In vitro screening of selected Iranian medicinal plants against Helicobacter pylori

Zahra Hosseininejad, Sodaif Darvish Moghadam, Farzaneh Ebrahimi, Mohammad Abdollahi, Mohammad Javad Zahedi, Mahdieh Nazari, Mehdi Hayatbakhsh, Saeed Adeli, Fariba Sharififar

Abstract


Helicobacter pylori infection is virtually always associated with duodenal, peptic and gastric ulcers and promotion of gastrointestinal cancer. Some of medicinal plants traditionally have been used for gastrointestinal problems. In the present work, the inhibitory effect of the essential oils of some medicinal plants was evaluated against clinical isolate of H. pylori. H. pylori was isolated from gastric biopsy of patients with gastric complications. Agar diffusion and agar dilution methods were used for evaluating the anti-H. pylori effect and minimum inhibitory concentration (MIC) determination of tested plants. The results were reported as mean±SD and differences
considered significant at a P value <0.05. The essential oils of Cinnamomum zeylanicum and Zataria multiflora demonstrated potent anti-H. pylori effect with inhibition zone diameter of 24.8 mm and 23.6 mm, respectively. The MIC of both two essential oils was estimated to be 0.3 μl/ml. The essential oils of Heracleum persicum, Syzygium aromaticum and Citrus aurantium exhibited more than 88% inhibition in concentration of 0.3 μl/ml. The essential oils of C. zeylanicum and Z. multiflora might be good candidate for treatment of gastrointestinal disorders caused by H. pylori and it is needed to do further study about these essential oils.
Key words: Cinnamomum zeylanicum, Essential oil, Helicobacter pylori, MIC, Zataria multiflora

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DOI: http://dx.doi.org/10.22377/ijgp.v5i4.214

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