Authors: Angela N Duke Donna M Platt James M Cook Shengming Huang Wenyuan Yin Bruce A Mattingly James K Rowlett
Publish Date: 2006/06/17
Volume: 187, Issue: 3, Pages: 321-330
Abstract
Adult male squirrel monkeys N=4–6 maintained under freefeeding conditions were administered with intramuscular injections of the nonselective benzodiazepines diazepam and alprazolam the α1GABAApreferring compounds zolpidem and zaleplon or the α5GABAApreferring agonist QHii066 before daily 10min periods when sucrose pellets were available In a separate experiment observable behavioral effects eg ataxia and procumbent posture were quantified after administration of alprazolam zaleplon and QHii066 To further assess the roles of GABAA receptor subtypes zolpideminduced increases in pellet consumption were reevaluated after pretreatment with nonselective antagonist flumazenil the α1GABAApreferring antagonist βcarboline3carboxylatetbutyl ester BCCT or QHii066Alprazolam diazepam zolpidem and zaleplon but not QHii066 significantly increased sucrose pellet consumption In addition all agonists decreased locomotion and environmentdirected behavior as well as engendered ataxia and procumbent posture For all compounds except QHii066 these behaviors occurred at doses similar to those that increased pellet consumption Flumazenil and BCCT but not QHii066 antagonized zolpideminduced increases in pellet consumption in a surmountable fashion
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