Simple radioligand binding assay for the determination of urinary scopolamine.
J Pharm Sci
; 73(4): 561-3, 1984 Apr.
Article
em En
| MEDLINE
| ID: mdl-6726646
ABSTRACT
A sensitive radioligand binding assay is described for the determination of scopolamine in human urine. As a measure for the drug concentration, the quantitative displacement of scopolamine of tritiated quinuclidinyl benzylate from rat brain receptors was used. The assay is sensitive to concentrations as low as 1.2 ng/mL, surpassed only by GC-MS techniques. It can be performed easily and quickly and does not include extraction procedures. Scopoline and scopine , possible metabolites of scopolamine, do not interfere with the assay. After transdermal administration of scopolamine, 34% of the drug is found in the urine. Of the total scopolamine excreted, 79% is conjugated to glucuronic and/or sulfuric acid and 21% is excreted in the unbound form.
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Base de dados:
MEDLINE
Assunto principal:
Escopolamina
Limite:
Animals
Idioma:
En
Ano de publicação:
1984
Tipo de documento:
Article