Фармакокинетика и Фармакодинамика (Oct 2019)

The Study of [3H]-Cycloprolylglycine Pharmacokinetics in Rat Blood

  • G. I. Kovalev,
  • Yu. A. Zolotarev,
  • A. K. Dadayan,
  • S. I. Shram,
  • A. A. Abdullina,
  • E. V. Vasileva,
  • G. B. Kolyvanov,
  • V. P. Zherdev

DOI
https://doi.org/10.24411/2587-7836-2018-10024.
Journal volume & issue
Vol. 0, no. 3
pp. 48 – 56

Abstract

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Resume. The objective of this study is to evaluate pharmacokinetic parameters of tritium-labeled cycloprolylglycine [3H] -CPG following intravenous bolus administration of 5.7 μg (2 mCi). [3H] -CPG was prepared by solid-state catalytic isotopic exchange with spillover-tritium. It was found that plasma concentration-time profile of [3H] -CPG is adequately fit by a two-compartment model. The pharmacokinetic parameter estimates revealed rapid а-phase (distribution phase) (T1/2α min) followed by a slower β-phase of elimination (T1/2β 80 min). These findings are consistent with previous results of pharmacokinetic study of CPG as a noopept metabolite. CPG is differ significantly from other therapeutic peptides in pharmacokinetic profile (T1/2 , MRT, etc), which implies that CPG has a more prolonged duration of action.

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