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  2. Eosinophilia–myalgia syndrome - Wikipedia

    en.wikipedia.org/wiki/Eosinophilia–myalgia...

    Rheumatology. Eosinophilia–myalgia syndrome is a rare, sometimes fatal neurological condition linked to the ingestion of the dietary supplement L-tryptophan. [1][2] The risk of developing EMS increases with larger doses of tryptophan and increasing age. [3] Some research suggests that certain genetic polymorphisms may be related to the ...

  3. Tryptophan - Wikipedia

    en.wikipedia.org/wiki/Tryptophan

    Tryptophan (symbol Trp or W) [3] is an α- amino acid that is used in the biosynthesis of proteins. Tryptophan contains an α -amino group, an α- carboxylic acid group, and a side chain indole, making it a polar molecule with a non-polar aromatic beta carbon substituent.

  4. 5-Hydroxytryptophan - Wikipedia

    en.wikipedia.org/wiki/5-Hydroxytryptophan

    5-HTP is produced from the amino acid tryptophan through the action of the enzyme tryptophan hydroxylase. Tryptophan hydroxylase is one of the biopterin-dependent aromatic amino acid hydroxylases. Production of 5-HTP is the rate-limiting step in 5-HT (serotonin) synthesis. 5-HTP is normally rapidly converted to 5-HT by amino acid decarboxylase ...

  5. Hypertryptophanemia - Wikipedia

    en.wikipedia.org/wiki/Hypertryptophanemia

    Endocrinology. Hypertryptophanemia is a rare autosomal recessive [2] metabolic disorder that results in a massive buildup of the amino acid tryptophan in the blood, with associated symptoms and tryptophanuria (-uria denotes 'in the urine '). [3][4] Elevated levels of tryptophan are also seen in Hartnup disease, [5] a disorder of amino acid ...

  6. Serotonin syndrome - Wikipedia

    en.wikipedia.org/wiki/Serotonin_syndrome

    In humans the effects of excess serotonin were first noted in 1960 in patients receiving an MAOI and tryptophan. [54] The syndrome is caused by increased serotonin in the CNS. [6] It was originally suspected that agonism of 5-HT 1A receptors in central grey nuclei and the medulla oblongata was responsible for the development of the syndrome. [55]

  7. Indole alkaloid - Wikipedia

    en.wikipedia.org/wiki/Indole_alkaloid

    Structural formula of indole. Indole alkaloids are a class of alkaloids containing a structural moiety of indole; many indole alkaloids also include isoprene groups and are thus called terpene indole or secologanin tryptamine alkaloids. Containing more than 4100 known different compounds, it is one of the largest classes of alkaloids. [1]

  8. L-DOPA - Wikipedia

    en.wikipedia.org/wiki/L-DOPA

    The side effects of l -DOPA may include: Hypertension, especially if the dosage is too high. Arrhythmias, although these are uncommon. Nausea, which is often reduced by taking the drug with food, although protein reduces drug absorption. l -DOPA is an amino acid, so protein competitively inhibits l -DOPA absorption.

  9. Kynurenine - Wikipedia

    en.wikipedia.org/wiki/Kynurenine

    Infobox references. l-Kynurenine is a metabolite of the amino acid l - tryptophan used in the production of niacin. Kynurenine is synthesized by the enzyme tryptophan dioxygenase, which is made primarily but not exclusively in the liver, and indoleamine 2,3-dioxygenase, which is made in many tissues in response to immune activation. [1]

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