HOME >> BIOLOGY >> NEWS
Key stress protein linked to toxicities responsible for Parkinson's, Alzheimer's

La Jolla, CA Researchers at the Burnham Institute for Medical Research have discovered a mechanistic link between cellular stress caused by free radicals and accumulation of misfolded proteins that lead to nerve cell injury and death in neurodegenerative disorders such as Alzheimer's and Parkinson's Disease. That link is Protein Disulphide Isomerase (PDI), a chaperone protein that is necessary for proper protein folding in times of cellular stress. Published in today's issue of Nature, these findings revealed that in patients with Alzheimer's and Parkinson's Disease, overproduction of free radicals, specifically nitric oxide (NO), causes inhibition of PDI by a reaction called S-nitrosylation, thereby reducing PDI's neuroprotective benefits. This data provides the first molecular link between NO free radicals and protein misfolding, which is currently thought to be a common pathway in the pathogenesis of virtually all neurodegenerative conditions. Such conditions also include ALS (or Lou Gehrig's disease), Huntington's disease, and many others. Understanding the PDI pathway may lead to the development of new therapeutic approaches for these neurodegenerative diseases and other disorders associated with abnormal protein accumulations due to cellular stress.

"To our knowledge, this is the first published evidence of a link between protein misfolding due to enzymatic machinery malfunction found in a number of degenerative diseases and free radical stress in nerve cells," said Stuart A. Lipton, M.D., Ph.D., Professor and Director of the Del E. Webb Center for Neurosciences and Aging at the Burnham Institute and senior author of the study. Dr. Lipton is also a clinical neurologist in La Jolla. "Our data demonstrate a previously unrecognized relationship between NO and protein misfolding in degenerative disorders, showing that PDI can be a target of NO in cellular models of Parkinson's disease and human neurodegenerative disease."

A protein's stru
'"/>

Contact: Nancy Beddingfield
nbeddingfield@burnham.org
858-646-3146
Burnham Institute
24-May-2006


Page: 1 2

Related biology news :

1. Prenatal stress keeps infants, toddlers up at night, study says
2. Isoprene emission from plants -- a volatile answer to heat stress
3. Mild stress in the womb may worsen risk of cerebral palsy
4. A possible mechanistic link between stress and the development of Alzheimer tangles
5. Parkinsons protein protects neurons from stress induced cell death
6. Antibiotic stress, genetic response and altered permeability of E. coli
7. Study shows metabolic strategy of stressed cell
8. Tiny molecule controls stress-induced heart disease
9. New compound prevents alcoholic behavior, relapse in animals by blocking stress response
10. Genes and stressed-out parents lead to shy kids
11. Newborns with respiratory distress potentially have rare genetic disease

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


(Date:8/5/2020)... ... , ... Regenative Labs has received approval from the Centers for Medicare & ... first Wharton’s jelly allografts to be assigned a Q code and be approved for ... Wharton’s jelly allograft product to be recognized as a 361 HCT/P by CMS regulated ...
(Date:7/18/2020)... ... July 16, 2020 , ... A study has been published ... Neoasis™ active noise control device to attenuate typical noises in a simulated neonatal ... the alarm sounds from patient monitors, ventilators and other bedside devices that would ...
(Date:7/2/2020)... ... July 01, 2020 , ... AltruBio Inc. http://www.altrubio.com ... a biologic for the treatment of steroid-refractory acute graft-versus-host disease (SR-aGVHD), at European ... J Martin of the Fred Hutchinson Cancer Research Center, this single-arm, open-label Phase ...
Breaking Biology News(10 mins):
(Date:8/12/2020)... FARMS, Mich. (PRWEB) , ... August 12, 2020 ... ... Consulting Group, Inc. (EMMA International), a global leader in FDA compliance consulting ... of the nation’s fastest-growing private companies. The list represents a unique look at ...
(Date:8/3/2020)... (PRWEB) , ... August 03, 2020 , ... ... collection, today announced Jim Corrigan, President and CEO has been named one of ... broad cross-section of industry sectors, PharmaVoice 100 honorees are selected based on how ...
(Date:7/31/2020)... ... July 29, 2020 , ... R3 Stem Cell International is ... $3950. With 50 million stem cells total, patients may choose which extremities they would ... for arthritic joints (BMC Musculoskelet Disord. 2016). At R3 International, umbilical cord tissue is ...
(Date:7/31/2020)... ... July 29, 2020 , ... ... transmitter systems that can be configured to drive Klystrons, TWTs, IOTs, and magnetrons. ... drive one or two switches in a push-pull configuration; yielding fast fall time ...
Breaking Biology Technology:
Cached News: