Abstract
Erythropoietin secretion was evaluated in the anaemia of chronic disorders in elderly patients, since it has been shown that this secretion is impaired in adults. We looked for a possible role of inflammatory cytokines: tumor necrosis factor-alpha (TNF alpha) and interleukin-1 beta (IL-1 beta) on erythropoietin production. The influence of nutritional status on the anaemia was also investigated. Erythropoietin secretion was significantly increased in elderly patients with anaemia of chronic disorders (ACD) and inversely correlated with haemoglobin concentrations in infectious and inflammatory diseases. Plasma TNF alpha levels were significantly enhanced only in cancerous patients, but no correlation could be established between TNF alpha and erythropoietin or haemoglobin. No noticeable increase of IL-1 beta levels was observed in ACD. These findings suggest that systemic TNF alpha or IL-1 beta are not involved in the erythropoietin response to ACD. Albumin levels were decreased in anaemic patients. Further investigations of the effects of a nutritional supplementation in elderly patients with ACD may be of interest.
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