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Endothelin-C-terminal hexapeptide increases grooming in mice
J Scherrer1, J E Morley, J F Flood
1Geriatric Research, Education and Clinical Center, St. Louis VA Medical Center, MO 63106.
Pharmacology, Biochemistry, and Behavior
|August 1, 1994
Summary
Endothelin-C-terminal hexapeptide (ET[16-21]) was found to increase grooming behavior in a dose-dependent manner. This peptide-induced grooming was inhibited by stress-related peptides, alpha-helical CRF and neuropeptide Y.
Area of Science:
- Neuroscience
- Behavioral Science
- Endocrinology
Background:
- Grooming behavior is recognized as a physiological response to stress.
- Various stress-related peptides are known to influence grooming patterns.
Purpose of the Study:
- To investigate the effect of endothelin-C-terminal hexapeptide (ET[16-21]) on grooming behavior.
- To determine if ET[16-21] affects other behaviors like eating or locomotion.
- To examine the modulatory effects of alpha-helical CRF and neuropeptide Y on ET[16-21]-induced grooming.
Main Methods:
- Administration of ET[16-21] at varying doses to assess its impact on grooming.
- Observation of eating and locomotor behaviors following ET[16-21] administration.
- Co-administration of alpha-helical CRF or neuropeptide Y with ET[16-21] to evaluate inhibitory effects.
Main Results:
- ET[16-21] significantly increased grooming behavior, with maximal effect observed at 0.75 microgram.
- ET[16-21] did not produce significant alterations in eating or locomotor activities.
- Both alpha-helical CRF (10 micrograms) and neuropeptide Y (1 microgram) effectively inhibited the grooming response induced by ET[16-21].
Conclusions:
- The endothelin-C-terminal hexapeptide (ET[16-21]) acts as a potent modulator of grooming behavior.
- The results suggest a complex interplay between endothelin peptides and other stress-related neurochemical systems in regulating grooming.