Corporate Banner
Satellite Banner
Biomolecular Screening
Scientific Community
 
Become a Member | Sign in
Home>News>This Article
  News
Return

Comprehensive Parkinson's Biomarker Test Has Prognostic and Diagnostic Value

Published: Monday, September 02, 2013
Last Updated: Monday, September 02, 2013
Bookmark and Share
First biomarker results reported from the Parkinson’s Progression Markers Initiative (PPMI).

Results show that a comprehensive test of protein biomarkers in spinal fluid have prognostic and diagnostic value in early stages of Parkinson’s disease.

Compared to healthy adults, the study found that people with early Parkinson’s had lower levels of amyloid beta, tau and alpha synuclein in their spinal fluid. In addition, those with lower concentrations of tau and alpha synuclein had greater motor dysfunction. And early Parkinson’s patients with low levels of amyloid beta and tau were more likely to be classified as having the postural instability-gait disturbance- dominant (PIGD) motor type of disease, where falling, freezing, and walking difficulty are common.

“Biomarkers for Parkinson’s disease such as these could help us diagnose patients earlier, and we’ve now shown that the simultaneous measurement of a variety of neurodegenerative disease proteins is valuable,” said study senior author Leslie M. Shaw, PhD, professor of Pathology and Laboratory Medicine at Penn Medicine. Dr. Shaw and John Q. Trojanowski, MD, PhD, director of the Penn Udall Center for Parkinson’s Research, are co-leaders of the Bioanalytics Core for the Parkinson’s Progression Markers Initiative, an international observational clinical study sponsored by The Michael J. Fox Foundation for Parkinson's Research.

The team evaluated spinal fluid collected from baseline visits of the first 102 PPMI participants - 63 with early, untreated Parkinson’s disease and 39 healthy controls. The spinal fluid was evaluated for levels of five biomarkers: amyloid beta, total tau, phosphorylated tau, alpha synuclein and the ratio of total tau to amyloid beta. Spinal fluid measures of amyloid and tau are currently used in research to distinguish Alzheimer’s disease from other neurodegenerative diseases. In contrast to Alzheimer’s, where tau levels are higher than healthy controls, the study found that early Parkinson’s patients had lower levels of tau than healthy controls. One reason, researchers suggest, could be that interactions between tau and alpha synuclein may limit the release of tau into the cerebrospinal fluid of Parkinson’s patients.

“Through PPMI, we are hoping to identify subgroups of Parkinson’s patients whose disease is likely to progress at a different rate, as early as possible,” said Dr. Trojanowski. “Early prediction is critical, for both motor and dementia symptoms.”

The Parkinson’s PIGD motor subtype has been associated with a more rapid cognitive decline as well as greater functional disability. Using the biomarker test, this initial study found that levels of all spinal fluid biomarkers were lower in the PIGD motor subtype than other types of PD as well as healthy controls. In addition, amyloid beta and phosphorylated tau were at lower levels in the PIGD motor subtype, but were no different in tremor or indeterminate subtypes compared to normal controls.


Further Information

Join For Free

Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 3,500+ scientific posters on ePosters
  • More than 5,000+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

Single Molecule Detection of Contaminants, Explosives or Diseases
A technique that combines the ultrasensitivity of surface-enhanced Raman scattering (SERS) with a slippery surface invented by Penn State researchers will make it feasible to detect single molecules of a number of chemical and biological species from gaseous, liquid or solid samples.
Tuesday, January 12, 2016
Scientific News
Mass Spec Technology Drives Innovation Across the Biopharma Workflow
With greater resolving power, analytical speed, and accuracy, new mass spectrometry technology and techniques are infiltrating the biopharmaceuticals workflow.
One Step Closer to Precision Medicine for Chronic Lung Disease Sufferers
A study led by University of North Carolina at Chapel Hill, and National Jewish Health, has provided evidence of links between SNPs and known COPD blood protein biomarkers.
Identified Compound Stops Cells Making Ribosomes
From study in yeast, researchers have identifed a compound that interferes with the assembly of ribosomes.
CES Score May Predict Response to Cancer Treatment
Researchers identify new type of biomarker that helps predict prognosis and response to several types of cancer treatment.
Treating Sepsis with Marine Mitochondria
Mitochondrial alternative oxidase from a marine animal combats bacterial sepsis.
New Therapeutic Target for Crohn’s Disease
A promising new target for drugs that treat IBD has been identified along with a possible biomarker for IBD severity.
Analysing 10,000 Cells Simultaneously
New techniquethat traps 10,000 cells on a single chip has potential for cancer screening for individuals.
Researchers Find Fungus-Fighting Compound
A compound has been identifed that blocks growth of a fungus responsible for lung infections and allergic reactions.
Peer Reviewed Study Demonstrates Mass Spec Technique
The peer reviewed study demonstrates MS workflow, TMTCalibrator workflow, which dramatically enhances detection of key early stage Alzheimer’s biomarkers.
Enhancing Antibiotics to Defeat Resistant Bacteria
Scientists enhance ability of antibiotics to defeat resistant types of bacteria using molecules called PPMOs
SELECTBIO

Skyscraper Banner
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
3,500+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
5,000+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FOR FREE!