Evidence map›Paper›PMID 23512537›Full record

ArticleThe Journal of pharmacology and experimental therapeutics2013

Metabolism of beclomethasone dipropionate by cytochrome P450 3A enzymes.

Jessica K Roberts, Chad D Moore, Robert M Ward, Garold S Yost, Christopher A Reilly

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of pharmacology and experimental therapeutics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
5.2field-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

12 citing papers in PubMed, 37 citations in OpenAlex.

  1. Article
  2. Article
  3. Impact of CYP3A5 Polymorphisms on Pediatric Asthma Outcomes.International journal of molecular sciences · 2024
    Article
  4. Article
  5. Review
  6. Article
  7. Article
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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 1 institution in 1 country.

Jessica K RobertsDepartment of Pharmacology and Toxicology, College of Pharmacy, University of Utah, Salt Lake City, Utah, USA.
Chad D Moore
Robert M Ward
Garold S Yost
Christopher A Reilly
University of Utah · US

Funding

P450-Mediated Dehydrogenation MechanismsR01GM074249 · NIGMS · UNIVERSITY OF UTAH · PI REILLY, CHRISTOPHER A · 2006 to 2014
$2.4M
P450 Metabolism of Glucocorticoids in Lungs of Pediatric AsthmaticsR01HD060559 · NICHD · UNIVERSITY OF UTAH · PI REILLY, CHRISTOPHER A · 2010 to 2014
$2.3M
Howard Hughes Medical Institute 56006777NICHD NIH HHS R01 HD060559NICHD NIH HHS R01HD060559NIGMS NIH HHS GM074249NIGMS NIH HHS R01 GM074249
6 · The paper itself

Abstract

Inhaled glucocorticoids, such as beclomethasone dipropionate (BDP), are the mainstay treatment of asthma. However, ≈ 30% of patients exhibit little to no benefit from treatment. It has been postulated that glucocorticoid resistance, or insensitivity, is attributable to individual differences in glucocorticoid receptor-mediated processes. It is possible that variations in cytochrome P450 3A enzyme-mediated metabolism of BDP may contribute to this phenomenon. This hypothesis was explored by evaluating the contributions of CYP3A4, 3A5, 3A7, and esterase enzymes in the metabolism of BDP in vitro and relating metabolism to changes in CYP3A enzyme mRNA expression via the glucocorticoid receptor in lung and liver cells. CYP3A4 and CYP3A5 metabolized BDP via hydroxylation ([M4] and [M6]) and dehydrogenation ([M5]) at similar rates; CYP3A7 did not metabolize BDP. A new metabolite [M6], formed by the combined action of esterases and CYP3A4 hydroxylation, was also characterized. To validate the results observed using microsomes and recombinant enzymes, studies were also conducted using A549 lung and DPX2 liver cells. Both liver and lung cells produced esterase-dependent metabolites [M1-M3], with [M1] correlating with CYP3A5 mRNA induction in A549 cells. Liver cells produced both hydroxylated and dehydrogenated metabolites [M4, M5, and M6], but lung cells produced only the dehydrogenated metabolite [M5]. These studies show that CYP3A4 and CYP3A5 metabolize BDP to inactive metabolites and suggest that differences in the expression or function of these enzymes in the lung and/or liver could influence BDP disposition in humans.

Indexed as

Administration, InhalationAnti-Inflammatory AgentsBeclomethasoneCell LineChromatography, High Pressure LiquidCytochrome P-450 CYP3ADNA PrimersHalf-LifeHumansIsoenzymesLungPolymerase Chain ReactionTandem Mass SpectrometryAnti-Inflammatory AgentsBeclomethasoneCytochrome P-450 CYP3ADNA PrimersIsoenzymes

Identifiers

PMID23512537
PMCPMC3629798
OpenAlexW2125317395

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.