title: Hydroxyoctadecadienoic acid and oxidatively modified peroxiredoxins in the blood of Alzheimer's disease patients and their potential as biomarkers.
abstract: Alzheimer's disease (AD) is a neurological disorder that has a considerable impact on the health of the elderly. Although oxidative stress has been implicated in the early stage of this disease, its detailed pathogenesis and therapeutic targets remain unknown. The diagnosis, particularly at the early stage, is important. In the present study, the levels of potential biomarkers such as total hydroxyoctadecadienoic acid (tHODE) and oxidatively modified peroxiredoxin (oxPrx)-2 and oxPrx-6 in plasma and/or erythrocytes were determined by a GC-MS apparatus and by two-dimensional electrophoresis, respectively. It was found that these levels in AD patients were significantly higher than those in the healthy controls. Furthermore, the tHODE levels increased with increasing clinical dementia ratings. Interestingly, vascular dementia patients could be distinguished by the correlation between plasma and erythrocyte tHODE levels or by that of tHODE with oxPrx in erythrocytes. These data further support that oxidative stress is indeed involved in AD and that the correlative measures of tHODE and oxPrx are potential biomarkers for its diagnosis.
authors: Human Stress Signal Research Center (HSSRC), National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan. yoshida-ya@aist.go.jp
authors: Yasukazu
authors: Y
authors: Yoshida
authors: Atsushi
authors: A
authors: Yoshikawa
authors: Tomoya
authors: T
authors: Kinumi
authors: Yoko
authors: Y
authors: Ogawa
authors: Yoshiro
authors: Y
authors: Saito
authors: Kazuyuki
authors: K
authors: Ohara
authors: Hirokazu
authors: H
authors: Yamamoto
authors: Yasuharu
authors: Y
authors: Imai
authors: Etsuo
authors: E
authors: Niki
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000097:blood* / Q000175:diagnosis*; D015415:Biomarkers / Q000097:blood; D015140:Dementia, Vascular / Q000097:blood* / Q000175:diagnosis*; D005231:Fatty Acids, Unsaturated / Q000097:blood*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010084:Oxidation-Reduction; D054464:Peroxiredoxins / Q000097:blood*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D015415:Biomarkers; D005231:Fatty Acids, Unsaturated; C495366:hydroxyoctadecadienoic acid; D054464:Peroxiredoxins