Characterization of paracetamol binding with normal and glycated human serum albumin assayed by a new electrochemical method

Journal of the Brazilian Chemical Society

Ganjali, Mohammad Reza¹  University of Tehran¹  University of Wisconsin, Madison, USA¹  Daneshegar, Parandis¹  Norouzi, Parviz¹  Sheibanid, Nader¹  University of Tehran, Tehran, Iran¹  Moosavi-Movahedi, Ali Akbar¹  Farhadi, Mohammad¹  University of Medical Sciences, Tehran, Iran¹ 

关键词: continuous cyclic voltammetry;    glycated human serum albumin;    paracetamol;    binding study;   

DOI  :  10.1590/S0103-50532012000200018

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

In the present study the interactions between paracetamol (PC) and human serum albumin, in non-glycated (HSA) and glycated form (GHSA), were investigated using continuous cyclic voltammetry in acetate buffer pH 7.4. The results showed lack of significant changes in formal potential E0 and electrode reaction constant rate, ks, of PC. The decay in the drug current, after the addition of protein, showed a decrease in free drug concentration and formation of a biocomplex. The contentious coulometry was also used to determine the binding parameters. The binding constant and binding ratio for HSA and GHSA were 2.0×104 and 7.8×103 mol L-1, respectively, and the number of binding was 2:1 for HSA-PC and 1:1 for GHSA-PC. These results were confirmed by UV-Vis spectroscopy. Thus, the new electrochemical analysis method described here provides an easy and fast method for evaluation of drug-protein interactions with significant clinical implication in diabetes.

【 授权许可】

Unknown