Abstract
The effects of the interactions between dietary carbohydrates and copper deficiency on superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities and their roles in peroxidative pathways were investigated. Weanling rats were fed diets deficient in copper and containing either 62% starch, fructose, or glucose. Decreased activity of SOD was noted in all rats fed the copper-deficient diets regardless of the nature of dietary carbohydrate. However, the decreased activity was more pronouced in rats fed fructose. Feeding the fructose diets decreased the activity of GSH-Px by 25 and 50% in the copper-supplemented and copper-deficient rats, respectively, compared to enzyme activities in rats fed similar diets containing either starch or glucose. The decreased SOD and GSH-Px activities in rats fed the fructose diet deficient in copper were associated with increased tissue per-oxidation and decreased hepatic adenosine triphosphate (ATP). When the fructose in the diet of copper-deficient rats was replaced with either starch or glucose, tissue SOD and GSH-Px activities were increased and these increases in enzyme activity were associated with a tendency toward reduced mitochondrial peroxidation when compared to the corre-sponding values for rats fed fructose throughout the experiment Dietary fructose aggrevated the symptoms associated with copper deficiency, but starch or glucose ameliorated them. The protective effects were more pronounced with starch than with glucose.
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Fields, M., Ferretti, R.J., Cecil Smith, J. et al. Interaction Between Dietary Carbohydrate and Copper Nutriture on Lipid Peroxidation in Rat Tissues. Biol Trace Elem Res 6, 379–391 (1984). https://doi.org/10.1007/BF02989255
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DOI: https://doi.org/10.1007/BF02989255
Index Entries
- Copper-deficient rats
- and carbohydrate and lipid peroxidation
- corn starch
- and copper and lipid peroxidation
- fructose
- and copper and lipid peroxidation
- glucose
- and copper and lipid peroxidation
- copper deficiency
- and ceruloplasmin activity
- copper deficiency
- and copper superoxide dismutase
- copper deficiency
- and glutathione peroxidase
- copper deficiency
- and lipid peroxidation