The effect of dexamethasone-21-acetate on meal size, meal frequency and macronutrient self-selection in rats

Patricia Sue Grigson, Deanne F. Johnson, George H. Collier, Charles F. Flaherty

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

In Experiment 1, the measurement of 24-hour food intake in two rats showed that treatment with dexamethasone-21-acetate (DEX) (0.5 mg/kg IP) produced a decrease in body weight which was at least partially due to a decrease in food intake (both meal frequency and meal size). In Experiment 2, the daily intake of three macronutrient sources was measured. These data showed that treatment with DEX (0.5 and 1.0 mg/kg IP) led to an acute increase in protein intake, a sustained decrease in fat intake and no change in carbohydrate consumption. We suggest that this change in macronutrient selection may be an adaptive response which serves to ameliorate some of the effects of DEX treatment.

Original languageEnglish (US)
Pages (from-to)211-216
Number of pages6
JournalPhysiology and Behavior
Volume46
Issue number2
DOIs
StatePublished - Aug 1989

All Science Journal Classification (ASJC) codes

  • Experimental and Cognitive Psychology
  • Behavioral Neuroscience

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