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2016 ; 20
(5
): 539-45
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gab.com Text
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Nafamostat mesilate promotes endothelium-dependent vasorelaxation via the
Akt-eNOS dependent pathway
#MMPMID27610041
Choi S
; Kwon HJ
; Song HJ
; Choi SW
; Nagar H
; Piao S
; Jung SB
; Jeon BH
; Kim DW
; Kim CS
Korean J Physiol Pharmacol
2016[Sep]; 20
(5
): 539-45
PMID27610041
show ga
Nafamostat mesilate (NM), a synthetic serine protease inhibitor, has
anticoagulant and anti-inflammatory properties. The intracellular mediator and
external anti-inflammatory external signal in the vascular wall have been
reported to protect endothelial cells, in part due to nitric oxide (NO)
production. This study was designed to examine whether NM exhibit endothelium
dependent vascular relaxation through Akt/endothelial nitric oxide synthase
(eNOS) activation and generation of NO. NM enhanced Akt/eNOS phosphorylation and
NO production in a dose- and time-dependent manner in human umbilical vein
endothelial cells (HUVECs) and aorta tissues obtained from rats treated with
various concentrations of NM. NM concomitantly decreased arginase activity, which
could increase the available arginine substrate for NO production. Moreover, we
investigated whether NM increased NO bioavailability and decreased aortic
relaxation response to an eNOS inhibitor in the aorta. These results suggest that
NM increases NO generation via the Akt/eNOS signaling pathway, leading to
endothelium-dependent vascular relaxation. Therefore, the vasorelaxing action of
NM may contribute to the regulation of cardiovascular function.