Primidone exhibits a diverse range of bioactivities, including significant inhibitory effects against various enzymes and receptors, as well as notable anticonvulsant, sedative, and antiviral properties. In enzymatic assays, it demonstrates less than 5.0% inhibition of beta-lactamase and chymotrypsin at concentrations of 100 uM and 250 uM, respectively, but shows 13.0% inhibition of malate dehydrogenase (MDH) at 400 uM. It also exhibits broad-spectrum inhibition against targets such as Tyrosyl-DNA Phosphodiesterase, DNA Polymerase Beta, Histone Lysine Methyltransferase G9a, and Cytochrome p450-cyp1a2, among others.
Additionally, Primidone shows anticonvulsant and sedative effects with a median effective dose (ED50) of 58.6 mg/kg in the subcutaneous metrazole test. It acts as an agonist at the Thyroid Stimulating Hormone Receptor and androgen receptor signaling pathways. Furthermore, the compound demonstrates high oral bioavailability in humans, with an F value of 92.0% and a logD value of 0.91, indicating favorable partitioning properties.
In antiviral assays, Primidone inhibits SARS-CoV-2-induced cytotoxicity in Caco-2 and Vero E6 cells, showing specific inhibition rates and hit scores that suggest moderate activity against the virus. It also displays inhibitory activity against the SARS-CoV-2 3CL-Pro protease.
In terms of liver toxicity, Primidone shows no significant adverse effects on hepatic functions, with a severity class index for drug-induced liver injury of 0.0. It also inhibits sodium fluorescein uptake in OATP1B3 and OATP1B1 CHO cells, suggesting potential implications in drug transport interactions.
Lastly, the compound has been found to have antifungal and antibacterial activity against various pathogens, including Candida albicans, Cryptococcus neoformans, and multiple bacterial strains such as Acinetobacter baumannii and Staphylococcus aureus MRSA.
Overall, Primidone presents a versatile pharmacological profile with potential therapeutic applications across several domains..
Note: Summary generated by AI. Data source: ChEMBL 