Evidence map›Paper›PMID 20532550›Full record

ArticleGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2010

Neuroprotection by acetoacetate and β-hydroxybutyrate against NMDA-induced RGC damage in rat--possible involvement of kynurenic acid.

Sebastian Thaler, Tomasz J Choragiewicz, Robert Rejdak, Michal Fiedorowicz, Waldemar A Turski, Maria Tulidowicz-Bielak, Eberhart Zrenner, Frank Schuettauf, Tomasz Zarnowski

Open access · hybridAbstract read
In one paragraph

Article in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
1.0field-weighted citation impact, top 25% 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

29 citing papers in PubMed, 43 citations in OpenAlex.

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  7. Context-Dependent Effects of the Ketogenic Diet on Retinal Ganglion Cell Survival and Axonal Regeneration After Optic Nerve Injury.Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and Therapeutics · 2023
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  18. Nicorandil alleviated cardiac hypoxia/reoxygenation-induced cytotoxicityThe Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology · 2019
    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

9 authors at 3 institutions in 2 countries.

Sebastian ThalerCentre for Ophthalmology, University of Tübingen, Tübingen, Germany.
Tomasz J Choragiewicz
Robert Rejdak
Michal Fiedorowicz
Waldemar A Turski
Maria Tulidowicz-Bielak
Eberhart Zrenner
Frank Schuettauf
Tomasz Zarnowski
University of Tübingen · DEMedical University of Lublin · PLInstytut Medycyny Wsi im. Witolda Chodźki · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study investigated the effects of systemically administered lithium acetoacetate (ACA) and sodium β-hydroxybutyrate (BHB) in a rat model of N-methyl-D-aspartate (NMDA)-induced damage of retinal ganglion cells (RGC). Additionally, the influence of ACA and BHB on kynurenic acid (KYNA) production was assessed in vitro in bovine retinal slices.

methodsFemale adult Brown-Norway rats in groups of 5-8 animals were used. ACA and BHB were administered intraperitoneally once a day for 21 consecutive days, and phosphate buffered saline (PBS) was administered to control animals. After 2 weeks, the animals received intraocular NMDA (2 μl of a 10 mM solution in PBS) or intraocular PBS as a control. On day 19, retinal ganglion cells were labeled retrogradely with hydroxystilbamidine. Two days later, RGC density (cells per mm(2)) was assessed on retinal flatmounts. Additionaly, bovine retinal slices were incubated with NMDA and ACA or BHB at concentrations of 1.0 mM and 3.0 mM, and de novo KYNA production was measured using HPLC.

resultsIntraperitoneal ACA (250 mg/kg) or BHB (291.2 mg/kg) significantly protected RGC against NMDA-induced neurodegeneration. De novo KYNA production in bovine retinal slices was lowered by NMDA. Both ACA and BHB at a concentration of 3.0 mM significantly reduced the effects of NMDA.

conclusionsACA and BHB had a significant dose-dependent neuroprotective effect on RGC in a rat model of NMDA-induced RGC damage. Both ketone bodies also significantly attenuated NMDA-induced reduction of retinal KYNA production in vitro, suggesting that this mechanism may be essential for the neuroprotective effects of ACA and BHB in vivo. Our results imply that ketone bodies may represent an additional treatment option in chronic neurodegenerative disorders of the eye.

Indexed as

3-Hydroxybutyric AcidAcetoacetatesAnimalsCell CountChromatography, High Pressure LiquidDose-Response Relationship, DrugFemaleInjections, IntraperitonealKynurenic AcidNeuroprotective AgentsN-MethylaspartateRatsRats, Inbred BNRetinal Ganglion Cells3-Hydroxybutyric AcidAcetoacetatesacetoacetic acidKynurenic AcidNeuroprotective AgentsN-Methylaspartate

Identifiers

PMID20532550
PMCPMC2974203
OpenAlexW1999339164

What OpenQuestion holds

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LicenceCC BY-NC
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.