, serotonin (5-HT), 3,4-dihydroxyphenylacetic acid (DOPAC), 5-hydroxyindoleacetic acid (5-HIAA) and homovanillic acid (HVA) in brain; 3-methoxy-4-hydroxyphenylglycol, DOPAC, 5-HIAA and HVA in cerebrospinal fluid; 5-HIAA, HVA and 5-HT in plasma; and 5-HIAA and HVA in urine. ...
Determination of 2-hydroxyphenylacetic acid (2HPAA) in urine after oral and parenteral administration of coumarin by gas-liquid chromatography with flame-i... The urinary excretion of 2-hydroxyphenylacetic acid (2HPAA) was studied in human volunteers after oral and parenteral doses of coumarin. The...
This study showed that deconjugation and conversion of isoquercitrin and quercetin glucuronides to hydroxyphenylacetic acid occurs very rapidly in in vitro colonic fermentation. In contrast, rutin is deglycosylated at a slower rate, suggesting that rutin would be hydrolyzed at a slower rate than the ...
Simultaneous determination of 3,4-dihydroxyphenylacetic acid and homovanillic acid using high performance liquid chromatography–fluorescence detection and application to rat kidney microdialysate 文档格式: .pdf 文档大小: 112.1K 文档页数: 6页 顶/踩数: ...
5‐hydroxyindole‐3‐acetic acid HVA: homovanillic acid DOPAC: 3,4‐dihydroxyphenylacetic acid FMOC‐CL: 9‐fluorenylmethyloxycarbonyl chloride NM: normetanephrine MN: metanephrine DANSYL: 1‐dimethyl aminonaphthalenesulfonyl chloride PITC: phenylisothiocyanate ...
Tuomainen P,Mannisto P T.Optimization of the hydrolysis of conjugated L-Dopa, dopamine and dihydroxyphenylacetic acid in human urine for assay by high-performance liquid chromatography with electrochemical detection. European Journal . 1997Tuomainen P; Mannisto PT. Optimization of the hydrolysis o...
By using this reaction, a postcolumn fluorescence derivatization high performance liquid chromatography of the acidic metabolites of catecholamines (3,4-dihydroxymandelic acid, 3,4-dihydroxyphenylacetic acid, vanillylmandelic acid and homovanillic acid) in human urine was established. These compounds were ...
This paper describes a simple and sensitive method for measuring norepinephrine, epinephrine, dopamine, dihydroxyphenylalanine, and dihydroxyphenylacetic acid in urine and plasma. This method involves a two-stage frontal-chromatographic clean-up, followed by coupled minibore high-performance liquid chromatogr...
compounds (norepinephrine, epinephrine, dopamine, normetanephrine, metanephrine, 3-methoxytyramine, and L-DOPA), acidic compounds (3,4-dihydroxyphenylacetic acid, vanillyl-mandelic acid, and homovanillic acid), and alcoholic compound [4-hydroxy-3-methoxyphenyl)ethylene glycol)] in human urine and ...
A combined procedure based on reversed-phase liquid chromatography with electrochemical detection has been developed for the determination in the picomole range of the monoamines dopamine, norepinephrine, epinephrine and serotonin, and their major metabolites 3,4-dihydroxyphenylacetic acid, homovanillic acid...