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Iron-deficiency anaemia enhances red blood cell oxidative stress |
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| Authors: | Enika Nagababu Seema Gulyani Christopher J Earley Roy G Cutler Mark P Mattson |
| Institution: | 1. Molecular Dynamics Section, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA;2. Department of Neurology, Johns Hopkins Bayview Medical Center, Baltimore, MD, USA;3. Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA |
| Abstract: | Oxidative stress associated with iron deficiency anaemia in a murine model was studied feeding an iron-deficient diet. Anaemia was monitored by a decrease in hematocrit and haemoglobin. For the 9 week study an increase in total iron binding capacity was also demonstrated. Anaemia resulted in an increase in red blood cells (RBC) oxidative stress as indicated by increased levels of fluorescent heme degradation products (1.24-fold after 5 weeks; 2.1-fold after 9 weeks). The increase in oxidative stress was further confirmed by elevated levels of methemoglobin for mice fed an iron-deficient diet. Increased haemoglobin autoxidation and subsequent generation of ROS can account for the shorter RBC lifespan and other pathological changes associated with iron-deficiency anaemia. |
| Keywords: | Anaemia red blood cells oxidative stress heme degradation fluorescence |