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• W4382601360 endingPage "103530" @default.
• W4382601360 startingPage "103530" @default.
• W4382601360 abstract "Frailty is an age-related syndrome characterized by reduced recovery from stressors and increased risks of morbidity and mortality. Although frailty is usually studied in those over 65 years, our previous work showed that frailty is both present and a risk factor for premature mortality in midlife. We identified altered gene expression patterns and biological pathways associated with inflammation in frailty. Evidence suggests DNA oxidation damage related to inflammation accumulates with age, and that DNA repair capacity (DRC) declines with age and age-related conditions. We hypothesized that inter-individual differences in DNA oxidation damage and DRC are associated with frailty status and poverty level. Using the CometChip assay, we assessed baseline single-strand breaks and hydrogen peroxide (H2O2)-induced DNA oxidation damage and DRC in non-frail and frail middle-aged African American and White individuals with household incomes above and below poverty. Analysis of baseline single-strand breaks showed no associations with frailty, poverty, race, or sex. However, we identified an interaction between frailty and poverty in H2O2-induced DNA oxidation damage. We also identified interactions between sex and frailty as well as sex and poverty status with DRC. The social determinant of health, poverty, associates with DRC in men. Baseline DNA damage, H2O2-induced DNA damage as well as DRC were associated with serum cytokine levels. IL-10 levels were inversely associated with baseline DNA damage as well as H2O2-induced DNA damage, DRC was altered by IL-4 levels and sex, and by TNF-α levels in the context of sex and poverty status. This is the first evidence that DRC may be influenced by poverty status at midlife. Our data show that social determinants of health should be considered in examining biological pathways through which disparate age-related health outcomes become manifest." @default.
• W4382601360 created "2023-06-30" @default.
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• W4382601360 date "2023-09-01" @default.
• W4382601360 modified "2023-10-10" @default.
• W4382601360 title "Frailty, sex, and poverty are associated with DNA damage and repair in frail, middle-aged urban adults" @default.
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• W4382601360 doi "https://doi.org/10.1016/j.dnarep.2023.103530" @default.
• W4382601360 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37437502" @default.
• W4382601360 hasPublicationYear "2023" @default.
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