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A preliminary behavioral investigation of PMMA, the 4-methoxy analog of methamphetamine
R A Glennon1, A E Ismaiel, B Martin
1Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond 23298.
Abstract:
The controlled-substance analog N-monomethyl-1-(4-methoxyphenyl)-2-aminopropane (PMMA) may be viewed as being either the 4-methoxy analog of methamphetamine or the N-methyl analog of 1-(4-methoxyphenyl)-2-aminopropane (PMA). Because of its abuse potential, PMMA was examined with regard to (a) its stimulus properties in rats trained to discriminate either 1.0 mg/kg of (+)amphetamine or (+/-)DOM from saline, (b) its toxicity (isolated and aggregated) in mice relative to (+/-)PMA, and (c) its locomotor stimulant activity in mice relative to (+/-)amphetamine, (+/-)methamphetamine, and (+/-)PMA. Racemic PMMA produced neither DOM-like nor, unlike PMA, amphetamine-like stimulus effects. There was no significant difference between the 24-hr isolated (LD50 = 63 mg/kg) and aggregated (LD50 = 53 mg/kg) toxicity, and PMMA did not produce significant locomotor stimulation at doses of up to 30 mg/kg. The present results suggest that while PMMA may produce central effects it does not appear to behave as a simple amphetamine-like agent.
Insights
N-monomethyl-1-(4-methoxyphenyl)-2-aminopropane (PMMA) does not exhibit amphetamine-like stimulus or locomotor effects in mice. This controlled substance analog shows similar toxicity whether isolated or aggregated, suggesting unique central effects.
Area of Science:
- Pharmacology
- Neuroscience
- Toxicology
Background:
- N-monomethyl-1-(4-methoxyphenyl)-2-aminopropane (PMMA) is a controlled substance analog.
- PMMA can be considered a derivative of methamphetamine or 1-(4-methoxyphenyl)-2-aminopropane (PMA).
- Due to its abuse potential, PMMA's pharmacological and toxicological profile requires thorough investigation.
Purpose of the Study:
- To evaluate the stimulus properties of PMMA in rats.
- To assess the acute toxicity of PMMA in mice, comparing isolated and aggregated forms.
- To determine the locomotor stimulant activity of PMMA in mice relative to known stimulants.
Main Methods:
- Rats were trained to discriminate (+)amphetamine or (+/-)DOM from saline.
- Toxicity studies in mice used isolated and aggregated PMMA, determining LD50 values.
- Locomotor activity was measured in mice following administration of PMMA, amphetamine, methamphetamine, and PMA.
Main Results:
- Racemic PMMA did not produce DOM-like or amphetamine-like stimulus effects.
- No significant difference in 24-hr LD50 was observed between isolated (63 mg/kg) and aggregated (53 mg/kg) PMMA.
- PMMA did not cause significant locomotor stimulation in mice at doses up to 30 mg/kg.
Conclusions:
- PMMA does not function as a simple amphetamine-like agent.
- The findings suggest PMMA may possess central effects distinct from typical amphetamine-like compounds.
- PMMA's abuse potential warrants further research into its specific neuropharmacological mechanisms.