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Esquivel, G.; Fernández-Torre, O.; Schruers, KRJ; Wijnhoven, LLW; Griez, EJL
Journal of psychopharmacology (Oxford), 11/2009, Letnik: 23, Številka: 8Journal Article
Several reports have linked, among other aspects, the role of an opioid system in respiratory physiology with underlying mechanisms of panic attacks. The involvement of the opioid system in experimental panic is to be further probed. This study aimed to determine whether opioid blockade would increase panic-related symptomatology on provocation with 35% CO2 inhaled by healthy volunteers. Participants in a double-blind, randomised crossover design orally received either 50 mg of naltrexone or placebo. Most subjects undertook a double inhalation of 35% CO2 one hour after pre-medication, and a separate group did so after five hours. The reactivity to CO2 and the symptoms elicited by naltrexone alone were measured. Among other findings, naltrexone pre-medication alone elicited significant increments in panic-related symptoms. Responses to CO2 were not significantly different between conditions in either group. These preliminary findings suggest that exposure to opioid blockade alone can potentially elicit symptoms that resemble panic, however, without modifying the response to experimental panic provocation with 35% CO2.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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