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Updated: Jul 14, 2026

Rapid Analysis of Chromosome Aberrations in Mouse B Lymphocytes by PNA-FISH

Rapid Analysis of Chromosome Aberrations in Mouse B Lymphocytes by PNA-FISH

Published on: August 19, 2014

Baseline chromosome aberrations in children.

Domenico Franco Merlo¹, Marcello Ceppi, Elena Stagi

¹National Cancer Research Institute, Epidemiology and Biostatistics, Department of Epidemiology and Prevention, Largo Rosanna Benzi 10, 16132 Genoa, Italy. franco.merlo@istge.it

Toxicology Letters

|July 3, 2007

Summary

Chromosome aberrations (CA) in children exposed to environmental pollutants may predict cancer risk. Baseline CA frequencies in healthy children are similar across genders and do not increase with age, providing a crucial reference for studies.

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Detection of Inter-chromosomal Stable Aberrations by Multiple Fluorescence In Situ Hybridization (mFISH) and Spectral Karyotyping (SKY) in Irradiated Mice

Detection of Inter-chromosomal Stable Aberrations by Multiple Fluorescence In Situ Hybridization (mFISH) and Spectral Karyotyping (SKY) in Irradiated Mice

Published on: January 11, 2017

Area of Science:

Environmental Epidemiology
Cytogenetics
Pediatric Oncology

Background:

Field studies consistently show increased chromosome aberrations (CA) in children exposed to environmental pollutants like ionizing radiation and industrial chemicals compared to unexposed individuals.
Childhood and in utero exposures can be chronic, potentially contributing to the etiology of both childhood and adult cancers.
The established association between CA frequency in peripheral blood lymphocytes and cancer risk in occupationally exposed adults supports CA as a cancer predictor.

Purpose of the Study:

To establish baseline frequencies of chromosome aberrations (CA) in a pediatric population.
To provide essential data for planning future epidemiologic investigations on children exposed to low levels of environmental genotoxic agents.
To assess the influence of gender and age on CA baseline levels in children.

Main Methods:

Meta-analysis of 16 published epidemiologic studies on CA frequencies.
Analysis of data from a large sample of unexposed Czech children (n=1214, aged 7-16 years) and newborns (n=206).
Estimation of mean CA frequency for a referent pediatric population (age range 0-19 years).

Main Results:

The overall mean CA frequency in the referent population (0-19 years) was estimated at 1.24% (95% CI=1.05-1.47).
Baseline CA frequencies were similar between boys (1.22%) and girls (1.21%).
CA baseline levels in newborns were 1.14% (95% CI=0.96-1.32) and did not show an increase with age in the studied pediatric population.

Conclusions:

Chromosome aberration (CA) frequency in peripheral blood lymphocytes serves as a valuable biomarker for genetic damage in children exposed to environmental pollutants.
Established baseline CA levels in healthy children are consistent across genders and do not significantly vary with age.
These findings are critical for designing and interpreting epidemiologic studies assessing the health effects of environmental genotoxic exposures in pediatric populations.