inositol

inositol
1,2,3,4,5,6-Hexahydroxycyclohexane; a member of the vitamin B complex necessary for growth of yeast and of mice; absence from the diet causes alopecia and dermatitis in mice and “spectacle eyes” in rats. It occurs in a number of stereoisomeric forms: cis-, epi-, allo-, neo-, myo-, muco-, chiro-, and scyllo-inositols; the most abundant naturally occurring i. is myo-i. (usually meant when “i.” occurs without a prefix). SYN: antialopecia factor, inose, inosite, lipositol, mouse antialopecia factor.
- i. niacinate a peripheral vasodilator.
- i. 1,3,4,5-tetraphosphate a phosphorylated derivative of i. formed from i. 1,4,5-trisphosphate that causes Ca2+ entry into the cytosol from the extracellular medium; inactivated by hydrolysis to form i. 1,3,4-trisphosphate.
- i. 1,4,5-trisphosphate (IP3) a second messenger formed from phosphatidylinositol 4,5-bisphosphate; triggers the release of calcium ions from special vesicles of the endoplasmic reticulum; has a role in the activation of neutrophils.

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ino·si·tol in-'ō-sə-.tȯl, ī-'nō-, -.tōl n any of several crystalline stereoisomeric cyclic alcohols C6H12O6 esp MYOINOSITOL

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n.
a compound, similar to a hexose sugar, that is a constituent of some cell phospholipids. Inositol is present in many foods, in particular in the bran of cereal grain. It is sometimes classified as a vitamin but it can be synthesized by most animals and there is no evidence that it is an essential nutrient in humans.

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ino·si·tol (ĭ-noґsĭ-tol) a cyclic sugar alcohol, the fully hydroxylated derivative of cyclohexane, occurring naturally in a variety of stereoisomers, particularly the myo-isomer. Used alone, the term usually denotes this isomer.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Inositol — Général …   Wikipédia en Français

  • inositol — i*no si*tol ([i^]*n[o^]s [i^]*t[o^]l), n. [Gr. i s, ino s, strength, muscle.] (Physiol. Chem.) A white crystalline substance ({C6H12O6}) with a sweet taste, widely distributed in certain animal tissues and fluids, particularly in the muscles of… …   The Collaborative International Dictionary of English

  • inositol — ● inositol nom masculin (grec is, inos, fibre) Facteur lipotrope appartenant au groupe des vitamines B et se trouvant dans les tissus cérébraux et musculaires. inosite [inozit] n. f. ou inositol [inozitɔl] n. m. ÉTYM. 1855, Nysten; du grec is,… …   Encyclopédie Universelle

  • inositol — Isómero de la glucosa, muy abundante en las células vegetales y animales. Diccionario Mosby Medicina, Enfermería y Ciencias de la Salud, Ediciones Hancourt, S.A. 1999 …   Diccionario médico

  • inositol — [in′ō sīt΄i nō′sə tôl΄, i nō′sətōl΄, i nō′sətäl΄] n. [< Gr is (gen. inos), muscle, fiber, strength (see INION) + IT(E) + OL1] a sweet crystalline alcohol, C6H6 (OH) 6, existing in nine isomeric forms and found in both plant and animal tissues …   English World dictionary

  • Inositol — myo Inositol[1] …   Wikipedia

  • Inositol — Strukturformel myo Inosit Allgemeines Name Inosit Andere Namen Cyclohe …   Deutsch Wikipedia

  • Inositol — Estructura del inositol. Inositol o ciclohexan 1,2,3,4,5,6 hexol es un compuesto orgánico de fórmula a C6H12O6 o ( CHOH )6, un poliol del ciclohexano. Existen nueve posibles estereoisómeros, de los cuales el más común y más extendido en la… …   Wikipedia Español

  • inositol — noun Etymology: International Scientific Vocabulary, from inosite inositol, from Greek in , is sinew + International Scientific Vocabulary 2 ose + 1 ite Date: 1891 any of several crystalline stereoisomeric cyclic alcohols C6H12O6; especially… …   New Collegiate Dictionary

  • inositol — A cyclic hexahydric alcohol with 6 possible isomers. The biologically active form is myo inositol …   Dictionary of molecular biology

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