Evidence map›Paper›PMID 22227001›Full record

ArticleNeurobiology of disease2012

Loss of circadian clock accelerates aging in neurodegeneration-prone mutants.

Natraj Krishnan, Kuntol Rakshit, Eileen S Chow, Jill S Wentzell, Doris Kretzschmar, Jadwiga M Giebultowicz

Open access · greenAbstract read
In one paragraph

Article in Neurobiology of disease, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

56 citing papers in PubMed, 102 citations in OpenAlex.

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  12. Empowering Melatonin Therapeutics withDiseases (Basel, Switzerland) · 2021
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  20. Aging and the clock: Perspective from flies to humans.The European journal of neuroscience · 2020
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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

6 authors at 2 institutions in 1 country.

Natraj KrishnanDepartment of Zoology, Oregon State University, Corvallis, OR, USA.
Kuntol Rakshit
Eileen S Chow
Jill S Wentzell
Doris Kretzschmar
Jadwiga M Giebultowicz
Oregon State University · USOregon Health & Science University · US

Funding

SWS/NTE function in neurodegeneration and axonopathyR01NS047663 · NINDS · OREGON HEALTH & SCIENCE UNIVERSITY · PI KRETZSCHMAR, DORIS · 2004 to 2013
$2.7M
Role of circadian clocks in maintaining a healthy nervous systemR21NS075500 · NINDS · OREGON STATE UNIVERSITY · PI GIEBULTOWICZ, JADWIGA M, RADYUK, SVETLANA NIKOLAEVNA · 2011 to 2012
$448k
Exploring links between circadian clocks and aging.R21AG038989 · NIA · OREGON STATE UNIVERSITY · PI GIEBULTOWICZ, JADWIGA M, KRISHNAN, NATRAJ · 2011 to 2012
$393k
NIA NIH HHS R21 AG038989NINDS NIH HHS R01 NS047663NINDS NIH HHS R21 NS075500
6 · The paper itself

Abstract

Circadian clocks generate rhythms in molecular, cellular, physiological, and behavioral processes. Recent studies suggest that disruption of the clock mechanism accelerates organismal senescence and age-related pathologies in mammals. Impaired circadian rhythms are observed in many neurological diseases; however, it is not clear whether loss of rhythms is the cause or result of neurodegeneration, or both. To address this important question, we examined the effects of circadian disruption in Drosophila melanogaster mutants that display clock-unrelated neurodegenerative phenotypes. We combined a null mutation in the clock gene period (per(01)) that abolishes circadian rhythms, with a hypomorphic mutation in the carbonyl reductase gene sniffer (sni(1)), which displays oxidative stress induced neurodegeneration. We report that disruption of circadian rhythms in sni(1) mutants significantly reduces their lifespan compared to single mutants. Shortened lifespan in double mutants was coupled with accelerated neuronal degeneration evidenced by vacuolization in the adult brain. In addition, per(01)sni(1) flies showed drastically impaired vertical mobility and increased accumulation of carbonylated proteins compared to age-matched single mutant flies. Loss of per function does not affect sni mRNA expression, suggesting that these genes act via independent pathways producing additive effects. Finally, we show that per(01) mutation accelerates the onset of brain pathologies when combined with neurodegeneration-prone mutation in another gene, swiss cheese (sws(1)), which does not operate through the oxidative stress pathway. Taken together, our data suggest that the period gene may be causally involved in neuroprotective pathways in aging Drosophila.

Indexed as

AgingAge FactorsAlcohol OxidoreductasesAnalysis of VarianceAnimalsAnimals, Genetically ModifiedChronobiology DisordersCircadian RhythmDisease Models, AnimalDrosophila melanogasterDrosophila ProteinsGene Expression RegulationMutationNerve DegenerationNerve Tissue ProteinsOxidative StressAlcohol OxidoreductasesDrosophila ProteinsNerve Tissue ProteinsPeriod Circadian Proteinssni protein, DrosophilaSWS protein, Drosophila

Identifiers

PMID22227001
PMCPMC3291167
OpenAlexW2164890075

What OpenQuestion holds

Textmetadata
LicenceTDM
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.