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Genomic Instability in Newborn with Short Telomeres

Telomere length is considered to be a risk factor in adults due to its proved association with cancer incidence and mortality. Since newborn present a wide interindividual variation in mean telomere length, it is relevant to demonstrate if these differences in length can act also as an early risk in...

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Autores principales: Moreno-Palomo, Jennifer, Creus, Amadeu, Marcos, Ricard, Hernández, Alba
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3951432/
https://www.ncbi.nlm.nih.gov/pubmed/24622247
http://dx.doi.org/10.1371/journal.pone.0091753
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author Moreno-Palomo, Jennifer
Creus, Amadeu
Marcos, Ricard
Hernández, Alba
author_facet Moreno-Palomo, Jennifer
Creus, Amadeu
Marcos, Ricard
Hernández, Alba
author_sort Moreno-Palomo, Jennifer
collection PubMed
description Telomere length is considered to be a risk factor in adults due to its proved association with cancer incidence and mortality. Since newborn present a wide interindividual variation in mean telomere length, it is relevant to demonstrate if these differences in length can act also as an early risk indicator. To answer this question, we have measured the mean telomere length of 74 samples of cord blood from newborns and studied its association with the basal genetic damage, measured as the frequency of binucleated cells carrying micronuclei. In addition, we have challenged the cells of a subgroup of individuals (N = 35) against mitomycin-C (MMC) to establish their sensitivity to induced genomic instability. Results indicate that newborn with shorter telomeres present significantly higher levels of genetic damage when compared to those with longer telomeres. In addition, the cellular response to MMC was also significantly higher among those samples from subjects with shorter telomeres. Independently of the causal mechanisms involved, our results show for the first time that telomere length at delivery influence both the basal and induced genetic damage of the individual. IMPACT: Individuals born with shorter telomeres may be at increased risk, especially for those biological processes triggered by genomic instability as is the case of cancer and other age-related diseases.
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spelling pubmed-39514322014-03-13 Genomic Instability in Newborn with Short Telomeres Moreno-Palomo, Jennifer Creus, Amadeu Marcos, Ricard Hernández, Alba PLoS One Research Article Telomere length is considered to be a risk factor in adults due to its proved association with cancer incidence and mortality. Since newborn present a wide interindividual variation in mean telomere length, it is relevant to demonstrate if these differences in length can act also as an early risk indicator. To answer this question, we have measured the mean telomere length of 74 samples of cord blood from newborns and studied its association with the basal genetic damage, measured as the frequency of binucleated cells carrying micronuclei. In addition, we have challenged the cells of a subgroup of individuals (N = 35) against mitomycin-C (MMC) to establish their sensitivity to induced genomic instability. Results indicate that newborn with shorter telomeres present significantly higher levels of genetic damage when compared to those with longer telomeres. In addition, the cellular response to MMC was also significantly higher among those samples from subjects with shorter telomeres. Independently of the causal mechanisms involved, our results show for the first time that telomere length at delivery influence both the basal and induced genetic damage of the individual. IMPACT: Individuals born with shorter telomeres may be at increased risk, especially for those biological processes triggered by genomic instability as is the case of cancer and other age-related diseases. Public Library of Science 2014-03-12 /pmc/articles/PMC3951432/ /pubmed/24622247 http://dx.doi.org/10.1371/journal.pone.0091753 Text en © 2014 Moreno-Palomo et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Moreno-Palomo, Jennifer
Creus, Amadeu
Marcos, Ricard
Hernández, Alba
Genomic Instability in Newborn with Short Telomeres
title Genomic Instability in Newborn with Short Telomeres
title_full Genomic Instability in Newborn with Short Telomeres
title_fullStr Genomic Instability in Newborn with Short Telomeres
title_full_unstemmed Genomic Instability in Newborn with Short Telomeres
title_short Genomic Instability in Newborn with Short Telomeres
title_sort genomic instability in newborn with short telomeres
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3951432/
https://www.ncbi.nlm.nih.gov/pubmed/24622247
http://dx.doi.org/10.1371/journal.pone.0091753
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