Evidence map›Paper›PMID 36846960›Full record

ArticleAging cell2023

Loss of smelling is an early marker of aging and is associated with inflammation and DNA damage in C57BL/6J mice.

Xiuli Dan, Beimeng Yang, Ross A McDevitt, Samuel Gray, Xixia Chu, Quia Claybourne, David M Figueroa, Yongqing Zhang, Deborah L Croteau, Vilhelm A Bohr

Open access · goldAbstract read
In one paragraph

Article in Aging cell, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 7% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
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  3. Article
  4. Review
  5. Olfactory Decline in Elderly at High Altitudes: A Narrative Review.International journal of general medicine · 2026
    Review
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  9. Article
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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

10 authors at 3 institutions in 2 countries.

Xiuli DanSection on DNA Repair, National Institute on Aging, NIH, Maryland, Baltimore, USA.
Beimeng YangSection on DNA Repair, National Institute on Aging, NIH, Maryland, Baltimore, USA.
Ross A McDevittComparative Medicine Section, National Institute on Aging, NIH, Baltimore, Maryland, USA.
Samuel GraySection on DNA Repair, National Institute on Aging, NIH, Maryland, Baltimore, USA.
Xixia ChuSection on DNA Repair, National Institute on Aging, NIH, Maryland, Baltimore, USA.
Quia ClaybourneComparative Medicine Section, National Institute on Aging, NIH, Baltimore, Maryland, USA.
David M FigueroaSection on DNA Repair, National Institute on Aging, NIH, Maryland, Baltimore, USA.
Yongqing ZhangLaboratory of Genetics and Genomics, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, USA.
Deborah L CroteauSection on DNA Repair, National Institute on Aging, NIH, Maryland, Baltimore, USA.
Vilhelm A BohrSection on DNA Repair, National Institute on Aging, NIH, Maryland, Baltimore, USA.ORCID 0000-0003-4823-6429
National Institute on Aging · USNational Institutes of Health · USUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Olfactory dysfunction is a prevalent symptom and an early marker of age-related neurodegenerative diseases in humans, including Alzheimer's and Parkinson's Diseases. However, as olfactory dysfunction is also a common symptom of normal aging, it is important to identify associated behavioral and mechanistic changes that underlie olfactory dysfunction in nonpathological aging. In the present study, we systematically investigated age-related behavioral changes in four specific domains of olfaction and the molecular basis in C57BL/6J mice. Our results showed that selective loss of odor discrimination was the earliest smelling behavioral change with aging, followed by a decline in odor sensitivity and detection while odor habituation remained in old mice. Compared to behavioral changes related with cognitive and motor functions, smelling loss was among the earliest biomarkers of aging. During aging, metabolites related with oxidative stress, osmolytes, and infection became dysregulated in the olfactory bulb, and G protein coupled receptor-related signaling was significantly down regulated in olfactory bulbs of aged mice. Poly ADP-ribosylation levels, protein expression of DNA damage markers, and inflammation increased significantly in the olfactory bulb of older mice. Lower NAD

Indexed as

Olfaction DisordersSmellAgingAnimalsDNA DamageHumansInflammationMiceMice, Inbred C57BLNADOlfactory BulbNADagingDNA damageinflammationNAD+smelling loss

Identifiers

PMID36846960
PMCPMC10086518
OpenAlexW4322498161

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.