In Silico and In Vitro Investigation of Anti Helicobacter Activity of Selected Phytochemicals

Abstract

Introduction: Helicobacter pylori is Gram-negative helical bacteria that inhibit stomach mucosal lining and establish infection. Urease enzyme was confirmed to be pivotal target in which its suppression will prompt bacteria treatment and eradication. Methods: Series of naturally bioactive compounds were selected based on ethnobotanical and molecular modeling techniques with potential urease inhibitory effect. The selected phytochemical compounds were in-silico and in-vitro assayed against urease enzyme, minimal inhibitory concentrations (MIC) and a synergistic effect was studied and cultured specifically for H. pylori . Results: Terpineol was considered as the most active compound with an IC 50 of 1.443 μg/ml ( R 2 = 0.9374). The synergistic effect of terpineol and metronidazole indicated a possible additive effect (fractional inhibitory concentration result is 0.78) with improvement of MIC results for both terpineol and metronidazole. Conclusion: This study suggests that terpineol is best to be considered as a lead compound for H. pylori infection treatment and could be a potent inhibitor when combined with metronidazole targeting urease enzyme.

IN SILICO INHIBITION OF UREASE AND CagA ENZYMES AS TARGETS AGAINST HELICOBACTER PYLORI: AN OVERVIEW ON CAPES 2022 DATABASE

“…The phytochemical approach for inhibiting the urease enzyme was used by Tawalbeh et al (2022) and Quy et al (2022) in their studies, while Elkousy et al (2022) employed the same approach to inhibit both urease and CagA, as outlined below. Elkousy et al (2022) examined the effectiveness of mandarin leaves and marjoram herb essential oils against H. pylori in comparison to clarithromycin using an in vitro method, and discovered that the combined effects of the oils were similar to those of clarithromycin.…”