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High erythropoietin levels indicate increased risk of death

Date:
October 28, 2010
Source:
Canadian Medical Association Journal
Summary:
High erythropoietin levels in people over age 85 indicate a higher risk of death, according to a new study.
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High erythropoietin levels in people over age 85 indicate a higher risk of death, according to a study published in the Canadian Medical Association Journal (CMAJ).

Erythropoietin is a hormone created in the kidneys to stimulate production of red blood cells. Production is triggered by impaired oxygen delivery to the kidney because of anemia or low blood oxygen levels. In patients with chronic heart failure, high erythropoietin levels predict higher mortality.

The researchers looked at data from the Leiden 85-plus Study which involved 428 people aged 85 years or older in Leiden, the Netherlands.

They found that "high erythropoietin levels were associated with increased mortality, independent of creatinine clearance, hemoglobin level, the presence of comorbidity, smoking and circulating markers of inflammation," writes Wendy den Elzen, Leiden University Medical Centre, Leiden, the Netherlands, with coauthors.

"We showed that elevated erythropoietin has important prognostic value for mortality in the general population of older individuals," write the authors. "However, we do not know whether high erythropoietin, apart from being a risk marker of increased mortality in old age, is also a causal risk factor of increased mortality."

They call for further studies to look into the underlying biological mechanism and to understand the clinical implications of a high erythropoietin level in older people.


Story Source:

The above story is based on materials provided by Canadian Medical Association Journal. Note: Materials may be edited for content and length.


Journal Reference:

  1. den Elzen, Wendy P.J., Willems, Jorien M., Westendorp, Rudi G.J., de Craen, Anton J.M., Blauw, Gerard Jan, Ferrucci, Luigi, Assendelft, Willem J.J., Gussekloo, Jacobijn. Effect of erythropoietin levels on mortality in old age: the Leiden 85-plus Study. Canadian Medical Association Journal, 2010; DOI: 10.1503/cmaj.100347

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Canadian Medical Association Journal. "High erythropoietin levels indicate increased risk of death." ScienceDaily. ScienceDaily, 28 October 2010. <www.sciencedaily.com/releases/2010/10/101025123852.htm>.
Canadian Medical Association Journal. (2010, October 28). High erythropoietin levels indicate increased risk of death. ScienceDaily. Retrieved May 24, 2015 from www.sciencedaily.com/releases/2010/10/101025123852.htm
Canadian Medical Association Journal. "High erythropoietin levels indicate increased risk of death." ScienceDaily. www.sciencedaily.com/releases/2010/10/101025123852.htm (accessed May 24, 2015).

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