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  • Title: Effects of high fat-feeding to rats on the interrelationship of body weight, plasma insulin, and fatty acyl-coenzyme A esters in liver and skeletal muscle.
    Author: Chen MT, Kaufman LN, Spennetta T, Shrago E.
    Journal: Metabolism; 1992 May; 41(5):564-9. PubMed ID: 1588840.
    Abstract:
    Rats fed a high-saturated fat diet consumed more energy, gained more weight, and displayed hyperinsulinemia (P less than .05) without an elevation in the fasting plasma glucose level, compared with animals on two different high-carbohydrate diets. The total fatty acyl-coenzyme A (CoA) concentration was 18% (P less than .0001) and 46% (P less than .0001) higher in liver and skeletal muscle, respectively, from rats fed the high-fat diet compared with each of the other diet groups. Major long-chain fatty acyl-CoA molecular species of both tissues in high fat-fed rats reflected the fatty acid profile of the diet. Approximately 29%, 21%, and 16% of total liver and skeletal muscle fatty acyl-CoAs were comprised of oleoyl-CoA, palmitoyl-CoA, and stearoyl-CoA, respectively. The amounts of these three fatty acyl-CoA esters were significantly higher in liver and skeletal muscle after high-fat feeding than with the other diet treatments (P less than .0001). In contrast, the concentration of linoleoyl-CoA was lower in both tissues after high-fat feeding (P less than .0001). In rats fed the high-fat diet, plasma insulin levels were significantly correlated with gain in body weight or body weight (r = .80, P less than .001 for insulin and gain in body weight; r = .73, P less than .001 for insulin and body weight). Total fatty acyl-CoA ester content in liver and skeletal muscle was also strongly correlated with the plasma insulin concentration in high fat-fed rats (r = .80, P less than .001 for liver; r = .78, P less than .001 for skeletal muscle).(ABSTRACT TRUNCATED AT 250 WORDS)
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