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Pathway Description
Cimetidine H2 Anti-Histamine Action Pathway
Homo sapiens
Drug Action Pathway
Cimetidine is an H2 receptor antagonist drug that is mainly used to treat peptic ulcers and heartburns. It works by acting as a competitive inhibitor and blocks the action of histamine on Histamine H2 receptors. This ultimately reduces gastric acid secretion in the stomach lumen by parietal cells that is caused by histamines interaction with the H2 receptor. This receptors activation causes downstream cascading signals that target the transporters pumping out hydrogen ions which leads to the secretion of acid in the stomach lumen.
References
Cimetidine H2 Anti-Histamine Pathway References
Lu X, Li C, Fleisher D: Cimetidine sulfoxidation in small intestinal microsomes. Drug Metab Dispos. 1998 Sep;26(9):940-2.
Pubmed: 9733675
Takahashi HK, Watanabe T, Yokoyama A, Iwagaki H, Yoshino T, Tanaka N, Nishibori M: Cimetidine induces interleukin-18 production through H2-agonist activity in monocytes. Mol Pharmacol. 2006 Aug;70(2):450-3. doi: 10.1124/mol.106.025890. Epub 2006 May 24.
Pubmed: 16723495
Hersey, S. J., & Sachs, G. (1995). Gastric acid secretion. Physiological reviews, 75(1), 155-189.
Wishart DS, Feunang YD, Guo AC, Lo EJ, Marcu A, Grant JR, Sajed T, Johnson D, Li C, Sayeeda Z, Assempour N, Iynkkaran I, Liu Y, Maciejewski A, Gale N, Wilson A, Chin L, Cummings R, Le D, Pon A, Knox C, Wilson M: DrugBank 5.0: a major update to the DrugBank database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D1074-D1082. doi: 10.1093/nar/gkx1037.
Pubmed: 29126136
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