UTRN and muscular dystrophy: In an animal model of muscular dystrophy, long-term dietary QCT enrichment (0.2%) improved cardiac function in aged Mdx/Utrn+/− mice (lack of dystrophin and heterozygous knockout for utrophin; aged Mdx/Utrn+/− mice exhibit accelerated declines in cardiac health and dystrophic pathology) and increased mitochondrial protein content and dystrophin glycoprotein complex formation [87].