Anti-inflammatory Effect of Cinnamaldehyde in Helicobacter pylori Induced Gastric Inflammation

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  • Muhammad Jibran Sualeh
    Department of Gastroenterology and Hematology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
  • Zaidi Syed Faisal
    Department of Gastroenterology and Hematology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama Department of Biological and BiomedicalSciences, Faculty of Health Sciences, Aga Khan University Department of Basic Medical Sciences, College of Medicine, King Saud bin Abdulaziz University of Health Sciences
  • Shaharyar Saeeda
    Department of Biological and BiomedicalSciences, Faculty of Health Sciences, Aga Khan University
  • Refaat Alaa
    Division of Pathogenic Biochemistry, Institute of Natural Medicine, University of Toyama
  • Usmanghani Khan
    Department of Basic Clinical Sciences, Faculty of Eastern Medicine, Hamdard University
  • Saiki Ikuo
    Division of Pathogenic Biochemistry, Institute of Natural Medicine, University of Toyama
  • Sugiyama Toshiro
    Department of Gastroenterology and Hematology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama

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タイトル別名
  • Anti-inflammatory Effect of Cinnamaldehyde in <i>Helicobacter pylori</i> Induced Gastric Inflammation

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Cinnamomum cassia is widely employed for gastrointestinal complaints such as dyspepsia, flatulence, diarrhea, and vomiting. Studies report cinnamaldehyde (CM) as a major active constituent of cinnamon. The aim of this study was to evaluate the anti-inflammatory mechanism of CM on Helicobacter (H.) pylori-infected gastric epithelial cells in order to validate cinnamon traditional use in gastrointestinal (GI)-related disorders. AGS/MKN-45 cells and H. pylori (193C) were employed for co-culture experiments. Anti-H. pylori cytotoxic and anti-adhesion activity of CM were determined. Enzyme linked immunosorbent assay, real time polymerase chain reaction analysis and immunoblotting were used to measure the effect on interleukin-8 (IL-8) secretion/expression. The effect on activation of nuclear factor kappa B (NF-κB) was determined by immunoblot analysis. The non-cytotoxic CM (≤125 µM) was also non-bactericidal at the given time, suggesting the effect in H. pylori/cell co-culture system was not due to alteration in H. pylori viability or the toxicity to the cells. Also, CM did not show any anti-adhesion effect against H. pylori/cell co-culture. However, pre-incubation of the cells with CM significantly inhibited the IL-8 secretion/expression from H. pylori-infected cells (p<0.01). In addition, CM suppressed H. pylori-induced NF-κB activation and prevented degradation of inhibitor (I)-κB This study provides evidence that the anti-inflammatory effect of C. cassia on H. pylori-infected gastric cells is due to blockage of the NF-κB pathway by cinnamaldehyde. This agent can be considered as a potential candidate for in vivo and clinical studies against various H. pylori related gastric pathogenic processes.

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