Current Alzheimer Research

Debomoy K. Lahiri  
Department of Psychiatry, Indiana University School of Medicine
Neuroscience Research Center
Indianapolis, IN 46202
USA

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A Possible New Diagnostic Biomarker in Early Diagnosis of Alzheimers Disease

Author(s): Felix Kork, Jan Holthues, Rainer Hellweg, Vera Jankowski, Martin Tepel, Renate Ohring, Isabella Heuser, Jeffrey Bierbrauer, Oliver Peters, Peter Schlattmann, Walter Zidek, Joachim Jankowski.

Abstract:

Early diagnosis in patients with Alzheimers disease (AD) is of great importance since only a sufficient treatment in early stages of this disease helps to keep patients in an autonomous state for as long as possible. Until now, there is no single diagnostic biomarker for AD derived from material routinely obtained. In this study, proton nuclear magnetic resonance (1H-NMR) spectra of the cerebrospinal fluid (CSF) of AD patients were compared with 1H-NMR spectra of the CSF of healthy control subjects using a metabonomic approach. The 1H-NMR spectra of CSF of AD patients showed specific multipletts at 2.15 ppm and 2.45 ppm, which could not be detected in the majority (59.3% and 70.4%, respectively) of healthy control subjects (positive likelihood ratio (+LR) 2.33, 95% CI [1.46, 3.72], p < 0.01; +LR 3.22, 95% CI [1.78, 5.78], p < 0.01). Moreover, CSF 1H-NMR spectra of AD patients showed specific resonances at 7.03 ppm (+LR 3.38, 95% CI [1.60, 7.14], p < 0.05), 7.19 ppm (+LR 2.89, 95% CI [1.46, 5.74], p < 0.05), 7.43 ppm (+LR 3.15, 95% CI [1.47, 6.75], p < 0.05), and at 7.91 ppm (+LR 3.38, 95% CI [1.60, 7.14], p < 0.01). CSF 1H-NMR spectroscopy is obviously a capable method for detection and quantification of substances in the CSF of AD patients even without the knowledge of molecular structures. These substances can be used as a biomarker in the early diagnosis of AD. We assume that this biomarker will simplify the diagnosis of AD, especially in early stages of the disease.

Keywords: Alzheimer disease, NMR spectroscopy, diagnostic marker, biomarker, cerebrospinal fluid, metabonomics

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Article Details

VOLUME: 6
ISSUE: 6
Page: [519 - 524]
Pages: 6
DOI: 10.2174/156720509790147160
Price: $58