|
|
||||||||
Journal of Lipid Research, Vol 31, 623-631, Copyright © 1990 by Lipid Research, Inc.
ARTICLES |
G Shillabeer, J Hornford, JM Forden, NC Wong and DC Lau
Department of Medicine, University of Calgary, Alberta, Canada.
Small changes in lipogenic enzyme activity induced by dietary fats of different composition may, over the long term, have significant impact on the development of obesity. We have investigated the effect of high fat diets (45% of calories as fat) on abundance of mRNA encoding fatty acid synthetase (FAS) and glycerophosphate dehydrogenase (GPDH) in male Sprague-Dawley rats. When caloric intake was equal, the relative amount of hepatic FAS mRNA was greater in rats fed a saturated compared to a polyunsaturated fat diet. This difference could not be attributed to diet-induced changes in plasma insulin concentration. However, both fat diets suppressed hepatic FAS mRNA compared to a sucrose diet. Close correlation between FAS specific activity and the relative amount of mRNA suggested that regulation was mainly at a pre-translational level. Adipose tissue FAS mRNA was suppressed by the two fat diets equally while GPDH mRNA was unaffected by dietary composition. Retroperitoneal fat pads were significantly larger in rats fed saturated compared to those fed polyunsaturated fat for 26 weeks. We concluded that dietary saturated fats fail to suppress hepatic de novo lipogenesis as effectively as polyunsaturated fats, which may have implications for the prevention of obesity in humans.
This article has been cited by other articles:
![]() |
J. A. Vogt, K. B. Ishii-Schrade, P. B. Pencharz, P. J. H. Jones, and T. M. S. Wolever L-Rhamnose and Lactulose Decrease Serum Triacylglycerols and Their Rates of Synthesis, but Do Not Affect Serum Cholesterol Concentrations in Men J. Nutr., August 1, 2006; 136(8): 2160 - 2166. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. J. Azain Role of fatty acids in adipocyte growth and development J Anim Sci, March 1, 2004; 82(3): 916 - 924. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. ROSSMEISL, I. SYROVY, F. BAUMRUK, P. FLACHS, P. JANOVSKÁ, and J. KOPECKY Decreased fatty acid synthesis due to mitochondrial uncoupling in adipose tissue FASEB J, September 1, 2000; 14(12): 1793 - 1800. [Abstract] [Full Text] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| All ASBMB Journals | Journal of Biological Chemistry |
| Molecular and Cellular Proteomics | ASBMB Today |