Food intake and meal patterns in rhesus monkeys: Significance of chronic hyperinsulinemia

1990 ◽  
Vol 48 (4) ◽  
pp. 519-522
Author(s):  
Judy Hannah ◽  
Barbara C Hansen
Keyword(s):  
Food Intake ◽  
Rhesus Monkeys ◽  
Meal Patterns

scholarly journals Salmon calcitonin reduces food intake through changes in meal sizes in male rhesus monkeys

2008 ◽  
Vol 295 (1) ◽  
pp. R76-R81 ◽  
Author(s):  
Nicholas T. Bello ◽  
Matthew H. Kemm ◽  
Timothy H. Moran
Keyword(s):  
Food Intake ◽  
Salmon Calcitonin ◽  
Rhesus Monkeys ◽  
Nonhuman Primates ◽  
Dose Range ◽  
Meal Size ◽  
Meal Patterns ◽  
Daily Food Intake ◽  
Daily Food ◽  
Male Rhesus

Amylinergic mechanisms are believed to be involved in the control of appetite. This study examined the effects of the amylin agonist, salmon calcitonin, on food intake and meal patterns in adult male rhesus monkeys. Fifteen minutes before the onset of their 6-h daily feeding period, monkeys received intramuscular injections of various doses of salmon calcitonin (0.032, 0.056, 0.1, 0.32, and 1 μg/kg) or saline. Salmon calcitonin dose dependently reduced total daily and hourly food intake, with significant decreases at the 0.1, 0.32, and 1 μg/kg doses. Daily food intake was reduced by ∼35%, 62%, and 96%, at these doses, respectively. An analysis of meal patterns revealed that size of the first meal was significantly reduced across the dose range of 0.056 to 1 μg/kg, while average meal size was reduced with the 0.32 and 1 μg/kg doses. Meal number was only affected at the 1 μg/kg dose. Repeated 5-day administration of the 0.1 μg/kg dose resulted in a reduction in daily food intake only on injection day 2, while significant reductions in food intake were observed on all five injection days with a 0.32 μg/kg dose. Daily food intake was also reduced for 1 day after the termination of the 5-day injections of the 0.32 μg/kg salmon calcitonin dose. These sustained reductions in intake were expressed through decreases in meal size. These data demonstrate that salmon calcitonin acutely and consistently decreases food intake mainly through reductions in meal sizes in nonhuman primates.

scholarly journals Small changes in meal patterns lead to significant changes in total caloric intake. Effects of diet and social status on food intake in female rhesus monkeys

Appetite ◽  
2013 ◽  
Vol 62 ◽  
pp. 60-69 ◽  
Author(s):  
Carla J. Moore ◽  
Jonathan Lowe ◽  
Vasiliki Michopoulos ◽  
Patrick Ulam ◽  
Donna Toufexis ◽  
...  
Keyword(s):  
Food Intake ◽  
Social Status ◽  
Rhesus Monkeys ◽  
Caloric Intake ◽  
Meal Patterns ◽  
Total Caloric Intake ◽  
Female Rhesus

The effects of chronic nicotine on meal patterns, food intake, metabolism and body weight of male rats

2010 ◽  
Vol 95 (1) ◽  
pp. 92-99 ◽  
Author(s):  
L.L. Bellinger ◽  
P.J. Wellman ◽  
R.B.S. Harris ◽  
E.W. Kelso ◽  
P.R. Kramer
Keyword(s):  
Body Weight ◽  
Food Intake ◽  
Male Rats ◽  
Meal Patterns ◽  
Chronic Nicotine

Effect of adrenalectomy and corticosterone replacement on meal patterns of Zucker rats

1985 ◽  
Vol 249 (5) ◽  
pp. R584-R594 ◽  
Author(s):  
M. R. Freedman ◽  
T. W. Castonguay ◽  
J. S. Stern
Keyword(s):  
Weight Gain ◽  
Food Intake ◽  
Body Weight Gain ◽  
Zucker Rats ◽  
Meal Frequency ◽  
Light Cycle ◽  
Dark Cycle ◽  
Meal Patterns ◽  
Total Food Intake ◽  
Total Food

Male obese and lean Zucker rats were adrenalectomized (ADX) or sham-operated at 10 wk of age. Approximately 16 wk later, patterns of food intake were monitored by computer-interfaced top loading balances. Data were collected from ADX rats before, during, and after access to a corticosterone-supplemented saline solution (20 micrograms/ml). Although total food intake during the precorticosterone treatment period was not different between ADX and sham controls, ADX resulted in attenuation of light cycle food intake, primarily via decreased meal frequency. With steroid replacement, light cycle meal frequency and food intake increased. Despite comparable self-administered dose (20.33 +/- 0.89 vs. 17.05 +/- 1.2 mg corticosterone/period, obese vs. lean), obese ADX rats were more responsive to steroid than were lean ADX rats. This increased responsiveness was reflected by a 30% increase in food intake and 60% increase in body weight gain of obese ADX rats during replacement. Lean ADX rats exhibited no change in total food intake or weight gain with replacement. Further, during corticosterone treatment, obese ADX rats increased meal frequency, total food intake, and consumption of large meals (greater than or equal to 4 g) during the dark cycle. Significant postprandial correlations were found only in obese ADX rats, both with and without replacement during the dark cycle. These results suggest adrenal glucocorticoids have a minimal effect on food intake and meal patterns in lean Zucker rats but significantly alter intake and meal patterns in obese rats.

