Dietary phytoestrogens increase metabolic resistance (cold tolerance) in long-chain acyl-CoA dehydrogenase-deficient mice.

Academic Article

Abstract

  • We evaluated the role of dietary phytoestrogens (PE) in the disease phenotype of cold intolerance that characterizes long-chain acyl-CoA dehydrogenase-deficient (LCAD-/-) mice, a model of inborn errors of mitochondrial fatty acid beta-oxidation. Male LCAD-/- mice were fed a standard diet containing endogenous PE, a PE-free diet, or a PE-free diet that was supplemented with genistein (250 microg/g diet). The standard diet did not restore complete cold tolerance, but it provided more resistance (P = 0.004) to cold challenge than the PE-free diet. There was a nonsignificant difference (P < 0.07) between LCAD-/- mice fed the genistein-supplemented diet and those fed the PE-free diet. There were no differences in end-point serum glucose concentrations among the 3 groups. Serum FFA were decreased in LCAD-/- mice fed the standard diet compared with those fed the PE-free diet (P = 0.005) and the diet supplemented with genistein (P < 0.001). Serum triglyceride concentrations were greater (P < 0.05) only in LCAD-/- mice fed the genistein-supplemented diet than those fed the standard diet. These results demonstrate the beneficial effects of dietary PE on metabolic tolerance in LCAD-/- mice. Furthermore, they suggest changes that could improve pediatric formula constituents, especially with regard to management of children with inborn errors of fatty acid oxidation.
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    Keywords

  • Acclimatization, Acyl-CoA Dehydrogenase, Long-Chain, Animals, Cold Temperature, Diet, Dietary Supplements, Genistein, Isoflavones, Male, Mice, Mice, Knockout, Phytoestrogens, Plant Preparations
  • Digital Object Identifier (doi)

    Author List

  • Schuler AM; Barnes S; Gower BA; Wood PA
  • Start Page

  • 1028
  • End Page

  • 1031
  • Volume

  • 134
  • Issue

  • 5