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International Journal of Alzheimer’s Disease
Volume 2010, Article ID 978182, 7 pages
http://dx.doi.org/10.4061/2010/978182
Review Article

Biological Markers and Alzheimer Disease: A Canadian Perspective

Department of Neurology and Neurosurgery, Centre for Neurotranslational Research, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, 3755 Cote St. Catherine Rd. Montreal, QC, H3T 1E2, Canada

Received 16 February 2010; Accepted 11 July 2010

Academic Editor: Lucilla Parnetti

Copyright © 2010 Hyman M. Schipper. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Decreased 𝛽 -amyloid1-42 and increased phospho-tau protein levels in the cerebrospinal fluid (CSF) are currently the most accurate chemical neurodiagnostics of sporadic Alzheimer disease (AD). A report (2007) of the Third Canadian Consensus Conference on the Diagnosis and Treatment of Dementia (2006) recommended that biological markers should not be currently requisitioned by primary care physicians in the routine investigation of subjects with memory complaints. Consideration for such testing should prompt patient referral to a specialist engaged in dementia evaluations or a Memory Clinic. The specialist should consider having CSF biomarkers ( 𝛽 -amyloid1-42 and phospho-tau) measured at a reputable facility in restricted cases presenting with atypical features and diagnostic confusion, but not as a routine procedure in all individuals with typical sporadic AD phenotypes. We submit that developments in the field of AD biomarker discovery since publication of the 3rd CCCDTD consensus data do not warrant revision of the 2007 recommendations.