/ROCK-2/NFATc3 expressions were up-regulated. Fasudil significantly
improved CIH induced endothelial dysfunction. Data suggested that the ROCK
activation is necessary for endothelial dysfunction during CIH.