Evidence map›Paper›PMID 20110603›Full record

ArticleJournal of Alzheimer's disease : JAD2010

Selective interaction of lansoprazole and astemizole with tau polymers: potential new clinical use in diagnosis of Alzheimer's disease.

Leonel E Rojo, Jans Alzate-Morales, Iván N Saavedra, Peter Davies, Ricardo B Maccioni

Open access · greenAbstract read
In one paragraph

Article in Journal of Alzheimer's disease : JAD, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 2 pooled it
5.0field-weighted citation impact, top 4% 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

62 citing papers in PubMed, 2 syntheses or guidelines pooled it, 139 citations in OpenAlex.

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2 more citing papers are in PubMed but not listed here.

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 2 countries.

Leonel E RojoInternational Center for Biomedicine (ICC), Faculty of Sciences, University of Chile, Santiago, Chile.
Jans Alzate-Morales
Iván N Saavedra
Peter Davies
Ricardo B Maccioni
University of Chile · CLAlbert Einstein College of Medicine · USArturo Prat University · CLUniversity of Talca · CL

Funding

AGING AND DEMENTIA: CHOLINERGIC NEURON BIOCHEMISTRYR01MH038623 · NIMH · YESHIVA UNIVERSITY · PI DAVIES, PETER P · 1985 to 2010
$3.6M
A Mouse Model of Tau Pathology in AD and Other DementiasR01AG022102 · NIA · FEINSTEIN INSTITUTE FOR MEDICAL RESEARCH · PI DAVIES, PETER P · 2013 to 2017
$1.7M
NIA NIH HHS R01 AG022102NIMH NIH HHS R01 MH038623
6 · The paper itself

Abstract

We describe the interactions of two benzimidazole derivatives, astemizole (AST) and lansoprazole (LNS), with anomalous aggregates of tau protein (neurofibrillary tangles). Interestingly, these compounds, with important medical applications in the treatment of allergies and gastrointestinal disorders respectively, specifically bind to aggregated variants of tau protein and to paired helical filaments isolated from brains of Alzheimer's disease (AD) patients. These ligands appear to be a powerful tool to tag brain-isolated tau-aggregates and heparin-induced polymers of recombinant tau. The interactions of AST and LNS with tau aggregates were assessed by classical radioligand assays, surface plasmon resonance, and bioinformatic approaches. The affinity of AST and LNS for tau aggregates was comparatively higher than that for amyloid-beta polymers according to our data. This is relevant since senile plaques are also abundant but are not pathognomonic in AD patients. Immunochemical studies on paired helical filaments from brains of AD patients and surface plasmon resonance studies confirm these findings. The capacity of these drugs to penetrate the blood-brain barrier was evaluated: i) in vitro by parallel artificial membrane permeability assay followed by experimental Log P determinations; and ii) in vivo by pharmacokinetic studies comparing distribution profiles in blood and brain of mice using HPLC/UV. Importantly, our studies indicate that the brain/blood concentration ratios for these compounds were suitable for their use as PET radiotracers. Since neurofibrillary tangles are positively correlated with cognitive impairment, we concluded that LNS and AST have a great potential in PET neuroimaing for in vivo early detection of AD and in reducing the formation of neurofibrillary tangles.

Indexed as

2-PyridinylmethylsulfinylbenzimidazolesAstemizoleEnzyme InhibitorsHistamine H1 Antagonists, Non-SedatingAlzheimer DiseaseBrainChromatography, High Pressure LiquidComputational BiologyDose-Response Relationship, DrugDrug InteractionsElectrochemical TechniquesElectron Microscope TomographyHumansLansoprazoleModels, MolecularNeurofibrillary Tangles2-PyridinylmethylsulfinylbenzimidazolesAstemizoleEnzyme InhibitorsHistamine H1 Antagonists, Non-SedatingLansoprazoletau ProteinsTritium

Identifiers

PMID20110603
PMCPMC2951486
OpenAlexW2124136478

What OpenQuestion holds

Textmetadata
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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.