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A Novel Hplc Method For Determination Of Phenytoin In Human Plasma, Jesse Flores, Sheril Alexander, Mariana Babayeva
A Novel Hplc Method For Determination Of Phenytoin In Human Plasma, Jesse Flores, Sheril Alexander, Mariana Babayeva
Touro College of Pharmacy (New York) Publications and Research
Aim: Aim of this research was to develop and validate a simple, efficient and reproducible high performance liquid chromatography method to measure phenytoin concentrations in human plasma
Study Design: Linearity, selectivity, sensitivity, accuracy and precision of the analytical methods were validated according to ICH guidelines.
Methodology: The method employed a Phenomenex C18 column kept at 25ºC. The mobile phase consisted of a 0.05 M potassium dihydrogen phosphate buffer solution (pH 2.8) and methanol in a ratio of 60:40, respectively. The flow rate of the mobile phase was 0.7 mL/min. Phenytoin was detected at a wavelength of 250 …
Significant Inhibition Of Protein Binding Of Phenytoin, Sheril Alexander, Jesse Flores, Henrietta Ofuluozor, Mariana Babayeva
Significant Inhibition Of Protein Binding Of Phenytoin, Sheril Alexander, Jesse Flores, Henrietta Ofuluozor, Mariana Babayeva
Touro College of Pharmacy (New York) Publications and Research
Aim: This research was aimed to assess the potential for inhibition of protein binding of phenytoin by tizoxanide in human plasma. Phenytoin was used because studies have proven to be a highly plasma protein-bound drug with a narrow therapeutic index and non-linear pharmacokinetics. Tizoxanide is another highly protein-bound active metabolite of an anti-infective prodrug nitazoxanide. Both drugs are expected to be administered together due to their therapeutic indications.
Study Design: The study was divided into two phases. Phase 1 produced a reference line of phenytoin protein binding values. Phase 2 was conducted to reveal the effect of the interactant tizoxanide …