Serum Albumin Complexation of Acetylsalicylic Acid Metabolites

Title: Serum Albumin Complexation of Acetylsalicylic Acid Metabolites

Volume: 10 Issue: 5

Author(s): Wiktor Jurkowski, Grzegorz Porebski, Krystyna Obtulowicz and Irena Roterman

Affiliation:

Keywords: Acetylsalicylic acid, drug hypersensitivity, molecular docking, molecular dynamics, cross-linking

Abstract: One possible origin of the type I hypersensitivity reaction is reaction of drugs such as acetylsalicylic acid and its metabolites being complexed with human serum albumin. Albumin, being transporting molecule abundant in blood plasma is able to bind large array of ligands varying from small single carbon particles to long hydrophobic tailed lipidic acids (e.g. myristic acid). This non specificity is possible because of multi domain scaffold and large flexibility of inter-domain loops, which results in serious reorientation of domains. Hypothesis that acetylsalicylic acid metabolites may play indirect role in activation of allergic reaction has been tested. Binding of acetylsalicylic acid metabolites in intra-domain space causes significant increase of liability of domains IIIA and IIIB. One of metabolites, salicyluric acid, once is bound causes distortion and partial unfolding of helices in domains IA, IIB and IIIB. Changed are both directions and amplitude of relative motions as well as intra-domain distances. In result albumin is able to cross-link of adjacent IgE receptors which subsequently starts allergic reaction.

Cite this article as:

Jurkowski Wiktor, Porebski Grzegorz, Obtulowicz Krystyna and Roterman Irena, Serum Albumin Complexation of Acetylsalicylic Acid Metabolites, Current Drug Metabolism 2009; 10 (5) . https://dx.doi.org/10.2174/138920009788897984