Background And Objective: Post-stroke epilepsy represents an important clinical challenge as it often requires both treatment with direct oral anticoagulants (DOACs) and antiseizure medications (ASMs). Levetiracetam (LEV), an ASM not known to induce metabolizing enzymes, has been suggested as a safer alternative to enzyme-inducing (EI)-ASMs in patients treated with DOACs; however, current clinical guidelines suggest caution when LEV is used with DOACs because of possible P-glycoprotein induction and competition (based on preclinical studies). We investigated whether LEV affects apixaban and rivaroxaban concentrations compared with two control groups: (a) patients treated with EI-ASMs and (b) patients not treated with any ASM.
View Article and Find Full Text PDFThe aim of this study was to investigate the comparative antiseizure activity of the -enantiomers of ,-fenfluramine and ,-norfenfluramine and to evaluate the relationship between their concentration in plasma and brain and anticonvulsant activity. ,-Fenfluramine, ,-norfenfluramine and their individual enantiomers were evaluated in the mouse maximal electroshock seizure (MES) test. ,-Fenfluramine, ,-norfenfluramine and their individual -enantiomers were also assessed in the DBA/2 mouse audiogenic seizure model.
View Article and Find Full Text PDFThe effect of fenfluramine and norfenfluramine enantiomers in rodent seizure models and their correlation with the pharmacokinetics of d- and l-fenfluramine in rats have been reported recently. To complement these findings, we investigated the pharmacokinetics of d- and l- norfenfluramine in rat plasma and brain. Sprague-Dawley rats were injected intraperitoneally with 20 mg/kg and 1 mg/kg l- norfenfluramine.
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