PMID- 26152882 OWN - NLM STAT- MEDLINE DCOM- 20160617 LR - 20211203 IS - 1559-1166 (Electronic) IS - 0895-8696 (Linking) VI - 57 IP - 2 DP - 2015 Oct TI - The Impact of Chronic Early Administration of Psychostimulants on Brain Expression of BDNF and Other Neuroplasticity-Relevant Proteins. PG - 231-42 LID - 10.1007/s12031-015-0611-9 [doi] AB - Frequently, healthy individuals, children, and students are using stimulants to treat attention deficit hyperactivity disorder (ADHD)-like symptoms or to enhance cognitive capacity, attention and concentration. Methylphenidate, the most common treatment for ADHD, similarly to cocaine, blocks the dopamine reuptake, leading to increase in dopamine level in the synaptic cleft. Brain-derived neurotrophic factor (BDNF) and other neuroplasticity-relevant proteins have a major role in cellular plasticity during development and maturation of the brain. Young Sprague Dawley rats (postnatal days (PND) 14) were treated chronically with either cocaine or methylphenidate. The rats were examined behaviorally and biochemically at several time points (PND 35, 56, 70, and 90). We found age-dependent, but stimulant-independent, alterations in the mRNA expression levels of microtubule-associated protein tau, doublecortin, and synaptophysin. The PND 90 rats, treated with methylphenidate at an early age, exhibited increased BDNF protein levels in the prefrontal cortex compared to the saline-treated group. Despite the treatment effects at the biochemical level, cocaine and methylphenidate treatments at an early age had only minor effects on the behavioral parameters measured at older ages. The biochemical alterations may reflect neuroprotective or neuroplastic effects of chronic methylphenidate treatment at an early age. FAU - Simchon Tenenbaum, Yaarit AU - Simchon Tenenbaum Y AD - Department of Physiology and Pharmacology, Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, 69978, Tel-Aviv, Israel. FAU - Weizman, Abraham AU - Weizman A AD - Research Unit, Geha Mental Health Center and Felsenstein Medical Research Center, Petah-Tikva, Israel. FAU - Rehavi, Moshe AU - Rehavi M AD - Department of Physiology and Pharmacology, Sackler Faculty of Medicine, Tel-Aviv University, Ramat Aviv, 69978, Tel-Aviv, Israel. mrehavi@post.tau.ac.il. AD - The Dr. Miriam and Sheldon G. Adelson Chair and Center for the Biology of Addictive Diseases, Tel-Aviv, Israel. mrehavi@post.tau.ac.il. LA - eng PT - Journal Article DEP - 20150708 PL - United States TA - J Mol Neurosci JT - Journal of molecular neuroscience : MN JID - 9002991 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Central Nervous System Stimulants) RN - 0 (Dcx protein, rat) RN - 0 (Doublecortin Domain Proteins) RN - 0 (Doublecortin Protein) RN - 0 (Microtubule-Associated Proteins) RN - 0 (Neuropeptides) RN - 0 (Synaptophysin) RN - 0 (tau Proteins) RN - 207ZZ9QZ49 (Methylphenidate) RN - I5Y540LHVR (Cocaine) SB - IM MH - Animals MH - Brain/*drug effects/growth & development/metabolism/physiology MH - Brain-Derived Neurotrophic Factor/genetics/*metabolism MH - Central Nervous System Stimulants/administration & dosage/*pharmacology MH - Cocaine/administration & dosage/*pharmacology MH - Doublecortin Domain Proteins MH - Doublecortin Protein MH - Male MH - Methylphenidate/administration & dosage/*pharmacology MH - Microtubule-Associated Proteins/genetics/metabolism MH - Neuronal Plasticity/drug effects MH - Neuropeptides/genetics/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Synaptophysin/genetics/metabolism MH - tau Proteins/genetics/metabolism OTO - NOTNLM OT - Attention deficit hyperactivity disorder (ADHD) OT - Brain-derived neurotrophic factor (BDNF) OT - Cocaine OT - Doublecortin (DCX) OT - Methylphenidate (MPH) EDAT- 2015/07/15 06:00 MHDA- 2016/06/18 06:00 CRDT- 2015/07/09 06:00 PHST- 2015/06/25 00:00 [received] PHST- 2015/06/26 00:00 [accepted] PHST- 2015/07/09 06:00 [entrez] PHST- 2015/07/15 06:00 [pubmed] PHST- 2016/06/18 06:00 [medline] AID - 10.1007/s12031-015-0611-9 [pii] AID - 10.1007/s12031-015-0611-9 [doi] PST - ppublish SO - J Mol Neurosci. 2015 Oct;57(2):231-42. doi: 10.1007/s12031-015-0611-9. Epub 2015 Jul 8.