Abstract
Two new 1,5 benzodiazepines have been evaluated acutely as anticonvulsants in baboons, Papio papio, with photosensitive epilepsy. BAU 426 (8-Chlor-6-[2-chlorphenyl]-4H-s-triazolo-[4,3-a] [1,5-benzodiazepin-5-[6-H]on) and BAU 500 (analogue of BAU 426 with [2-trifluor methylphenyl] substituted for [2-chlorphenyl]), 0.1–5.0 mg/kg, were administered i.v. to baboons with and without priming with D,l allylglycine.
BAU 426 or BAU 500, 0.1–0.2 mg/kg, produced partial or transient protection against photically induced myoclonus or epileptic responses. Complete protection, in the absence of signs of sedation or acute neurological toxicity, was seen 1–4 h after 0.5–2 mg/kg. EEG changes typical of benzodiazepines were seen for 1–3 h and clinical signs of sedation with some muscular hypotonia were evident for 1 h after either drug, 5 mg/kg.
Clinical trials are required to determine if these compounds are superior to 1,4 benzodiazepines as anticonvulsants.
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Meldrum, B.S., Horton, R.W. Anticonvulsant activity in photosensitive baboons, Papio papio, of two new 1,5 benzodiazepines. Psychopharmacology 60, 277–280 (1979). https://doi.org/10.1007/BF00426668
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DOI: https://doi.org/10.1007/BF00426668