Cytogenetic Examination of Human Peripheral Blood Lymphocytes Cryopreserved after Gamma Irradiation: A Pilot Study

• Suto Yumiko

  Department of Radiation Measurement and Dose Assessment, Center for Advanced Radiation Emergency Medicine, National Institutes for Quantum and Radiological Science and Technology

• Tominaga Takako

  Department of Radiation Emergency Management, Center for Advanced Radiation Emergency Medicine, National Institutes for Quantum and Radiological Science and Technology

• Akiyama Miho

  Department of Radiation Measurement and Dose Assessment, Center for Advanced Radiation Emergency Medicine, National Institutes for Quantum and Radiological Science and Technology

• Hirai Momoki

  Department of Radiation Measurement and Dose Assessment, Center for Advanced Radiation Emergency Medicine, National Institutes for Quantum and Radiological Science and Technology

Abstract

For the assessment of radiation-induced damage in human cells, the frequency of chromosomal aberrations, especially that of dicentric chromosomes in peripheral blood lymphocytes, has been used as the measure in biodosimetry. Considering mass-casualty radiological incidents, it is hoped to preserve part of the blood specimens to be examined at an appropriate time after the medical triage process. In this study, the potential usefulness of lymphocytes cryopreserved for longer than one year was assessed as a pilot study. Seven blood specimens from three healthy donors were experimentally irradiated and cryopreserved for approximately one to five years. All cryopreserved specimens examined were successfully cultured to obtain a sufficient number of mitotic cells for dosimetric analyses. Blood specimens from one donor were intensively examined for the precise comparative analysis of chromosomal aberrations between cultures of cryopreserved specimens and those of freshly prepared specimens. The frequencies of cells with chromosomal aberrations in 1.5-year-cryopreserved specimens after 2-Gy gamma irradiation were not significantly different from those examined using a fresh blood specimen. In this study, we showed the practical significance of the cryopreservation method of peripheral blood lymphocytes that can offer a new strategy of preparedness for triage in mass-casualty radiation incidents/accidents.

Journal

• CYTOLOGIA

  CYTOLOGIA 85 (1), 71-77, 2020-03-25

  Japan Mendel Society, International Society of Cytology

Keywords

• Cryopreservation
• Chromosomal aberration
• Dicentric chromosome assay
• FISH
• Biodosimetry
• Medical triage

Details

• CRID: 1390846609815621888
• NII Article ID: 130007815378
• DOI: 10.1508/cytologia.85.71
• ISSN: 13487019
• ISSN: 00114545
• Web Site: https://www.jstage.jst.go.jp/article/cytologia/85/1/85_D-19-00101/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed