carnitine

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carnitine

 [kahr´nĭ-tēn]
a derivative of betaine found in skeletal muscle and liver; it is necessary for the mitochondrial oxidation of fatty acids.

car·ni·tine

(kar'ni-tēn),
A trimethylammonium (betaine) derivative of γ-amino-β-hydroxybutyrate, formed from Nε,Nε,Nε-trimethyllysine and from γ-butyrobetaine; the l-isomer is a thyroid inhibitor found in muscle, liver, and meat extract; l-carnitine is an acyl carrier with respect to the mitochondrial membrane and thus stimulates fatty acid oxidation.
Synonym(s): BT factor, vitamin BT
[L. caro carn-, flesh + ine]

carnitine

(kär′nĭ-tēn′)
n.
A compound that functions in fatty acid metabolism by transporting fatty acids into mitochondria for energy production. It is naturally produced in the body and is present in many animal products, especially red meat. It is also sold as a dietary supplement for its purported health benefits.

carnitine

Chemistry
An essential amino acid that transports long-chain fatty acids across the inner mitochondrial membrane for breakdown to CO2 or ketone bodies; it acts as an acyl (fatty acid carrier). Carnitine is endogenous (synthesised in the liver and kidneys from lysine and methionine) or exogenous (from red meat and dairy products).

Fringe nutrition
Carnitine allegedly enhances athletic performance, prevents heart disease, controls weight and has anti-ageing properties; current data does not support these assertions.

car·ni·tine

(kahr'ni-tēn)
A trimethylammonium (betaine) derivative of gamma-amino-beta-hydroxybutyric acid, formed from NE,NE,NE -trimethyllsine and from gamma-butyrobetaine; the l-isomer is a thyroid inhibitor found in muscle, liver, and meat extracts; l-carnitine is an acyl carrier with respect to the mitochondrial membrane; it thus stimulates fatty acid oxidation.
[G. karnin, an alkali derived from meat]

car·ni·tine

(kahr'ni-tēn)
Compound found in dairy and meat that stimulates fatty acid oxidation.
[G. karnin, an alkali derived from meat]