TY - JOUR T1 - Altered glycosylation of acetylcholinesterase in lumbar cerebrospinal fluid of patients with Alzheimer's disease JF - Journal of Neurology, Neurosurgery & Psychiatry JO - J Neurol Neurosurg Psychiatry SP - 664 LP - 667 DO - 10.1136/jnnp.69.5.664 VL - 69 IS - 5 AU - J Sáez-Valero AU - M S Barquero AU - A Marcos AU - C A McLean AU - D H Small Y1 - 2000/11/01 UR - http://jnnp.bmj.com/content/69/5/664.abstract N2 - As clinical diagnosis of Alzheimer's disease is only 80%–90% accurate, there is a need to identify biochemical markers of Alzheimer's disease. Previous studies have shown an abnormality in the glycosylation of acetylcholinesterase (AChE) in the CSF collected postmortem from patients with Alzheimer's disease. This abnormality was very specific for Alzheimer's disease, as it was not detected in other illnesses causing dementia. We report here that the glycosylation of AChE is also altered in lumbar CSF collected antemortem. The altered glycosylation was due to increased concentrations of a minor AChE isoform that does not bind to concanavalin A (Con A). Glycosylation of AChE may eventually be of diagnostic value, especially when used in combination with other CSF markers. ER -