A new method utilizing high-performance liquid chromatography with electrochemical detection for the determination of unconjugated 3-methoxy-4-hydroxyphenylglycol, a major metabolite of norepinephrine, in human plasma is described. A novel internal standard, 3-ethoxy-4-hydroxyphenylglycol, was used
Measurement of 3-methoxy-4-hydroxyphenylacetic acid (HVA) in plasma by high-performance liquid chromatography with electrochemical detector (HPLC-EC)
โ Scribed by J.I. Javaid; T.S. Liu; J.W. Maas; J.M. Davis
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 410 KB
- Volume
- 135
- Category
- Article
- ISSN
- 0003-2697
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โฆ Synopsis
A simple and sensitive high-performance liquid chromatography method with electrochemical detector is described for the determination of free 3-methoxy-4-hydroxyphenylacetic acid (HVA) in human plasma. The method does not involve any extraction, is specific and reproducible, and has the potential to measure serotonin (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) simultaneously. The plasma concentration of free HVA in eight normal, healthy adult volunteers was 10.9 +/- 4.6 (mean +/- SD). In a preliminary study, in one schizophrenic patient the plasma HVA increased twofold after neuroleptic treatment.
๐ SIMILAR VOLUMES
A sensitive method has been developed for the determination of a new antihypertensive agent, (2H,4H)-2-(2-hydroxyphenyl)-3-(3mercaptopropionyl)-4-thiazolidinecarboxylic acid (I), in human blood. Because the drug is unstable in biological fluids, it was immediately derivatized by treating the freshly