Hematopoietic parameters in acute irradiated mice treated with copolymer of N-vinylpyrrolidone and 2-methyl-5-vinylpyridine

«Radiation and Risk», 2016, vol. 25, No. 1, pp.65-75

Authors

Panov A.V.1 – Director of Science Dep., C. Sc., Chem. JSC «Institute of Pharmaceutical Technology», Moscow, Russia.
Kedik S.A.1 – General Manager, D.Sc., Tech., Prof. JSC «Institute of Pharmaceutical Technology», Moscow, Russia.
Yakovleva T.A.1 – Researcher. JSC «Institute of Pharmaceutical Technology», Moscow, Russia.
Izmestieva O.S. – Lead. Researcher, C. Sc., Biol. A. Tsyb MRRC, Obninsk, Russia.
Selivanova E.I. – Senior Researcher, C. Sc., Biol. A. Tsyb MRRC, Obninsk, Russia. Contacts: 4 Korolyov str., Obninsk, Kaluga region, Russia, 249036. Tel.: (484) 399-71-88; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. .
Zhavoronkov L.P. – Deputy Director, D.Sc., Med. A. Tsyb MRRC, Obninsk, Russia.

Abstract

In framework of this work we obtained the experimental data on hematopoiesis and viability of mice after acute irradiation with 7 and 8.5 Gy and measured the morphofunctional readings for peripheral blood cells and bone marrow under this condition. We investigated anti-radiation properties of Nvinylpyrrolidone and 2-methyl-5-vinylpyridine copolymer using the intramuscular injection (dose 500 mg/kg) in two experimental scenarios: 20 minutes before and 20 minutes after irradiation with different intensity. We demonstrated anti-radiation effectiveness of copolymer compound using 280 C57B1/6j line male mice. The average life expectancy was increased by 40% for mice irradiated with absolutely lethal dose (8.5 Gy) .Copolymer increases bone marrow cellularity and absolute number of hematopoietic stem cells (7 Gy) in 5-6 time and leads to a significant release of mature and proliferating cells into blood stream. This study shows that the N-vinylpyrrolidone and 2-methyl- 5-vinylpyridine copolymer is radiomitigator, which acts via the activation of a number of proinflammatory signaling pathways and stimulates the secretion of hematopoietic growth factors.

Key words
Acute irradiation, copolymer of N-vinylpyrrolidone and 2-methyl-5-vinylpyridine, automatic Hematology analyzer, flow cytometer, mouse lines C57Bl/6j, leukocytes, granulocytes, hematopoietic stem cells, catalase, superoxide dismutase.

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