Copper Deficiency and Cardiac Health
Summary
Copper is an essential trace element required for numerous enzymatic processes that underpin cardiovascular function. It serves as a cofactor for cytochrome c oxidase in the mitochondrial respiratory chain, superoxide dismutase in antioxidant defence and lysyl oxidase in the cross-linking of collagen and elastin within the cardiac extracellular matrix. Experimental models have demonstrated that severe copper deficiency disrupts mitochondrial energy production, elevates reactive oxygen species and compromises myocardial contractility, culminating in dilated cardiomyopathy. Epidemiological observations further suggest that suboptimal copper intake may exacerbate heart failure and hypertension in vulnerable populations. Global trends in dietary patterns, soil depletion and shifts in agricultural practices have reignited interest in the prevalence of marginal copper status and its impact on cardiac health. Nutritional interventions, including dietary diversification and targeted supplementation, show promise in restoring copper-dependent enzyme activity and ameliorating structural and functional deficits in the heart. Ongoing research aims to refine diagnostic biomarkers for early detection of deficiency and to establish evidence-based guidelines for copper intake in cardiac patients and at-risk groups.
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Copper Deficiency and Cardiac Health publication trend
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Technical terms
Cytochrome c oxidase: A multi-subunit enzyme complex in the mitochondrial electron transport chain that requires copper to catalyse the final step of cellular respiration.
Cardiomyopathy: A group of diseases affecting the heart muscle, leading to altered structure and impaired contraction or relaxation.
Reactive oxygen species (ROS): Highly reactive molecules derived from oxygen that can damage cellular components if not adequately neutralised by antioxidant systems.
Mitochondria: Organelles responsible for generating the majority of cellular ATP through oxidative phosphorylation, central to cardiac energy metabolism.
References
- THE EFFECT OF DEFICIENCIES IN COPPER AND IRON ON THE CYTOCHROME OXIDASE OF RAT TISSUES. Journal of Biological Chemistry (1939).
- The effects of copper depletion on cytochrome c oxidase.. Journal of Biological Chemistry (1981).
- The Effects of Different Treatments on Serum Trace Element Levels in Dogs with Heart Failure. Animals (2024).
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