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J Oleo Sci. 2007;56(10):533-41.

Modulation of cutaneous fatty acid-binding protein mRNA expression in rat adipose tissues by hereditary obesity and dietary fats.

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Laboratory of Nutritional Function, Division of Food Functionality, National Food Research Institute, Tsukuba, Japan.


Cutaneous fatty acid-binding protein (C-FABP) is a member of the intracellular lipid-binding protein multigene family expressed in various tissues. A high level of C-FABP mRNA in adipose tissue has been reported, but its physiological significance in regulating adipose tissue function is not clear. To obtain insights into the role of C-FABP in adipose tissue, we studied the obesity-related and dietary fat-related changes of C-FABP mRNA expression in adipose tissues. C-FABP mRNA levels in interscapular brown adipose tissue, and epididymal and perirenal white adipose tissues were higher in Zucker fatty rats than in lean controls despite that the difference in brown adipose tissue was not significant. Fish oil compared to palm and safflower oils significantly reduced the mRNA level of C-FABP in brown adipose tissue and epididymal and perirenal white adipose tissues in Sprague-Dawley rats except for one occasion. Our study demonstrated that C-FABP is a protein whose mRNA expression is easily modified by hereditary obesity and the type of dietary fat. Therefore, C-FABP may play a significant role in regulating adipocyte function in response to changes in nutritional conditions.

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