Evidence map›Paper›PMID 21718295›Full record

ArticleThe Journal of pharmacy and pharmacology2011

Up-regulation of P-glycoprotein reduces intracellular accumulation of beta amyloid: investigation of P-glycoprotein as a novel therapeutic target for Alzheimer's disease.

Alaa H Abuznait, Courtney Cain, Drury Ingram, David Burk, Amal Kaddoumi

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of pharmacy and pharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
4.5field-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

25 citing papers in PubMed, 71 citations in OpenAlex.

  1. Review
  2. Article
  3. Observational
  4. Review
  5. Review
  6. Repurposing Licensed Drugs for Use Against Alzheimer's Disease.Journal of Alzheimer's disease : JAD · 2021
    Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Review
  15. Amyloid-β and Astrocytes Interplay in Amyloid-β Related Disorders.International journal of molecular sciences · 2016
    Review
  16. Olive Oil and the Hallmarks of Aging.Molecules (Basel, Switzerland) · 2016
    Review
  17. Article
  18. Article
  19. Article
  20. Article
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.

Alaa H AbuznaitDepartment of Basic Pharmaceutical Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA.
Courtney Cain
Drury Ingram
David Burk
Amal Kaddoumi
Pennington Biomedical Research Center · USUniversity of Louisiana at Monroe · US

Funding

VISUAL AND ANALYTICAL TOOLS FOR CLUSTER ANALYSISP20RR016456 · NCRR · LOUISIANA STATE UNIV A&M COL BATON ROUGE · PI KLEI, THOMAS R. · 2001 to 2011
$28.7M
Research BaseP30DK072476 · NIDDK · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI ROBERT A KESTERSON · 2005 to 2026
$26.5M
THE ROLE OF PROTEIN MALNUTRITION ON CIRCADIAN PHYSIOLOGY OF C57BL/6J MOUSE DAMSP20RR021945 · NCRR · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI GETTYS, THOMAS W · 2006 to 2011
$9.5M
NCRR NIH HHS P20 RR016456NCRR NIH HHS P20 RR021945NCRR NIH HHS P20-RR021945NIDDK NIH HHS 1P30-DK072476NIDDK NIH HHS P30 DK072476
6 · The paper itself

Abstract

objectivesSeveral studies have suggested the efflux transporter P-glycoprotein (P-gp) to play a role in the etiology of Alzheimer's disease through the clearance of amyloid beta (Aβ) from the brain. In this study, we aimed to investigate the possibility of P-gp as a potential therapeutic target for Alzheimer's disease by examining the impact of P-gp up-regulation on the clearance of Aβ, a neuropathological hallmark of Alzheimer's disease.

methodsUptake studies for ¹²⁵I-radiolabelled Aβ₁₋₄₀, and fluorescent immunostaining technique for P-gp and fluorescent imaging of Aβ₁₋₄₀ were carried out in LS-180 cells following treatment with drugs known to induce P-gp expression. KEY

findingsApproximately 10-35% decrease in ¹²⁵I-Aβ₁₋₄₀ intracellular accumulation was observed in cells treated with rifampicin, dexamethasone, caffeine, verapamil, hyperforin, β-estradiol and pentylenetetrazole compared with control. Also, fluorescent micrographs showed an inverse relationship between levels of P-gp expression and 5-carboxyfluorescein labelled Aβ (FAM-Aβ₁₋₄₀) intracellular accumulation. Quantitative analysis of the micrographs revealed that the results were consistent with those of the uptake studies using ¹²⁵I-Aβ₁₋₄₀.

conclusionsThe investigated drugs were able to improve the efflux of Aβ₁₋₄₀ from the cells via P-gp up-regulation compared with control. Our results elucidate the importance of targeting Aβ clearance via P-gp up-regulation, which will be effective in slowing or halting the progression of Alzheimer's disease.

Indexed as

Alzheimer DiseaseAmyloid beta-PeptidesATP Binding Cassette Transporter, Subfamily B, Member 1CaffeineCell LineCentral Nervous System AgentsDexamethasoneEstradiolHumansPentylenetetrazolePhloroglucinolRifampinStaining and LabelingTerpenesUp-RegulationVerapamilAmyloid beta-PeptidesATP Binding Cassette Transporter, Subfamily B, Member 1CaffeineCentral Nervous System AgentsDexamethasoneEstradiolhyperforinPentylenetetrazolePhloroglucinolRifampinTerpenesVerapamil

Identifiers

PMID21718295
PMCPMC3163078
OpenAlexW1803013685

What OpenQuestion holds

Textmetadata
LicenceTDM
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.