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In-vitro anti-Helicobacter pylori activity and preliminary mechanism of action of Canarium album Raeusch. fruit extracts.
- Source :
-
Journal of ethnopharmacology [J Ethnopharmacol] 2022 Jan 30; Vol. 283, pp. 114578. Date of Electronic Publication: 2021 Aug 28. - Publication Year :
- 2022
-
Abstract
- Ethnopharmacological Relevance: Canarium album Raeusch. belongs to the Burseraceae family. Its ripe fruits, known as Qing Guo (QG) in Traditional Chinese Medicine (TCM), are used to treat sore throat, cough, and fish or crab poisoning. QG was reported to have antibacterial activity, and it exerted excellent anti-Helicobacter pylori (H. pylori) activity in our screening of abundant TCM. However, few studies have reported its anti-H. pylori activity and mechanism.<br />Aim of Study: The commonly used eradication therapies for H. pylori infection are antibiotic-based therapies. With the increasing antibiotic resistance of H. pylori, interest in finding alternative therapies has been aroused. This study investigated the phytochemistry profile, in vitro anti-H. pylori activity and possible anti-bacterial mechanism of QG extracts.<br />Materials and Methods: QG extracts were obtained by heat reflux extraction, ultrasonic extraction or liquid-liquid extraction with different solvents. The quantitative and qualitative phytochemical analyses were performed by colorimetric determination, high-performance liquid chromatography (HPLC), and UPLC-electrospray ionization mass spectrometry (ESI-MS). In vitro anti- H. pylori activity was assessed by broth micro-dilution method. Mechanism of action studies included morphological observation using electron microscopy, urease inhibition assay and determination of expression of virulence genes by RT-qPCR.<br />Results: All QG extracts especially ethyl acetate extract (QGEAE) were rich in phenolic components, with the minimum inhibitory concentrations (MICs) on H.pylori of 39-625 μg/ml and minimum bactericidal concentrations (MBCs) of 78-1250 μg/ml. Both aqueous extract (QGAE) and QGEAE could induce the morphological and structural changes of H. pylori, inhibit urease activity with IC <subscript>50</subscript> of 1093 μg/ml and 332.90 μg/ml, respectively, and down-regulate the virulence genes, such as vacA and cagA.<br />Conclusions: QG may exhibit in vitro anti-H. pylori activity by inhibiting growth, destroying the bacterial structure and down-regulating the expression of virulence factors. Moreover, QG is the homology of food and TCM, which can be considered as a safe and convenient agent against H. pylori infection.<br /> (Copyright © 2021 Elsevier B.V. All rights reserved.)
- Subjects :
- Anti-Bacterial Agents administration & dosage
Anti-Bacterial Agents isolation & purification
Fruit
Helicobacter Infections drug therapy
Helicobacter Infections microbiology
Inhibitory Concentration 50
Microbial Sensitivity Tests
Plant Extracts administration & dosage
Anti-Bacterial Agents pharmacology
Burseraceae chemistry
Helicobacter pylori drug effects
Plant Extracts pharmacology
Subjects
Details
- Language :
- English
- ISSN :
- 1872-7573
- Volume :
- 283
- Database :
- MEDLINE
- Journal :
- Journal of ethnopharmacology
- Publication Type :
- Academic Journal
- Accession number :
- 34464702
- Full Text :
- https://doi.org/10.1016/j.jep.2021.114578