title: Clinical importance of erythrocyte malondialdehyde levels as a marker for cognitive deterioration in patients with dementia of Alzheimer type: a repeated study in 5-year interval.
abstract: OBJECTIVE
  The aim of the present study was to determine the effects of aging and dementia of the Alzheimer type (DAT) on lipid peroxidation and antioxidant enzyme activities.
  
  
  METHODS
  Twenty-six patients with DAT were included in the present study. Group I: 26 patients diagnosed as DAT and studied 5 yr ago. Group II: This group consisted of the same patients as Group I at the present time. Activities of CuZn superoxide dismutase (CuZn SOD) and glutathione peroxidase (GSH-Px) and malondialdehyde (MDA) concentrations of these 26 subjects were measured and mini mental state examination (MMSE), brief psychiatric rating scale (BPRS), Hamilton depression rating scale (HDRS) were applied.
  
  
  RESULTS
  The results revealed that 26 dementia patients had worsened cognitive symptoms and significantly increased CuZn SOD and MDA levels and decreased GSH-Px levels after 5 yr. Significant correlation was found between age and CuZn SOD (r: +0.406, p: 0.034), and between MMSE and MDA (r: -0.411, p: 0.032).
  
  
  CONCLUSIONS
  We can conclude that MDA, CuZn SOD, and GSH-Px were significantly affected in the patients with Alzheimer disease. The most striking finding of this study is the significant correlation between MMSE and MDA in patients with DAT.
authors: Suleyman Demirel University, School of Medicine, Department of Biochemistry and Clinical Biochemistry, Isparta, Turkey. ndelibas@hotmail.com
authors: Namik
authors: N
authors: Delibas
authors: Ramazan
authors: R
authors: Ozcankaya
authors: Irfan
authors: I
authors: Altuntas
mesh_terms: D000368:Aged; D000375:Aging / Q000378:metabolism; D000544:Alzheimer Disease / Q000097:blood*; D015415:Biomarkers / Q000032:analysis*; D003072:Cognition Disorders / Q000097:blood*; D004912:Erythrocytes / Q000378:metabolism*; D005260:Female; D005979:Glutathione Peroxidase / Q000378:metabolism*; D006801:Humans; D008297:Male; D008315:Malondialdehyde / Q000378:metabolism*; D013482:Superoxide Dismutase / Q000378:metabolism*
chemical_list: D015415:Biomarkers; D008315:Malondialdehyde; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase