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Aging and DNA damage in humans: a meta‐analysis study.
Aging (Albany NY). 2014 Jun;6(6):432-9. doi:
Soares JP, Cortinhas A, Bento T, Leitão JC, Collins AR, Gaivão I, Mota MP
Abstract:
.....To better understand the question of age‐related DNA damage in humans and to identify possible moderator variables, a metaanalysis was conducted. Electronic databases and bibliographies for studies published since 2004 were searched. Summary odds ratios (ORs) and 95% confidence intervals (CIs) for age‐related DNA damage were calculated in a random‐effects model. A total of 76 correlations from 36 studies with 4676 participants were included. Based on our analysis, a correlation between age and DNA damage was found (r=0.230, p=0.000; 95% confidence interval=0.111‐0.342). The test for heterogeneity of variance indicates that the study´s results are significantly high (Q (75)=1754.831, p=0.000). Moderator variables such as smoking habits, technique used, and the tissue/sample analyzed, are shown to influence age‐related DNA damage (p=0.026; p=0.000; p=0.000, respectively). Nevertheless, sex did not show any influence on this relation (p=0.114). In conclusion, this meta‐analysis showed an association between age and DNA damage in humans. It was also found that smoking habits, the technique used, and tissue/sample analyzed, are important moderator variables in age‐related DNA damage.
PMID: 25140379
Free Full-Text: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4100806/
Tags: DNA damage, meta-analyses