Cited by 136Effects of Radiation ExposureCarcinogens and Genotoxicity AssessmentRadiation Therapy and Dosimetry

Chromosomal radiosensitivity in breast cancer patients with a known or putative genetic predisposition

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Baeyens, A, Thierens, H, Claes, K, Poppe, B, Messiaen, L, De Ridder, L, Vral, A·2002·British Journal of Cancer

Abstract

The chromosomal radiosensitivity of breast cancer patients with a known or putative genetic predisposition was investigated and compared to a group of healthy women. The chromosomal radiosensitivity was assessed with the G2 and the G0-micronucleus assay. For the G2 assay lymphocytes were irradiated in vitro with a dose of 0.4 Gy (60)Co gamma-rays after 71 h incubation, and chromatid breaks were scored in 50 metaphases. For the micronucleus assay lymphocytes were exposed in vitro to 3.5 Gy (60)Co gamma-rays at a high dose rate or low dose rate. 70 h post-irradiation cultures were arrested and micronuclei were scored in 1000 binucleate cells. The results demonstrated that the group of breast cancer patients with a known or putative genetic predisposition was on the average more radiosensitive than a population of healthy women, and this with the G2 as well as with the high dose rate and low dose rate micronucleus assay. With the G2 assay 43% of the patients were found to be radiosensitive. A higher proportion of the patients were radiosensitive with the micronucleus assay (45% with high dose rate and 61% with low dose rate). No correlation was found between the G2 and the G0-micronucleus chromosomal radiosensitivity. Out of the different subgroups considered, the group of the young breast cancer patients without family history showed the highest percentage of radiosensitive cases in the G2 (50%) as well as in the micronucleus assay (75-78%).

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Authors
Baeyens, A., Thierens, H., Claes, K., Poppe, B., Messiaen, L., De Ridder, L., & Vral, A.
Affiliations
Ghent University (BE)
Corresponding author
Vral, A
Venue
British Journal of Cancer
Published
2002-11-26
Volume
87
Issue
12
Pages
1379-1385
ISSN
  • 0007-0920 (ISSN-L)
  • 1532-1827
OpenAlex
W2073895085
Cited by
136
References
38
Citations by year
2026: 2 · 2025: 2 · 2024: 1 · 2023: 4 · 2021: 4 · 2020: 5 · 2019: 6 · 2018: 5 · 2017: 3 · 2016: 4 · 2015: 5 · 2014: 4 · 2013: 3 · 2012: 6
FWCI
8.32
Type
journal article
Language
en
Open access
Locations
  • British Journal of Cancer (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Ghent University Academic Bibliography (Ghent University) (submittedVersion)
  • Lenus, The Irish Health Repository (Dr Steevens Hospital Library) (submittedVersion)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Carcinogens and Genotoxicity Assessment
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Radiation Therapy and Dosimetry
Keywords
chromosomal radiosensitivity, breast cancer, genetic susceptibility, family history (medicine), micronucleus test, chromatid breaks, lymphocytes, gamma irradiation, dose rate, young patients
MeSH terms
Adult, Aged, Breast Neoplasms, Chromosome Aberrations, Female, Gamma Rays, Humans, Lymphocytes, Middle Aged, Mutation, Radiation Tolerance, X-Rays, Micronucleus Tests, Resting Phase, Cell Cycle, G2 Phase, BRCA1 Protein, Genetic Predisposition to Disease, BRCA2 Protein

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