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        SB 205384 slows the decay of GABA-activated chloride currents in granule cells cultured from rat cerebellum

        Author
        Meadows, H.J.
        Harries, M.
        Thompson, M.
        Benham, C.D.
        Attention
        2299/3495
        Abstract
        4-Amino-7-hydroxy-2-methyl-5,6,7,8,-tetrahydrobenzo[b]thieno[2,3-b]pyridine-3-carboxylic acid, but-2-ynyl ester (SB-205384) and other γ-aminobutyric acidA (GABAA) receptor modulators were tested for their effects on GABA-activated chloride currents in rat cerebellar granule cells by use of the whole-cell patch clamp technique. The major effect of SB-205384 on GABAA-activated current was an increase in the half-life of decay of the response once the agonist had been removed. This is in contrast to many GABAA receptor modulators that have previously been shown to potentiate GABA-activated currents. This profile could be explained if SB-205384 stabilizes the channel in open and desensitized states so that channel closing is dramatically slowed. Such a modulatory profile may produce a novel behavioural profile in vivo.
        Publication date
        1997
        Published in
        British Journal of Pharmacology
        Published version
        https://doi.org/10.1038/sj.bjp.0701251
        Other links
        http://hdl.handle.net/2299/3495
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