LIPOGENESIS INSITU IN GENETICALLY OBESE ZUCKER FATTY RAT (FA-FA) - ROLE OF HYPERPHAGIA AND HYPERINSULINEMIA

被引:114
作者
GODBOLE, V [1 ]
YORK, DA [1 ]
机构
[1] SOUTHAMPTON UNIV,SCH BIOCHEM & PHYSIOL SCI,DEPT NUTR,SOUTHAMPTON S09 3TU,ENGLAND
关键词
adipose tissue; insulin; lipogenesis; Liver; pair-feeding; streptozotocin; Zucker fatty rat;
D O I
10.1007/BF00429780
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
In situ fatty acid synthesis has been measured with 3H2O in anaesthetised lean and obese Zucker (fa/fa) rats. The accumulation of fatty acids was increased in both the liver and adipose tissue of young fa/fa rats as a result of both an increased rate of lipogenesis and an increase in tissue mass. Whereas total hepatic lipogenesis increased with age, total adipose tissue lipogenesis decreased in older fa/fa rats. Experiments with hepatectomized rats showed that the liver was the major site of the excess fatty acid synthesis in fa/fa rats. The enhanced rate of lipogenesis in fa/fa rats was abolished by either pairfeeding or streptozotocin treatment. The results suggest that the increased fatty acid synthesis in fa/fa rats is secondary to the hyperphagia, hpyerinsulinaemia, and increased mass of hepatic and adipose tissues. © 1978 Springer-Verlag.
引用
收藏
页码:191 / 197
页数:7
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