Features | Partner Sites | Information | LinkXpress
Sign In

Spinal Fluid Marker Strongly Predicts Mental Decline

By Labmedica International staff writers
Posted on 19 Mar 2012
A novel marker of Alzheimer's disease (AD) can predict how rapidly a patient's memory and other mental abilities will decline after the disorder is diagnosed.

Higher levels of the marker, visinin-like protein 1 (VILIP-1), in the cerebrospinal fluid (CSF) of Alzheimer's patients have been linked to a more rapid mental decline in the years that followed.

Scientists at Washington University School of Medicine (St. Louis, MO, USA) studied 60 individuals with a clinical diagnosis of very mild or mild AD and measuring baseline CSF protein levels of VILIP-1, Tau, phosphorylated Tau-181 (p-tau181), and amyloid-beta 1–42 (Aβ42), and these were followed longitudinally for an average of 2.6 years.

Baseline CSF VILIP-1 and VILIP-1/Aβ42 levels predicted rates of future decline in the clinical dementia rating and global composite scores over the follow-up period. Individuals with CSF VILIP-1 equal to or greater than 560 pg/mL progressed much more rapidly than individuals with lower values. CSF tau, p-tau181, tau/ Aβ42, and p-tau181/ Aβ42 also predicted more rapid cognitive decline overtime. Scientists think VILIP-1 serves as a calcium sensor in brain cells. It is released into the cerebrospinal fluid when the cells are injured. CSF samples were analyzed for total tau, p-tau181, Aβ42 using Innotest, (Innogenetics, Ghent, Belgium), and CSF Aβ40 by an enzyme-linked immunosorbent assay. CSF samples were analyzed for VILIP-1 by Erenna, a microparticle-based immunoassay (Singulex, CA, USA).

Rawan Tarawneh, MD, the lead author of the study, said "VILIP-1 appears to be a strong indicator of ongoing injury to brain cells as a result of Alzheimer's disease. That could be very useful in predicting the course of the disease and in evaluating new treatments in clinical trials. These results are intriguing, but we need a larger study to fully understand how the insights provided by VILIP-1 compare to those we can gain from other markers.” The study was published online on February 22, 2012, in the journal Neurology.

Related Links:
Washington University School of Medicine

Dubai Bio Expo-2015



view channel

Biomarkers Identify Pregnant Women with Lupus or APL at Risk for Adverse Outcomes

A consortium of researchers has found that testing blood of pregnant women with systemic lupus erythematosus (SLE) or antiphospholipid antibodies (APL) for certain biomarkers can identify and stratify low- vs. high-risk patients early in pregnancy. "Given that over 20% of pregnant women with lupus APL experience adverse... Read more

Industry News

view channel

Diagnostic Company Acquisition to Ease Market Entry and Shorten Development Time for New Tests

Two North American manufacturers of rapid diagnostic tests are combining in order to pool their products for rapid entry into the diagnostic product market and to boost development of new tests. NOWDiagnostics Inc. (Springdale, AR, USA) recently completed the acquisition of ZBx Corporation (Toronto, Canada).... Read more
Copyright © 2000-2015 Globetech Media. All rights reserved.