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. 1985 Apr;403(4):344-7.
doi: 10.1007/BF00589244.

Inhibition of carbonic anhydrase in dog plasma

P Rispens, J Hessels, A Zwart, W G Zijlstra

Inhibition of carbonic anhydrase in dog plasma

P Rispens et al. Pflugers Arch. 1985 Apr.

Abstract

Using a pH stat method, we measured the activity of carbonic anhydrase (CA) from dog erythrocytes in the presence of various amounts of dog plasma. A plasma factor appeared to be able to inhibit about 86% of the total CA activity, corresponding to the relative activity of CA II. Naiodoacetate was shown to inhibit the total CA activity up to about 13%, corresponding to the relative activity of CA I. C1- inhibited the total CA activity up to about 20%, presumably mainly through its strong influence on Ca I. It is concluded that with a degree of haemolysis of up to 3%, no appreciable plasma CA activity will occur.

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