| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
ANIMAL GROWTH, PHYSIOLOGY, AND REPRODUCTION |
Department of Animal Science, National Taiwan University, Taipei 106, Taiwan
2 Correspondence: 50, Lane 155, Kee-Long Rd., Sec. 3, Taipei, Taiwan (phone: +8862-2732-7301; fax: +8862-2732-4070; e-mail: sding{at}ntu.edu.tw).
Abstract
To study the effect of dietary docosahexaenoic acid (DHA) on the expression of adipocyte determination and differentiation-dependent factor 1 (ADD1) mRNA in pig tissues, weaned, crossbred pigs (30 d of age) were fed either 2% (as-fed basis) tallow or DHA oil for 18 d. Body weight of the pigs was not affected by different dietary fatty acid (FA) compositions. The plasma and liver FA composition reflected the composition of the diet. The adipose tissue and skeletal muscle FA composition only partially reflected the diet, indicating either a slower FA turnover or that a greater proportion of the FA in these tissues is from endogenous FA synthesis. The ADD1 is an important transcription factor that modulates transcription of FA synthase to regulate the endogenous FA synthesis in the liver and adipose tissue. The ADD1 mRNA was decreased (P < 0.05) in the liver of DHA-treated pigs compared with that of the tallow-treated pigs. The diets did not have an effect on the ADD1 mRNA in pig adipose tissue. The ADD1 transcript was not detected in pig skeletal muscle. These results indicate that significant enrichment of liver DHA content inhibits the expression of ADD1 mRNA. Such an effect is similar to that reported in porcine differentiating adipocytes cultured with DHA. The liver and muscle acyl CoA oxidase mRNA concentration was increased (P < 0.05) by DHA oil treatment, suggesting that DHA treatment may increase peroxisomal fatty acid oxidation in these two tissues. Our present observations demonstrate that dietary DHA enrichment not only affects tissue DHA concentration but also mildly modifies the expression of genes related to fatty acid metabolism in the porcine liver and skeletal muscle.
Key Words: Acyl-CoA Oxidase • Adipocyte Determination and Differentiation-Dependent Factor 1 • Docosahexaenoic Acid • Fatty Acid Synthase • Pigs
This article has been cited by other articles:
|
|
 |
|
  C. H. Chen, P. H. Wang, B. H. Liu, H. H. Hsu, H. J. Mersmann, and S. T. Ding Serum Amyloid A Protein Regulates the Expression of Porcine Genes Related to Lipid Metabolism J. Nutr., April 1, 2008; 138(4): 674 - 679. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 C. H. Chen, E. C. Lin, W. T. K. Cheng, H. S. Sun, H. J. Mersmann, and S. T. Ding Abundantly expressed genes in pig adipose tissue: An expressed sequence tag approach J Anim Sci, October 1, 2006; 84(10): 2673 - 2683. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H. C. Wang, Y. H. Ko, H. J. Mersmann, C. L. Chen, and S. T. Ding The expression of genes related to adipocyte differentiation in pigs J Anim Sci, May 1, 2006; 84(5): 1059 - 1066. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. H. Liu, C. F. Kuo, Y. C. Wang, and S. T. Ding Effect of docosahexaenoic acid and arachidonic acid on the expression of adipocyte determination and differentiation-dependent factor 1 in differentiating porcine adipocytes J Anim Sci, July 1, 2005; 83(7): 1516 - 1525. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. T. Ding, B. H. Liu, and Y. H. Ko Cloning and expression of porcine adiponectin and adiponectin receptor 1 and 2 genes in pigs J Anim Sci, November 1, 2004; 82(11): 3162 - 3174. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
