Aspartate Aminotransferase
The hindrance of serum alanine and aspartate aminotransferases (SALT and SAST) by anandamide in vitro was contemplated. The outcomes demonstrated that both SALT and SAST were intensely restrained by anandamide and the enzymes regained their strength by dialysis, showing that the inhibitory impact of anandamide is reversible. The hindrance of both SALT and SAST by anandamide was observed to be moderate and demonstrated the normal for a first request response up to 30 minutes. The rate constants portraying this inhibition, in particular: the binding constant (KB) (90 µM and 255 µM for SALT and SAST individually) and bimolecular inhibition constant ki (533 and 571 (M. min)–1 for SALT and SAST respectively) were resolved. kcat (rate ... Show more content on Helpwriting.net ...(12)
The aim of this work is to study the effect of anandamide on the activities of SALT and SAST as these two enzymes are of great value as liver function tests.
Kinetic measurements were carried out to evaluate its inhibitory power, such as bimolecular inhibition constant, affinity constant, amidation rate as well as the type of inhibition of SALT and SAST by anandamide.
MATERIALS AND METHODS
Chemicals were purchased from Aldrich chem. Co. England. Fresh human serum (obtained from Medical Research Institute Blood Bank) was used as source of the enzymes. The enzymes SALT and SAST activities were assayed by the method of Reitman and Frankel.(13) In this method; the keto acid formed were measured colourimetricaly after combination with 2,4–dinitrophenyl hydrazine, then the hydrazone formed was measured at 530
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