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  • 1.
    Muzila, Mbaki
    et al.
    Swedish University of Agricultural Sciences, Balsgård.
    Rumpunen, Kimmo
    Swedish University of Agricultural Sciences, Balsgård.
    Wright, Helen
    Storbritannien.
    Roberts, Helen
    Storbritannien.
    Grant, Melissa
    Storbritannien.
    Nybom, Hilde
    Swedish University of Agricultural Sciences, Balsgård.
    Sehic, Jasna
    Swedish University of Agricultural Sciences, Balsgård.
    Ekholm, Anders
    Swedish University of Agricultural Sciences, Balsgård.
    Widén, Cecilia
    Kristianstad University, School of Health and Society, Avdelningen för Oral hälsa och folkhälsovetenskap.
    Alteration of neutrophil reactive oxygen species production by extracts of Devil's Claw (Harpagophytum)2016In: Oxidative Medicine and Cellular Longevity, ISSN 1942-0900, E-ISSN 1942-0994, article id 3841803Article in journal (Refereed)
    Abstract [en]

    Harpagophytum, Devil's Claw, is a genus of tuberiferous xerophytic plants native to southern Africa. Some of the taxa are appreciated for their medicinal effects and have been traditionally used to relieve symptoms of inflammation. The objectives of this pilot study were to investigate the antioxidant capacity and the content of total phenols, verbascoside, isoverbascoside, and selected iridoids, as well as to investigate the capacity of various Harpagophytum taxa in suppressing respiratory burst in terms of reactive oxygen species produced by human neutrophils challenged with phorbol myristate acetate (PMA), opsonised Staphylococcus aureus, and Fusobacterium nucleatum. Harpagophytum plants were classified into different taxa according to morphology, and DNA analysis was used to confirm the classification. A putative new variety of H. procumbens showed the highest degree of antioxidative capacity. Using PMA, three Harpagophytum taxa showed anti-inflammatory effects with regard to the PBS control. A putative hybrid between H. procumbens and H. zeyheri in contrast showed proinflammatory effect on the response of neutrophils to F. nucleatum in comparison with treatment with vehicle control. Harpagophytum taxa were biochemically very variable and the response in suppressing respiratory burst differed. Further studies with larger number of subjects are needed to corroborate anti-inflammatory effects of different taxa of Harpagophytum.

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