“…To address whether fluoxetine history impacts the aversive effects of MDMA, the present study exposed adult Sprague–Dawley rats to fluoxetine every 4th day for a total of five injections followed by access to a novel saccharin solution paired repeatedly with MDMA. Given previous work reporting sex-dependent effects of fluoxetine (Fernández-Guasti et al, 2017; Kercmar & Majdic, 2014; Leussis et al, 2021; Sramek et al, 2016; Tyagi & Walia, 2017; Zammataro et al, 2017) and MDMA (Asl et al, 2015; Liechti et al, 2001; McCann et al, 1994; Palenicek et al, 2005; Simmler et al, 2011; Verheyden et al, 2002; Walker et al, 2007) as well as sex differences in the onset/frequency of use and in the specific drugs used (see Johnston et al, 2021; SAMHSA, 2021; for a review, Riley et al, 2018), the present assessment of the effects of fluoxetine on MDMA-induced taste avoidance was done in both males and females (for discussions of sex as a biological variable, see Wetherington, 2007, 2010; for reviews, see Becker et al, 2017; Becker & Koob, 2016; Carroll & Lynch, 2016).…”