About: L-Histidine     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : http://linked.opendata.cz/ontology/drugbank/Drug, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type
http://linked.open...gbank/description
  • An essential amino acid that is required for the production of histamine. [PubChem] (en)
http://linked.open...gy/drugbank/group
  • approved (en)
  • nutraceutical (en)
http://linked.open...ugbank/indication
  • The actions of supplemental L-histidine are entirely unclear. It may have some immunomodulatory as well as antioxidant activity. L-histidine may be indicated for use in some with rheumatoid arthritis. It is not indicated for treatment of anemia or uremia or for lowering serum cholesterol. (en)
sameAs
Title
  • L-Histidine (en)
adms:identifier
http://linked.open...mechanismOfAction
  • Since the actions of supplemental L-histidine are unclear, any postulated mechanism is entirely speculative. However, some facts are known about L-histidine and some of its metabolites, such as histamine and trans-urocanic acid, which suggest that supplemental L-histidine may one day be shown to have immunomodulatory and/or antioxidant activities. Low free histidine has been found in the serum of some rheumatoid arthritis patients. Serum concentrations of other amino acids have been found to be normal in these patients. L-histidine is an excellent chelating agent for such metals as copper, iron and zinc. Copper and iron participate in a reaction (Fenton reaction) that generates potent reactive oxygen species that could be destructive to tissues, including joints. <br/>L-histidine is the obligate precursor of histamine, which is produced via the decarboxylation of the amino acid. In experimental animals, tissue histamine levels increase as the amount of dietary L-histidine increases. It is likely that this would be the case in humans as well. Histamine is known to possess immunomodulatory and antioxidant activity. Suppressor T cells have H2 receptors, and histamine activates them. Promotion of suppressor T cell activity could be beneficial in rheumatoid arthritis. Further, histamine has been shown to down-regulate the production of reactive oxygen species in phagocytic cells, such as monocytes, by binding to the H2 receptors on these cells. Decreased reactive oxygen species production by phagocytes could play antioxidant, anti-inflammatory and immunomodulatory roles in such diseases as rheumatoid arthritis. <br/>This latter mechanism is the rationale for the use of histamine itself in several clinical trials studying histamine for the treatment of certain types of cancer and viral diseases. In these trials, down-regulation by histamine of reactive oxygen species formation appears to inhibit the suppression of natural killer (NK) cells and cytotoxic T lymphocytes, allowing these cells to be more effective in attacking cancer cells and virally infected cells. (en)
http://linked.open...drugbank/packager
http://linked.open.../drugbank/synonym
  • L-Histidine (en)
  • (S)-4-(2-Amino-2-carboxyethyl)imidazole (en)
  • (S)-a-Amino-1H-imidazole-4-propanoic acid (en)
  • (S)-alpha-Amino-1H-imidazole-4-propionic acid (en)
  • Histidine (en)
  • L-(-)-Histidine (en)
  • H (en)
  • (S)-alpha-amino-1H-Imidazole-4-propanoic acid (en)
  • (S)-α-amino-1H-Imidazole-4-propanoic acid (en)
  • His (en)
  • L-(−)-histidine (en)
  • L-Histidin (en)
http://linked.open...drugbank/toxicity
  • ORL-RAT LD<sub>50</sub> > 15000 mg/kg, IPR-RAT LD<sub>50</sub> > 8000 mg/kg, ORL-MUS LD<sub>50</sub> > 15000 mg/kg, IVN-MUS LD<sub>50</sub> > 2000 mg/kg; Mild gastrointestinal side effects. (en)
http://linked.open...ynthesisReference
  • Kazumi Araki, Tetsuro Kuga, "Process for producing L-histidine by fermentation." U.S. Patent US4495283, issued April, 1975. (en)
http://linked.open...y/mesh/hasConcept
foaf:page
http://linked.open...ugbank/IUPAC-Name
http://linked.open...gy/drugbank/InChI
http://linked.open...Molecular-Formula
http://linked.open.../Molecular-Weight
http://linked.open...noisotopic-Weight
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http://linked.open.../Water-Solubility
http://linked.open...ogy/drugbank/logP
http://linked.open...ogy/drugbank/logS
http://linked.open...logy/drugbank/pKa
http://linked.open...nd-Acceptor-Count
http://linked.open...-Bond-Donor-Count
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http://linked.open...urface-Area--PSA-
http://linked.open...nk/Polarizability
http://linked.open...bank/Refractivity
http://linked.open...atable-Bond-Count
http://linked.open...ugbank/absorption
  • Absorbed from the small intestine via an active transport mechanism requiring the presence of sodium. (en)
http://linked.open.../affectedOrganism
  • Humans and other mammals (en)
http://linked.open...casRegistryNumber
  • 71-00-1 (en)
http://linked.open...drugbank/category
  • (en)
http://linked.open...gbank/containedIn
http://linked.open...k/Bioavailability
http://linked.open...bank/Ghose-Filter
http://linked.open...nk/MDDR-Like-Rule
http://linked.open...ank/Melting-Point
http://linked.open...k/Number-of-Rings
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http://linked.open...bank/Rule-of-Five
http://linked.open...tional-IUPAC-Name
http://linked.open...strongest-acidic-
http://linked.open...-strongest-basic-
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