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Binge ethanol administration enhances the MDMA-induced long-term 5-HT neurotoxicity in rat brain.
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- المؤلفون: Izco M;Izco M; Orio L; O'Shea E; Colado MI
- المصدر:
Psychopharmacology [Psychopharmacology (Berl)] 2007 Jan; Vol. 189 (4), pp. 459-70. Date of Electronic Publication: 2006 Oct 18.
- نوع النشر :
Journal Article; Research Support, Non-U.S. Gov't
- اللغة:
English
- معلومة اضافية
- المصدر:
Publisher: Springer-Verlag Country of Publication: Germany NLM ID: 7608025 Publication Model: Print-Electronic Cited Medium: Print ISSN: 0033-3158 (Print) Linking ISSN: 00333158 NLM ISO Abbreviation: Psychopharmacology (Berl) Subsets: MEDLINE
- بيانات النشر:
Original Publication: Berlin, New York, Springer-Verlag.
- الموضوع:
- نبذة مختصرة :
Rationale: Ecstasy abuse commonly occurs in hot, overcrowded environments in combination with alcohol. Around 90% of ecstasy users take ethanol; over 70% of these users also often drink alcohol at hazardous levels.
Objectives: We wished to examine whether binge ethanol administration enhanced the long-lasting 5-HT neurotoxicity induced by 3,4-methylenedioxymethamphetamine (MDMA) in rats maintained at high ambient temperature and the role of acetaldehyde.
Materials and Methods: Rats were treated with a 4-day ethanol regimen leading to plasma ethanol levels of around 450 mg/dl. On day 5, rats were placed at 30 degrees C and administered MDMA (5 mg/kg). Rectal temperature and hydroxyl radical formation were measured immediately before and up to 6 h after MDMA. 5-HT concentration and 5-HT transporter density were determined 7 days later. A group of rats received cyanamide (50 mg/kg) on days 1 and 3 of the 4-day-ethanol inhalation.
Results: In ethanol treated rats, MDMA produced a hyperthermic response similar to that observed in controls but enhanced the loss of 5-HT concentration and 5-HT transporter density in the hippocampus. Cyanamide elevated the plasma acetaldehyde concentration fivefold to sevenfold, reduced the MDMA-induced hyperthermia and increased the neuronal damage with neurotoxicity also appearing in the cortex. MDMA increased hydroxyl radical production in the hippocampus, the effect being more marked in rats pre-exposed to ethanol.
Conclusions: Binge ethanol administration enhances the MDMA-induced long-term 5-HT neurotoxicity by a mechanism not related to changes in acute hyperthermia but probably involving hydroxyl radical formation. The magnitude of this effect is more pronounced after increasing plasma acetaldehyde levels by aldehyde dehydrogenase inhibition.
- Comments:
Comment in: Psychopharmacology (Berl). 2007 Mar;190(4):581-2. (PMID: 17235607)
Comment in: Psychopharmacology (Berl). 2007 Apr;191(2):387-8. (PMID: 17265072)
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- الرقم المعرف:
0 (Central Nervous System Depressants)
0 (Enzyme Inhibitors)
0 (Serotonin Agents)
0 (Serotonin Plasma Membrane Transport Proteins)
333DO1RDJY (Serotonin)
3352-57-6 (Hydroxyl Radical)
3K9958V90M (Ethanol)
420-04-2 (Cyanamide)
EC 1.2.1.3 (Aldehyde Dehydrogenase)
GO1N1ZPR3B (Acetaldehyde)
KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine)
- الموضوع:
Date Created: 20061019 Date Completed: 20070302 Latest Revision: 20181113
- الموضوع:
20231215
- الرقم المعرف:
10.1007/s00213-006-0602-1
- الرقم المعرف:
17047928
No Comments.