title: Oxidative injury as contributory factor for red cells storage lesion during twenty eight days of storage.
abstract: BACKGROUND
  Storage of red blood cells at 4 °C is associated with deleterious metabolic and biochemical changes, collectively referred to as "storage lesions". Lipid peroxidation of the red cell membrane leading to lysis contributes to these storage lesions. The aim of the present study was to investigate oxidative injury to red cells during storage for 28 days and its correlation with markers of red cell membrane damage.
  
  
  METHODS
  Samples from 30 units of red blood cells stored at 4 °C for 28 days were withdrawn aseptically on day 0, day 14 and day 28 of storage. Markers of membrane damage including plasma haemoglobin, plasma potassium and lactate dehydrogenase (LDH) concentrations and markers of oxidative injury such as malondialdehyde (MDA) levels, haemoglobin oxidation and osmotic fragility were studied in all samples.
  
  
  RESULTS
  Statistically significant (p<0.001) increases in the mean values of plasma haemoglobin, plasma potassium, LDH and markers of oxidative injury such as MDA and haemoglobin oxidation were observed over the storage period of 28 days. Direct correlations of MDA and haemoglobin oxidation with membrane damage, as reflected by plasma haemoglobin concentration, were observed.
  
  
  CONCLUSIONS
  Oxidative injury to red blood cells during storage leads to membrane damage and lysis. The role of antioxidants in the prevention of this deleterious effect of storage warrants investigation.
authors: Department of Transfusion Medicine, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India. rkcchaud@sgpgi.ac.in
authors: Rajendra
authors: R
authors: Chaudhary
authors: Rahul
authors: R
authors: Katharia
mesh_terms: D015415:Biomarkers / Q000032:analysis / Q000378:metabolism; D001793:Blood Preservation; D004910:Erythrocyte Membrane; D006454:Hemoglobins / Q000032:analysis* / Q000378:metabolism; D006801:Humans; D006836:Hydro-Lyases; D015227:Lipid Peroxidation; D008315:Malondialdehyde / Q000032:analysis* / Q000378:metabolism; D009996:Osmotic Fragility; D011188:Potassium / Q000032:analysis* / Q000378:metabolism; D013997:Time Factors
chemical_list: D015415:Biomarkers; D006454:Hemoglobins; D008315:Malondialdehyde; D006836:Hydro-Lyases; C045581:lactate dehydratase; D011188:Potassium