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Pharmacokinetics of dimeric dipeptide mimetic of nerve growth factor GK-2 in rats. Part 2. Kinetics of distribution in organs and tissues

https://doi.org/10.37489/2587-7836-2023-4-41-47

Abstract

Relevance. To introduce the GK-2 compound into clinical practice, it is necessary to conduct a preclinical study of its pharmacokinetics, in particular, the distribution of the studied drug in organs and tissues. The aim is to study the tissue availability of a new original compound GK-2 in rats after its intraperitoneal administration. Methods. Quantitative determination of GK-2 in blood plasma and organ/tissue homogenates of rats was carried out by high-performance liquid chromatography with mass spectrometric detection. Results. The distribution of GK-2 in organs and tissues with varying degrees of vascularization was studied in rats. It was found that after a single intraperitoneal injection of GK-2 at a dose of 150 mg/kg, the studied compound was recorded in blood plasma for 2 hours, its half-life (t1/2el) was 0.4 hours. In organs and tissues, GK-2 was detected from 1.5 to 2 hours. The tissue availability of GK-2 in the liver — blood plasma system was 18.68; "kidneys — blood plasma" — 1.26; "spleen — blood plasma" — 0.68; "skeletal muscles — blood plasma" — 0.31. For the target organ, the brain, the tissue availability was 0.24. In the brain, the time to reach the maximum concentration of GK-2 (0.77 mcg/g) was 0.34 hours. It was found that GK-2 is excreted more slowly from the brain (t1/2el was 0.75 h) than from other organs and tissues (from 0.31 h for the spleen and up to 0.47 h for the kidneys).

About the Authors

G. B. Kolyvanov
Federal Research Center for Innovator and Emerging Biomedical and Pharmaceutical Technologies
Russian Federation

Gennadiy B. Kolyvanov - Dr. Sci. in Biology, leading researcher of the laboratory of pharmacokinetics 

Moscow 



A. A. Litvin
Federal Research Center for Innovator and Emerging Biomedical and Pharmaceutical Technologies
Russian Federation

Alexander A. Litvin - Dr. Sci. in Biology, Leading researcher of the
laboratory of pharmacokinetics  

Moscow 



P. O. Bochkov
Federal Research Center for Innovator and Emerging Biomedical and Pharmaceutical Technologies
Russian Federation

Pavel O. Bochkov - PhD, Cand. Sci. (Biology), Senior Research Officer of laboratory pharmacokinetics 

Moscow 



O. Yu. Kravtsova
Federal Research Center for Innovator and Emerging Biomedical and Pharmaceutical Technologies
Russian Federation

Oxana Yu. Kravtsova - PhD, Cand. Sci. (Biology), senior research scientist of the laboratory of pharmacokinetics  

Moscow 



O. G. Gribakina
Federal Research Center for Innovator and Emerging Biomedical and Pharmaceutical Technologies
Russian Federation

Oxana G. Gribakina - PhD, Cand. Sci. (Biology), research scientist of the laboratory of pharmacokinetics 

Moscow 



P. Yu. Povarnina
Federal Research Center for Innovator and Emerging Biomedical and Pharmaceutical Technologies
Russian Federation

Polina Yu. Povarnina - PhD, Cand. Sci. (Biology), senior researcher of the Laboratory of peptide bioregulators of the Department of Drug Chemistry 

Moscow 



V. P. Zherdev
Federal Research Center for Innovator and Emerging Biomedical and Pharmaceutical Technologies
Russian Federation

Vladimir P. Zherdev - Dr. Sci. (Med.), professor, Head of laboratory pharmacokinetics
 

Moscow 



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Review

For citations:


Kolyvanov G.B., Litvin A.A., Bochkov P.O., Kravtsova O.Yu., Gribakina O.G., Povarnina P.Yu., Zherdev V.P. Pharmacokinetics of dimeric dipeptide mimetic of nerve growth factor GK-2 in rats. Part 2. Kinetics of distribution in organs and tissues. Pharmacokinetics and Pharmacodynamics. 2023;(4):41-47. (In Russ.) https://doi.org/10.37489/2587-7836-2023-4-41-47

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