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George Hatzidimitriou

7 papers in the library · 819 citations · publishing 1993-2013

Papers

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Single oral doses of (±) 3,4-methylenedioxymethamphetamine (‘Ecstasy’) produce lasting serotonergic deficits in non-human primates: relationship to plasma drug and metabolite concentrations

The International Journal of Neuropsychopharmacology May 1, 2013 Melanie Mueller, Jie Yuan, Una D. Mccann et al.

Abstract: Repeated doses of the popular recreational drug methylenedioxymethamphetamine (MDMA, ‘Ecstasy’) are known to produce neurotoxic effects on brain serotonin (5-HT) neurons but it is widely believed that typical single oral doses of MDMA are free of neurotoxic risk. Experimental and therapeutic trials with MDMA in humans are underway. The mechanisms by which MDMA produces neurotoxic...

Pharmacokinetic profile of single and repeated oral doses of MDMA in squirrel monkeys: relationship to lasting effects on brain serotonin neurons.

Neuropsychopharmacology February 2006 Annis O. Mechan, Jie Yuan, George Hatzidimitriou et al.

A large body of data indicates that (+/-)3,4-methylenedioxymethamphetamine (MDMA, 'ecstasy') can damage brain serotonin neurons in animals. However, the relevance of these preclinical data to humans is uncertain, because doses and routes of administration used in animals have generally differed from those used by humans. Here, we examined the pharmacokinetic profile of MDMA in squirrel monkeys...

RETRACTED: Severe Dopaminergic Neurotoxicity in Primates After a Common Recreational Dose Regimen of MDMA ("Ecstasy")

Science September 27, 2002 George A. Ricaurte, Jie Yuan, George Hatzidimitriou et al. 179 citations Retracted

The prevailing view is that the popular recreational drug (±)3,4-methylenedioxymethamphetamine (MDMA, or “ecstasy”) is a selective serotonin neurotoxin in animals and possibly in humans. Nonhuman primates exposed to several sequential doses of MDMA, a regimen modeled after one used by humans, developed severe brain dopaminergic neurotoxicity, in addition to less pronounced serotonergic...

Validity of [123I]β‐CIT SPECT in detecting MDMA‐induced serotonergic neurotoxicity

Synapse September 5, 2002 Liesbeth Reneman, Jan Booij, Jan B. A. Habraken et al. 33 citations

Abstract Recent [ 123 I]β‐CIT single‐photon emission computed tomography (SPECT) studies revealed decreased serotonin transporters (SERT) density in the brain of humans with a history of MDMA (“Ecstasy”) use. However, [ 123 I]β‐CIT SPECT has until now not been validated as a method for detecting such serotonergic lesions. Therefore, the present study was undertaken. Following baseline [ 123...

DOI: 10.1002/syn.10130 (opens in new tab) Serotonergic MDMA Binding potential Neurotoxicity +4

Altered Serotonin Innervation Patterns in the Forebrain of Monkeys Treated with (±)3,4-Methylenedioxymethamphetamine Seven Years Previously: Factors Influencing Abnormal Recovery

Journal of Neuroscience June 15, 1999 George Hatzidimitriou, Una D. Mccann, George A. Ricaurte 338 citations

The recreational drug (±)3,4-methylenedioxymethamphetamine (MDMA, “Ecstasy”) is a potent and selective brain serotonin (5-HT) neurotoxin in animals and, possibly, in humans. The purpose of the present study was to determine whether brain 5-HT deficits persist in squirrel monkeys beyond the 18-month period studied previously and to identify factors that influence recovery of injured 5-HT axons....

Reorganization of ascending 5-HT axon projections in animals previously exposed to the recreational drug (+/-)3,4-methylenedioxymethamphetamine (MDMA, "ecstasy")

Journal of Neuroscience August 1, 1995 Christina Weide Fischer, George Hatzidimitriou, J Wlos et al. 269 citations

The recreational drug (+/)3,4-methylenedioxymethamphetamine (MDMA, “ecstasy”) is a methamphetamine derivative that selectively destroys central 5-HT axons and axon terminals in animals and, possibly, humans. The fate of 5-HT neurons following MDMA injury is uncertain. In particular, while it is known that central 5-HT axons can undergo regenerative sprouting after MDMA injury, it has not been...

3,4-Methylenedioxymethamphetamine, serotonin and memory.

Journal of Pharmacology and Experimental Therapeutics August 1, 1993 George A. Ricaurte, A L Markowska, G L Wenk et al.

The recreational drug (+/-)-3,4-methylenedioxymethamphetamine (MDMA, "Ecstasy") is toxic to central serotonin (5-HT) neurons, but few long-term functional consequences of MDMA neurotoxicity have been identified. Because 5-HT has been implicated in learning and memory, the present study was undertaken to examine whether MDMA, by damaging 5-HT neurons, altered mnemonic function on a long-term...

DOI: 10.1016/s0022-3565(25)38362-x (opens in new tab) Serotonin Animals Rats N-methyl-3,4-methylenedioxyamphetamine +8