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    In vitro Assessment of Antioxidant, Antimicrobial, Cytotoxic, Anti‑inflammatory, and Antidiabetic Activities of Campanula retrorsa Crude Extracts

    Josiane Alhage1,2, Hoda Elbitar1, Samir Taha1,3, Thierry Benvegnu2★★ Corresponding author

    1. 1AZM Centre for Research in Biotechnology and Its Applications, Laboratory of Applied Biotechnology for Biomolecules, Biotherapy and Bioprocess, Lebanese University, Tripoli, LIBYA.
    2. 2Univ Rennes, ENSCR, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 35000 Rennes, FRANCE.
    3. 3Faculty of Public Health, Rafic Hariri Campus, Lebanese University, Hadath, Beirut, LEBANON.

    CORRESPONDENCE

    Thierry Benvegnu

    Univ Rennes, ENSCR, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, 35000 Rennes, FRANCE.

    thierry.benvegnu@xn--enscrennes-tt6e.fr

    Volume 10, Issue 4 · pp. 397–403 · PUBLISHED · DOI: 10.4103/pr.pr_73_18

    View on Pharmacogn. Res. original site ↗

    ABSTRACT

    Background:Campanula retrorsa belongs to the Campanulaceae family and the Campanula genus. The species of this latter are traditionally known for their antiallergic, spasmolytic, antiphlogistic, antioxidant, and antiviral properties. Few studies were realized on the bioactivity of Calicotome villosa crude extracts. Objective:The objective was to investigate, for the first time, the antioxidant, antimicrobial, cytotoxic, antidiabetic, and anti‑inflammatory potentials of dichloromethane, methanol, and aqueous crude extracts of C. retrorsa leaves, flowers, and stems. Materials and Methods: The antioxidant activity of different crude extracts was determined using the free radical, 1, 1‑diphenyl‑2‑picrylhydrazyl. Antimicrobial activity against three Gram‑positive (Staphylococcus aureus, Bacillus cereus, and Enterococcus faecium), two Gram‑negative (Escherichia coli, Pseudomonas aeruginosa, and Acinetobacter baumanii) bacterial strains and a fungal strain (Candida albicans) was evaluated in a plate‑hole diffusion assay. Cytotoxic activity of C. retrorsadichloromethane and methanol crude extracts on Hela cells was realized using the Trypan blue dye exclusion technique. Antidiabetic activity against α‑glucosidase and anti‑inflammatory activity against bee venom phospholipase A2 (PLA2) were assessed using a colorimetric test. Results: Leaf and flower aqueous extracts possessed very high radical scavenging activity = 90%. The dichloromethane extracts of leaves and flowers were the most active against A. baumanii and C. albicans. After 48 h of treatment, all extracts except the methanol flower extract showed an inhibition of 90% of cell growth at 2 mg/mL. Dichloromethane and methanol stem crude extracts showed a modest inhibition of α‑glucosidase. While no inhibition of the PLA2 was displayed by any of the tested extracts. Conclusion:Obtained results give an overall view on C. retrorsa crude extracts’ bioactivities.

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      Alhage, J., Elbitar, H., Taha, S., & Benvegnu, T. (). In vitro Assessment of Antioxidant, Antimicrobial, Cytotoxic, Anti‑inflammatory, and Antidiabetic Activities of Campanula retrorsa Crude Extracts. Pharmacognosy Research, 10(4), 397–403. https://doi.org/10.4103/pr.pr_73_18