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Related Experiment Videos

Behavioral teratogenicity of methamphetamine.

D H Cho1, H M Lyu, H B Lee

  • 1Department of Toxicology, National Institute of Safety Research, Seoul, Korea.

The Journal of Toxicological Sciences
|February 1, 1991
PubMed
Summary

Prenatal methamphetamine exposure in rats caused developmental delays and behavioral changes in offspring. Male rats showed reduced motor activity but unaffected mating, suggesting behavioral teratogenicity.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Toxicology

Background:

  • Methamphetamine (MAPT) is a stimulant with known risks during pregnancy.
  • Understanding the developmental and behavioral effects of prenatal MAPT exposure is crucial for public health.

Purpose of the Study:

  • To investigate the teratogenic and behavioral effects of prenatal methamphetamine exposure in Wistar rats.
  • To assess the impact of MAPT on maternal weight gain, offspring growth, development, and behavior.

Main Methods:

  • Pregnant Wistar rats received daily subcutaneous methamphetamine (1.0–4.5 mg/kg) from gestational days 7–20.
  • Caffeine (90 mg/kg/day) served as a positive control for teratogenic effects.
  • Offspring (F1) were evaluated for physical development, functional reflexes, motor activity, and conditioned avoidance responses.

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Main Results:

  • Maternal weight gain was suppressed at MAPT doses >2.0 mg/kg.
  • Prenatal MAPT exposure led to decreased growth rate and delayed development in some offspring.
  • Male offspring exhibited reduced spontaneous motor activity and enhanced conditioned avoidance responses.
  • Mating performance in male offspring was not significantly affected.

Conclusions:

  • Prenatal methamphetamine exposure can induce behavioral teratogenicity in rats.
  • MAPT affects maternal physiology and offspring neurodevelopment and behavior.
  • Further research is warranted to understand the long-term implications of prenatal MAPT exposure.