Nitric oxide coordinates development of genomic instability in realization of combined effect with ionizing radiation
The aim of this study was to investigate the ability of environmental nitrogen oxides or natural nitric oxide (NO) donors to modify free radicals balance and development of genomic instability alone or in combination with ionizing radiation. Methods: Genotoxicity and cytogenetic abnormalities were...
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| Veröffentlicht in: | Experimental Oncology |
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| Datum: | 2013 |
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| Sprache: | Englisch |
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Інститут експериментальної патології, онкології і радіобіології ім. Р.Є. Кавецького НАН України
2013
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/139134 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Nitric oxide coordinates development of genomic instability in realization of combined effect with ionizing radiation / V.M. Mikhailenko, E.A. Diomina, I.I. Muzalov, B.I. Gerashchenko // Experimental Oncology. — 2013. — Т. 35, № 1. — С. 58-64. — Бібліогр.: 42 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862541720515772416 |
|---|---|
| author | Mikhailenko, V.M. Diomina, E.A. Muzalov, I.I. Gerashchenko, B.I. |
| author_facet | Mikhailenko, V.M. Diomina, E.A. Muzalov, I.I. Gerashchenko, B.I. |
| citation_txt | Nitric oxide coordinates development of genomic instability in realization of combined effect with ionizing radiation / V.M. Mikhailenko, E.A. Diomina, I.I. Muzalov, B.I. Gerashchenko // Experimental Oncology. — 2013. — Т. 35, № 1. — С. 58-64. — Бібліогр.: 42 назв. — англ. |
| collection | DSpace DC |
| container_title | Experimental Oncology |
| description | The aim of this study was to investigate the ability of environmental nitrogen oxides or natural nitric oxide (NO) donors to modify free radicals balance and development of genomic instability alone or in combination with ionizing radiation. Methods: Genotoxicity and cytogenetic abnormalities were assessed in vitro in peripheral blood lymphocytes (PBL) isolated from healthy humans or in vivo in rats PBL. Human PBL were treated with physiologically relevant NO donor — S-Nitrosoglutathione and X-ray irradiation. The inhalation treatment of animals with NO was carried out in chamber with purified gaseous NO mixed inside with air. Levels of S-Nitrosohemoglobin and methemoglobin in the blood were assessed with electron paramagnetic resonance. The total level of reactive oxygen and nitrogen species in PBL was determined fluorometrically, and serum levels of reactive oxygen species was determined by spectrophotometric assay. DNA damages were assessed by alkaline single-cell gel electrophoresis. The frequency of chromosomal aberrations in human PBL measured with the conventional cytogenetic assay in metaphase cells on short-term (52 h) and long-term (72 h) cultures. Results: Environmental nitrogen oxides or release of NO from stable complexes with biomolecules (such as S-Nitrosothiols) intensified generation of free radicals, DNA damage and development of genomic instability alone or in combination with ionizing radiation. Treatment of PBL by S-Nitrosoglutathione caused prevalent induction of chromatid type but irradiation — chromosome aberrations. The dose dependence of chromatid-type aberrations observed in human PBL after combined influence of S-Nitrosoglutathione and ionizing radiation indicates a crucial role of NO in the formation of chromosomal instability. Conclusion: NO can deregulate free radicals balance resulted in genotoxic effect, posttranslational modification of repair enzymes and thus coordinated development of genomic instability and increase of cancer risk.
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| first_indexed | 2025-11-24T16:43:37Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-139134 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1812-9269 |
| language | English |
| last_indexed | 2025-11-24T16:43:37Z |
| publishDate | 2013 |
| publisher | Інститут експериментальної патології, онкології і радіобіології ім. Р.Є. Кавецького НАН України |
| record_format | dspace |
| spelling | Mikhailenko, V.M. Diomina, E.A. Muzalov, I.I. Gerashchenko, B.I. 2018-06-19T19:20:15Z 2018-06-19T19:20:15Z 2013 Nitric oxide coordinates development of genomic instability in realization of combined effect with ionizing radiation / V.M. Mikhailenko, E.A. Diomina, I.I. Muzalov, B.I. Gerashchenko // Experimental Oncology. — 2013. — Т. 35, № 1. — С. 58-64. — Бібліогр.: 42 назв. — англ. 1812-9269 https://nasplib.isofts.kiev.ua/handle/123456789/139134 The aim of this study was to investigate the ability of environmental nitrogen oxides or natural nitric oxide (NO) donors to modify free radicals balance and development of genomic instability alone or in combination with ionizing radiation. Methods: Genotoxicity and cytogenetic abnormalities were assessed in vitro in peripheral blood lymphocytes (PBL) isolated from healthy humans or in vivo in rats PBL. Human PBL were treated with physiologically relevant NO donor — S-Nitrosoglutathione and X-ray irradiation. The inhalation treatment of animals with NO was carried out in chamber with purified gaseous NO mixed inside with air. Levels of S-Nitrosohemoglobin and methemoglobin in the blood were assessed with electron paramagnetic resonance. The total level of reactive oxygen and nitrogen species in PBL was determined fluorometrically, and serum levels of reactive oxygen species was determined by spectrophotometric assay. DNA damages were assessed by alkaline single-cell gel electrophoresis. The frequency of chromosomal aberrations in human PBL measured with the conventional cytogenetic assay in metaphase cells on short-term (52 h) and long-term (72 h) cultures. Results: Environmental nitrogen oxides or release of NO from stable complexes with biomolecules (such as S-Nitrosothiols) intensified generation of free radicals, DNA damage and development of genomic instability alone or in combination with ionizing radiation. Treatment of PBL by S-Nitrosoglutathione caused prevalent induction of chromatid type but irradiation — chromosome aberrations. The dose dependence of chromatid-type aberrations observed in human PBL after combined influence of S-Nitrosoglutathione and ionizing radiation indicates a crucial role of NO in the formation of chromosomal instability. Conclusion: NO can deregulate free radicals balance resulted in genotoxic effect, posttranslational modification of repair enzymes and thus coordinated development of genomic instability and increase of cancer risk. We thank Dr. Glavin A.A. for the assistance with
 GSNO preparation. en Інститут експериментальної патології, онкології і радіобіології ім. Р.Є. Кавецького НАН України Experimental Oncology Original contributions Nitric oxide coordinates development of genomic instability in realization of combined effect with ionizing radiation Article published earlier |
| spellingShingle | Nitric oxide coordinates development of genomic instability in realization of combined effect with ionizing radiation Mikhailenko, V.M. Diomina, E.A. Muzalov, I.I. Gerashchenko, B.I. Original contributions |
| title | Nitric oxide coordinates development of genomic instability in realization of combined effect with ionizing radiation |
| title_full | Nitric oxide coordinates development of genomic instability in realization of combined effect with ionizing radiation |
| title_fullStr | Nitric oxide coordinates development of genomic instability in realization of combined effect with ionizing radiation |
| title_full_unstemmed | Nitric oxide coordinates development of genomic instability in realization of combined effect with ionizing radiation |
| title_short | Nitric oxide coordinates development of genomic instability in realization of combined effect with ionizing radiation |
| title_sort | nitric oxide coordinates development of genomic instability in realization of combined effect with ionizing radiation |
| topic | Original contributions |
| topic_facet | Original contributions |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/139134 |
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