mCPP-induced hypophagia in rats is unaffected by the profile of dietary unsaturated fatty acids.
The n-3 and n-6 polyunsaturated fatty acids (PUFAs) have been shown to modify central serotonergic parameters relevant to ingestive behavior. Evidence suggests an association between the 5-HT(2C) receptor and fat intake. The present research sought to examine the role of the 5-HT(2C) receptor subtype on food intake when diets with different fatty acid compositions are consumed. The effects of 1-(3-chlorophenyl)piperazine (mCPP) on consumption of both low-fat (Experiment 1) and high-fat diets (Experiment 2) differing in their predominant PUFA profiles were compared in rats. Regardless of the PUFA profile, mCPP induced hypophagia within each experiment. Although the present results lend further support to a large body of evidence demonstrating the ability of mCPP to reduce food intake, they do not support the idea that the essential fatty acid composition of the diet can differentially modulate mCPP-induced hypophagia.
Rice
H B
HB
Nutrition Department/Graduate Program in Nutrition, College of Health and Human Development, The Pennsylvania State University, 126 Henderson Building South, University Park 16802, USA.
Corwin
R L
RL
D000818:Animals; D001835:Body Weight / Q000187:drug effects; D004032:Diet; D004041:Dietary Fats / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D002149:Energy Intake / Q000187:drug effects; D015525:Fatty Acids, Omega-3 / Q000494:pharmacology; D005231:Fatty Acids, Unsaturated / Q000494:pharmacology*; D005247:Feeding Behavior / Q000187:drug effects*; D008297:Male; D010879:Piperazines / Q000494:pharmacology*; D051381:Rats; D017207:Rats, Sprague-Dawley; D044405:Receptor, Serotonin, 5-HT2C; D011985:Receptors, Serotonin / Q000187:drug effects; D017366:Serotonin Receptor Agonists / Q000494:pharmacology*
D004041:Dietary Fats; D015525:Fatty Acids, Omega-3; D005231:Fatty Acids, Unsaturated; D010879:Piperazines; D044405:Receptor, Serotonin, 5-HT2C; D011985:Receptors, Serotonin; D017366:Serotonin Receptor Agonists; C015068:1-(3-chlorophenyl)piperazine