Literature DB >> 11339280

Improved method for the measurement of large neutral amino acids in biological matrices.

R Bongiovanni1, B K Yamamoto, G E Jaskiw.   

Abstract

A high-performance liquid chromatographic method for measuring neutral amino acids in rat sera, brain tissues, and perfusates was developed by using o-phthalaldehyde sulfite as a pre-column derivatization reagent. With the present method, it was possible to separate the neutral amino acids within a single run in 25 min, while the acidic amino acids were eluted near or at the solvent front. The recovery was above 88.8% with a relative standard deviation (RSD) below 4.2%. The within- and between-day assay reproducibility for the determination of rat serum amino acids showed RSDs below 1.35 and 7.61%, respectively. In the present study, the neutral amino acids were assayed with high sensitivity, accuracy and good reproducibility in a relatively short time and on a small sample size.

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Year:  2001        PMID: 11339280     DOI: 10.1016/s0378-4347(00)00629-0

Source DB:  PubMed          Journal:  J Chromatogr B Biomed Sci Appl        ISSN: 1387-2273


  7 in total

1.  L-tyrosine contributes to (+)-3,4-methylenedioxymethamphetamine-induced serotonin depletions.

Authors:  Joseph M Breier; Michael G Bankson; Bryan K Yamamoto
Journal:  J Neurosci       Date:  2006-01-04       Impact factor: 6.167

2.  The chronic ingestion of diets containing different proteins produces marked variations in brain tryptophan levels and serotonin synthesis in the rat.

Authors:  SuJean Choi; Briana DiSilvio; Madelyn H Fernstrom; John D Fernstrom
Journal:  Neurochem Res       Date:  2011-01-05       Impact factor: 3.996

3.  Acute lithium administration selectively lowers tyrosine levels in serum and brain.

Authors:  Hewlet G McFarlane; John Steele; Keenan Vinion; Rodolfo Bongiovanni; Manda Double; George E Jaskiw
Journal:  Brain Res       Date:  2011-08-27       Impact factor: 3.252

4.  High sensitivity HPLC method for analysis of in vivo extracellular GABA using optimized fluorescence parameters for o-phthalaldehyde (OPA)/sulfite derivatives.

Authors:  Shannon L Zandy; James M Doherty; Nathan D Wibisono; Rueben A Gonzales
Journal:  J Chromatogr B Analyt Technol Biomed Life Sci       Date:  2017-04-03       Impact factor: 3.205

5.  In rats chronically treated with clozapine, tyrosine depletion attenuates the clozapine-induced in vivo increase in prefrontal cortex dopamine and norepinephrine levels.

Authors:  George E Jaskiw; Bobbi Kirkbride; Rodolfo Bongiovanni
Journal:  Psychopharmacology (Berl)       Date:  2006-03-16       Impact factor: 4.530

6.  Glutamate permeability at the blood-brain barrier in insulinopenic and insulin-resistant rats.

Authors:  Richard A Hawkins; Ashwini Mokashi; Mary R Dejoseph; Juan R Viña; John D Fernstrom
Journal:  Metabolism       Date:  2009-09-29       Impact factor: 8.694

7.  Brain tyrosine depletion attenuates haloperidol-induced striatal dopamine release in vivo and augments haloperidol-induced catalepsy in the rat.

Authors:  George E Jaskiw; Rodolfo Bongiovanni
Journal:  Psychopharmacology (Berl)       Date:  2003-10-28       Impact factor: 4.530

  7 in total

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