title: Free oxygen radicals in acute renal failure.
abstract: OBJECTIVE
  To assess the levels of free oxygen radicals in acute renal failure and their predictive value in clinical outcome.
  
  
  METHODS
  Prospective.
  
  
  METHODS
  Intensive care unit.
  
  
  METHODS
  Study was conducted in 50 children (25 with acute renal failure and 25 age and sex matched controls). Blood urea, serum creatinine, serum protein, uric acid and free oxygen radical markers were estimated in both groups. Superoxide dismutase (SOD), glutathione peroxidase(GPx) and lipid peroxide (LPO) were estimated in blood by standard techniques.
  
  
  RESULTS
  Hemolytic uremic syndrome (HUS) was a major cause of acute renal failure (52%), rest were due to acute glomerulonephritis (AGN), septicemia and renal venous thrombosis. In the renal failure group 56% of the patients were dialyzed (peritoneal) and the mortality was 28% (7/25). The levels of SOD, GPx and LPO were significantly raised in renal failure group. Higher values of LPO, SOD and GPx were documented in subjects who expired. The most important independent variable for predicting clinical outcome was LPO with a sensitivity of 89.4%, specificity of 93%, positive predictive value of 95%.
  
  
  CONCLUSIONS
  Levels of free oxygen radicals (SOD, LPO and GPx) are raised in acute renal failure and these enzymes can be used as marker of renal injury. LPO levels are highly sensitivity and specific for predicting the clinical outcome
authors.affiliation: Department of Pediatric Intensive Care, Kalawati Saran Children's Hospital and Lady Hardinge Medical College, Bangla Sahib Marg, New Delhi 110 001, India. dubeyn.k@ndfdel.in
authors.forename: N K
authors.initials: NK
authors.lastname: Dubey
authors.forename: P
authors.initials: P
authors.lastname: Yadav
authors.forename: A K
authors.initials: AK
authors.lastname: Dutta
authors.forename: V
authors.initials: V
authors.lastname: Kumar
authors.forename: G N
authors.initials: GN
authors.lastname: Ray
authors.forename: S
authors.initials: S
authors.lastname: Batra
mesh_terms: D058186:Acute Kidney Injury / Q000097:blood / Q000175:diagnosis* / Q000401:mortality; D015415:Biomarkers; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D005260:Female; D005609:Free Radicals / Q000097:blood*; D006801:Humans; D007194:India / Q000453:epidemiology; D007223:Infant; D008054:Lipid Peroxides / Q000097:blood*; D008297:Male; D015999:Multivariate Analysis; D010088:Oxidoreductases / Q000097:blood*; D011237:Predictive Value of Tests; D015996:Survival Rate
chemical_list: D015415:Biomarkers; D005609:Free Radicals; D008054:Lipid Peroxides; D010088:Oxidoreductases