Plasma protein binding and blood to plasma partitioning studies of methamphetamine
AuthorLal, Ritu Anilkumar, 1968-
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PublisherThe University of Arizona.
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AbstractMethamphetamine is a sympathomimetic drug with CNS, cardiovascular and anorectic effects. We examined the Blood to Plasma (Blood/Plasma) partitioning and plasma protein binding (PB) of d-Methamphetamine (d-MAP), using whole rat blood. The mean Blood/Plasma ratio was around 1.2 and the fraction unbound (fᵤ) was 0.8. Further, we studied the influence of concentration, pH and the presence of 1-MAP on the Blood/Plasma ratio and PB of d-MAP. There was no significant change in the Blood/Plasma ratio and the PB values at different concentrations of d-MAP or in the presence of 1-MAP. There was a slight increase in the Blood/Plasma ratio and a slight but insignificant decrease in fᵤ with pH. The equilibrium binding constants (KA) of d-MAP with human serum albumin and α₁ -acid glycoprotein were also determined and they were found to be 213 and 2461 M⁻¹ respectively.
Degree ProgramGraduate College