tyramine


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tyramine

 [ti´rah-mēn]
a decarboxylation product of tyrosine, which may be converted to cresol and phenol, found in decayed animal tissue, ripe cheese, and ergot. Closely related structurally to epinephrine and norepinephrine, it has a similar but weaker action.

ty·ra·mine

(tī'ră-mēn, tir'ă-),
Decarboxylated tyrosine, a sympathomimetic amine having an action in some respects resembling that of epinephrine; present in ergot, mistletoe, ripe cheese, beer, red wine, and putrefied animal matter; elevated in people with tyrosinemia type II.

tyramine

(tī′rə-mēn′)
n.
A colorless crystalline amine, C8H11NO, found in mistletoe, putrefied animal tissue, certain cheeses, and ergot and also produced synthetically, used in medicine as a sympathomimetic agent.

tyramine

[tī′rəmēn]
Etymology: Gk, tyros, cheese, amine, ammonia
an amino acid synthesized in the body from the essential amino acid tyrosine. Tyramine stimulates the release of the catecholamines epinephrine and norepinephrine. People taking monoamine oxidase inhibitors should avoid the ingestion of foods and beverages containing tyramine, particularly aged cheeses and meats, bananas, yeast-containing products, and certain alcoholic beverages, such as red wines. See also amine, catecholamine, epINEPHrine, norepinephrine, sympathomimetic, vasoconstriction.

ty·ra·mine

(tī'ră-mēn)
Decarboxylated tyrosine, a sympathomimetic amine having an action in some respects resembling that of epinephrine; present in ergot, mistletoe, ripe cheese, beer, red wine, and putrefied animal matter; elevated in people with tyrosinemia type II.

ty·ra·mine

(TYR) (tī'ră-mēn, tir'ă-)
Decarboxylated tyrosine, a sympathomimetic amine having an action in some respects resembling that of epinephrine; present in ergot, mistletoe, ripe cheese, beer, red wine, and putrefied animal matter.

tyramine (tī´rəmēn´),

n an amino acid synthesized in the body from the essential acid tyrosine. Tyramine stimulates the release of the catecholamines epinephrine and norepinephrine. It is important that people taking monoamine oxidase inhibitors avoid the ingestion of foods and beverages containing tyramine, particularly aged cheese, meats, bananas, yeast-containing products, and alcoholic beverages.

tyramine

1. a decarboxylation product of tyrosine, which may be converted to cresol and phenol, found in decayed animal tissue, ripe cheese, and ergot. Closely related structurally to epinephrine and norepinephrine, it has a similar but weaker action.
2. N-methyl-β-phenylethylamine, a toxic amine found in Acacia berlandieri and mistletoes.
References in periodicals archive ?
Dietary restrictions are not considered necessary unless a person is particularly sensitive to tyramine, or ingests a very large quantity of tyramine-containing foods.
Therapeutic applications of selective and non-selective inhibitors of monoamine oxidase A and B that do not cause significant tyramine potentiation.
He points out that wine, particularly red wine, contains chemicals called tyramines that commonly cause headache.
Tyramine is present in food items such as cheese and pickles.
Food: Foods high in tyramine that should be avoided include:
Fruit flies containing a loss-of-function mutation in the gene encoding tyramine [beta]-hydroxylase are unable to synthesize octopamine (an invertebrate analog of vertebrate's noradrenaline) and have a diminished ability to develop rapid tolerance to alcohol (Scholz et al.
This effect was also observed for tyramine [4-(2-aminoethyl)phenol], a similar monomer to HPA, seems to indicate that the electrode is not passivated, because films obtained in acid aqueous medium allows to obtain thicker films with improved conductivity properties (12).
He says eating a balanced diet and not skipping meals is more important than eliminating or adding certain foods to one's diet, but notes that foods containing a high level of tyramine (such as aged cheeses, chocolate and alcohol) should be avoided.
Some migraine sufferers also found that foods with tyramine tend to trigger their headaches.
17, from Alcaligenes species, 13 U/mg), m(1,3)-phenylenediamine, tyramine, ACh, choline (Ch), DA, 3,4-dihydroxyphenylacetic acid (DOPAC), and homovanillic acid (HVA) were purchased from Sigma Chemicals.
Monoamine oxidase inhibitors may cause severe hypertension in patients who consume foods containing tyramine.