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In , Chinese scientists reported that selenium had been linked to Keshan disease, an endemic juvenile cardiomyopathy found in China. However, certain epidemiological features of the disease could not be explained solely on the basis of inadequate selenium nutrition. Fluctuations in the seasonal incidence of the disease suggested involvement of an infectious agent. Indeed, a coxsackievirus B4 isolated from a Keshan disease victim caused more heart muscle damage when inoculated into selenium-deficient mice than when given to selenium-adequate mice.
Those results led us to study the relationship of nutritional status to viral virulence. When the experiment was repeated using vitamin E-deficient mice, the same 6 point mutations were found.
This is the first report of a specific host nutritional deficiency altering viral genotype. Keshan disease may be the result of several interacting causes including a dominant nutritional deficiency selenium , other nutritional factors vitamin E, polyunsaturated fatty acids , and an infectious agent virus. Unable to display preview. Download preview PDF. Skip to main content.
Advertisement Hide. Interacting nutritional and infectious etiologies of Keshan disease Insights from coxsackie virus B-induced myocarditis in mice deficient in selenium or vitamin E. This is a preview of subscription content, log in to check access.