Abstract

The relative amounts of carddac proteins such as laminin, fibronectin, cytochrome c oxidase, and isomyosin types were studied by gel electrophoresis and Western blotting in control and copper-deficient Sprague-Dawley rats of both sexes fed their respective diets from weanling for 3 weeks. Isomyosin types appeared to shift from V 1 to greater levels of V 3 in copper deficient rats for both genders. Male copper deficient rats had increased cardiac levels of fibronectin, decreased laminin levels, cardiac hypertrophy and anemia. Both male and female rats fed copper-deficient diet had lower levels of cytochrome c oxidase (CCO) subunit IV, and low liver copper, and high heart-to-body weight ratios compared with their respective controls.

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