Evidence map›Paper›PMID 18466336›Full record

ArticleJournal of neurochemistry2008

Elevated oxidative stress and sensorimotor deficits but normal cognition in mice that cannot synthesize ascorbic acid.

Fiona E Harrison, Sarah S Yu, Kristen L Van Den Bossche, Liying Li, James M May, Michael P McDonald

Open access · greenAbstract readComparative Study
In one paragraph

Article in Journal of neurochemistry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 1 pooled it
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

56 citing papers in PubMed, 1 synthesis or guideline pooled it, 98 citations in OpenAlex.

  1. Pooled it
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  9. Ascorbate Is a Primary Antioxidant in Mammals.Molecules (Basel, Switzerland) · 2022
    Review
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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 1 institution in 1 country.

Fiona E HarrisonDivision of Diabetes, Endocrinology & Metabolism, Vanderbilt University, 7465 MRB IV, 2213 Garland Avenue, Nashville, TN 37232-0475, USA. Fiona.Harrison@Vanderbilt.edu
Sarah S Yu
Kristen L Van Den Bossche
Liying Li
James M May
Michael P McDonald
Vanderbilt University · US

Funding

Antioxidant vitamins in models of Alzheimer's DiseaseR01AG023138 · NIA · VANDERBILT UNIVERSITY · PI MAY, JAMES M. · 2004 to 2008
$1.6M
Activity effects on Alzheimer neuropathology &dementiaR01AG022439 · NIA · VANDERBILT UNIVERSITY · PI MCDONALD, MICHAEL P · 2003 to 2006
$1.2M
NIA NIH HHS AG022439NIA NIH HHS AG023138NIA NIH HHS R01 AG022439NIA NIH HHS R01 AG023138
6 · The paper itself

Abstract

Oxidative stress is implicated in the cognitive deterioration associated with normal aging as well as neurodegenerative disorders such as Alzheimer's and Parkinson's diseases. We investigated the effect of ascorbic acid (vitamin C) on oxidative stress, cognition, and motor abilities in mice null for gulono-gamma-lactone oxidase (Gulo). Gulo-/- mice are unable to synthesize ascorbic acid and depend on dietary ascorbic acid for survival. Gulo-/- mice were given supplements that provided them either with ascorbic acid levels equal to- or slightly higher than wild-type mice (Gulo-sufficient), or lower than physiological levels (Gulo-low) that were just enough to prevent scurvy. Ascorbic acid is a major anti-oxidant in mice and any reduction in ascorbic acid level is therefore likely to result in increased oxidative stress. Ascorbic acid levels in the brain and liver were higher in Gulo-sufficient mice than in Gulo-low mice. F(4)-neuroprostanes were elevated in cortex and cerebellum in Gulo-low mice and in the cortex of Gulo-sufficient mice. All Gulo-/- mice were cognitively normal but had a strength and agility deficit that was worse in Gulo-low mice. This suggests that low levels of ascorbic acid and elevated oxidative stress as measured by F(4)-neuroprostanes alone are insufficient to impair memory in the knockouts but may be responsible for the exacerbated motor deficits in Gulo-low mice, and ascorbic acid may have a vital role in maintaining motor abilities.

Indexed as

AnimalsAscorbic AcidAscorbic Acid DeficiencyCognitionFemaleL-Gulonolactone OxidaseMaleMiceMice, Inbred C57BLMice, KnockoutMotor ActivityMotor Skills DisordersOxidative StressPsychomotor PerformanceAscorbic AcidL-Gulonolactone Oxidase

Identifiers

PMID18466336
PMCPMC2575028
OpenAlexW2084006368

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.