serotonin


serotonin
A vasoconstrictor, liberated by blood platelets, that inhibits gastric secretion and stimulates smooth muscle; present in relatively high concentrations in some areas of the central nervous system (hypothalamus, basal ganglia), and occurring in many peripheral tissues and cells and in carcinoid tumors. SYN: 5-hydroxytryptamine, enteramine, thrombocytin, thrombotonin. [sero- + G. tonos, tone, tension, + -in]

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se·ro·to·nin .sir-ə-'tō-nən, .ser- n a phenolic amine neurotransmitter C10H12N2O that is a powerful vasoconstrictor and is found esp. in the brain, blood serum, and gastric mucous membrane of mammals called also 5-HT, 5-hydroxytryptamine

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n.
a compound widely distributed in the tissues, particularly in the blood platelets, intestinal wall, and central nervous system. Serotonin is thought to play a role in inflammation similar to that of histamine and it is involved in the genesis of a migrainous headache. Drugs that act like serotonin are used in the treatment of migraine (see 5HT1 agonist). It also acts as a neurotransmitter, and its levels in the brain are believed to have an important influence on mood. Drugs that prolong its effects are used as antidepressants (see SSRI).

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sero·to·nin (ser″o-toґnin) a monoamine vasoconstrictor, synthesized in the intestinal chromaffin cells or in central or peripheral neurons and found in high concentrations in many body tissues, including the intestinal mucosa, pineal body, and central nervous system. Produced enzymatically from tryptophan by hydroxylation and decarboxylation, it has many physiologic properties, such as inhibition of gastric secretion, stimulation of smooth muscle, serving as a central neurotransmitter, and being a precursor of melatonin. It is also found in animal species from coelenterates to vertebrates, in bacteria, and in many plants. Called also 5-hydroxytryptamine.

Medical dictionary. 2011.

Look at other dictionaries:

  • serotonin — serotonin. См. серотонин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Serotonin — Serotonin, 5 Hydroxytryptamin, im Tier und Pflanzenreich weit verbreitetes, durch Hydroxylierung und anschließende Decarboxylierung aus Tryptophan entstehendes biogenes Amin; Gewebshormon; wirkt im Zentralnervensystem als Transmitter… …   Deutsch wörterbuch der biologie

  • serotonin — neurotransmitting chemical, 1948, coined from sero , comb. form of SERUM (Cf. serum) (q.v.) + ton(ic) + chemical suffix IN (Cf. in) (2) …   Etymology dictionary

  • serotonin — serotònīn m <G serotonína> DEFINICIJA biol. kem. prirodni sastojak krvi i različitih tkiva, osobito moždanog; povećava tonus i peristaltiku tankog crijeva i suženje kapilara ETIMOLOGIJA v. serum + grč. tónos: napetost + in …   Hrvatski jezični portal

  • serotonin — [sir΄ə tō′nin, ser΄ə tō′nin] n. [ SERO + TON(IC) + IN1] a complex amine, C10H12N2O, found in blood, the brain, etc. or produced synthetically: it constricts the blood vessels and contracts smooth muscle tissue, and is important both as a… …   English World dictionary

  • Serotonin — Strukturformel Allgemeines Name Serotonin Andere Namen …   Deutsch Wikipedia

  • Serotonin — chembox ImageFileL1 = Serotonin (5 HT).svg ImageSizeL1 = 145px ImageFileR1 = Serotonin 3D vdW.png ImageSizeR1 = 145px IUPACName = 5 Hydroxytryptamine or 3 (2 aminoethyl) 1 H indol 5 ol OtherNames = Section1 = Chembox Identifiers CASNo = 50 67 9… …   Wikipedia

  • serotonin — /ser euh toh nin, sear /, n. Biochem. a neurotransmitter, derived from tryptophan, that is involved in sleep, depression, memory, and other neurological processes. [1945 50; SERO + TONE + IN2] * * * Chemical (5 hydroxytryptamine, or 5 HT) derived …   Universalium

  • Serotonin — Se|ro|to|nin [Kurzw. aus ↑ Serum, ↑ Tonus u. ↑ in (3)], das; s; Syn.: 5 Hydroxytryptamin (5 HT), (systematisch:) 3 (2 Aminoethyl)indol 5 ol: in Tier u. Pflanzenreich weit verbreitetes biogenes Amin. S. wirkt im menschlichen Organismus als… …   Universal-Lexikon

  • serotonin — 5 hydroxytryptamine; n. a compound widely distributed in the tissues, particularly in the blood platelets, intestinal wall, and central nervous system. Serotonin is thought to play a role in inflammation similar to that of histamine and it is… …   The new mediacal dictionary


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