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The impact of iron content in a diet high in fat, fructose, and salt on metabolic state and mineral status of rats

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Abstract

The purpose of the study was to assess the influence of dietary iron content on lipid and carbohydrate metabolism and on zinc and copper status in rats fed with a diet high in fat, fructose, and salt. Wistar rats were fed with diets high in fat, fructose, and salt, containing differing amounts of iron, namely, deficit, normal, and high levels. After 6 weeks, the animals were weighed and killed. The liver, heart, and pancreas were collected, as were blood samples. The total cholesterol, triglycerides, fasting glucose, and insulin levels in the serum were measured. The iron, zinc, and copper concentrations in tissues and serum were determined. It was found that in rats fed with the iron-deficit diet, cholesterol and glucose profiles improved. Both deficit and excess iron in the diet decreased insulin concentration in rats and disturbed iron, zinc, and copper status. High-iron level in the diet decreased the relative mass of the pancreas. In conclusion, the decrease in serum insulin concentration observed in rats fed with the modified diet high in iron was associated with iron and copper status disorders, and also, with a relatively diminished pancreas mass. A deficit of iron in the diet improved lipid and carbohydrate metabolism in rats.

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  1. Department of Human Nutrition and Hygiene, Poznan University of Life Sciences, Wojska Polskiego 31 Str., 60-624, Poznań, Poland

    Joanna Suliburska

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  1. Joanna Suliburska
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Suliburska, J. The impact of iron content in a diet high in fat, fructose, and salt on metabolic state and mineral status of rats. J Physiol Biochem 70, 27–32 (2014). https://doi.org/10.1007/s13105-013-0276-1

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  • DOI: https://doi.org/10.1007/s13105-013-0276-1

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