Evidence map›Paper›PMID 28983678›Full record

ArticleEuropean journal of clinical pharmacology2018

The effect of quercetin on the pharmacokinetics of chlorzoxazone, a CYP2E1 substrate, in healthy subjects.

Satish Kumar Bedada, Prasad Neerati

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In one paragraph

Article in European journal of clinical pharmacology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
3.0field-weighted citation impact, top 10% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Article
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Mango (Molecules (Basel, Switzerland) · 2021
    Review
  11. Pharmaceutical biology · 2020
    Article
  12. Porcine cytochrome 2A19 and 2E1.Basic & clinical pharmacology & toxicology · 2019
    Review
  13. Article
  14. Article
  15. Similar effect of quercetin on CYP2E1 and CYP2C9 activities in humans?European journal of clinical pharmacology · 2018
    Article
  16. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Satish Kumar BedadaDrug Metabolism and Pharmacokinetics Division, University College of Pharmaceutical Sciences, Kakatiya University, Warangal, Telangana State, 506009, India. satishbedada@gmail.com.
Prasad NeeratiDrug Metabolism and Pharmacokinetics Division, University College of Pharmaceutical Sciences, Kakatiya University, Warangal, Telangana State, 506009, India.
Kakatiya University · IN

Funding

University Grants Commission F.7-106/2007. BSR
6 · The paper itself

Abstract

purposePrevious in vitro studies have demonstrated that quercetin inhibits CYP2E1 enzyme, but there are no available data to indicate that quercetin inhibits CYP2E1 enzyme in humans. The purpose of the present study was to assess the effect of quercetin on CYP2E1 enzyme activity in healthy subjects using chlorzoxazone (CHZ) as a CYP2E1 substrate.

methodsAn open-label, two-period, sequential study was conducted in 12 healthy subjects. A single dose of CHZ 250 mg was given to subjects during control phase and after treatment phases. Quercetin at a dose of 500 mg was given to subjects twice daily for a period of 10 days. The blood samples were collected at predetermined time intervals after CHZ dosing and analyzed to determine the concentrations of CHZ and 6-hydroxychlorzoxazone (6-OHCHZ).

resultsTreatment with quercetin significantly enhanced the maximum plasma concentration (C

conclusionsThe results suggest that altered pharmacokinetics of CHZ might be attributed to quercetin-mediated inhibition of CYP2E1 enzyme. Further, the inhibition of CYP2E1 by quercetin may represent a novel therapeutic approach for minimizing the ethanol-induced CYP2E1 enzyme activity and results in reduced hepatotoxicity of ethanol.

Indexed as

AdultArea Under CurveBiological AvailabilityChemical and Drug Induced Liver InjuryChlorzoxazoneCytochrome P-450 CYP2E1Cytochrome P-450 CYP2E1 InhibitorsDrug InteractionsEthanolHealthy VolunteersHumansMaleQuercetinSubstrate SpecificityChlorzoxazoneCytochrome P-450 CYP2E1Cytochrome P-450 CYP2E1 InhibitorsEthanolQuercetinBioavailabilityChlorzoxazoneCYP2E1 enzymeHepatotoxicityMetabolismPharmacokineticsQuercetin

Identifiers

PMID28983678
OpenAlexW2763120162

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.