HOME >> MEDICINE >> NEWS
Diagnosis of prions in patients should utilize novel strategy, team says

ensitivity of the CDI suggests that CDI-like tests could also prove useful for diagnosing other neurodegenerative diseases, such as Alzheimer's disease, Parkinsons's disease and fronto-temporal dementias, all of which, like prion diseases, involve various forms of protein misprocessing. These diseases currently are diagnosed by neuropathological analysis and immunohistochemistry.

"Whether immunohistochemistry underestimates the incidence of one or more of these common neurodegenerative diseases is unknown, but the CDI could shed light on these diseases," says co-author Bruce Miller, MD, UCSF A.W. and Mary Margaret Clausen Distinguished Professor of Neurology and director of the UCSF Memory and Aging Center.

The finding will be printed on-line and in print on March 1, 2005 in Proceedings of the National Academy of Sciences.

The study brings into high relief the different detection strategies of immunohistochemistry and the CDI, both of which involve revealing the presence of prions, known as PrPsc, by applying antibodies to brain tissue.

Standard immunohistochemistry, developed in the DeArmond lab 20 years ago, involves using an enzyme known as a protease, or a combination of harsh acid and high temperature treatment, to destroy normal prion protein (PrPC), which is ubiquitous in brain tissue. Once this occurs, scientists apply fluorescently lit antibodies that react with residues of the relatively resistant abnormal prion protein (PrPSc), thereby highlighting it.

The limitation of this technique is that scientists have since learned that there is a large part of the abnormal prion protein that is protease sensitive, and that portion escapes detection by the standard technique. Thus, this traditional method underestimates the level of PrPSc in tissue.

The CDI addresses this limitation by revealing the region of PrPSc that is exposed in the normal PrPC but is buried in infectious PrPSc, using high affinity, newly
'"/>

Contact: Jennifer O'Brien
jobrien@pubaff.ucsf.edu
415-476-2557
University of California - San Francisco
21-Feb-2005


Page: 1 2 3 4

Related medicine news :

1. Diagnosis: mismanagement
2. Cedars-Sinai Medical Centers Prenatal Program Pushes the Frontiers of Diagnosis From the Second Trimester Into the First
3. New Survey Finds Physicians Seek More Clarity In MS Diagnosis And Management
4. New study shows how mad cow prions hitch a ride into intestine
5. Hormonal treatment improves survival in high-risk prostate cancer patients
6. Study finds that coordinating care of chronically ill patients does not increase liability
7. Mouse model reveals potential way to reduce cardiac deaths in kidney patients
8. Optical technique identifies vulnerable plaques in cardiac patients
9. NHS target driven culture is failing patients
10. Cardiac deaths peak in sleep hours for patients with sleep apnea
11. Chronic fatigue patients show lower response to placebos

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/24/2016)... ... 24, 2016 , ... The Pulmonary Hypertension Association (PHA) learned ... receive two significant new grants to support its work to advance research and ... by recognizing patients, medical professionals and scientists for their work in fighting pulmonary ...
(Date:6/24/2016)... CA (PRWEB) , ... June 24, 2016 , ... ... is now offering micro-osteoperforation for accelerated orthodontic treatment. Dr. Cheng has extensive experience ... Damon brackets , AcceleDent, and accelerated osteogenic orthodontics. , Micro-osteoperforation is ...
(Date:6/24/2016)... ... June 24, 2016 , ... Topical BioMedics, Inc, makers of Topricin and MyPainAway Pain Relief Products, ... minimum wage raise to $12 an hour by 2020 and then adjusting it yearly to ... value of the minimum wage, assure the wage floor does not erode again, and make ...
(Date:6/24/2016)... ... June 24, 2016 , ... EB Medicine presented its first-ever ... Medicine conference in Ponte Vedra Beach, FL. The awards honor the outstanding work ... Practice and Pediatric Emergency Medicine Practice. , “With this award, we recognize ...
(Date:6/24/2016)... ... June 24, 2016 , ... Puradigm® & Innovative ... has initiated cultivation and processing operations at its production facility, and opened its ... Puradigm is the manufacturer of a complete system of proactive air and surface ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 Any dentist who has ... of the current process. Many of them do not even ... technical difficulties and high laboratory costs involved. And those who ... it at such a high cost that the majority of ... Dr. Parsa Zadeh , founder of Dental Evolutions ...
(Date:6/23/2016)... INDIANAPOLIS , June 23, 2016 Roche ... received 510(k) clearance for its Elecsys BRAHMS PCT (procalcitonin) ... severe sepsis or septic shock. With this clearance, Roche ... provide a fully integrated solution for sepsis risk assessment ... associated with bacterial infection and PCT levels in blood ...
(Date:6/23/2016)... 2016 Research and Markets has announced ... report to their offering. ... a favourable commercial environment for MedImmune to enter. The US ... will serve to drive considerable growth for effective anti-influenza medications. ... cap sales considerably, but development is still in its infancy. ...
Breaking Medicine Technology:
Cached News: