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Entire potato consumption improves lipid metabolism and antioxidant status in cholesterol-fed rat

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Abstract

Background

Vegetables and fruits are rich sources of a variety of nutrients, including vitamins (E and C), trace minerals, and dietary fibers, and many other classes of biologically active compounds such as carotenoids and polyphenols, which are often assumed to protect against degenerative pathologies such as cardiovascular diseases. Although potato is considered as a starchy food, it is also included in the category of vegetables by its micronutrient content.

Aim of the study

In the present study, we investigated in the rat the effect of a potato-enriched diet on lipid metabolism and antioxidant protection.

Results

Feeding rats a potato-enriched diet for 3 weeks led to a significant decrease in cholesterol and triglyceride levels in plasma (respectively, −30%, P<0.0001 and −36%, P<0.05) and cholesterol level in liver (−42%, P<0.0001). Antioxidant status was also improved by potato consumption. TBARS levels in heart were decreased and vitamin E/triglycerides ratio in plasma was improved.

Conclusions

Our present results suggest that consumption of cooked potatoes (consumed with skin) may enhance antioxidant defense and improve the lipid metabolism. These effects could be interesting for prevention of cardiovascular disease.

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Acknowledgements

L. Robert and A. Narcy were supported by CNIPT (Comité National Interprofessionnel de la Pomme de Terre), 9 rue d’Athènes, 75009 Paris, France.

We gratefully acknowledge Catherine Besson, Bernard Lyan, Sylvie Mercier, Pierre Lamby and Marie-Anne Verny for their respective technical assistance and their contribution in animal handling. This work was supported by A.N.R.T. (Association Nationale pour la Recherche et Technique), I.N.R.A. (Institut National de la Recherche Agronomique) and C.N.I.P.T. (Comité National Interprofessionnel de la Pomme de Terre).

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Authors and Affiliations

  1. Unité des Maladies Métaboliques et Micronutriments Institut National de Recherche Agronomique Centre de Clermont-Ferrand/Theix, 63122, Saint-Genès Champanelle, France

    Laëtitia Robert, Agnès Narcy, Edmond Rock, Christian Demigne, Andrzej Mazur & Christian Rémésy

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  1. Laëtitia Robert
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  2. Agnès Narcy
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  3. Edmond Rock
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  4. Christian Demigne
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  6. Christian Rémésy
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Correspondence to Christian Rémésy.

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Robert, L., Narcy, A., Rock, E. et al. Entire potato consumption improves lipid metabolism and antioxidant status in cholesterol-fed rat. Eur J Nutr 45, 267–274 (2006). https://doi.org/10.1007/s00394-006-0594-y

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  • DOI: https://doi.org/10.1007/s00394-006-0594-y

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