ArticleEuropean journal of pharmacology2007
Activators of potassium M currents have anticonvulsant actions in two rat models of encephalitis.
Article in European journal of pharmacology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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4 authors at 1 institution in 1 country.
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Abstract
Opioid systems in hippocampus regulate excitability and kappa opioids have a role in anticonvulsant protection, but their mechanisms of action are incompletely understood. We examined the ability of opioid and nonopioid agents with overlapping ionic mechanisms and actions similar to kappa opioid agonists, to block seizures in rat models of encephalitis due to Borna Disease virus and Herpes Simplex Virus Type-1. Naltrindole, a delta antagonist and thus a kappa opioid sparing agent, (10 mg/kg s.c.) blocked spontaneous and naloxone (opioid antagonist)-induced seizures in the models, but produced somatic signs similar to opioid withdrawal. Given that delta antagonists as well as kappa opioid agonists in hippocampus enhance potassium M currents (I(M)), we tested the effect of the I(M) augmenter flupirtine. Flupirtine (20 mg/kg i.p.) prevented seizures in Borna and herpes infected rats, without signs of withdrawal, hypotonia or sedation. The results support the efficacy of opioid and nonopioid drugs in modulating naloxone-induced seizures in critical illness due to viral encephalitis and by analogy, opioid withdrawal seizures.
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