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Diamine oxidase (DAO), also known "amine oxidase, copper-containing, 1" (AOC1), formerly called histaminase, [1] is an enzyme (EC 1.4.3.22) involved in the metabolism, oxidation, and inactivation of histamine and other polyamines such as putrescine or spermidine.
Amine oxidase (copper-containing) (AOC) (EC 1.4.3.21 and EC 1.4.3.22; formerly EC 1.4.3.6) is a family of amine oxidase enzymes which includes both primary-amine oxidase and diamine oxidase; these enzymes catalyze the oxidation of a wide range of biogenic amines including many neurotransmitters, histamine and xenobiotic amines.
D-amino acid oxidase (DAAO; also OXDA or DAMOX) is an enzyme with the function on a molecular level to oxidize D-amino acids to the corresponding α-keto acids, producing ammonia and hydrogen peroxide. This results in a number of physiological effects in various systems, most notably the brain.
“Diamine oxidase is the primary enzyme that assists in breaking down dietary histamine within our digestive tract,” explained Dr. Cristina Matthewman, PhD, Team Innovation Leader at Life Extension. “Our formula delivers a novel more sustainable plant-derived diamine oxidase from pea sprouts, with the same capacity to break down dietary ...
The primary cause of histamine intolerance is considered by several authors [5] [19] to be insufficient activity or reduced levels of the enzyme diamine oxidase (DAO), which normally metabolizes histamine in the gut; these scholars suspect the factors that may contribute to histamine include endogenous overproduction of histamine due to ...
In mammals, HNMT operates alongside diamine oxidase (DAO) as the only two enzymes responsible for histamine metabolism; however, what sets HNMT apart is its unique presence within the central nervous system (CNS), where it governs histaminergic neurotransmission, that is a process where histamine acts as a messenger molecule between the neurons ...