Carnitine transport in rat heart slices: I. The action of thiol reagents on the acetylcarnitine/carnitine exchange. 1985

L Sartorelli, and M Ciman, and N Siliprandi

Rat heart slices show a permeability barrier that can be crossed by carnitine but not by sucrose and inulin. The integrity of thiol groups of heart cell membrane is essential for the uptake of carnitine. N-ethylmaleimide inhibits the transport into heart slices which is insensitive to Mersalyl. On the contrary both N-ethylmaleimide and Mersalyl inhibit acetyl carnitine/carnitine exchange. The amount of thiol groups titrated by the above reagents are related to the extent of exchange inhibition.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008634 Mersalyl A toxic thiol mercury salt formerly used as a diuretic. It inhibits various biochemical functions, especially in mitochondria, and is used to study those functions. Mercuramide,Mercusal,Mersalin,Mersalyl Acid,Salyrgan,Acid, Mersalyl
D009206 Myocardium The muscle tissue of the HEART. It is composed of striated, involuntary muscle cells (MYOCYTES, CARDIAC) connected to form the contractile pump to generate blood flow. Muscle, Cardiac,Muscle, Heart,Cardiac Muscle,Myocardia,Cardiac Muscles,Heart Muscle,Heart Muscles,Muscles, Cardiac,Muscles, Heart
D009579 Nitrobenzoates Benzoic acid or benzoic acid esters substituted with one or more nitro groups. Nitrobenzoic Acids,Acids, Nitrobenzoic
D011919 Rats, Inbred Strains Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding. August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D002331 Carnitine A constituent of STRIATED MUSCLE and LIVER. It is an amino acid derivative and an essential cofactor for fatty acid metabolism. Bicarnesine,L-Carnitine,Levocarnitine,Vitamin BT,L Carnitine
D002333 Carnitine Acyltransferases Acyltransferases in the inner mitochondrial membrane that catalyze the reversible transfer of acyl groups from acyl-CoA to L-carnitine and thereby mediate the transport of activated fatty acids through that membrane. EC 2.3.1. Acylcarnitine Translocase,Carnitine Translocase,Carnitine-Acetylcarnitine Translocase,Carnitine-Acylcarnitine Translocase,Acyltransferases, Carnitine,Carnitine Acetylcarnitine Translocase,Carnitine Acylcarnitine Translocase,Translocase, Acylcarnitine,Translocase, Carnitine,Translocase, Carnitine-Acetylcarnitine,Translocase, Carnitine-Acylcarnitine
D004228 Dithionitrobenzoic Acid A standard reagent for the determination of reactive sulfhydryl groups by absorbance measurements. It is used primarily for the determination of sulfhydryl and disulfide groups in proteins. The color produced is due to the formation of a thio anion, 3-carboxyl-4-nitrothiophenolate. 5,5'-Dithiobis(2-nitrobenzoic Acid),DTNB,Ellman's Reagent,5,5'-Dithiobis(nitrobenzoate),Acid, Dithionitrobenzoic,Ellman Reagent,Ellmans Reagent,Reagent, Ellman's
D005033 Ethylmaleimide A sulfhydryl reagent that is widely used in experimental biochemical studies. N-Ethylmaleimide,N Ethylmaleimide
D000108 Acetylcarnitine An acetic acid ester of CARNITINE that facilitates movement of ACETYL COA into the matrices of mammalian MITOCHONDRIA during the oxidation of FATTY ACIDS. Acetyl Carnitine,Medosan,Acetyl-L-Carnitine,Acetylcarnitine, (R)-Isomer,Alcar,Branigen,Levocarnitine Acetyl,Acetyl L Carnitine,Carnitine, Acetyl

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