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Published on: January 22, 2016
Attenuated methamphetamine induced neurotoxicity by modafinil administration in mice
Mariana Raineri1, Viviana Peskin, Belén Goitia
1Instituto de Investigaciones Farmacológicas (ININFA-UBA-CONICET), Junín 956, Piso 5, C1113-Buenos Aires, Argentina.
Synapse (New York, N.Y.)
|May 19, 2011
Summary
Modafinil may protect against methamphetamine-induced neurotoxicity by preserving dopamine levels in mice. However, it did not prevent reduced locomotion or increase stereotypic behaviors when combined with methamphetamine.
Area of Science:
- Neuroscience
- Pharmacology
- Toxicology
Background:
- Methamphetamine (METH) is a highly addictive psychostimulant known to cause neurotoxicity.
- Modafinil, a wakefulness-promoting agent, has shown potential in treating psychostimulant addiction.
Purpose of the Study:
- To investigate the potential neuroprotective effects of modafinil against METH-induced toxicity in a mouse model.
- To evaluate modafinil's impact on dopamine levels, tyrosine hydroxylase (TH) immunoreactivity, and locomotor activity following METH exposure.
Main Methods:
- Mice received METH binges or single doses, with or without modafinil pretreatment.
- Evaluated striatal dopamine and metabolite content, TH immunoreactivity, and spontaneous/acute locomotor activity.
- Assessed stereotypy, including continuous sniffing, as an indicator of behavioral changes.
Main Results:
- METH binge significantly decreased striatal dopamine and TH immunoreactivity.
- Modafinil pretreatment attenuated these METH-induced neurochemical deficits but did not fully restore locomotion.
- Combined modafinil and single-dose METH reduced total distance traveled and increased stereotypic behaviors.
Conclusions:
- Modafinil demonstrates a potential protective role against acute methamphetamine striatal toxicity.
- Further research is warranted to understand modafinil's complex effects on METH-induced behavioral and neurochemical changes.
