Epididymal fat depot lipoprotein lipase activity is lower in animals with high endogenous fat preferences

Curtiss B. Cook, Radha Nair, David Herminghuysen, Andrea Gatchair-Rose, Jayaraman Rao, Gregory J. Bagby, Chandan Prasad

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Adipose tissue lipoprotein lipase (LPL) is a key enzyme responsible for the clearance of circulating triglycérides and has been linked to certain pathologic states such as obesity. In order to investigate whether an animal's endogenous fat-preference is associated with differences in adipose tissue LPL, we measured enzyme activity in epididymal fat from high- and low-fat preferring rats. Utilizing a 24h ad libitum feeding paradigm, four groups of outbred adult male Sprague-Dawley rats were screened separately for their macronutrient preferences. Animals exhibiting high- or low-fat preferences were identified and placed back on standard chow. LPL activity was measured in epididymal fat under chow fed or fasted conditions. Epididymal fat LPL activity was significantly less in the high-fat-preferring animals relative to the low-fat-preferring, in both the standard chow-fed state (p = 0.014) and fasted (p = 0.0007) state. LPL activity in heart ventricle and brown adipose tissue was also measured from the same animals. Activity in heart ventricle and brown adipose tissue was significantly lower in the high-fat-preferring group as compared with the low-fat-preferring only following a 24h fast (p = 0.0012 for heart and p = 0.0085 for brown adipose, high- versus low-fat preferring). The data indicate that differences in tissue LPL activity exist between animals with inherent differences in fat preference. Future comparative studies between the two groups of fat-preferring animals could lead to important clues to the regulation of the LPL.

Original languageEnglish (US)
Pages (from-to)839-845
Number of pages7
JournalLife Sciences
Volume57
Issue number9
DOIs
StatePublished - Jul 21 1995

Keywords

  • adipose tissue
  • fat preference
  • lipids
  • lipoprotein lipase
  • macronutrient

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

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    Cook, C. B., Nair, R., Herminghuysen, D., Gatchair-Rose, A., Rao, J., Bagby, G. J., & Prasad, C. (1995). Epididymal fat depot lipoprotein lipase activity is lower in animals with high endogenous fat preferences. Life Sciences, 57(9), 839-845. https://doi.org/10.1016/0024-3205(95)02016-C