Journal
JOURNAL OF TRACE ELEMENTS IN MEDICINE AND BIOLOGY
Volume 25, Issue 2, Pages 97-102Publisher
ELSEVIER GMBH
DOI: 10.1016/j.jtemb.2011.01.003
Keywords
Cellulose; Pectin; Chromium(III); Lipid metabolism; Carbohydrate metabolism
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The effects of cellulose, pectin and chromium(III) on lipid and carbohydrate metabolism were investigated in rats. Eighty male Buffalo rats (n = 10/group, 4 weeks old) were fed experimental diets for 6 weeks. The two control groups received a fiber free diet (FF) or a fiber free diet plus chromium (FF + Cr) (2.53 mg Cr/kg diet). The other groups were fed diets containing 5% of cellulose (CEL), 5% of pectin (PEC) or 2.5% of cellulose plus 2.5% of pectin (CEL + PEC) with or without chromium. The daily food intake and body weight of the rats were not affected by the experimental diets. Total cholesterol level in plasma was significantly lower (p <= 0.05) in the PEC group than the rats fed the FF diet. Feeding of rats with the PEC + Cr diet resulted in a significantly higher concentration of plasma HDL cholesterol (p <= 0.05) when compared with the CEL + Cr group. No statistically significant differences in the concentrations of plasma triglycerides (TG) and non-esterified fatty acids (NEFA) between the groups were observed. Rats fed the CEL + Cr diet had a significantly lower content of cholesterol and rats fed the CEL + Cr diet lower contents of cholesterol and TG in the liver (p <= 0.05) when compared with other groups. The concentration of HbA1c was significantly lower (p <= 0.05) in rats fed the CEL and CEL + Cr diets than in other groups. A significantly lower concentration of plasma glucose (p <= 0.05) was observed in rats receiving the CEL + PEC diet in comparison with the FF group. A significant effect of fiber and chromium combination was shown only in the case of triglyceride content in the liver of rats (p <= 0.05). In conclusion, our results suggest that a diet containing fiber (PEC) and chromium or their supplements may be beneficial for correcting some disturbances of lipid metabolism, and a diet containing cellulose or its supplements may be used to improve glycemic control. (C) 2011 Elsevier GmbH. All rights reserved.
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