TY - JOUR
T1 - Treatment with modafinil and escitalopram, alone and in combination, on cocaine-induced effects
T2 - A randomized, double blind, placebo-controlled human laboratory study
AU - Verrico, Christopher D.
AU - Haile, Colin N.
AU - Mahoney, James J.
AU - Thompson-Lake, Daisy G.Y.
AU - Newton, Thomas F.
AU - Ii, Richard De La Garza
PY - 2014/8/1
Y1 - 2014/8/1
N2 - Background: Concurrent administration of dopamine and serotonin reuptake inhibitors reduces cocaine self-administration in monkeys. Consonant with this, clinical trials assessing modafinil and selective serotonin reuptake inhibitors alone show some efficacy as potential pharmacotherapies for cocaine dependence. We hypothesized that combining modafinil with escitalopram would attenuate the euphoric effects of cocaine to a greater degree than modafinil alone. Methods: In a randomized, double blind, parallel groups design participants received either placebo (0. mg/day; n= 16), modafinil (200. mg/day; n= 16), escitalopram (20. mg/day; n= 17), or modafinil. +. escitalopram (200. +. 20. mg/day; n= 15) for 5 days. On day 5, during separate sessions participants received an intravenous sample of cocaine (0 or 20. mg; randomized) and five $1 bills. Participants rated the subjective effects of the infusions and subsequently made choices to either return $1 and receive another infusion or keep $1 and receive no infusion. Results: Compared to saline, cocaine (20. mg) significantly (p≤. 0.008) increased most ratings, including "good effects", "stimulated", and "high". Relative to placebo, modafinil significantly (p≤. 0.007) attenuated subject-rated increases of "any drug effect", "high", "good effects", and "stimulated" produced by cocaine. Compared to saline, participants chose cocaine infusions significantly more; however, no treatment significantly reduced choices for cocaine infusions. Escitalopram did not enhance the efficacy of modafinil to reduce any measure. Conclusions: Modafinil attenuated many positive subjective effects produced by cocaine however, escitalopram combined with modafinil did not enhance the efficacy of modafinil to reduce cocaine effects.
AB - Background: Concurrent administration of dopamine and serotonin reuptake inhibitors reduces cocaine self-administration in monkeys. Consonant with this, clinical trials assessing modafinil and selective serotonin reuptake inhibitors alone show some efficacy as potential pharmacotherapies for cocaine dependence. We hypothesized that combining modafinil with escitalopram would attenuate the euphoric effects of cocaine to a greater degree than modafinil alone. Methods: In a randomized, double blind, parallel groups design participants received either placebo (0. mg/day; n= 16), modafinil (200. mg/day; n= 16), escitalopram (20. mg/day; n= 17), or modafinil. +. escitalopram (200. +. 20. mg/day; n= 15) for 5 days. On day 5, during separate sessions participants received an intravenous sample of cocaine (0 or 20. mg; randomized) and five $1 bills. Participants rated the subjective effects of the infusions and subsequently made choices to either return $1 and receive another infusion or keep $1 and receive no infusion. Results: Compared to saline, cocaine (20. mg) significantly (p≤. 0.008) increased most ratings, including "good effects", "stimulated", and "high". Relative to placebo, modafinil significantly (p≤. 0.007) attenuated subject-rated increases of "any drug effect", "high", "good effects", and "stimulated" produced by cocaine. Compared to saline, participants chose cocaine infusions significantly more; however, no treatment significantly reduced choices for cocaine infusions. Escitalopram did not enhance the efficacy of modafinil to reduce any measure. Conclusions: Modafinil attenuated many positive subjective effects produced by cocaine however, escitalopram combined with modafinil did not enhance the efficacy of modafinil to reduce cocaine effects.
KW - Cocaine
KW - Escitalopram
KW - Modafinil
KW - Subjective effects
UR - http://www.scopus.com/inward/record.url?scp=84903174970&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84903174970&partnerID=8YFLogxK
U2 - 10.1016/j.drugalcdep.2014.05.008
DO - 10.1016/j.drugalcdep.2014.05.008
M3 - Article
C2 - 24928479
AN - SCOPUS:84903174970
SN - 0376-8716
VL - 141
SP - 72
EP - 78
JO - Drug and alcohol dependence
JF - Drug and alcohol dependence
ER -