Evidence map›Paper›PMID 19204293›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

Small molecule blockers of the Alzheimer Abeta calcium channel potently protect neurons from Abeta cytotoxicity.

Juan Carlos Diaz, Olga Simakova, Kenneth A Jacobson, Nelson Arispe, Harvey B Pollard

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
5.9field-weighted citation impact, top 3% 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

52 citing papers in PubMed, 114 citations in OpenAlex.

  1. hLife · 2026
    Review
  2. Decoding the mechanisms of amyloid-β in synaptic toxicity.Journal of Alzheimer's disease : JAD · 2026
    Review
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Endogenous Amyloid-formed CaFunction (Oxford, England) · 2023
    Article
  9. Article
  10. Misfolded protein oligomers induce an increase of intracellular CaCellular and molecular life sciences : CMLS · 2022
    Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Review
  16. Hexahydropyrrolo[2,3-ACS chemical neuroscience · 2019
    Article
  17. Article
  18. Article
  19. 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 2 institutions in 1 country.

Juan Carlos DiazDepartment of Anatomy, Physiology and Genetics, Uniformed Services University School of Medicine, Bethesda, MD 20814, USA.
Olga Simakova
Kenneth A Jacobson
Nelson Arispe
Harvey B Pollard
Uniformed Services University of the Health Sciences · USNational Institutes of Health · US

Funding

Development of Drugs Acting at Ion ChannelsZIADK031127 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI JACOBSON, KENNETH ALAN · 2009 to 2025
$3.9M
ZINC AND THE SYNTHESIS OF ZINC BINDING PROTEINSR01DK031127 · NIDDK · UNIVERSITY OF FLORIDA · PI COUSINS, ROBERT J · 1986 to 2009
$2.9M
Development of Drugs Acting at Ion ChannelsZ01DK031127 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI JACOBSON, KENNETH ALAN · 2007 to 2008
$385k
Zinc and the Synthesis of Binding ProteinsR56DK031127 · NIDDK · UNIVERSITY OF FLORIDA · PI COUSINS, ROBERT J · 2010 to 2010
$325k
ZINC AND THE SYTHESIS OF ZINC BINDING PROTEINSR37DK031127 · NIDDK · UNIVERSITY OF FLORIDA · PI COUSINS, ROBERT J · 1992 to 1999
–
Intramural NIH HHS Z01 DK031127NIDDK NIH HHS R01 DK031127NIDDK NIH HHS R37 DK031127NIDDK NIH HHS R56 DK031127
6 · The paper itself

Abstract

Alzheimer's disease (AD) is a common, chronic neurodegenerative disease that is thought to be caused by the neurotoxic effect of the Amyloid beta peptides (Abeta). We have hypothesized that the intrinsic Abeta calcium channel activity of the oligomeric Abeta polymer may be responsible for the neurotoxic properties of Abeta, and that Abeta channel blockers may be candidate AD therapeutics. As a consequence of a rational search paradigm based on the model structure of the Abeta channel, we have identified two compounds of interest: MRS2481 and an enatiomeric species, MRS2485. These are amphiphilic pyridinium salts that both potently block the Abeta channel and protect neurons from Abeta toxicity. Both block the Abeta channel with similar potency (approximately 500 nM) and efficacy (100%). However, we find that inhibition by MRS2481 is easily reversible, whereas inhibition by MRS2485 is virtually irreversible. We suggest that both species deserve consideration as candidates for Alzheimer's disease drug discovery.

Indexed as

Alzheimer DiseaseAmyloid beta-PeptidesAnimalsCalcium Channel BlockersCalcium ChannelsMolecular StructureNeuroprotective AgentsPC12 CellsPhenylpropionatesProtein BindingPyridinesRatsAmyloid beta-PeptidesCalcium Channel BlockersCalcium ChannelsMRS 2481MRS 2485Neuroprotective AgentsPhenylpropionatesPyridines

Identifiers

PMID19204293
PMCPMC2637905
OpenAlexW2099174404

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.