PMID- 26415786 OWN - NLM STAT- MEDLINE DCOM- 20160622 LR - 20191113 IS - 1971-3274 (Electronic) IS - 0393-5264 (Print) IS - 0393-5264 (Linking) VI - 30 IP - 2 DP - 2015 Apr-Jun TI - Sex differences in MDMA-induced toxicity in Sprague-Dawley rats. PG - 131-7 AB - Recent evidence demonstrates that female subjects show exaggerated responses to 3,4-methylenedioxymethamphetamine (MDMA) compared with males. The aim of our study was to evaluate sex differences and the role of endogenous gonadal hormones on the effects of MDMA. Fifty-six intact and gonadectomized male and female Sprague-Dawley rats were randomly assigned to either MDMA (5 mg/kg) or saline treatment. Learning and memory were assessed using the Morris water maze (MWM). The expression of Bax and Bcl-2 in the hippocampus was detected by Western blotting. Behavioral analysis showed that MDMA led to memory impairment in both male and female rats. The female rats showed more sensitivity to impairment than the males, as assessed using all the memory parameters in the MWM. Ovariectomy attenuated the MDMA-induced memory impairment. By contrast, orchiectomized rats showed more impairment than MDMA-treated intact male rats. Bcl-2 and Bax were down-regulated and up-regulated in MDMA-treated male and female rats, respectively. MDMA treatment in the orchiectomized rats led to upregulation of Bax and down-regulation of Bcl-2. Ovariectomy attenuated the MDMA-induced up-regulation of Bax and caused more expression of Bcl-2 compared with what was observed in the MDMA-treated intact female rats. In summary, female rats showed exaggerated responses to the effects of MDMA and this may be explained by endogenous gonadal hormones. FAU - Soleimani Asl, Sara AU - Soleimani Asl S FAU - Mehdizadeh, Mehdi AU - Mehdizadeh M FAU - Hamedi Shahraki, Soudabeh AU - Hamedi Shahraki S FAU - Artimani, Tayebeh AU - Artimani T FAU - Joghataei, Mohammad Taghi AU - Joghataei MT LA - eng PT - Journal Article PL - Italy TA - Funct Neurol JT - Functional neurology JID - 8707746 RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 0 (bcl-2-Associated X Protein) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animals MH - Castration MH - Female MH - Hippocampus/metabolism MH - Learning/*drug effects MH - Male MH - Maze Learning/drug effects MH - Memory/*drug effects MH - N-Methyl-3,4-methylenedioxyamphetamine/*toxicity MH - Proto-Oncogene Proteins c-bcl-2/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - *Sex Characteristics MH - bcl-2-Associated X Protein/metabolism PMC - PMC4610761 EDAT- 2015/09/30 06:00 MHDA- 2016/06/23 06:00 PMCR- 2015/09/29 CRDT- 2015/09/30 06:00 PHST- 2015/09/30 06:00 [entrez] PHST- 2015/09/30 06:00 [pubmed] PHST- 2016/06/23 06:00 [medline] PHST- 2015/09/29 00:00 [pmc-release] AID - 7140 [pii] AID - 131-137 [pii] AID - 10.11138/fneur/2015.30.2.131 [doi] PST - ppublish SO - Funct Neurol. 2015 Apr-Jun;30(2):131-7. doi: 10.11138/fneur/2015.30.2.131.