Planta Med 2013; 79(02): 137-141
DOI: 10.1055/s-0032-1328055
Pharmacokinetic Investigations
Letters
Georg Thieme Verlag KG Stuttgart · New York

In Vitro Inhibition of Cytochrome P450 3A4 by Aronia melanocarpa Constituents

Authors

  • Marie Bräunlich

    1   School of Pharmacy, Department of Pharmaceutical Chemistry, University of Oslo, Blindern, Oslo, Norway
  • Hege Christensen

    2   School of Pharmacy, Department of Pharmaceutical Biosciences, University of Oslo, Blindern, Oslo, Norway
  • Siri Johannesen

    2   School of Pharmacy, Department of Pharmaceutical Biosciences, University of Oslo, Blindern, Oslo, Norway
  • Rune Slimestad

    3   PlantChem, Særheim Research Center, Klepp Station, Norway
  • Helle Wangensteen

    1   School of Pharmacy, Department of Pharmaceutical Chemistry, University of Oslo, Blindern, Oslo, Norway
  • Karl E. Malterud

    1   School of Pharmacy, Department of Pharmaceutical Chemistry, University of Oslo, Blindern, Oslo, Norway
  • Hilde Barsett

    1   School of Pharmacy, Department of Pharmaceutical Chemistry, University of Oslo, Blindern, Oslo, Norway
Further Information

Publication History

received 26 September 2012
revised 07 November 2012

accepted 09 November 2012

Publication Date:
18 December 2012 (online)

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Abstract

Extracts, subfractions, isolated anthocyanins and procyanidins, and two phenolic acids from aronia [Aronia melanocarpa] were investigated for their CYP3A4 inhibitory effects, using midazolam as the probe substrate and recombinant insect cell microsomes expressing CYP3A4 as the enzyme source. Procyanidin B5 was a considerably stronger CYP3A4 inhibitor in vitro than the isomeric procyanidin B2 and comparable to bergamottin, a known CYP3A4 inhibitor from grapefruit juice. The inhibitory activity of proanthocyanidin-containing fractions was correlated to the degree of polymerization. Among the anthocyanins, cyanidin 3-arabinoside showed stronger CYP3A4 inhibition than cyanidin 3-galactoside and cyanidin 3-glucoside. Thus, the ability to inhibit CYP3A4 in vitro seems to be influenced by the sugar unit linked to the anthocyanidin.

Supporting Information