Histamine H₄ Receptors in the Gastrointestinal Tract
Overview
Affiliations
Histamine is a well-established mediator involved in a variety of physiological and pathophysiological mechanisms and exerts its effect through activation of four histamine receptors (H1-H₄). The histamine H₄ receptor is the newest member of this histamine receptor family, and is expressed throughout the gastrointestinal tract as well as in the liver, pancreas and bile ducts. Functional studies using a combination of selective and non-selective H₄ receptor ligands have rapidly increased our knowledge of H₄ receptor involvement in gastrointestinal processes both under physiological conditions and in models of disease. Strong evidence points towards a role for H₄ receptors in the modulation of immune-mediated responses in gut inflammation such as in colitis, ischaemia/reperfusion injury, radiation-induced enteropathy and allergic gut reactions. In addition, data have emerged implicating H₄ receptors in gastrointestinal cancerogenesis, sensory signalling, and visceral pain as well as in gastric ulceration. These studies highlight the potential of H₄ receptor targeted therapy in the treatment of various gastrointestinal disorders such as inflammatory bowel disease, irritable bowel syndrome and cancer.
Chronic Visceral Pain: New Peripheral Mechanistic Insights and Resulting Treatments.
Ford A, Vanner S, Kashyap P, Nasser Y Gastroenterology. 2024; 166(6):976-994.
PMID: 38325759 PMC: 11102851. DOI: 10.1053/j.gastro.2024.01.045.
Alsaad A, Ansari M, Nadeem A, Attia S, Bakheet S, Alomar H Int J Mol Sci. 2023; 24(16).
PMID: 37629172 PMC: 10455358. DOI: 10.3390/ijms241612991.
Mast Cells and Basophils in IgE-Independent Anaphylaxis.
Palgan K Int J Mol Sci. 2023; 24(16).
PMID: 37628983 PMC: 10454702. DOI: 10.3390/ijms241612802.
Soares N, Bastos T, Kaelle G, de Souza R, de Oliveira S, Felix A Animals (Basel). 2023; 13(15).
PMID: 37570335 PMC: 10416873. DOI: 10.3390/ani13152527.
Inflammatory Bowel Disease: Crosstalk between Histamine, Immunity, and Disease.
Dvornikova K, Platonova O, Bystrova E Int J Mol Sci. 2023; 24(12).
PMID: 37373085 PMC: 10297875. DOI: 10.3390/ijms24129937.