Eiwit-geneesmiddelbinding: bepalingsmethoden

Protein-drug binding is determined through indirect and direct methods.

Indirect methods involve isolating the bound drug from its free form in biological samples such as blood, serum, or plasma to determine percentage binding.

These techniques include equilibrium dialysis for measuring free drug concentration at equilibrium and dynamic dialysis for assessing drug movement across a semi-permeable membrane.

Ultrafiltration, ultracentrifugation, and gel filtration can effectively separate the protein-bound drug from its free form.

In contrast, direct methods do not necessitate separating the bound drug form but estimate the characteristics of binding sites in pure protein solutions.

These methods include UV and fluorescence spectroscopy to determine the concentration of protein-bound drugs, and ion-selective electrodes to measure ion-protein binding.

Various plots, namely the direct plot, Scatchard plot, Klotz or Lineweaver–Burk plot, and Hitchcock plot, are utilized to analyze binding data.

These methods collectively provide valuable insights into the protein-drug interaction.