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BMC Geriatrics
Published in: BMC Geriatrics 1/2018

Open Access 01-12-2018 | Research Article

Rate of individuals with clearly increased radiosensitivity rise with age both in healthy individuals and in cancer patients

Authors: Barbara Schuster, Anna Ellmann, Theresa Mayo, Judith Auer, Matthias Haas, Markus Hecht, Rainer Fietkau, Luitpold V. Distel

Published in: BMC Geriatrics | Issue 1/2018

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Abstract

Background

The question of an age dependence of individual radiosensitivity has only marginally been studied so far. Therefore, we analyzed blood samples of healthy individuals and cancer patients of different ages to determine individual radiosensitivity.

Methods

Ex vivo irradiated blood samples of 595 individuals were tested. Chromosomes 1, 2 and 4 were stained by 3-color fluorescence in situ hybridization and aberrations were analyzed. Radiosensitivity was determined by the mean breaks per metaphase (B/M).

Results

Healthy individuals (mean age 50.7 years) had an average B/M value of 0.42 ± 0.104 and an increase of 0.0014B/M per year. The patients (mean age 60.4 years) had an average B/M value of 0.44 ± 0.150 and radiosensitivity did not change with age. In previous studies we found that from a value of 0.6B/M on an individual is considered to be distinctly radiosensitive. The portion of radiosensitive individuals (B/M > 0.6) increased in both cohorts with age.

Conclusion

Individual radiosensitivity rises continuously with age, yet with strong interindividual variation. No age related increase of radiosensitivity can be demonstrated in patients due to the strong interindividual variation. However among old cancer patients there is a higher probability to have patients with clearly increased radiosensitivity than at younger age.
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Metadata
Title
Rate of individuals with clearly increased radiosensitivity rise with age both in healthy individuals and in cancer patients
Authors
Barbara Schuster
Anna Ellmann
Theresa Mayo
Judith Auer
Matthias Haas
Markus Hecht
Rainer Fietkau
Luitpold V. Distel
Publication date
01-12-2018
Publisher
BioMed Central
Published in
BMC Geriatrics / Issue 1/2018
Electronic ISSN: 1471-2318
DOI
https://doi.org/10.1186/s12877-018-0799-y

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