Evidence map›Paper›PMID 36933143›Full record

ArticleGeroScience2023

Ketogenic diets initiated in late mid-life improved measures of spatial memory in male mice.

Zeyu Zhou, Kyoungmi Kim, Jon J Ramsey, Jennifer M Rutkowsky

Open access · hybridAbstract read
In one paragraph

Article in GeroScience, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

16 citing papers in PubMed, 23 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

4 authors at 1 institution in 1 country.

Zeyu ZhouDepartment of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA, USA.
Kyoungmi KimDepartment of Public Health Sciences, School of Medicine, University of California, Davis, CA, USA.
Jon J RamseyDepartment of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA, USA. jjramsey@ucdavis.edu.
Jennifer M RutkowskyDepartment of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA, USA. jrutkowsky@ucdavis.edu.
University of California, Davis · US

Funding

TRANSLOCATION OF p66Shc: KINETICS, FUNCTION, APOPTOSISP01AG025532 · NIA · UNIVERSITY OF CALIFORNIA AT DAVIS · PI KIM, KYOUNGMI · 2007 to 2017
$12.1M
Reversing the epigenetic code of aging through ketogenic dietsP01AG062817 · NIA · UNIVERSITY OF CALIFORNIA AT DAVIS · PI CORTOPASSI, GINO A · 2019 to 2023
$11.4M
Mouse Metabolic Phenotyping Center (MMPC) at UC DavisU2CDK092993 · NIDDK · UNIVERSITY OF CALIFORNIA AT DAVIS · PI LLOYD, KC KENT · 2016 to 2021
$5.9M
The National Center for Metabolic Phenotyping of Mouse Models of Obesity and Diabetes (MPMOD) at UC DavisU2CDK135074 · NIDDK · UNIVERSITY OF CALIFORNIA AT DAVIS · PI Sean Harrison Adams · 2023 to 2026
$4.0M
A ketogenic longevity diet for resistance to age-related functional decline and Alzheimer's diseaseR56AG057163 · NIA · UNIVERSITY OF CALIFORNIA AT DAVIS · PI CORTOPASSI, GINO A, RAMSEY, JON J. · 2018 to 2018
$783k
NIA NIH HHS AG057163NIA NIH HHS AG062817NIA NIH HHS P01 AG062817NIA NIH HHS R56 AG057163NIDDK NIH HHS U2C DK092993NIDDK NIH HHS U2C DK135074
6 · The paper itself

Abstract

Studies have shown ketogenic diets (KD) started from early middle-age improved health span and longevity in mice. KDs started later in life or administered intermittently may be more feasible and promote compliance. Therefore, this study sought to test if continuous or intermittent KDs started in late-middle-aged mice would improve cognition and motor function at advanced age. Eighteen-month-old male C57BL/6JN mice were assigned to an isocaloric control (CD), KD, or intermittent ketogenic (IKD, 3-day KD/week) diet. A panel of behavior tests were performed to assess cognitive and motor functions with aging. Y-maze alternation rate was higher for both IKD and KD mice at 23 months of age and for KD mice at 26 months indicating an improved spatial working memory. Twenty-six-month-old KD mice also showed better spatial learning memory in Barnes maze when compared to the CD. Improved grid wire hang performance was observed in aged IKD and KD versus CD mice indicating better muscle endurance under isometric contraction. A reduced level of circulating proinflammatory cytokines in aged KD (IL-6 and TNF-α) and IKD (IL-6) mice may contribute to the phenotypic improvements observed with these interventions. This study demonstrates that when initiated at late-middle age, the KD improved measures of spatial memory and grid wire hang performance in aged male mice, with IKD showing results intermediate to the CD and KD groups.

Indexed as

Diet, KetogenicAnimalsDietInterleukin-6MaleMiceMice, Inbred C57BLSpatial MemoryInterleukin-6AgingHealth spanKetogenic diet

Identifiers

PMID36933143
PMCPMC10651563
OpenAlexW4327811812

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.