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  • Effects of Chelidonium majus extracts and major alkaloids on hERG potassium channels and on dog cardiac action potential - a safety approach.

Effects of Chelidonium majus extracts and major alkaloids on hERG potassium channels and on dog cardiac action potential - a safety approach.

Fitoterapia (2014-12-08)
Péter Orvos, László Virág, László Tálosi, Zsuzsanna Hajdú, Dezső Csupor, Nikoletta Jedlinszki, Tamás Szél, András Varró, Judit Hohmann
ABSTRACT

Chelidonium majus or greater celandine is spread throughout the world, and it is a very common and frequent component of modern phytotherapy. Although C. majus contains alkaloids with remarkable physiological effect, moreover, safety pharmacology properties of this plant are not widely clarified, medications prepared from this plant are often used internally. In our study the inhibitory effects of C. majus herb extracts and alkaloids on hERG potassium current as well as on cardiac action potential were investigated. Our data show that hydroalcoholic extracts of greater celandine and its alkaloids, especially berberine, chelidonine and sanguinarine have a significant hERG potassium channel blocking effect. These extracts and alkaloids also prolong the cardiac action potential in dog ventricular muscle. Therefore these compounds may consequently delay cardiac repolarization, which may result in the prolongation of the QT interval and increase the risk of potentially fatal ventricular arrhythmias.

MATERIALS
Product Number
Brand
Product Description

Supelco
L-Glutamine, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
L-Glutamine
Berberine chloride, European Pharmacopoeia (EP) Reference Standard
Supelco
L-Glutamine, certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
Sigma-Aldrich
L-Glutamine, meets USP testing specifications, suitable for cell culture, 99.0-101.0%, from non-animal source
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L-Glutamine, γ-irradiated, BioXtra, suitable for cell culture
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L-Glutamine
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Chelerythrine chloride, ≥95% (TLC), powder
SAFC
L-Glutamine
Sigma-Aldrich
Berberine chloride form
Sigma-Aldrich
L-Glutamine, BioUltra, ≥99.5% (NT)
Sigma-Aldrich
Berberine chloride hydrate, technical, ≥90% (AT)
Sigma-Aldrich
Chelidonine, ≥97.0% (HPLC)
Supelco
Berberine Chloride, Pharmaceutical Secondary Standard; Certified Reference Material