Me. Ibarrarubio et al., EFFECT OF CHLORIDE AND DIAMIDE ON SERUM ANGIOTENSIN I-CONVERTING ENZYME-ACTIVITY FROM 8 MAMMALIAN-SPECIES, Comparative biochemistry and physiology. C. Comparative pharmacologyand toxicology, 106(2), 1993, pp. 495-501
1. The effect of chloride on serum angiotensin 1-converting enzyme (AC
E) activity was characterized in eight mammalian species: dog, guinea
pig, hamster, human, mouse, rabbit, rat, and sheep. 2. Optimum chlorid
e concentrations varied from 300 mM for rabbit to 1700 mM for hamster.
3. The increments with these optimum concentrations with respect to 1
00 mM chloride concentration were from 1.4-fold in rabbit to 7.9-fold
in hamster and dog. 4. There was no correlation between serum chloride
concentration or serum ACE activity and optimum chloride concentratio
n. 5. Serum ACE increased only in humans with diamide pretreatment sug
gesting the presence of endogenous inhibitors.