Effect of 4'-chloro-5-methoxy-3-biphenylylacetic acid (DKA-9) on prostaglandin synthetase
- PMID: 6774739
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Effect of 4'-chloro-5-methoxy-3-biphenylylacetic acid (DKA-9) on prostaglandin synthetase
Arzneimittelforschung.
1980.
Abstract
4'-Chloro-5-methoxy-3-biphenylylacetic acid (DKA-9) was evaluated for its ability to inhibit the conversion of arachidonic acid into prostaglandin E2 and the oxygen uptake on arachidonic acid by sheep seminal vesicle microsomes. DKA-9 inhibited equally the formation of prostaglandin E2 and oxygen uptake at 20 mumol/l or more in a concentration-dependent manner, which suggests a blockade of prostaglandin endoperoxide formation. DKA-9 did not promote time-dependent inactivation of the enzyme and inhibited the enzyme competitively with respect to substrate. Thus, it behaved as a reversible and competitive inhibitor.
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