Do saliva concentrations predict plasma unbound theophylline concentrations? A problem re-examined.
نویسندگان
چکیده
منابع مشابه
Re-evaluation of saliva for monitoring theophylline concentrations.
Variability of the mixed saliva/plasma theophylline relation was examined in seven children aged 2 to 13 years. Good correlation between plasma and saliva concentrations was found, but on the three occasions there was considerable inter- and intrapatient variability. There was no significant or consistent relation between unstimulated and stimulated saliva concentrations or between saliva conce...
متن کاملRelationship between saliva and free and total plasma theophylline concentrations in patients with chronic airflow obstruction.
Total plasma and mixed stimulated saliva theophylline concentrations (by high performance liquid chromatography) and free plasma theophylline concentrations (by equilibrium dialysis) were measured in simultaneously collected samples from 32 outpatients receiving chronic oral theophylline treatment, who had received the drug at least two hours before sampling. There was a close relationship betw...
متن کاملPlasma theophylline concentrations measured by high-pressure liquid chromatography.
We present a specific, sensitive high-pressure liquid-chromatographic assay for theophylline in plasma. Only 0.5 ml of plasma is required for each determination, and the lower limit of detection by this method is 0.1 mg/liter. Other xanthines and their metabolites do not interfere. This method is suitable for use in studying the pharmacokinetics of this drug in infants and children, from whom o...
متن کاملLong term treatment with theophylline increases malonyl dialdehyde plasma concentrations.
As theophylline is known to stimulate lipolysis and lipid mobilisation, plasma concentrations of malonyl dialdehyde were studied in asthmatic patients being treated with sustained release theophylline. Malonyl dialdehyde was assessed as malonyl dialdehyde like material (MDA-LM) by the thiobarbituric acid assay. In a kinetic study (eight patients) plasma MDA-LM concentrations were found to be si...
متن کاملFree and total plasma theophylline concentrations in chronic airflow obstruction.
It has been suggested that the variability in clinical response between individuals at any given total plasma theophylline concentration may be related to interpatient variability in theophylline plasma protein binding. We therefore measured the plasma protein binding of theophylline in plasma from 39 outpatients with chronic airflow obstruction who were receiving long term oral theophylline tr...
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ژورنال
عنوان ژورنال: British Journal of Clinical Pharmacology
سال: 1984
ISSN: 0306-5251
DOI: 10.1111/j.1365-2125.1984.tb04991.x