Histamine metabolism.
نویسنده
چکیده
Histamine is formed by decarboxylation of the amino acid L-histidine, a process catalyzed by histidine decarboxylase (HDC) and can be inactivated either by methylation of the imidazole ring, catalyzed by histamine N-methyltransferase (HMT) or by oxidative deamination of the primary amino group, catalyzed by diamine oxidase (DAO). This chapter describes the enzymatic reactions and the properties of the enzymes involved, including their structures, their cellular localization, their genes, expression and regulation, and the determination of their enzymatic activities. It also addresses cellular histamine transport, storage and release. Further, it discusses alterations in histamine metabolism associated with human diseases and how this might affect histamine receptor signaling.
منابع مشابه
In Silico Modeling of Liver Metabolism in a Human Disease Reveals a Key Enzyme for Histidine and Histamine Homeostasis
Primary hyperoxaluria type I (PH1) is an autosomal-recessive inborn error of liver metabolism caused by alanine:glyoxylate aminotransferase (AGT) deficiency. In silico modeling of liver metabolism in PH1 recapitulated accumulation of known biomarkers as well as alteration of histidine and histamine levels, which we confirmed in vitro, in vivo, and in PH1 patients. AGT-deficient mice showed decr...
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ورودعنوان ژورنال:
- International archives of allergy and applied immunology
دوره 6 4-6 شماره
صفحات -
تاریخ انتشار 1955