SB-205,384 is an anxiolytic drug. It has similar effects to benzodiazepine drugs, but is structurally distinct and so is classed as a nonbenzodiazepine anxiolytic.
SB-205,384 is a subtype selective GABAA partial agonist, which binds preferentially to the α3 subtype.[1] It has a novel mechanism of action, prolonging the duration of GABA-mediated chloride flux but without increasing the intensity of the response, and this may give it an unusual pharmacological profile,[2] with tests showing that it alters the firing of some populations of neurons while leaving others unaffected.[3] Animal studies have shown it to produce both anxiolytic and anti-aggressive effects, but with little sedation or other behavioural changes.[4][5]
References [edit]
- ^ Meadows, HJ; Kumar, CS; Pritchett, DB; Blackburn, TP; Benham, CD (1998). "SB-205384: a GABAA receptor modulator with novel mechanism of action that shows subunit selectivity". British Journal of Pharmacology 123 (6): 1253–9. doi:10.1038/sj.bjp.0701721. PMC 1565273. PMID 9559912.
- ^ Meadows, HJ; Harries, MH; Thompson, M; Benham, CD (1997). "Effect of SB-205384 on the decay of GABA-activated chloride currents in granule cells cultured from rat cerebellum". British Journal of Pharmacology 121 (7): 1334–8. doi:10.1038/sj.bjp.0701251. PMC 1564816. PMID 9257911.
- ^ Ing, T; Poulter, MO (2007). "Diversity of GABA(A) receptor synaptic currents on individual pyramidal cortical neurons". The European Journal of Neuroscience 25 (3): 723–34. doi:10.1111/j.1460-9568.2007.05331.x. PMID 17313570.
- ^ Navarro, JF; Burón, E; Martín-López, M (2006). "Anxiolytic-like activity of SB-205384 in the elevated plus-maze test in mice". Psicothema 18 (1): 100–4. PMID 17296016.
- ^ Navarro, JF; Burón, E; Martín-López, M (2008). "Effects of SB-205384, a positive modulator of alpha3-subunit-containing GABA-A receptors, on isolation-induced aggression in male mice". Psicothema 20 (1): 144–7. PMID 18206077.
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