Nafamostat Mesilate Is an Extremely Potent Inhibitor of Human Tryptase

Previously, nafamostat mesilate was found to be a potent inhibitor of human tryptase. In present study, we performed a kinetic study to determine its Ki value for tryptase and compared it with that of gabexate mesilate. Nafamostat mesilate inhibited human tryptase in a competitive manner. The appare...

Full description

Bibliographic Details
Main Authors: Shuji Mori, Yoshinori Itoh, Ryoko Shinohata, Toshiaki Sendo, Ryozo Oishi, Masahiro Nishibori
Format: Article
Language:English
Published: Elsevier 2003-01-01
Series:Journal of Pharmacological Sciences
Online Access:http://www.sciencedirect.com/science/article/pii/S1347861319326416
Description
Summary:Previously, nafamostat mesilate was found to be a potent inhibitor of human tryptase. In present study, we performed a kinetic study to determine its Ki value for tryptase and compared it with that of gabexate mesilate. Nafamostat mesilate inhibited human tryptase in a competitive manner. The apparent Ki value was estimated to be 95.3 pM, which was 1,000 times lower than that of gabexate mesilate (95.1 nM). These results strongly indicated that nafamostat mesilate is an extremely potent inhibitor of tryptase and suggested that some of its beneficial effects in the treatment of clinical status may be due to tryptase inhibition.
ISSN:1347-8613