Julio César Rivera-Leyva

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In vitro dissolution studies for solid oral dosage forms have recently widened the scope to a variety of special dosage forms such as suspensions. For class II drugs, like Ibuprofen, it is very important to have discriminative methods for different formulations in physiological conditions of the gastrointestinal tract, which will identify different problems(More)
4-Nitro-N-(5-nitro-1,3-thiazol-2-yl)benzamide (1), a new nitazoxanide analog, was synthesized; its chemical structure was confirmed by 1H, 13C NMR, and HRMS. In this study, we evaluated the in vitro activity of compound 1 against Giardia lamblia trophozoites, as well as its in vivo giardicidal activity in a CD-1 mouse model. A pharmacokinetic study in(More)
The low oral bioavailability of drugs can be principally attributed to their low solubility, low permeability, and low dissolution rate in the gastrointestinal tract. Considering the low lab-to-market success rate, it is highly important to evaluate these bioavailability factors in the early stages of drug discovery and development. In this work, some(More)
Stansin 6 a tetrasaccharide resin glycoside isolated from the root of Ipomoea stans was evaluated as anticonvulsant and neuroprotective in kainic acid-induced seizures of rats. Intraperitoneal injection of kainic acid (10 mg/kg) induced typical behavioral seizures such as wet dog shakes and limbic seizures, and histopathological changes in the hippocampus(More)
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