Low-dose neutron dose response of zebrafish embryos obtained from the Neutron exposure Accelerator System for Biological Effect Experiments (NASBEE) facility

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • C. Y P Ng
  • E. Y. Kong
  • T. Konishi
  • A. Kobayashi
  • N. Suya

Detail(s)

Original languageEnglish
Pages (from-to)12-17
Journal / PublicationRadiation Physics and Chemistry
Volume114
Online published12 May 2015
Publication statusPublished - 1 Sept 2015

Abstract

The dose response of embryos of the zebrafish, Danio rerio, irradiated at 5. h post fertilization (hpf) by 2-MeV neutrons with ≤100. mGy was determined. The neutron irradiations were made at the Neutron exposure Accelerator System for Biological Effect Experiments (NASBEE) facility in the National Institute of Radiological Sciences (NIRS), Chiba, Japan. A total of 10 neutron doses ranging from 0.6 to 100. mGy were employed (with a gamma-ray contribution of 14% to the total dose), and the biological effects were studied through quantification of apoptosis at 25. hpf. The responses for neutron doses of 10, 20, 25, and 50. mGy approximately fitted on a straight line, while those for neutron doses of 0.6, 1 and 2.5. mGy exhibited neutron hormetic effects. As such, hormetic responses were generically developed by different kinds of ionizing radiations with different linear energy transfer (LET) values. The responses for neutron doses of 70 and 100. mGy were significantly below the lower 95% confidence band of the best-fit line, which strongly suggested the presence of gamma-ray hormesis.

Research Area(s)

  • Dose-response curve, Embryos, Hormesis, Neutrons

Citation Format(s)

Low-dose neutron dose response of zebrafish embryos obtained from the Neutron exposure Accelerator System for Biological Effect Experiments (NASBEE) facility. / Ng, C. Y P; Kong, E. Y.; Konishi, T. et al.
In: Radiation Physics and Chemistry, Vol. 114, 01.09.2015, p. 12-17.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review