Effect of One-Week Fasting on the Adipose Tissues of Rats
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The effect of the fasting on their adipose tissue weights, lipid contents of adipose tissues, and the fatty acid compositions of epididymal and perirenal fat pad lipids were studied in rats. When male rats of approximately 380g body weight were subjected for fasting of one week, their body weights decreased about 65g.<BR>The tissue weight of subcutaneous and perirenal adipose tissues decreased after one-week fasting significantly, followed by the decrease of epididymal fat pad. The decrease of mesenteric, omental, and interscapular fat tissues, however, was much less compared with this of the former three tissues. Lipid contents of six adipose tissues mentioned above were decreased significantly, especially in subcutaneous and perirenal adipose tissues, but in the epididymal adipose tissue the decrease was not remarkable in comparison to the formers. The mesenteric, omental, and interscapular adipose tissues showed only slight decreases.<BR>In epididymal adipose tissue, the loss of the weight of tissue after one-week fasting was 1.0g in average, whereas the decrease of lipid was 1.4g. The discrepancy of the figures may reveal the increase of the other tissue components than lipid. Such tendency was not observed in the other adipose tissues.<BR>The fatty acid composition of epididymal fat tissue was not changed by fasting, but the percentage of oleic acid increased significantly in perirenal fat tissue whose tissue weight and lipid content were decreased much more than the epididymal fat tissue.<BR>From the data obtained in the present study it is suggested that the each adipose tissue in fasting animals has different lipid metabolism.<BR>Adipose tissue metabolism <I>in vitro</I> and <I>in vivo</I> has been compared.
- 公益社団法人 日本栄養・食糧学会の論文
公益社団法人 日本栄養・食糧学会 | 論文
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