Influence of diet on the production of a 'lipid-depleting' factor in obese parabiotic rats

R. B.S. Harris, R. J. Martin

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

When one member of a parabiosed pair of rats is made obese its partner experiences a specific loss of body fat. In this study we determined whether production of the 'lipid-depleting' factor in obese rats was diet specific. One member in each of 30 pairs was tube fed 200% normal intake of high carbohydrate (CHO), high fat corn oil or high fat medium-chain triglyceride diet. Their partners and both members of five control pairs ate CHO diet ad libitum. After 27 d of 200% feeding, in vitro hepatic, adipose and hypothalamic metabolism were measured. Composition of the diet used to induce obesity did not change the response of partners. All non-tube-fed partners had normal food intakes, body protein, hepatic fatty acid synthesis (FAS) and esterification (FAE), palmitate, glucose and β-hydroxybutyrate oxidation. Adipose FAS and FAE were depressed, body fat was halved. Hypothalamic metabolism was not changed. A lipid-depleting agent originating in obese rats specifically inhibits adipose lipogenesis in their partners. Production of this factor does not appear to be influenced by dietary energy source.

Original languageEnglish (US)
Pages (from-to)2013-2027
Number of pages15
JournalJournal of Nutrition
Volume116
Issue number10
DOIs
StatePublished - Jan 1 1986
Externally publishedYes

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

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