Abstract:The interaction of sulphamethazine (SMZ) with pig plasma proteins and albumin was studied by ultrafiltration and equilibrium dialysis. Binding to pig plasma proteins was monophasic (affinity approximately 9.0 mol/L x 10(3)) and the main binding protein was albumin. At 37 degrees C and pH 7.4, the affinity of SMZ for albumin was about 8.0 mol/L x 10(3) and the number of binding sites was estimated as 1.4. Increasing the temperature from 4 to 45 degrees C resulted in a seven-fold decrease in affinity, and increa… Show more
Use of this model enabled accurate prediction of sulfamethazine pharmacokinetics in swine and has applications for food safety and prediction of drug residues in edible tissues.
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