Evidence map›Paper›PMID 26697495›Full record

ArticleBioMed research international2015

Inhibition of ACE Retards Tau Hyperphosphorylation and Signs of Neuronal Degeneration in Aged Rats Subjected to Chronic Mild Stress.

Said AbdAlla, Ahmed El Hakim, Ahmed Abdelbaset, Yasser Elfaramawy, Ursula Quitterer

Open access · hybridAbstract read
In one paragraph

Article in BioMed research international, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 14% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

  1. Renin-angiotensin system gene expression and neurodegenerative diseases.Journal of the renin-angiotensin-aldosterone system : JRAAS · 2016
    Pooled it
  2. Review
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  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
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  11. Article
  12. Article
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  14. Article
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  16. Stress and Alzheimer's disease: A senescence link?Neuroscience and biobehavioral reviews · 2020
    Review
  17. Discovery of Pathologic GPCR Aggregation.Frontiers in medicine · 2019
    Review
  18. Review
  19. Microglial Activation Is Modulated by Captopril:Frontiers in cellular neuroscience · 2018
    Article
  20. Review
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

5 authors at 4 institutions in 3 countries.

Said AbdAllaMolecular Pharmacology Unit, Department of Chemistry and Applied Biosciences, ETH Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.
Ahmed El HakimInternational Neuroscience Institute (INI) Hannover, Rudolf-Pichlmayr-Strasse 4, 30625 Hannover, Germany.
Ahmed AbdelbasetMedical Research Centre (MRC), Ain Shams University Hospitals, Abassia, Cairo 11591, Egypt.
Yasser ElfaramawyMedical Research Centre (MRC), Ain Shams University Hospitals, Abassia, Cairo 11591, Egypt.
Ursula QuittererMolecular Pharmacology Unit, Department of Chemistry and Applied Biosciences, ETH Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland ; Institute of Pharmacology and Toxicology, Department of Medicine, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.
Ain Shams University Hospital · EGETH Zurich · CHInternational Neuroscience Institute · DEUniversity of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

With increasing life expectancy, Alzheimer's disease (AD) and other types of age-associated dementia are on the rise worldwide. Treatment approaches for dementia are insufficient and novel therapies are not readily available. In this context repurposing of established drugs appears attractive. A well-established class of cardiovascular drugs, which targets the angiotensin II system, is such a candidate, which currently undergoes a paradigm shift with regard to the potential benefit for treatment of neurodegenerative symptoms. In search for additional evidence, we subjected aged rats to chronic unpredictable mild stress, which is known to enhance the development of AD-related neuropathological features. We report here that four weeks of chronic mild stress induced a strong upregulation of the hippocampal angiotensin-converting enzyme (Ace) at gene expression and protein level. Concomitantly, tau protein hyperphosphorylation developed. Signs of neurodegeneration were detected by the significant downregulation of neuronal structure proteins such as microtubule-associated protein 2 (Map2) and synuclein-gamma (Sncg). Ace was involved in neurodegenerative symptoms because treatment with the brain-penetrating ACE inhibitor, captopril, retarded tau hyperphosphorylation and signs of neurodegeneration. Moreover, ACE inhibitor treatment could counteract glutamate neurotoxicity by preventing the downregulation of glutamate decarboxylase 2 (Gad2). Taken together, ACE inhibition targets neurodegeneration triggered by environmental stress.

Indexed as

Alzheimer DiseaseAngiotensin-Converting Enzyme InhibitorsAnimalsCaptoprilgamma-SynucleinGene Expression RegulationGlutamate DecarboxylaseHippocampusHumansMicrotubule-Associated ProteinsNerve DegenerationNeuronsPeptidyl-Dipeptidase APhosphorylationRatstau ProteinsACE protein, humanAngiotensin-Converting Enzyme InhibitorsCaptoprilgamma-SynucleinGlutamate Decarboxylaseglutamate decarboxylase 2MAP2 protein, ratMicrotubule-Associated ProteinsPeptidyl-Dipeptidase Atau Proteins

Identifiers

PMID26697495
PMCPMC4677170
OpenAlexW2183219016

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Registered trials

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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.