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Plasma and urinary selenium in Saudi Arabian patients with dilated cardiomyopathy

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Abstract

We measured selenium (Se) levels in the urine and blood plasma samples of 72 Saudi Arabian patients with dilated cardiomyopathy (DCM) and 70 control subjects of the same origin. To correct for differences in the hydration state of the subjects, the selenium concentration for each urine sample was normalized by dividing it by the concentration of creatinine (CREAT) in the same sample. The median (and range) of the values found for the concentration of Se in plasma, urine, and normalized concentration in urine for the control subjects was 1.306 (0.66–2.50) μM, 0.478 (0.05–2.00) μM, and 56.7 (10.6–426.5) μM Se/M CREAT, respectively, whereas, for the patients, it was 1.246 (0.53–2.45) μM, 0.39 (0.05–1.90) μM, and 75.1 (4.9–656.2) μM Se/M CREAT, respectively. Additionally, the patients were separated into three subgroups according to the severity of their disease state as judged by NYHA procedure, and were then compared to the control group. Only group 4 (the most severe state of the disease) had a significantly lower concentration of urinary Se than the control group. However, the difference became nonsignificant when normalized for CREAT levels. There was no significant difference in the plasma Se levels between the controls and any of the patient groups. As the plasma Se in the control group and in the DCM patients both fell on the low end of the “normal” range, with the patients being marginally lower than the controls, there is no firm evidence from this study to suggest that Se is related to the high incidence rate of DCM found in Saudi Arabia.

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Raines, D.A., Kimsara, A.J., Fawzy, M.E. et al. Plasma and urinary selenium in Saudi Arabian patients with dilated cardiomyopathy. Biol Trace Elem Res 69, 59–68 (1999). https://doi.org/10.1007/BF02783915

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  • DOI: https://doi.org/10.1007/BF02783915

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