PMID- 17084036 OWN - NLM STAT- MEDLINE DCOM- 20070315 LR - 20210218 IS - 0306-4522 (Print) IS - 0306-4522 (Linking) VI - 144 IP - 1 DP - 2007 Jan 5 TI - The effect of amphetamine analogs on cleaved microtubule-associated protein-tau formation in the rat brain. PG - 223-31 AB - The present study quantified the cleaved form of the microtubule-associated protein tau (cleaved MAP-tau, C-tau), a previously demonstrated marker of CNS toxicity, following the administration of monoamine-depleting regimens of the psychostimulant drugs amphetamine (AMPH), methamphetamine (METH), +/-3,4-methylenedioxymethamphetamine (MDMA), or para-methoxyamphetamine (PMA) in an attempt to further characterize psychostimulant-induced toxicity. A dopamine (DA)-depleting regimen of AMPH produced an increase in C-tau immunoreactivity in the striatum, while a DA- and serotonin (5-HT)-depleting regimen of METH produced an increase in the number of C-tau immunoreactive cells in the striatum and CA2/CA3 and dentate gyrus regions of the hippocampus. MDMA and PMA, two psychostimulant drugs that produce selective 5-HT depletion in the striatum, had no effect on C-tau immunoreactivity in the striatum or hippocampus. Furthermore, 5,7-dihydroxytryptamine (5,7-DHT), an established 5-HT selective neurotoxin, did not produce an increase in C-tau immunoreactivity. Dual fluorescent immunocytochemistry with antibodies to glial fibrillary acidic protein (GFAP) and C-tau indicated that C-tau immunoreactivity was present in astrocytes, not neurons, suggesting that increased C-tau may be an alternative indicator of reactive gliosis. The present results are consistent with previous findings that the DA-depleting psychostimulants AMPH and METH produce reactive gliosis whereas the 5-HT-depleting drugs MDMA and PMA, as well as the known 5-HT selective neurotoxin 5,7-DHT, do not produce an appreciable glial response. FAU - Straiko, M M W AU - Straiko MM AD - Neuroscience Graduate Program, University of Cincinnati, Cincinnati, OH 45267, USA. FAU - Coolen, L M AU - Coolen LM FAU - Zemlan, F P AU - Zemlan FP FAU - Gudelsky, G A AU - Gudelsky GA LA - eng GR - R01 DA007427/DA/NIDA NIH HHS/United States GR - DA 07427/DA/NIDA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20061102 PL - United States TA - Neuroscience JT - Neuroscience JID - 7605074 RN - 0 (Amphetamines) RN - 0 (Glial Fibrillary Acidic Protein) RN - 0 (Microtubule-Associated Proteins) RN - 0 (Serotonin Agents) RN - 0 (tau Proteins) RN - 31363-74-3 (5,7-Dihydroxytryptamine) RN - 333DO1RDJY (Serotonin) RN - 44RAL3456C (Methamphetamine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - OVB8F8P39Q (4-methoxyamphetamine) RN - VTD58H1Z2X (Dopamine) SB - IM MH - 5,7-Dihydroxytryptamine/pharmacology MH - Amphetamines/*pharmacology MH - Animals MH - Brain Chemistry/*drug effects MH - Data Interpretation, Statistical MH - Dopamine/metabolism MH - Glial Fibrillary Acidic Protein/biosynthesis/metabolism MH - Immunohistochemistry MH - Male MH - Methamphetamine/pharmacology MH - Microtubule-Associated Proteins/*biosynthesis MH - N-Methyl-3,4-methylenedioxyamphetamine/pharmacology MH - Rats MH - Rats, Sprague-Dawley MH - Serotonin/metabolism MH - Serotonin Agents/pharmacology MH - tau Proteins/*biosynthesis PMC - PMC1817812 MID - NIHMS14879 EDAT- 2006/11/07 09:00 MHDA- 2007/03/16 09:00 PMCR- 2008/01/31 CRDT- 2006/11/07 09:00 PHST- 2006/03/30 00:00 [received] PHST- 2006/08/26 00:00 [revised] PHST- 2006/08/29 00:00 [accepted] PHST- 2006/11/07 09:00 [pubmed] PHST- 2007/03/16 09:00 [medline] PHST- 2006/11/07 09:00 [entrez] PHST- 2008/01/31 00:00 [pmc-release] AID - S0306-4522(06)01177-8 [pii] AID - 10.1016/j.neuroscience.2006.08.073 [doi] PST - ppublish SO - Neuroscience. 2007 Jan 5;144(1):223-31. doi: 10.1016/j.neuroscience.2006.08.073. Epub 2006 Nov 2.