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In Vitro Inhibition of the Transcription Factor NF-κB and Cyclooxygenase by Bamboo Extracts

Authors

  • Laura Van Hoyweghen,

    Corresponding author
    1. Laboratory of Pharmacognosy and Phytochemistry, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
    • Correspondence to: Dr. Arne Heyerick, Laboratory of Pharmacognosy and Phytochemistry, Faculty of Pharmaceutical Sciences, Ghent University, B-9000 Ghent, Belgium.

      E-mail: Arne.Heyerick@UGent.be

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  • Karolien De Bosscher,

    1. Laboratory of Eukaryotic Gene Expression and Signal Transduction (LEGEST), Department of Physiology, Ghent University, Ghent, Belgium
    2. Cytokine receptor Laboratory, Department of Medical Protein Research, VIB, and Department of Biochemistry, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
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  • Guy Haegeman,

    1. Laboratory of Eukaryotic Gene Expression and Signal Transduction (LEGEST), Department of Physiology, Ghent University, Ghent, Belgium
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  • Dieter Deforce,

    1. Laboratory of Pharmacognosy and Phytochemistry, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
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  • Arne Heyerick

    1. Laboratory of Pharmacognosy and Phytochemistry, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
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Abstract

Several bamboo species have been used in traditional medicine for the treatment of inflammatory conditions. The present study evaluates the in vitro anti-inflammatory properties of the traditionally used bamboo species Phyllostachys nigra (Lodd.) Munro and Sasa veitchii (Carr.) Rehder to explore their future research opportunities and therapeutic potential as anti-inflammatory agents. The extracts were evaluated for their potential inhibitory activity at the level of NF-κB-induced gene expression and suppression of cyclooxygenase (COX)-1 and COX-2 enzyme activities, representative pharmacological targets for the anti-inflammatory action of glucocorticoids and non-steroidal anti-inflammatory drugs, respectively. The activity of P. nigra (Lodd.) Munro and S. veitchii (Carr.) Rehder was compared with bamboo species without traditional anti-inflammatory indications. High-performance liquid chromatography with diode-array detection and liquid chromatography–tandem mass spectrometry analyses were performed to phytochemically characterize the extracts. P. nigra (Lodd.) Munro leaf extract potently inhibited NF-κB-induced gene expression, while S. veitchii (Carr.) Rehder leaf extract exerted a selective COX-2 inhibition. The crude extracts consistently showed a more potent bioactivity than the solid phase extraction fractions. P. nigra (Lodd.) Munro and S. veitchii (Carr.) Rehder both exert anti-inflammatory properties, but act via a different molecular mechanism. Copyright © 2013 John Wiley & Sons, Ltd.

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