Plasma proteins such as human serum albumin (HSA) and alpha 1-acid glycoprotein (AGP) play an important role in the pharmacokinetic and pharmacodynamic properties of all endogenous or exogenous substances presented in the blood vessels. Their abundance in human blood not only helps to maintain hemostasis, but also makes them ideal candidates as transporters or possible depot reservoirs. Numerous methods e.g. equilibrium dialysis, ultrafiltration. ultracentrifugation, high-performance affinity chromatography were introduced to determine potential interactions with plasma proteins and possible quantification.In this work method was developed for the determination of drug-human serum albumin interactions and applied to obtain pharmacokinetic profile of AChE modulators prepared at the Faculty of Military Health Sciences. For method validation commercially used compounds HI-6 and obidoxime were chosen. HI-6 did not bind at all while obidoxime showed 7 % binding potency.

Keywords: human serum albumin; alpha 1-acid glycoprotein; plasma proteins; acetylcholinreactivators; drug-protein interaction