PMID- 25337384 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20141022 LR - 20211021 IS - 2008-126X (Print) IS - 2228-7442 (Electronic) IS - 2008-126X (Linking) VI - 5 IP - 3 DP - 2014 Summer TI - Acute Effects of Ecstasy on Memory Are more Extensive than Chronic Effects. PG - 225-30 AB - INTRODUCTION: Exposure to 3, 4- methylenedioxymethamphetamine (MDMA) could lead to serotonergic system toxicity in the brain. This system is responsible for learning and memory functions. Studies show that MDMA causes memory impairment dose-dependently and acutely. The present study was designed to evaluate the chronic and acute effects of MDMD on spatial memory and acquisition of passive avoidance. METHODS: Adult male Wistar rats (200-250 g) were given single or multiple injections of MDMA (10 mg/kg, IP). Using passive avoidance and Morris Water Maze (MWM) tasks, learning and spatial memory functions were assessed. The data were analyzed by SPSS 16 software and one- way analysis of variance (ANOVA) test. RESULTS: Our results showed that there were significant differences in latency to enter the dark compartment (STL) between sham and MDMA- treated groups. Acute group significantly showed more STL in comparison with chronic group. Furthermore, MDMA groups spent more time in dark compartment (TDS) than the sham group. Administration of single dose of MDMA significantly caused an increase in TDS compared with the chronic group. In the MWM, MDMA treatment significantly increased the traveled distance and escaped latency compared to the sham group. Like to passive avoidance task, percentage of time spent in the target quadrant in MDMA- treated animals impaired in MWM compared with sham group. DISCUSSION: These data suggest that MDMA treatment impairs learning and memory functions that are more extensive in acute- treated rats. FAU - Shariati, Mohamad Bakhtiar Hesam AU - Shariati MB AD - Research Center for Behavioral Disorders and Substance Abuse, Hamadan University of Medical Sciences, Hamadan, Iran. FAU - Sohrabi, Maryam AU - Sohrabi M AD - Anatomy Department, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran. FAU - Shahidi, Siamak AU - Shahidi S AD - Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran. FAU - Nikkhah, Ali AU - Nikkhah A AD - Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran. FAU - Mirzaei, Fatemeh AU - Mirzaei F AD - Anatomy Department, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran. FAU - Medizadeh, Mehdi AU - Medizadeh M AD - Cellular & Molecular Research Center, Faculty of Advanced Technology in Medicne, Department of Anatomical Sciences, Iran University of Medical Sciences, Tehran, Iran. FAU - Asl, Sara Soleimani AU - Asl SS AD - Research Center for Behavioral Disorders and Substance Abuse, Hamadan University of Medical Sciences, Hamadan, Iran ; Anatomy Department, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran. LA - eng PT - Journal Article PL - Iran TA - Basic Clin Neurosci JT - Basic and clinical neuroscience JID - 101575211 PMC - PMC4202547 OTO - NOTNLM OT - Ecstasy OT - Learning OT - Spatial Memory EDAT- 2014/10/23 06:00 MHDA- 2014/10/23 06:01 PMCR- 2014/06/01 CRDT- 2014/10/23 06:00 PHST- 2013/10/04 00:00 [received] PHST- 2013/11/25 00:00 [revised] PHST- 2013/12/13 00:00 [accepted] PHST- 2014/10/23 06:00 [entrez] PHST- 2014/10/23 06:00 [pubmed] PHST- 2014/10/23 06:01 [medline] PHST- 2014/06/01 00:00 [pmc-release] AID - BCN-5-225 [pii] PST - ppublish SO - Basic Clin Neurosci. 2014 Summer;5(3):225-30.