Accession Number : ADA442567
Title : Pharmacokinetic Studies of Intramuscular Midazolam in Guinea Pigs Challenged With Soman
Descriptive Note : Open literature
Corporate Author : ARMY MEDICAL RESEARCH INST OF CHEMICAL DEFENSE ABERDEEN PROVING GROUND MD
Personal Author(s) : Capacio, Benedict R. ; Byers, C. E. ; Merk, K. A. ; Smith, J. R. ; McDonough, J. H.
Report Date : 2004
Pagination or Media Count : 18
Abstract : Studies have demonstrated that benzodiazepine compounds are effective at antagonizing seizure activity produced by the organophosphate (OP) cholinesterase inhibitor soman. In this present study we have investigated the pharmacokinetics of midazolam and its associated effects on electroencephalographic (EEG) activity following intramuscular (im) injection to soman-exposed guinea pigs (Crl:(HA)BR). Prior to experiments, the animals were surgically implanted with EEG leads to monitor seizure activity. For the study, animals were administered the following pretreatment/OP/treatment regimen. Pyridostigmine bromide (0.026 mg/kg, im) was given 30 min prior to soman (56 mug/kg,, 2 x LD50; subcutaneously, sc), followed in one minute by atropine sulfate (2 mg/kg, im) and pralidoxime chloride (25 mg/kg, im). All animals receiving this regimen developed seizure activity. Midazolam 0.8 mg/kg, im, was administered 5 min after onset of seizure activity. Based on EEG data, animals were categorized as either seizure-terminated or seizure not-terminated at 30 min following anticonvulsant administration.
Descriptors : *GD AGENT , *ANTICONVULSANTS , REPRINTS , PHARMACOKINETICS , PYRIDOSTIGMINE BROMIDE , GUINEA PIGS , EPILEPSY , ATROPINE , ELECTROENCEPHALOGRAPHY , ORGANOPHOSPHATES , CHOLINESTERASE INHIBITORS
Subject Categories : PHARMACOLOGY
CHEMICAL, BIOLOGICAL AND RADIOLOGICAL WARFARE
Distribution Statement : APPROVED FOR PUBLIC RELEASE