Evidence map›Paper›PMID 23974515›Full record

ArticleActa pharmacologica Sinica2013

Sensitive assay for measurement of volatile borneol, isoborneol, and the metabolite camphor in rat pharmacokinetic study of Borneolum (Bingpian) and Borneolum syntheticum (synthetic Bingpian).

Chen Cheng, Xin-Wei Liu, Fei-Fei Du, Mei-Juan Li, Fang Xu, Feng-Qing Wang, Yang Liu, Chuan Li, Yan Sun

Open access · bronzeAbstract readValidation Study
In one paragraph

Article in Acta pharmacologica Sinica, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
10.8field-weighted citation impact, top 2% 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

17 citing papers in PubMed, 58 citations in OpenAlex.

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  12. β-Caryophyllene in the Essential Oil fromMolecules (Basel, Switzerland) · 2019
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  15. Monoterpenes as inhibitors of digestive enzymes and counter-adaptations in a specialist avian herbivore.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2015
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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

9 authors at 2 institutions in 1 country.

Chen ChengShanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
Xin-Wei Liu
Fei-Fei Du
Mei-Juan Li
Fang Xu
Feng-Qing Wang
Yang Liu
Chuan Li
Yan Sun
Shanghai Institute of Materia Medica · CNChinese Academy of Sciences · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimBoth Borneolum (Chinese name Bingpian; dextrorotatory borneol) and Borneolum syntheticum (synthetic Bingpian; a mixture of optically inactive borneol and isoborneol) have been used for medicinal purposes in Chinese traditional medicine. The aim of this study was to develop a sensitive assay for measuring volatile ingredients borneol, isoborneol, and their metabolite camphor in pharmacokinetic study of Bingpian.

methodsRat plasma samples were prepared using liquid-liquid microextraction: 70 μL of plasma sample (containing 125 nmol/L naphthalene as the internal standard) was extracted with 35 μL of n-hexane. The resulting n-hexane extract (20 μL) was introduced into a gas chromatography/mass spectrometry system using programmable temperature vaporizing-based large-volume injection. The assay was validated to demonstrate its reliability for the intended use. Using this assay, pharmacokinetic studies of Bingpian, synthetic Bingpian, and Fufang-Danshen tablets (containing synthetic Bingpian) were conducted in rats.

resultsThe extraction efficiency for the analytes and the internal standard from plasma was almost constant with decrease in n-hexane-to-plasma volume ratio, thus enabling a small volume of extracting solvent to be used for sample preparation, and enhancing the assay sensitivity. The lower quantification limit for measuring borneol, isoborneol, and camphor in plasma was 0.98 nmol/L, which was 33-330 times more sensitive than those reported earlier for Bingpian and synthetic Bingpian. The applicability of the miniaturized liquid-liquid extraction technique could be extended to measure other volatile and nonvolatile medicinal compounds in biomatrices, which can be predicted according to the analytes' octanol/water distribution coefficient (logD) and acid dissociation constant (pKa).

conclusionThis assay is sensitive, accurate and free of matrix effects, and can be applied to pharmacokinetic studies of Bingpian, synthetic Bingpian, and Bingpian-containing herbal products.

Indexed as

AnimalsCamphanesCamphorDrugs, Chinese HerbalGas Chromatography-Mass SpectrometryLimit of DetectionLiquid Phase MicroextractionMaleRatsRats, Sprague-DawleySensitivity and SpecificitySolventsTabletsCamphanesCamphorDrugs, Chinese HerbalisoborneolSolventsTablets

Identifiers

PMID23974515
PMCPMC4002161
OpenAlexW2086198595

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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.