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Titolo:
Dilutions of low- vs. high-fat diets on intakes and gastric volumes in rats
Autore:
Meyer, JH; Elashoff, JD;
Indirizzi:
VA Greater Los Angeles Healthcare Syst, W Los Angeles Healthcare Ctr, DeptMed, Los Angeles, CA USA VA Greater Los Angeles Healthcare Syst Los Angeles CA USA ngeles, CA USA Cedars Sinai Med Ctr, Biostat Core Res Inst, Los Angeles, CA 90048 USA Cedars Sinai Med Ctr Los Angeles CA USA 90048 , Los Angeles, CA 90048 USA Univ Calif Los Angeles, Sch Med, Los Angeles, CA 90024 USA Univ Calif Los Angeles Los Angeles CA USA 90024 Los Angeles, CA 90024 USA
Titolo Testata:
PHYSIOLOGY & BEHAVIOR
fascicolo: 3, volume: 72, anno: 2001,
pagine: 325 - 337
SICI:
0031-9384(200102)72:3<325:DOLVHD>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
FOOD-INTAKE; ENERGY-INTAKE; INTRAGASTRIC BALLOON; OBESE SUBJECTS; SOLID FOOD; SATIETY; WEIGHT; DENSITY; CARBOHYDRATE; ABSORPTION;
Keywords:
fat; sensation; satiety; gastric distension; compensation; adaptation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Meyer, JH VA Greater Los Angeles Healthcare Syst, W Los Angeles HealthcareCtr, DeptMed, Bldg 115,11301 Wilshire Blvd, Los Angeles, CA USA VA GreaterLos Angeles Healthcare Syst Bldg 115,11301 Wilshire Blvd Los Angeles CA USA
Citazione:
J.H. Meyer e J.D. Elashoff, "Dilutions of low- vs. high-fat diets on intakes and gastric volumes in rats", PHYSL BEHAV, 72(3), 2001, pp. 325-337

Abstract

Rats adapt to changes in dietary energy to maintain nearly constant energyintakes. This regulation indicates that animals sense and respond to nutrient content. We sought to determine whether this response was affected by the fat content of the diet. Our second goal was to determine how energy dilution affected intragastric volumes. Rats were randomized to high (18% w/w)and low fat (4.5% w/w) as the energy density of the diet was altered from 2.0 to 3.5 kcal/g. Average energy intake during 7-h feeds rose steeply (P<.01) when density was increased from 2.0 to 3.0 kcal/g, but modestly as density increased from 3.0 to 3.5 kcal/g. In other rats on 18% vs. 32% fat diets, energy intakes increased significantly (P<.01) as density of the diet was raised from 3.5 to 4.5 kcal/g. During diets at 2.0 and 2.5 kcal/g, animals on 18% fat ate fewer kilocalories than those on 4.5% fat; but over 3.0-4.5 kcal/g, energy intake was;similar regardless of fat concentration (4.5-32%). Gastric contents after 7-h feeds increased with grams of food ingested similarly for high- and low-fat diets; We concluded that in rats: (a) compensation to energy dilution or concentration was inexact but (b) was about equal for high- vs, low-fat diets; thus, high fat was as well sensed as highcarbohydrate; (c) compensations for energy densities were made despite varied gastric volumes;thus, rats learned to override the stimulus of gastric sh-etch and to sense energy via extra gastric mechanisms. (C) 2001 ElsevierScience Inc. All rights reserved.

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Documento generato il 05/12/20 alle ore 02:01:26