Determination of kynurenic acid in rat cerebrospinal fluid by HPLC with fluorescence detection.
Biomed Chromatogr
; 30(1): 62-7, 2016 Jan.
Article
em En
| MEDLINE
| ID: mdl-25963282
ABSTRACT
A sensitive HPLC method using fluorescence detection was developed to determine kynurenic acid (KYNA) level in rat cerebrospinal fluid (CSF). The method development was accomplished by screening different columns, optimizing zinc acetate concentration and determining the optimal HPLC flow rate. This method allowed direct injection of the CSF samples onto an Xselect C18 column and KYNA levels were measured fluorometrically by forming a fluorescent complex with zinc acetate that was delivered post-column. The limit of quantitation was 0.2 n m with 30 µL injection, corresponding to 6 fmol (signal-to-noise ratio = 10). The improved sensitivity enabled the measurement of KYNA in naive and drug-treated rat CSF.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cromatografia Líquida de Alta Pressão
/
Fluorometria
/
Ácido Cinurênico
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
Idioma:
En
Revista:
Biomed Chromatogr
Ano de publicação:
2016
Tipo de documento:
Article