P-glycoprotein functional activity in «soviet chinchilla» rabbits during pregnancy
- Authors: Popova N.M.1, Shchulkin A.V.1, Chernykh I.V.1, Esenina A.S.1, Gradinar M.M.1, Nikiforova L.V.1, Ryabkov A.N.1, Yakusheva E.N.1
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Affiliations:
- Ryazan State Medical University
- Issue: Vol 26, No 4 (2018)
- Pages: 466-473
- Section: Original study
- URL: https://journals.rcsi.science/pavlovj/article/view/10842
- DOI: https://doi.org/10.23888/PAVLOVJ2018264466-473
- ID: 10842
Cite item
Abstract
P-glycoprotein (Pgp, ABCB1-protein) is a membrane transporter protein that plays the key role in pharmacokinetics of drugs with a broad spectrum of action. Substrates of this transporter are some medical drugs (antibacterial, antiretroviral, hypotensive) that are prescribed to pregnant women for long-term intake, sometimes throughout the whole gestation period.
Aim to study the activity of Pgp on the organism level in rabbits of Soviet Chinchilla breed in pregnancy.
Materials and Methods. The study was performed on 21 Soviet Chinchilla female rabbits (3000-3500 g). The animals were divided into 3 series. The first series (n=6) included rabbits with 7 days of pregnancy; the second series (n=5) − animals with 14 days of pregnancy; the third series (n=10) − rabbits with 21 days of pregnancy. 7 Days before the study and in the indicated gestation periods, functional activity of Pgp was assessed by the pharmacokinetics of marker transporter substrate – fexofenadine, after its single oral introduction (67.5 mg/kg). Besides, serum concentrations of progesterone, estradiol, testosterone and prolactin were determined by radio immune method
Results. In all the studied gestational periods, serum concentrations of estradiol, testosterone and prolactin did not significantly differ from those before pregnancy, but the level of progesterone in blood serum was significantly elevated above the norm. On the 7th day of pregnancy pharmacokinetic parameters of fexofenadine did not show any reliable changes as compared to the initial va-lues. On the 14th day of pregnancy a reliable increase in Cmax, AUC0-t, T1/2 of fexofenadine was noted as compared to the parameters before pregnancy, which indicates a decrease in Pgp functional activity on the organism level. On the 21st day of pregnancy Cmax of fexofenadine remained elevated. Other pharmacokinetic parameters of fexofenadine did not show reliable changes. Conclusion. Reduction in Pgp functional activity, determined by the pharmacokinetics of its marker substrate (fexofenadine), was noted in rabbits of Soviet Chinchilla breed on the 14th and 21st days of pregnancy with the underlying significant increase in progesterone level.
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##article.viewOnOriginalSite##About the authors
Natalia M. Popova
Ryazan State Medical University
Author for correspondence.
Email: p34-66@yandex.ru
ORCID iD: 0000-0002-5166-8372
SPIN-code: 7553-9852
ResearcherId: B-1130-2016
MD, PhD, Senior Teacher of Pharmacology Department with Course of Pharmacy of Continuing Professional Education Faculty
Russian Federation, 9,Vysokovoltnaja,Ryazan,390026Aleksey V. Shchulkin
Ryazan State Medical University
Email: vestnik@rzgmu.ru
ORCID iD: 0000-0003-1688-0017
SPIN-code: 2754-1702
ResearcherId: N-9143-2016
MD, PhD, Assistant Professor of Pharmacology Department with Course of Pharmacy of Continuing Professional Education Faculty
Russian Federation, 9,Vysokovoltnaja,Ryazan,390026Ivan V. Chernykh
Ryazan State Medical University
Email: vestnik@rzgmu.ru
ORCID iD: 0000-0002-5618-7607
SPIN-code: 5238-6165
ResearcherId: 1389-2017
PhD in Biological sciences, Assistant of the Department of General Chemistry and Pharmachemistry
Russian Federation, 9,Vysokovoltnaja,Ryazan,390026Anna S. Esenina
Ryazan State Medical University
Email: vestnik@rzgmu.ru
ORCID iD: 0000-0002-3984-8979
ResearcherId: k-3849-2018
Student
Russian Federation, 9,Vysokovoltnaja,Ryazan,390026Maria M. Gradinar
Ryazan State Medical University
Email: vestnik@rzgmu.ru
ORCID iD: 0000-0002-2246-4127
ResearcherId: k-3854-2018
Student
Russian Federation, 9,Vysokovoltnaja,Ryazan,390026Larisa V. Nikiforova
Ryazan State Medical University
Email: vestnik@rzgmu.ru
ORCID iD: 0000-0003-4369-0729
SPIN-code: 8735-8565
ResearcherId: Х-6868-2018
MD, Senior Researcher of Central Research Laboratory
Russian Federation, 9,Vysokovoltnaja,Ryazan,390026Alexander N. Ryabkov
Ryazan State Medical University
Email: p34-66@yandex.ru
ORCID iD: 0000-0003-4705-747X
ResearcherId: S-1779-2016
MD, PhD, Assistant Professor of Pharmacology Department with Course of Pharmacy of Continuing Professional Education Faculty
Russian Federation, 9,Vysokovoltnaja,Ryazan,390026Elena N. Yakusheva
Ryazan State Medical University
Email: p34-66@yandex.ru
ORCID iD: 0000-0001-6887-4888
SPIN-code: 2865-3080
ResearcherId: T-6343-2017
MD, PhD, Professor, Head of Pharmacology Department with Course of Pharmacy of Conti-nuing Professional Education Faculty
Russian Federation, 9,Vysokovoltnaja,Ryazan,390026References
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