scholarly journals The Effect of Gari Feeding on the Changes in Lipid Levels and Lipoprotein Lipase Activity in Adipose Tissue

1988 ◽  
Vol 4 (3) ◽  
pp. 197-201
Author(s):  
Ikpendu C. ONONOGBU
Keyword(s):  
Adipose Tissue ◽  
Lipoprotein Lipase ◽  
Lipase Activity ◽  
Lipoprotein Lipase Activity ◽  
Lipid Levels

scholarly journals Post-translational regulation of lipoprotein lipase activity in adipose tissue

1978 ◽  
Vol 176 (3) ◽  
pp. 865-872 ◽  
Author(s):  
P Ashby ◽  
D P Bennett ◽  
I M Spencer ◽  
D S Robinson
Keyword(s):  
Adipose Tissue ◽  
Lipoprotein Lipase ◽  
Lipase Activity ◽  
Translational Regulation ◽  
Progressive Increase ◽  
Lipoprotein Lipase Activity ◽  
Dependent Part ◽  
Adipose Tissue Lipoprotein Lipase ◽  
Energy Dependent

Changes in adipose-tissue lipoprotein lipase activity that are independent of protein synthesis were investigated in an incubation system in vitro. Under appropriate conditions at 25 degrees C a progressive increase in the enzyme activity occurs that is energy-dependent. Part of the enzyme is rapidly inactivated when the tissue is incubated with adrenaline or adrenaline plus theophylline. The mechanism of this inactivation appears to be distinct from, and to follow, the activation of the enzyme. A hypothesis is presented to account for the results in terms of an activation of the enzyme during obligatory post-translational processing and a catecholamine-regulated inactivation of the enzyme as an alternative to secretion from the adipocyte.

scholarly journals Increase in Lipoprotein Lipase Activity in Isolated Rat Adipose Tissue by Selenate.

1993 ◽  
Vol 16 (1) ◽  
pp. 6-10 ◽  
Author(s):  
Hiroshi UEKI ◽  
Yusuke OHKURA ◽  
Toshio MOTOYASHIKI ◽  
Nobuaki TOMINAGA ◽  
Tetsuo MORITA
Keyword(s):  
Adipose Tissue ◽  
Lipoprotein Lipase ◽  
Lipase Activity ◽  
Lipoprotein Lipase Activity ◽  
Rat Adipose Tissue ◽  
Isolated Rat

scholarly journals Adipose-tissue lipoprotein lipase activity and cellularity in the genetically obese Zucker rat (fa/fa) (Short Communication)

1973 ◽  
Vol 132 (3) ◽  
pp. 633-635 ◽  
Author(s):  
P. de Gasquet ◽  
E. Péquignot ◽  
D. Lemonnier ◽  
A. Alexiu
Keyword(s):  
Adipose Tissue ◽  
Surface Area ◽  
Lipoprotein Lipase ◽  
Lipase Activity ◽  
Enzyme Activities ◽  
Short Communication ◽  
Zucker Rat ◽  
Lipoprotein Lipase Activity ◽  
Obese Zucker Rat ◽  
Adipose Tissue Lipoprotein Lipase

The lipoprotein lipase activity per adipocyte was increased in the genetically obese rat (fa/fa). However, there was no difference between obese and lean animals when the enzyme activities were related to adipocyte surface area. The possible implications of the findings are discussed.

Refeeding and insulin increase lipoprotein lipase activity in rat brown adipose tissue

1989 ◽  
Vol 256 (5) ◽  
pp. E645-E650 ◽  
Author(s):  
C. M. Carneheim ◽  
S. E. Alexson
Keyword(s):  
Enzyme Activity ◽  
Adipose Tissue ◽  
Brown Adipose Tissue ◽  
Lipoprotein Lipase ◽  
Lipase Activity ◽  
Starvation Period ◽  
Lipoprotein Lipase Activity ◽  
Mrna Synthesis ◽  
Beta Adrenergic ◽  
Brown Adipose

Induction of lipoprotein lipase activity in brown adipose tissue (BAT) in response to cold stress has earlier been shown to be regulated by a beta-adrenergic mechanism and to be dependent on mRNA synthesis. In the present study, we have investigated the acute effects of refeeding after a short starvation period and the hormonal mechanism underlying the observed effects. Refeeding was found to rapidly increase tissue wet weight and lipoprotein lipase activity. The increase in enzyme activity could be blocked by the RNA synthesis inhibitor actinomycin D, indicating a gene activation. beta-Adrenergic blockade had no effect on this elevation of enzyme activity, but the increase could be mimicked by insulin injection. The results suggest that BAT contains two different pathways for regulation of lipoprotein lipase activity, both involving mRNA synthesis.

Regional changes in adipose tissue blood flow and metabolism in rats after a meal

1989 ◽  
Vol 257 (4) ◽  
pp. R711-R716 ◽  
Author(s):  
D. B. West ◽  
W. A. Prinz ◽  
M. R. Greenwood
Keyword(s):  
Blood Flow ◽  
Adipose Tissue ◽  
Lipoprotein Lipase ◽  
Lipase Activity ◽  
Tissue Blood Flow ◽  
Lipoprotein Lipase Activity ◽  
Fat Depots ◽  
Adipose Tissue Blood Flow ◽  
Regional Specificity ◽  
Adipose Tissue Lipoprotein Lipase

Adipose tissue blood flow was measured in five depots, and plasma concentrations of glucose, insulin, and triglyceride were measured at 0, 15, 30, and 45 min after the start of a meal in unanesthetized, freely moving rats. In addition, adipose tissue lipoprotein lipase activity was measured in four depots before and 45 min after the start of a meal. Plasma glucose was significantly elevated only at the 15-min time point, and while plasma triglyceride increased these changes did not reach significance. Plasma insulin was significantly elevated at all time points after a meal. Feeding resulted in a consistent decrease of adipose tissue blood flow expressed per gram wet weight of tissue. This decrease was maximal at 30 min after the start of feeding. The decrease in adipose tissue blood flow averaged 45% at 45 min after the start of feeding for the five depots evaluated. Lipoprotein lipase activity significantly increased in the retroperitoneal and mesenteric fat depots at 45 min after the meal start, but did not change in the epididymal or dorsal subcutaneous fat depots. These results suggest that a decrease in adipose tissue blood flow is a normal result of a meal in the rat. The regional specificity of changes in adipose tissue lipoprotein lipase activity supports the concept of regional specificity of function for adipose tissue and suggests that the mesenteric and retroperitoneal depots are particularly important for the storage of triglycerides immediately after a meal.

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