Evidence map›Paper›PMID 30136078›Full record

ArticleGeroScience2018

DNA methylation associated with healthy aging of elderly twins.

Sangkyu Kim, Jennifer Wyckoff, Anne-T Morris, Annemarie Succop, Ally Avery, Glen E Duncan, S Michal Jazwinski

Open access · bronzeAbstract readTwin Study
In one paragraph

Article in GeroScience, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
2.7field-weighted citation impact, top 9% 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

36 citing papers in PubMed, 49 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 4 institutions in 1 country.

Sangkyu KimTulane Center for Aging and Department of Medicine, Tulane University Health Sciences Center, New Orleans, LA, 70112, USA. skim5@tulane.edu.ORCID 0000-0001-6761-2579
Jennifer WyckoffTulane Center for Aging and Department of Medicine, Tulane University Health Sciences Center, New Orleans, LA, 70112, USA.
Anne-T MorrisVirginia Commonwealth University, Mid-Atlantic Twin Registry, Richmond, VA, USA.
Annemarie SuccopUniversity of Washington Twin Registry, Seattle, WA, USA.
Ally AveryUniversity of Washington Twin Registry, Seattle, WA, USA.
Glen E DuncanUniversity of Washington Twin Registry, Seattle, WA, USA.
S Michal JazwinskiTulane Center for Aging and Department of Medicine, Tulane University Health Sciences Center, New Orleans, LA, 70112, USA.
Tulane University · USWashington State University Spokane · USUniversity of Washington · USVirginia Commonwealth University · US

Funding

The role of the CMV-associated reactive oxygen species in age-relatedP20GM103629 · NIGMS · TULANE UNIVERSITY OF LOUISIANA · PI ROUT, NAMITA · 2012 to 2021
$22.4M
NIGMS NIH HHS P20 GM103629NIGMS NIH HHS P20GM103629
6 · The paper itself

Abstract

Variation in healthy aging and lifespan is ascribed more to various non-genetic factors than to inherited genetic determinants, and a major goal in aging research is to reveal the epigenetic basis of aging. One approach to this goal is to find genomic sites or regions where DNA methylation correlates with biological age. Using health data from 134 elderly twins, we calculated a frailty index as a quantitative indicator of biological age, and by applying the Infinium HumanMethylation450K BeadChip technology to their leukocyte DNA samples, we obtained quantitative DNA methylation data on genome-wide CpG sites. We analyzed the health and epigenome data by taking two independent associative approaches: the parametric regression-based approach and a non-parametric machine learning approach followed by GO ontology analysis. Our results indicate that DNA methylation at CpG sites in the promoter region of PCDHGA3 is associated with biological age. PCDHGA3 belongs to clustered protocadherin genes, which are all located in a single locus on chromosome 5 in human. Previous studies of the clustered protocadherin genes showed that (1) DNA methylation is associated with age or age-related phenotypes; (2) DNA methylation can modulate gene expression; (3) dysregulated gene expression is associated with various pathologies; and (4) DNA methylation patterns at this locus are associated with adverse lifetime experiences. All these observations suggest that DNA methylation at the clustered protocadherin genes, including PCDHGA3, is a key mediator of healthy aging.

Indexed as

DNA MethylationAgedAged, 80 and overCadherin Related ProteinsCell Adhesion MoleculesCpG IslandsFemaleFrailtyHealthy AgingHumansMalePromoter Regions, GeneticTwins, DizygoticTwins, MonozygoticCadherin Related ProteinsCell Adhesion MoleculesPCDH-GAMMA-A3, humanAgingBiological ageDNA methylationFrailty indexProtocadherin

Identifiers

PMID30136078
PMCPMC6294724
OpenAlexW2888631183

What OpenQuestion holds

Textmetadata
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.