Diurnal food intake patterns of broiler chickens offered a choice of feed varying in protein content

1992 ◽  
Vol 1992 ◽  
pp. 85-85 ◽  
Author(s):  
F. Shariatmadari ◽  
J.M. Forbes
Keyword(s):  
Food Intake ◽  
Protein Content ◽  
Protein Intake ◽  
Broiler Chickens ◽  
The Other ◽  
Meal Patterns ◽  
Low Protein ◽  
Regulate Protein ◽  
Intake Regulation ◽  
Food Intake Patterns

The ability of broiler chickens to regulate protein intake when given a choice of high- and low-protein feeds has been demonstrated (Shariatmadari and Forbes, 1990). However, it is not know whether birds take several meals from one feed and then several from the other, or whether both feeds are taken in mixed meals. Therefore, to determine how protein intake regulation operates on a meal-to-meal basis, the meal patterns of broiler chickens were automatically recorded when they were offered two feeds of different protein content.

The Meal Patterns of the Oestrous Cycle and Their Motivational Significance

1974 ◽  
Vol 26 (3) ◽  
pp. 489-494 ◽  
Author(s):  
R. F. Drewett
Keyword(s):  
Food Intake ◽  
Direct Effect ◽  
Ovarian Hormones ◽  
Oestrous Cycle ◽  
Sexual Receptivity ◽  
Reduce Food Intake ◽  
Short Term ◽  
Meal Patterns ◽  
Nutritional Deprivation ◽  
The Way

Food intake was monitored continuously throughout the oestrous cycle of the rat by operant methods. On the night of oestrus the size of meals eaten was reduced and the average intermeal interval was shorter; and even after meals of the same size, oestrous animals returned to eat again more quickly than dioestrous animals. These results suggest that the way in which ovarian oestrogens reduce food intake is by intensifying processes responsible for the short-term satiation of hunger without affecting the motivational processes responsible for its arousal. Signs of motivational arousal at oestrus could thus be the result of a self-imposed nutritional deprivation, rather than a direct effect of ovarian hormones on sexual receptivity.

Cholecystokinin-decreased food intake in rhesus monkeys

1976 ◽  
Vol 230 (1) ◽  
pp. 15-18 ◽  
Author(s):  
J Gibbs ◽  
JD Falasco ◽  
PR McHugh
Keyword(s):  
Biological Activity ◽  
Food Intake ◽  
Food Deprivation ◽  
Test Meal ◽  
Rhesus Monkeys ◽  
Significant Inhibition ◽  
Solid Food ◽  
Threshold Dose

Five rhesus monkeys were infused intravenously with partially purified cholecystokinin (CCK) Just prior to a test meal of solid food after overnight food deprivation; CCK produced large, rapid, dose related suppressions of feeding. The lowest dose tested (5 Ivy U/kg body wt) produced a significant inhibition of food intake (26% suppression, P less than 0.05). Equivalent infusions of partially purified CCK or the synthetic COOH-terminal octapeptide of CCK (a pure fragment with all the biological activity of the full molecule) produced equivalent suppressions. In a second experiment, gastric preloads of a potent releaser of endogenous CCK, L-phenylalanine (L-Phe), and a weak releaser, D-phenylalanine (D-Phe) were compared for their relative abilities to suppress food intake at a test meal in nine rhesus monkeys after overnight deprivation. L-Phenylalanine produced large, rapid, dose-related suppressions of feeding, but D-Phe did not. The threshold dose of L-Phe was 0.5 g/kg (32% suppression, P less than 0.01). Neither CCK nor L-Phe caused signs of illness in these experiments. The results demonstrate that intravenous exogenous CCK suppresses feeding in rhesus monkeys and suggest that endogenous CCK has the same effect; they are consistent with the hypothesis that CCK is a satiety signal.

Food intake in rhesus monkeys following central administration of orexins

2005 ◽  
Vol 124 (1-3) ◽  
pp. 209-214 ◽  
Author(s):  
Jon J. Ramsey ◽  
Joseph W. Kemnitz ◽  
Wendy Newton ◽  
Kevork Hagopian ◽  
Terrell A. Patterson ◽  
...  
Keyword(s):  
Food Intake ◽  
Rhesus Monkeys ◽  
Central Administration
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