|
|
||||||||
AJP - Endocrinology and Metabolism, Vol 250, Issue 4 480-E485, Copyright © 1986 by American Physiological Society
ARTICLES |
E. T. Poehlman, J. P. Despres, M. Marcotte, A. Tremblay, G. Theriault and C. Bouchard
The present study investigated the interaction of genotype and short-term overfeeding on adipose tissue metabolism of six pairs of male monozygotic twins. The sedentary nonobese twins were submitted to a 22-day overfeeding period in which their normal daily intake was supplemented by an additional 1,000 kcal/day. A fat tissue biopsy was performed in the suprailiac region before and after overfeeding to determine fat cell diameter and basal and maximal stimulated epinephrine, norepinephrine, and isoproterenol lipolysis from collagenase-isolated fat cells. Fat cell basal and maximal insulin-stimulated glucose conversion into triglycerides (basal and stimulated lipogenesis) were measured using [14C]glucose. Adipose tissue heparin-releasable lipoprotein lipase activity (LPL) was also determined. A repeated measures analysis of variance revealed overfeeding induced significant elevations in basal lipogenesis (P less than 0.05) and fat cell diameter (P less than 0.05). No significant group changes were noted in basal, epinephrine-, norepinephrine-, and isoproterenol-stimulated lipolysis, insulin-stimulated lipogenesis, and LPL activity due to large individual variation in the response to overfeeding. However, significant intrapair resemblance was noted in the changes of the aforementioned variables, suggesting a coherent within-twin pair response, despite large between-pair variation in response. Less within-pair similarity was noted in changes in basal lipogenesis and fat cell diameter. The results of the present study suggest that overfeeding induced a large range of adipose tissue metabolic responses and that the genotype plays a role in determining the sensitivity of adipose tissue adaptation to caloric affluence.
This article has been cited by other articles:
![]() |
L. Perusse, T. Rice, J. P. Despres, J. Bergeron, M. A. Province, J. Gagnon, A. S. Leon, D. C. Rao, J. S. Skinner, J. H. Wilmore, et al. Familial Resemblance of Plasma Lipids, Lipoproteins and Postheparin Lipoprotein and Hepatic Lipases in the HERITAGE Family Study Arterioscler. Thromb. Vasc. Biol., November 1, 1997; 17(11): 3263 - 3269. [Abstract] [Full Text] |
||||
![]() |
W. Group, S. S. Gidding, R. L. Leibel, S. Daniels, M. Rosenbaum, L. Van Horn, and G. R. Marx Understanding Obesity in Youth: A Statement for Healthcare Professionals From the Committee on Atherosclerosis and Hypertension in the Young of the Council on Cardiovascular Disease in the Young and the Nutrition Committee, American Heart Association Circulation, December 15, 1996; 94(12): 3383 - 3387. [Full Text] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| Visit Other APS Journals Online |