Summary: Free tryptophan in plasma was separated by centrifugation through an Amicon Ultrafiltration membrane cone. The value obtained without control of pH was found to be lower than that obtained with control of pH by an improved method (Hijikata et al. (1981) Anal. Biochem. 118, 10-16). For determination of the total tryptophan concentration in the plasma, high performance liquid chromatogra-phy (HPLC) was better than the method of Denckla Dewey s modified by Bloxam & Warren ((1974) Anal. Biochem. 60, 621—625), s judged on the basis of sensitivity, recovery rate and coefficient of variance. The total tryptophan concentration in the plasma determined by HPLC was lower than that determined by the Bloxam & Warren method. The total t...
<p>(A) Exemplary HPLC chromatogram (lot L24579) showing 1-L-MT peak (at retention time 7.6 min) and ...
Serotonin and kynurenine are formed following metabolism of the essential amino acid tryptophan. Bot...
Concentrations of tryptophan (free and protein bound) and its metabolites in plasma of maternal vein...
In healthy subjects the administration of an amino acid mixture devoid of tryptophan causes a marked...
A new technic for the determination of tryptophan in plasma, based on the tryptophan-dimethylaminobe...
A simple, rapid and selective method using high-performance liquid chromatography with ultraviolet d...
<p>The concentration of plasma tryptophan (<a href="http://www.plosone.org/article/info:doi/10.1371/...
A simple, rapid and selective method using high-performance liquid chromatography with ultraviolet d...
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Chemistry and ...
L-TRYPTOPHAN may be used as a model endogenous molecule to study the binding characteristics of the ...
A sensitive, selective, and comprehensive method for the quantitative determination of tryptophan an...
In our previous study of 2,130 Chinese patients with coronary heart disease (CHD), we found that try...
A novel spectrophotometric method for determination of tryptophan content in pro-tein hydrolysates h...
Recently, the Ultrafiltrator has been described, in the literature, which allows the ultrafiltration...
1 The metabolism of three oral doses of L-tryptophan (50, 25 and 10 mg/kg) in healthy young males ha...
<p>(A) Exemplary HPLC chromatogram (lot L24579) showing 1-L-MT peak (at retention time 7.6 min) and ...
Serotonin and kynurenine are formed following metabolism of the essential amino acid tryptophan. Bot...
Concentrations of tryptophan (free and protein bound) and its metabolites in plasma of maternal vein...
In healthy subjects the administration of an amino acid mixture devoid of tryptophan causes a marked...
A new technic for the determination of tryptophan in plasma, based on the tryptophan-dimethylaminobe...
A simple, rapid and selective method using high-performance liquid chromatography with ultraviolet d...
<p>The concentration of plasma tryptophan (<a href="http://www.plosone.org/article/info:doi/10.1371/...
A simple, rapid and selective method using high-performance liquid chromatography with ultraviolet d...
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Chemistry and ...
L-TRYPTOPHAN may be used as a model endogenous molecule to study the binding characteristics of the ...
A sensitive, selective, and comprehensive method for the quantitative determination of tryptophan an...
In our previous study of 2,130 Chinese patients with coronary heart disease (CHD), we found that try...
A novel spectrophotometric method for determination of tryptophan content in pro-tein hydrolysates h...
Recently, the Ultrafiltrator has been described, in the literature, which allows the ultrafiltration...
1 The metabolism of three oral doses of L-tryptophan (50, 25 and 10 mg/kg) in healthy young males ha...
<p>(A) Exemplary HPLC chromatogram (lot L24579) showing 1-L-MT peak (at retention time 7.6 min) and ...
Serotonin and kynurenine are formed following metabolism of the essential amino acid tryptophan. Bot...
Concentrations of tryptophan (free and protein bound) and its metabolites in plasma of maternal vein...