Evidence map›Paper›PMID 21170472›Full record

ArticleMolecular medicine (Cambridge, Mass.)

Selective antihypertensive dihydropyridines lower Aβ accumulation by targeting both the production and the clearance of Aβ across the blood-brain barrier.

Daniel Paris, Corbin Bachmeier, Nikunj Patel, Amita Quadros, Claude-Henry Volmar, Vincent Laporte, Jim Ganey, David Beaulieu-Abdelahad, Ghania Ait-Ghezala, Fiona Crawford and 1 more

Open access · goldAbstract read
In one paragraph

Article in Molecular medicine (Cambridge, Mass.). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 2 pooled it
4.6field-weighted citation impact, top 5% 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

61 citing papers in PubMed, 2 syntheses or guidelines pooled it, 111 citations in OpenAlex.

  1. Pooled it
  2. Drug repositioning for Alzheimer's disease.Nature reviews. Drug discovery · 2012
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  6. Current updates on latest basic research of scientific relevance in hypertensive dementia.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Review
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1 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

11 authors at 1 institution in 1 country.

Daniel ParisThe Roskamp Institute, Sarasota, Florida 34243, United States of America. dparis@rfdn.org
Corbin Bachmeier
Nikunj Patel
Amita Quadros
Claude-Henry Volmar
Vincent Laporte
Jim Ganey
David Beaulieu-Abdelahad
Ghania Ait-Ghezala
Fiona Crawford
Michael J Mullan
Roskamp Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Several large population-based or clinical trial studies have suggested that certain dihydropyridine (DHP) L-type calcium channel blockers (CCBs) used for the treatment of hypertension may confer protection against the development of Alzheimer disease (AD). However, other studies with drugs of the same class have shown no beneficial clinical effects. To determine whether certain DHPs are able to impact underlying disease processes in AD (specifically the accumulation of the Alzheimer Aβ peptide), we investigated the effect of several antihypertensive DHPs and non-DHP CCBs on Aβ production. Among the antihypertensive DHPs tested, a few, including nilvadipine, nitrendipine and amlodipine inhibited Aβ production in vitro, whereas others had no effect or raised Aβ levels. In vivo, nilvadipine and nitrendipine acutely reduced brain Aβ levels in a transgenic mouse model of AD (Tg PS1/APPsw) and improved Aβ clearance across the blood-brain barrier (BBB), whereas amlodipine and nifedipine were ineffective showing that the Aβ-lowering activity of the DHPs is independent of their antihypertensive activity. Chronic oral treatment with nilvadipine decreased Aβ burden in the brains of Tg APPsw (Tg2576) and Tg PS1/APPsw mice, and also improved learning abilities and spatial memory. Our data suggest that the clinical benefit conferred by certain antihypertensive DHPs against AD is unrelated to their antihypertensive activity, but rely on their ability to lower brain Aβ accumulation by affecting both Aβ production and Aβ clearance across the BBB.

Indexed as

Alzheimer DiseaseAmlodipineAmyloid beta-PeptidesAmyloid beta-Protein PrecursorAnimalsAntihypertensive AgentsBlood-Brain BarrierBlotting, WesternBrainCalcium Channel BlockersCell LineCell Line, TumorCHO CellsCricetinaeCricetulusDihydropyridinesAmlodipineAmyloid beta-PeptidesAmyloid beta-Protein PrecursorAntihypertensive AgentsCalcium Channel BlockersDihydropyridinesNifedipinenilvadipineNitrendipine

Identifiers

PMID21170472
PMCPMC3060987
OpenAlexW2211218327

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.