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  • Title: Iron hypothesis and coronary artery disease in geriatric patients.
    Author: Mokhtari H, Bagheri B, Rasouli M.
    Journal: Arch Physiol Biochem; 2020 Feb; 126(1):17-22. PubMed ID: 30032657.
    Abstract:
    Context and aims: Iron is a pro-oxidant factor in the pathogenesis of CAD. The association of body iron status was investigated relative to the occurrence and severity of CAD.Design and methods: The subjects consisted of 110 males and 115 females who were classified as either a CAD case or a control according to the results of coronary angiography.Results: A new parameter, the "serum free iron index," was defined as the ratio of serum iron to UIBC. The level of ferritin showed significant increase [97.2 (67.0-171.2) µg/L vs. 85.6 (52.5-129.4), p = .034], whereas serum total iron, free iron index, transferrin, UIBC and iron saturation were unchanged in CAD patients relative to control group. Among the indices of body iron only serum ferritin had significant association with the likelihood (OR of 1.004 (1.000-1.007), p = .04) and severity of CAD [χ2(3)= 7.99, p = .01], but the correlation was lessened in the presence of classical risk factors. Serum ferritin had also the highest and significant efficiency to predict CAD (AUC = 0.61, p = .020).Conclusions: Serum ferritin as a marker of intracellular iron has significant association with CAD; nevertheless, the correlation is not independent. Since iron deficiency is prevalent in elderly patients, iron hypothesis needs to expand to the both sides of iron deficiency and toxicity.
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