Non-uniform radiation-induced biological responses at the tissue level involved in the health risk of environmental radiation: A radiobiological hypothesis

Hisanori Fukunaga, Kevin M. Prise

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Background: The conventional concept of radiation protection is based on epidemiological studies of radiation that support a positive correlation between dose and response. However, there is a remarkable difference in biological responses at the tissue level, depending on whether radiation is delivered as a uniform or non-uniform spatiotemporal distribution due to tissue sparing effects (TSE). From the point of view of radiation micro-dosimetry, environmental radiation is delivered as a non-uniform distribution, and radiation-induced biological responses at the tissue level, such as TSE, would be implicated in individual risk following exposure to environmental radiation. Hypothesis: We hypothesize that the health risks of non-uniform radiation exposure are lower than the same dose at a uniform exposure, due to TSE following irradiation. Testing the hypothesis requires both radiobiological studies using high-precision microbeams and the epidemiological data of environmental radiation-induced effects. The implications of the hypothesis will lead to more personalized approaches in the field of environmental radiation protection. Conclusion: The detection of spatiotemporal dose distribution could be of scientific importance for more accurate individual risk assessment of exposure to environmental radiation. Further radiobiological studies on non-uniform radiation-induced biological responses at the tissue level are expected.

Original languageEnglish
Article number93
JournalEnvironmental Health: A Global Access Science Source
Volume17
Issue number1
DOIs
Publication statusPublished - 2018 Jan 1
Externally publishedYes

Keywords

  • Environmental radiation
  • Health risk assessment
  • Radiation-induced biological effects
  • Radiological protection
  • Tissue sparing effects

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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