Evaluation of the Interactions between Human Serum Albumin (HSA) and Non-Steroidal Anti-Inflammatory (NSAIDs) Drugs by Multiwavelength Molecular Fluorescence, Structural and Computational Analysis

• DOI: 10.3390/ph14030214
• Publication Date: 2021-03-05T05:39:07Z
• Authors: Susana Amézqueta; José Luís Beltrán; Anna Maria Bolioli; Lluís Campos-Vicens; Francisco Javier ...; Clara Ràfols
• Keywords: Drug-nutrient interactions; 0303 health sciences; molecular modeling; R; fluorescence quenching; Interaccions medicament-nutrient; fluorescence multiwavelength data treatment; Antiinflamatoris no esteroïdals; Article; 3. Good health; RS1-441; 03 medical and health sciences; Pharmacy and materia medica; human serum albumin; Nonsteroidal anti-inflammatory agents; non-steroidal anti-inflammatory drugs; Medicine; drug-protein interactions

The interaction between drugs and transport proteins, such as albumins, is a key factor in drug bioavailability. One of the techniques commonly used for the evaluation of the drug-protein complex formation is fluorescence. This work studies the interaction of human serum albumin (HSA) with four non-steroidal anti-inflammatory drugs (NSAIDs)—ibuprofen, flurbiprofen, naproxen, and diflunisal—by monitoring the fluorescence quenching when the drug-albumin complex is formed. Two approaches—the double logarithm Stern-Volmer equation and the STAR program—are used to evaluate the binding parameters. The results are analyzed considering the binding properties, determined by using other complementary techniques and the available structural information of albumin complexes with NSAID-related compounds. Finally, this combined analysis has been synergistically used to interpret the binding of flurbiprofen to HSA.