Evidence map›Paper›PMID 34989913›Full record

ArticleBiogerontology2022

Lack of age-related respiratory changes in Daphnia.

Cora E Anderson, Millicent N Ekwudo, Rachael A Jonas-Closs, Yongmin Cho, Leonid Peshkin, Marc W Kirschner, Lev Y Yampolsky

Abstract read
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In one paragraph

Article in Biogerontology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.9field-weighted citation impact, top 33% 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

4 citing papers in PubMed, 10 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.

Cora E AndersonDepartment of Biological Sciences, East Tennessee State University, Johnson City, TN, 37614, USA.
Millicent N EkwudoDepartment of Biological Sciences, East Tennessee State University, Johnson City, TN, 37614, USA.
Rachael A Jonas-ClossDepartment of Systems Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, 02115, USA.
Yongmin ChoDepartment of Systems Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, 02115, USA.
Leonid PeshkinDepartment of Systems Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, 02115, USA.
Marc W KirschnerDepartment of Systems Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, 02115, USA.
Lev Y YampolskyDepartment of Biological Sciences, East Tennessee State University, Johnson City, TN, 37614, USA. yampolsk@etsu.edu.ORCID 0000-0001-7680-6025
Harvard University · USEast Tennessee State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aging is a multifaceted process of accumulation of damage and waste in cells and tissues; age-related changes in mitochondria and in respiratory metabolism have the focus of aging research for decades. Studies of aging in nematodes, flies and mammals all revealed age-related decline in respiratory functions, with somewhat controversial causative role. Here we investigated age-related changes in respiration rates, lactate/pyruvate ratio, a commonly used proxy for NADH/NAD+ balance, and mitochondrial membrane potential in 4 genotypes of an emerging model organism for aging research, a cyclic parthenogen Daphnia magna. We show that total body weight-adjusted respiration rate decreased with age, although this decrease was small in magnitude and could be fully accounted for by the decrease in locomotion and feeding activity. Neither total respiration normalized by protein content, nor basal respiration rate measured in anaesthetized animals decreased with age. Lactate/pyruvate ratio and mitochondrial membrane potential (∆Ψ

Indexed as

DaphniaRespiratory RateAnimalsLactatesLongevityMammalsPyruvatesLactatesPyruvatesAgingDaphniaMitochondrial membrane potentialRespiration

Identifiers

PMID34989913
OpenAlexW4205583351

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.