Evidence map›Paper›PMID 19041719›Full record

ArticleEuropean journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences2009

Nonionic surfactants are strong inhibitors of cytochrome P450 3A biotransformation activity in vitro and in vivo.

Xiuhua Ren, Xinliang Mao, Lei Cao, Kewen Xue, Luqin Si, Jun Qiu, Aaron D Schimmer, Gao Li

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Article in European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
4.6field-weighted citation impact, top 7% 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

21 citing papers in PubMed, 57 citations in OpenAlex.

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  10. Regulations of Xenobiotics and Endobiotics on Carboxylesterases: A Comprehensive Review.European journal of drug metabolism and pharmacokinetics · 2016
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  17. Review
  18. Article
  19. Inhibitive effect of cremophor RH40 or tween 80-based self-microemulsiflying drug delivery system on cytochrome P450 3A enzymes in murine hepatocytes.Journal of Huazhong University of Science and Technology. Medical sciences = Hua zhong ke ji da xue xue bao. Yi xue Ying De wen ban = Huazhong keji daxue xuebao. Yixue Yingdewen ban · 2010
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Xiuhua RenSchool of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, PR China.
Xinliang Mao
Lei Cao
Kewen Xue
Luqin Si
Jun Qiu
Aaron D Schimmer
Gao Li
Huazhong University of Science and Technology · CNOntario Institute for Cancer Research · CAPrincess Margaret Cancer Centre · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nonionic surfactants are commonly used as excipients in pharmaceutical formulation, but recent studies demonstrate that the ingredients affect the pharmacokinetics of the active drugs. However, the mechanisms are largely unknown. Here, we examined the effects of four common nonionic surfactants polysorbate 20, polyoxyl 35 castor oil, polyoxyl 40 stearate and poloxamer 188, on cytochrome P450 3A in vitro and in vivo using midazolam as a probe. We first examined the effects of these surfactants on the 1'-hydroxylation of midazolam in isolated rat liver and intestinal microsomes. All the surfactants tested inhibited midazolam 1'-hydroxylation in a concentration-dependent manner and presented a mixed competitive inhibitory model with decreased V(max) and increased K(m) values in vitro. Among the tested nonionic surfactants, polysorbate 20 was the most potent inhibitor of midazolam 1'-hydroxylation with an IC(50) of 2.06 and 0.39mgml(-1) in the liver and intestinal microsomes, respectively. These surfactants were also tested in vivo as we investigated their effects on the pharmacokinetics of midazolam in rats. These four surfactants displayed different inhibitory patterns in terms of the AUC of midazolam and 1'-hydroxymidazolam. Polysorbate 20 significantly increased both AUC(0-4h) and AUC(0-infinity) of midazolam and decreased the AUC(0-4h) of 1'-hydroxymidazolam to about 40% (p<0.05) in both single- and multiple-treated rats, along with a significant decrease of the metabolic ratio of 1'-hydroxymidazolam/midazolam to 25%. Polyoxyl 35 castor oil, polyoxyl 40 stearate and poloxamer 188 displayed complicated inhibition on the 1'-hydroxylation of midazolam dependent on the administration formula. These results confirmed that effects of these surfactants would have potential inhibitory effects on cytochrome P450 3A and altered midazolam bioavailability. Therefore, caution is needed when selecting nonionic surfactants in drug formulation.

Indexed as

Cytochrome P-450 CYP3A InhibitorsAnimalsArea Under CurveBiotransformationEnzyme InhibitorsMaleRatsRats, Sprague-DawleySurface-Active AgentsCytochrome P-450 CYP3A InhibitorsEnzyme InhibitorsSurface-Active Agents

Identifiers

PMID19041719
OpenAlexW2036181656

What OpenQuestion holds

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Registered trials

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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.