Linked Life Data

9402608

Source:http://linkedlifedata.com/resource/pubmed/id/9402608

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1998-2-4
pubmed:abstractText
Prior studies have obtained conditioned preferences for flavors paired with intragastric (IG) infusions of Polycose (hydrolyzed starch) at concentrations of 1-32% over a different flavor paired with IG water. The present study determined if rats would also learn to prefer a flavor paired with concentrated Polycose infusion over a flavor paired with a more dilute Polycose infusion. In Experiment 1, adult female rats were food-deprived and trained during alternating one-bottle sessions (30 min/day) to associate one flavored solution (the CS + 8) with IG infusions of 8% Polycose, a second flavored solution (the CS + 16) with IG infusions of 16% Polycose, and a third flavored solution (the CS-) with IG water infusions. In subsequent choice tests, the rats displayed similar preferences for the CS + 8 and CS + 16 over the CS-, but preferred the CS + 16 to CS + 8 in a direct choice test. A similar preference pattern was obtained in 22 h/day tests with the rats nondeprived. In Experiment 2, new rats were similarly trained and tested but with CS + 16 and CS + 32 solutions paired with 16% and 32% Polycose infusions, respectively. The rats preferred both CS+ solutions over the CS- solution in the short- and long-term tests. However, the CS + 16 was preferred over the CS + 32 by the food-deprived rats in the short-term tests. The two CS+ solutions were equally preferred in the long-term tests with food ad lib. These and other findings indicate that the postingestive reinforcing action of Polycose increases as concentration increases from 1% to 16% but does not increase further, and may actually decrease, at a 32% concentration. The rapid satiating effect of concentrated carbohydrate solutions may limit their reinforcing consequences.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0031-9384
pubmed:author
pubmed:issnType
Print
pubmed:day
31
pubmed:volume
63
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
7-14
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Flavor preferences conditioned by intragastric polycose in rats: more concentrated polycose is not always more reinforcing.
pubmed:affiliation
Department of Psychology, Brooklyn College, City University of New York 11210, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.