Evidence map›Paper›PMID 18845243›Full record

ArticleFree radical biology & medicine2008

Age, sex, and race influence single-strand break repair capacity in a human population.

Andrzej R Trzeciak, Janice Barnes, Ngozi Ejiogu, Kamala Foster, Larry J Brant, Alan B Zonderman, Michele K Evans

Abstract read
In one paragraph

Article in Free radical biology & medicine, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
0.7field-weighted citation impact, top 29% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 54 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Andrzej R TrzeciakLaboratory of Cellular and Molecular Biology, National Institute on Aging, NIH, Baltimore, MD 21224, USA.
Janice Barnes
Ngozi Ejiogu
Kamala Foster
Larry J Brant
Alan B Zonderman
Michele K Evans
National Institute on Aging · USNational Institutes of Health · US

Funding

Healthy Aging In Neighborhoods of Diversity Across the Life Span (HANDLS)ZIAAG000513 · NIA · NATIONAL INSTITUTE ON AGING · PI EVANS, MICHELE K · 2009 to 2025
$70.9M
The Underlying Biology of Health DisparitiesZIAAG000519 · NIA · NATIONAL INSTITUTE ON AGING · PI EVANS, MICHELE K · 2009 to 2025
$15.7M
Measuring DNA Damage/Repair Capacity in Human PopulationZ01AG000519 · NIA · NATIONAL INSTITUTE ON AGING · PI EVANS, MICHELE K · 2005 to 2008
$942k
Intramural NIH HHS Z01 AG000519
6 · The paper itself

Abstract

Recently, we developed an improved comet assay protocol for evaluating single-strand break repair capacity (SSB-RC) in unstimulated cryopreserved human peripheral blood mononuclear cells (PBMCs). This methodology facilitates control of interexperimental variability [A.R. Trzeciak, J. Barnes, M.K. Evans, A modified alkaline comet assay for measuring DNA repair capacity in human populations. Radiat. Res. 169 (2008) 110-121]. The fast component of SSB repair (F-SSB-RC) was assessed using a novel parameter, the initial rate of DNA repair, and the widely used half-time of DNA repair. The slow component of SSB repair (S-SSB-RC) was estimated using the residual DNA damage after 60 min. We have examined repair of gamma-radiation-induced DNA damage in PBMCs from four age-matched groups of male and female whites and African-Americans between ages 30 and 64. There is an increase in F-SSB-RC with age in white females (P<0.01) and nonsignificant decrease in F-SSB-RC in African-American females (P=0.061). F-SSB-RC is lower in white females than in white males (P<0.01). There is a decrease in F-SSB-RC with age in African-American females as compared to white females (P<0.002) and African-American males (nonsignificant, P=0.059). Age, sex, and race had a similar effect on intercellular variability of DNA damage in gamma-irradiated and repairing PBMCs. Our findings suggest that age, sex, and race influence SSB-RC as measured by the alkaline comet assay. SSB-RC may be a useful clinical biomarker.

Indexed as

DNA DamageDNA RepairAdultAge FactorsBlack or African AmericanComet AssayDNA, Single-StrandedFemaleGamma RaysHumansLeukocytes, MononuclearMaleMiddle AgedRacial GroupsSex FactorsWhite PeopleDNA, Single-Stranded

Identifiers

PMID18845243
PMCPMC3072751
OpenAlexW2163938614

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.