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Moderate Prenatal Alcohol Exposure and Quantification of Social Behavior in Adult Rats
Published on: December 14, 2014
Cocaine transiently impairs maternal behavior in the rat
E M Vernotica1, C A Lisciotto, J S Rosenblatt
1Institute of Animal Behavior, Rutgers, State University of New Jersey, Newark 07102, USA. vernotica@axon.rutgers.edu
Behavioral Neuroscience
|April 1, 1996
Summary
Cocaine exposure during pregnancy impairs maternal behavior in rats only when the drug is actively circulating. Once cocaine levels drop, maternal behaviors return to normal, indicating no lasting neural changes.
Area of Science:
- Neuroscience
- Behavioral Science
- Pharmacology
Background:
- Maternal behavior is crucial for offspring survival.
- Prenatal drug exposure can impact neurodevelopment and behavior.
- The specific effects of cocaine on maternal behavior require further elucidation.
Purpose of the Study:
- To investigate whether repeated cocaine exposure during pregnancy causes lasting neural alterations in maternal behavior.
- To determine if cocaine's effects on maternal behavior are dependent on its circulating levels.
Main Methods:
- Rats received daily cocaine injections (20 or 40 mg/kg) during critical periods of pregnancy.
- Maternal behavior was assessed at different time points after cocaine administration (4 hours and 16 hours).
- Plasma cocaine levels were measured to correlate drug presence with behavioral changes.
Main Results:
- Significant deficits in maternal behavior were observed within 4 hours of cocaine injection.
- Maternal behavior normalized 16 hours after injection, coinciding with undetectable plasma cocaine levels.
- This pattern of transient impairment was consistent over 8 days of repeated exposure.
Conclusions:
- Cocaine impairs maternal behavior in rats solely during the period it is actively circulating in the bloodstream.
- There is no evidence of residual or long-term detrimental effects on maternal behavior in dams after chronic cocaine exposure, once drug levels normalize.
