PMID- 19372690 OWN - NLM STAT- MEDLINE DCOM- 20090616 LR - 20131121 IS - 1421-9859 (Electronic) IS - 0378-5866 (Linking) VI - 31 IP - 1-2 DP - 2009 TI - Dissociation between serotonin neurotoxicity and brain-derived neurotrophic factor induction following neonatal MDMA exposure in rats. PG - 90-4 LID - 10.1159/000207497 [doi] AB - Early developmental treatment of rats with 3,4-methylenedioxymethamphetamine (MDMA) was previously found to cause an abnormal pattern of forebrain serotonergic axon density in adulthood consisting of a cortical hypoinnervation and a striatal hyperinnervation. The present study tested the hypothesis that this reorganization was due to regional differences in brain-derived neurotrophic factor (BDNF) expression. Rats received MDMA (10 mg/kg, s.c., b.i.d.) on postnatal days (PD) 1-4, after which brain tissues were collected on PD 11, 30, and 67 for analysis. BDNF protein levels were found to be elevated in the occipital cortex but not in the hippocampus or striatum following MDMA administration. Serotonin transporter binding (an index of serotonergic fiber integrity) was significantly reduced in the hippocampus at PD 11 but returned to normal by PD 30, whereas the cortex exhibited a delayed reduction that was not manifested until PD 30. These results do not support the view that a region-specific enhancement in BDNF expression mediates the abnormal serotonergic reinnervation observed following neonatal MDMA exposure. CI - 2009 S. Karger AG, Basel. FAU - Piper, Brian J AU - Piper BJ AD - Neuroscience and Behavior Program, University of Massachusetts, Amherst, MA, USA. FAU - Farelli, Jeremiah D AU - Farelli JD FAU - Meyer, Jerrold S AU - Meyer JS LA - eng GR - T32 NS007490/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20090417 PL - Switzerland TA - Dev Neurosci JT - Developmental neuroscience JID - 7809375 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Hallucinogens) RN - 0 (Serotonin Plasma Membrane Transport Proteins) RN - 333DO1RDJY (Serotonin) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Aging/physiology MH - Animals MH - Animals, Newborn/*physiology MH - Brain Chemistry/drug effects MH - Brain-Derived Neurotrophic Factor/*biosynthesis MH - Cerebral Cortex/drug effects/metabolism MH - Hallucinogens/*toxicity MH - Hippocampus/drug effects/metabolism MH - Immunohistochemistry MH - N-Methyl-3,4-methylenedioxyamphetamine/*toxicity MH - Neostriatum/drug effects/metabolism MH - Nerve Fibers/metabolism MH - Neurotoxicity Syndromes/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Serotonin/*physiology MH - Serotonin Plasma Membrane Transport Proteins/metabolism MH - Up-Regulation/drug effects EDAT- 2009/04/18 09:00 MHDA- 2009/06/17 09:00 CRDT- 2009/04/18 09:00 PHST- 2008/03/13 00:00 [received] PHST- 2008/06/07 00:00 [accepted] PHST- 2009/04/18 09:00 [entrez] PHST- 2009/04/18 09:00 [pubmed] PHST- 2009/06/17 09:00 [medline] AID - 000207497 [pii] AID - 10.1159/000207497 [doi] PST - ppublish SO - Dev Neurosci. 2009;31(1-2):90-4. doi: 10.1159/000207497. Epub 2009 Apr 17.