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Related Experiment Videos

Grooming behavior induced by substance P.

T B Van Wimersma Greidanus1, C Maigret

  • 1Rudolf Magnus Institute of Pharmacology, University of Utrecht, The Netherlands.

European Journal of Pharmacology
|September 13, 1988
PubMed
Summary
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Substance P administered intracerebroventricularly causes excessive grooming in rats, including body grooming, anogenital grooming, and scratching. This grooming behavior was reduced by naloxone and haloperidol, suggesting a distinct neurochemical pathway.

Area of Science:

  • Neuroscience
  • Behavioral Pharmacology

Background:

  • Substance P is a neuropeptide implicated in various physiological processes.
  • Excessive grooming can be induced by various neurochemicals, serving as a model for studying their effects.

Purpose of the Study:

  • To investigate the effects of intracerebroventricular (i.c.v.) administration of substance P on grooming behavior in rats.
  • To characterize the pattern of substance P-induced grooming.
  • To explore the neurochemical mechanisms underlying substance P-induced grooming.

Main Methods:

  • Rats received i.c.v. injections of substance P.
  • Grooming behavior was quantified using a scoring system.
  • The effects of pretreatment with naloxone and haloperidol on substance P-induced grooming were assessed.

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Main Results:

  • Intracerebroventricular administration of substance P elicited excessive grooming in rats, characterized by body grooming, anogenital grooming, and scratching.
  • The total grooming score induced by substance P was approximately 23% of the maximal possible score.
  • Pretreatment with naloxone and haloperidol significantly suppressed substance P-induced excessive grooming.

Conclusions:

  • Substance P induces a specific pattern of excessive grooming in rats.
  • The findings suggest that substance P-induced grooming involves opioid and dopaminergic pathways.
  • The grooming pattern elicited by substance P differs from that induced by other peptides.