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  • Title: In vitro antimycobacterial and antilegionella activity of licochalcone A from Chinese licorice roots.
    Author: Friis-Møller A, Chen M, Fuursted K, Christensen SB, Kharazmi A.
    Journal: Planta Med; 2002 May; 68(5):416-9. PubMed ID: 12058317.
    Abstract:
    Licochalcone A, extracted and purified from Chinese licorice roots, showed in vitro inhibitory effect on human pathogenic Mycobacteria species and Legionella species. M. tuberculosis, M. bovis and BCG were inhibited by < 20 mg/l licochalcone A, whereas all non- M. tuberculosis complex species were resistant to > 20 mg/l Legionella pneumophila (serogroups 1 - 7) and L. bozemanii, L. dumoffii, L. feelei, L. longbeacheae and L. wadsworthii were inhibited by licochalcone A 1 - 4 mg/l, whereas L. gormanii and L. micdadei were inhibited by licochalcone A 500 - 1000 mg/l. These data indicate that licochalcone A might be of interest as a new class of antibacterial drug in the treatment of severe lung-infections.
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