A derivative of vitamin B3 applied several days after exposure reduces lethality of severely irradiated mice
Abstract Most, if not all, of the hitherto tested substances exert more or less pronounced pro-survival effects when applied before or immediately after the exposure to high doses of ionizing radiation. In the present study we demonstrate for the first time that 1-methyl nicotinamide (MNA), a deriva...
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oai:doaj.org-article:c83dc100732c40d3997195b5dd358f9f2021-12-02T14:26:13ZA derivative of vitamin B3 applied several days after exposure reduces lethality of severely irradiated mice10.1038/s41598-021-86870-32045-2322https://doaj.org/article/c83dc100732c40d3997195b5dd358f9f2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86870-3https://doaj.org/toc/2045-2322Abstract Most, if not all, of the hitherto tested substances exert more or less pronounced pro-survival effects when applied before or immediately after the exposure to high doses of ionizing radiation. In the present study we demonstrate for the first time that 1-methyl nicotinamide (MNA), a derivative of vitamin B3, significantly (1.6 to 1.9 times) prolonged survival of BALB/c mice irradiated at LD30/30 (6.5 Gy), LD50/30 (7.0 Gy) or LD80/30 (7.5 Gy) of γ-rays when the MNA administration started as late as 7 days post irradiation. A slightly less efficient and only after the highest dose (7.5 Gy) of γ-rays was another vitamin B3 derivative, 1-methyl-3-acetylpyridine (1,3-MAP) (1.4-fold prolonged survival). These pro-survival effects did not seem to be mediated by stimulation of haematopoiesis, but might be related to anti-inflammatory and/or anti-thrombotic properties of the vitamin B3 derivatives. Our results show that MNA may represent a prototype of a radioremedial agent capable of mitigating the severity and/or progression of radiation-induced injuries when applied several hours or days after exposure to high doses of ionizing radiation.Aneta ChedaEwa M. NowosielskaJerzy GebickiAndrzej MarcinekStefan ChlopickiMarek K. JaniakNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021) |
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Medicine R Science Q Aneta Cheda Ewa M. Nowosielska Jerzy Gebicki Andrzej Marcinek Stefan Chlopicki Marek K. Janiak A derivative of vitamin B3 applied several days after exposure reduces lethality of severely irradiated mice |
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Abstract Most, if not all, of the hitherto tested substances exert more or less pronounced pro-survival effects when applied before or immediately after the exposure to high doses of ionizing radiation. In the present study we demonstrate for the first time that 1-methyl nicotinamide (MNA), a derivative of vitamin B3, significantly (1.6 to 1.9 times) prolonged survival of BALB/c mice irradiated at LD30/30 (6.5 Gy), LD50/30 (7.0 Gy) or LD80/30 (7.5 Gy) of γ-rays when the MNA administration started as late as 7 days post irradiation. A slightly less efficient and only after the highest dose (7.5 Gy) of γ-rays was another vitamin B3 derivative, 1-methyl-3-acetylpyridine (1,3-MAP) (1.4-fold prolonged survival). These pro-survival effects did not seem to be mediated by stimulation of haematopoiesis, but might be related to anti-inflammatory and/or anti-thrombotic properties of the vitamin B3 derivatives. Our results show that MNA may represent a prototype of a radioremedial agent capable of mitigating the severity and/or progression of radiation-induced injuries when applied several hours or days after exposure to high doses of ionizing radiation. |
format |
article |
author |
Aneta Cheda Ewa M. Nowosielska Jerzy Gebicki Andrzej Marcinek Stefan Chlopicki Marek K. Janiak |
author_facet |
Aneta Cheda Ewa M. Nowosielska Jerzy Gebicki Andrzej Marcinek Stefan Chlopicki Marek K. Janiak |
author_sort |
Aneta Cheda |
title |
A derivative of vitamin B3 applied several days after exposure reduces lethality of severely irradiated mice |
title_short |
A derivative of vitamin B3 applied several days after exposure reduces lethality of severely irradiated mice |
title_full |
A derivative of vitamin B3 applied several days after exposure reduces lethality of severely irradiated mice |
title_fullStr |
A derivative of vitamin B3 applied several days after exposure reduces lethality of severely irradiated mice |
title_full_unstemmed |
A derivative of vitamin B3 applied several days after exposure reduces lethality of severely irradiated mice |
title_sort |
derivative of vitamin b3 applied several days after exposure reduces lethality of severely irradiated mice |
publisher |
Nature Portfolio |
publishDate |
2021 |
url |
https://doaj.org/article/c83dc100732c40d3997195b5dd358f9f |
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