Navigation Links
Range of diagnostic spinal fluid tests needed to differentiate concurrent brain diseases
Date:4/20/2012

NEW ORLEANS Teasing out the exact type or types of dementia someone suffers from is no easy task; neurodegenerative brain diseases share common pathology and often co-occur. Researchers from the Perelman School of Medicine at the University of Pennsylvania are continuing efforts to differentiate diseases, such as Alzheimer's disease (AD) from frontotemporal lobar degeneration (FTLD), as FTLD is often clinically difficult to distinguish from atypical presentations of AD.

In a series of studies being presented at the American Academy of Neurology's 64th Annual Meeting in New Orleans, Penn researchers demonstrated that, while tests created for AD are effectively diagnosing the condition when it's clear cut, additional tests are needed to address the many cases with mixed pathology.

"With the emergence of disease-modifying treatments for AD and other neurodegenerative diseases, it will be of utmost importance to accurately identify the underlying neuropathology in patients," said senior author John Q. Trojanowski, MD, PhD, professor of Pathology and Laboratory Medicine and co-director of the Center for Neurodegenerative Disease Research at Penn.

In one study, the Penn team compared results of a test looking at levels of tau and amyloid beta (Aβ) in the spinal fluid, using two different types of analytical platforms. They determined that values from the two platforms could effectively be transformed into equivalent units, and these values accurately distinguished AD from FTLD. A cutoff of 0.34 for the t-tau:Aβ1-42 ratio had 90 - 100 percent sensitivity and 91-96.7 percent specificity to differentiate FTLD cases, respectively.

In another study, the team looked at patient cases with more than one underlying neurodegenerative disease and compared the accuracy of the biomarkers using clinical and neuropathological diagnosis. They determined that cerebral spinal fluid (CSF) Aβ and tau assays provided a valid diagnosis of AD but, in mixed pathology cases where Alzheimer's was present along with other diseases (confirmed by autopsy), the testing strategies classified the diagnosis as AD alone.

"We need to develop better CSF diagnostic panels for the early diagnosis of neurodegenerative dementias, including those due to mixed neurodegenerative disease pathologies that commonly co-occur with Alzheimer's," said senior author Murray Grossman, MD, professor of Neurology and director of the Penn FTLD Center.

The two posters will be presented during the American Academy of Neurology's 64th Annual Meeting:

Monday, April 23, 2012 10:00 AM
[IN3-1.010] Improving Diagnostic Accuracy for Dementia: CSF Biomarker Cutoffs Based on Clinical and Neuropathological Criteria
Jon B. Toledo, Philadelphia, PA, Johannes Brettschneider, Ulm, PA, Murray Grossman, Steven Arnold, Philadelphia, PA, William Hu, Atlanta, GA, Sharon X. Xie, Virginia M. Y. Lee, Leslie Shaw, John Trojanowski, Philadelphia, PA

Tuesday, April 24, 2012 7:30 AM
[P02.055] Comparison of Cerebrospinal Fluid Levels of Tau and Aβ1-42 in Alzheimer's Disease and Frontotemporal Degeneration Using Two Analytical Platforms
David Irwin, Corey T. McMillan, Jon B. Toledo, Steven Arnold, Leslie Shaw, Li-San Wang, Virginia Lee, John Trojanowski, Murray Grossman, Philadelphia, PA


'/>"/>

Contact: Kim Menard
kim.menard@uphs.upenn.edu
215-200-2312
University of Pennsylvania School of Medicine
Source:Eurekalert

Related medicine news :

1. Bluestar Silicones Launches a New Range of Silbione(R) TCS 7560 & 7561 Elastomers for Lingerie, Support Stockings and Medical Textile Applications
2. Orange Healthcare Joins the mHealth Alliance to Develop Mobile Health Solutions in West Africa
3. Visual Cues that Improve Walking for People with Movement Disorders - Study Shows Small Change in Arrangement Can Make a Big Difference in Improvement Gained
4. Insightra Medical Inc Gains CE Mark on the Freedom(TM) Inguinal Hernia Product Range
5. Rev. Michel Faulkner Seeks to Retire Charlie Rangel from New York's 15th Congressional Seat
6. New Heart Health Booster Supports Blood Pressure in the Normal Range*
7. Good Bye, Snake Oil! Grab your Orange Juice and Daily Virus Viper™ to Safeguard Against Micro-nutrient Deficiencies
8. Khanna Institute to Offer Newly FDA Approved Expanded Range of Intacs for Keratoconus
9. Strange Artifact Identified as Ancient Anti-Snoring Device
10. HealthCare Partners Medical Group Expands to Orange County. HealthCare Partners and Talbert Medical Group Join Forces
11. Dynowatt Offers Facebook Fans a Chance to See the Rangers and Astros Play for Texas Bragging Rights
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/21/2017)... ... January 21, 2017 , ... ... Dianne Travis-Teague, the electrifying line-up of events for its annual meeting “Coming Home ... and community. “Coming Home 2017” will be held on Friday January 27 ...
(Date:1/20/2017)... (PRWEB) , ... January 20, 2017 , ... Spectrum Aquatics Launches New ADA Portable Motion ... deck space. Since the lift is mounted on wheels, it can be wheeled out of ... down kit, to fasten to the deck. "We have transformed the feedback from customers into ...
(Date:1/20/2017)... ... January 20, 2017 , ... Bionic Sports Nutrition LLC, an American ... announced it had a successful January ECRM Trade Show in Hilton Head, SC. ... which allows it to provide its products to all clients at reasonable prices. At ...
(Date:1/20/2017)... (PRWEB) , ... January 20, 2017 , ... "TransFlare 4K ... use inside of Final Cut Pro X," said Christina Austin - CEO of Pixel ... RED Dragon. Utilizing the Dragon Sensor,TransFlare 4K Mystique lens flare and light leak transitions ...
(Date:1/20/2017)... ... , ... “I Forgive You”: a fine examination of how God handles sin, including how ... published author, Stephen Miller, who, for over ten long years has been waiting to release ... Trinidad and Tobago, he has been serving the Lord for over twenty years, and he ...
Breaking Medicine News(10 mins):
(Date:1/20/2017)... DUBLIN , Jan 20, 2017 ... "Global Hearing Aids Market (by Devices, Implant Types, OTC Amplifiers, ... report to their offering. ... Global Hearing Aids Market Sales Volume, ... of the fast-evolving, high-growth hearing aid industry. The ...
(Date:1/20/2017)... Stock-Callers.com today evaluates the following Drug Manufacturers equities: ... A/S (NYSE: NVO ), Sucampo Pharmaceuticals Inc. (NASDAQ: ... PTX ). These stocks belong to the Healthcare ... finishing near its session lows. As per a NASDAQ report, ... of health care companies in the S&P 500 also were ...
(Date:1/20/2017)... 2017  Palladian Health, a leading provider of ... of an opioid management program which assists physicians ... helps stem the growing tide of dependence on ... chronic non-cancer pain (back pain, neck pain, and ... of evidence regarding long-term effectiveness. The ...
Breaking Medicine Technology: