Evidence map›Paper›PMID 27431863›Full record

ArticlePharmaceutical research2016

Alterations in P-Glycoprotein Expression and Function Between Macrophage Subsets.

Theodore J Cory, Hui He, Lee C Winchester, Santosh Kumar, Courtney V Fletcher

Open access · greenAbstract read
In one paragraph

Article in Pharmaceutical research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

32 citing papers in PubMed, 44 citations in OpenAlex.

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  9. High and Low Levels ofInternational journal of molecular sciences · 2023
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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.

Theodore J CoryDepartment of Clinical Pharmacy, University of Tennessee Health Science Center College of Pharmacy, Memphis, Tennessee, 38163, USA. tcory1@uthsc.edu.
Hui HeDepartment of Clinical Pharmacy, University of Tennessee Health Science Center College of Pharmacy, Memphis, Tennessee, 38163, USA.
Lee C WinchesterAntiviral Pharmacology Laboratory, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska, USA.
Santosh KumarDepartment of Pharmaceutical Sciences, University of Tennessee Health Science Center College of Pharmacy, Memphis, Tennessee, USA.
Courtney V FletcherAntiviral Pharmacology Laboratory, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska, USA.
University of Tennessee Health Science Center · USUniversity of Nebraska Medical Center · US

Funding

Validation, CLIA and Qualification (VQC): Enhancing the RS ratio as a tool for AIDS Clinical Trial Group (ACTG) tuberculosis trialsUM1AI106701 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI Grace M Aldrovandi · 2014 to 2026
$116.8M
Virological Measurements of Cryptic ReplicationP01AI074340 · NIAID · UNIVERSITY OF MINNESOTA · PI SCHACKER, TIMOTHY W · 2008 to 2012
$12.1M
Reversing Tissue Fibrosis to Improve Immune Reconstitution in HIVU01AI105872 · NIAID · UNIVERSITY OF MINNESOTA · PI SCHACKER, TIMOTHY W · 2013 to 2017
$5.3M
Adipose Tissue is a significant reservoir for HIVR21AI116208 · NIAID · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI BALASUBRAMANYAM, ASHOK, LEWIS, DOROTHY E. · 2014 to 2015
$466k
NIAID NIH HHS P01 AI074340NIAID NIH HHS R21 AI116208NIAID NIH HHS U01 AI105872NIAID NIH HHS UM1 AI106701
6 · The paper itself

Abstract

purposeMacrophages are an important cellular reservoir in HIV, and exist in two phenotypically dissimilar subsets, the pro-inflammatory M1 phenotype, and the anti-inflammatory M2 phenotype. The role of these two subsets is uncertain. We hypothesized that differences in drug efflux transporters exist between the subsets, which would result in altered intracellular drug concentrations between these cells.

methodsU937 monocytic cells were polarized to the M1 or M2 phenotype via treatment with interferon-gamma and LPS, or interleukins 4, 13, and LPS, respectively. PGP function was assessed with Hoechst 33342, and expression via western blotting. Intracellular lopinavir was assessed via LC-MS/MS. Data was confirmed with primary monocyte derived macrophages.

resultsWe observed significant differences in intracellular concentrations of lopinavir, a PGP substrate, with higher concentrations in M1 cells. PGP function and expression was higher in the M2 macrophages. These results were confirmed with primary monocyte derived macrophages.

conclusionsThis data shows that there are previously unreported differences in P-glycoprotein expression between macrophage subsets, and suggests that there may be differences for other transporters. These differences can play a role in intracellular drug concentrations in these cells, and may allow for low-level HIV replication.

Indexed as

Anti-HIV AgentsArginaseATP Binding Cassette Transporter, Subfamily B, Member 1BenzimidazolesCell PolarityCytokinesFluorescent DyesHumansIntracellular SpaceLopinavirMacrophagesPhenotypeU937 CellsAnti-HIV AgentsArginaseATP Binding Cassette Transporter, Subfamily B, Member 1Benzimidazolesbisbenzimide ethoxide trihydrochlorideCytokinesFluorescent DyesLopinaviralternatively activated macrophageclassically activated macrophageHoechst 33342P-glycoprotein

Identifiers

PMID27431863
PMCPMC5042840
OpenAlexW2485575528

What OpenQuestion holds

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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.