Navigation Links
Researchers close in on origins of main ingredient of Alzheimer's plaques
Date:4/9/2008

St. Louis, Aprl 8, 2008 The ability of brain cells to take in substances from their surface is essential to the production of a key ingredient in Alzheimer's brain plaques, neuroscientists at Washington University School of Medicine in St. Louis have learned.

The researchers used a drug to shut down the intake process, known as endocytosis, in a mouse model of Alzheimer's disease. The change led to a 70 percent drop in levels of amyloid beta, the protein fragment that clumps together to form Alzheimer's plaques. Importantly, they also found that endocytosis' ability to increase amyloid beta was coupled to normal nerve cell communication called synaptic activity.

"Blocking endocytosis isn't a viable option for treatment because cells throughout the body, including brain cells, need endocytosis for healthy function," says first author John Cirrito, Ph.D., research instructor in neurology. "But we are starting to understand the origins of amyloid beta in more detail now, and what were learning is opening other options we can pursue to seek new treatments for Alzheimer's disease."

While endocytosis is necessary for normal function of brain cells, Cirrito and others believe it may accidentally be causing the cells to take in the amyloid precursor protein (APP), which breaks down into amyloid beta. If so, a drug that reduces brain cells' intake of APP may help reduce amyloid beta production.

The results appear in the April 10 issue of Neuron.

Other research had shown previously that endocytosis might be important for amyloid beta production, and that amyloid beta is produced inside brain cells. In 2005, Cirrito and his colleagues linked increased communication between brain cells to higher amyloid beta levels.

Cirrito decided to test both endocytosis and brain cell activity in a coordinated fashion. He used a technique known as microdialysis that he had previously adapted for Alzheimer's research to monitor th
'/>"/>

Contact: Michael Purdy
purdym@wustl.edu
314-286-0122
Washington University School of Medicine
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Researchers identify proteins involved in new neurodegenerative syndrome
2. Texas researchers and educators head for Antarctica
3. MGH researchers describe new way to identify, evolve novel enzymes
4. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
5. U of MN researchers discover noninvasive diagnostic tool for brain diseases
6. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
7. Researchers discover new strategies for antibiotic resistance
8. Researchers find new taste in fruit flies: carbonated water
9. Binghamton University researchers investigate evolving malaria resistance
10. UIC researchers find promising new targets for antibiotics
11. Researchers develop simple method to create natural drug products
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/3/2014)... , Dec. 2, 2014   Marvin ... deployed, innovative test solutions for military, aerospace, and ... version of its successful TS-900 PXI semiconductor ... and features of high-end systems to customers at ... value compared to traditional ATE. ...
(Date:11/21/2014)... Strict laws against distracted driving and the ... American and European automotive sector towards gesture recognition technologies. ... that are intuitive and able to retrieve information with ... New analysis from Frost & Sullivan,s Strategic ... Europe and North America ...
(Date:11/18/2014)... , Nov. 17, 2014   ... and EMC collaborate to develop The Partners Data ... , The Partners Data Lake will allow researcher ... improve diagnostics, treatment and the lives of patients ... research and clinical activities across the Partners system, ...
Breaking Biology News(10 mins):Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 2Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5
... Mentor Award of the American Association for the Advancement ... education and research changes at his institution, leading to ... biological sciences." Tsin, who is a professor of ... Training in the Sciences at the University of Texas ...
... of Philadelphia (CHOP) have developed a unique laboratory ... molecules. The test relies on faster, more comprehensive ... (HLAs)--complex, highly variable proteins on cell surfaces that ... test may improve transplantation outcomes through a more ...
... , NEW YORK, NY (February 12, 2014) A ... by Wellington V. Cardoso, MD, PhD, has found the ... A deficiency and postnatal airway hyperresponsiveness, a hallmark of ... deficit of this essential vitamin while the lung is ...
Cached Biology News:2013 AAAS Lifetime Mentor Award goes to Andrew Tsin of the University of Texas at San Antonio 2CHOP introduces HLA typing by next-generation sequencing to its clinical services 2CHOP introduces HLA typing by next-generation sequencing to its clinical services 3Prenatal vitamin A deficiency tied to postnatal asthma 2Prenatal vitamin A deficiency tied to postnatal asthma 3
(Date:12/19/2014)... 18, 2014 Relmada Therapeutics, Inc. (OTCQB: RLMD), ... of chronic pain, announced the results of its annual ... was a transformational year in Relmada,s history and it ... company," said Sergio Traversa , chief executive officer ... on key financial, human resource and clinical development objectives ...
(Date:12/17/2014)... N.J. (PRWEB) December 17, 2014 ... (Euronext: IPN; ADR: IPSEY), today announced ... (referred to as Somatuline®) was approved by the ... treatment of gastroenteropancreatic neuroendocrine tumors (GEP-NETs) in adult ... advanced or metastatic disease to improve progression-free survival ...
(Date:12/17/2014)... 17, 2014 Audacity, a leading California-based ... member of the Huntsworth Health Group, is proud to ... team. In her role, Gonzales will serve as Senior ... incredibly honored to welcome a talent of Jamie’s caliber ... Gaëtan Fraikin. “She is a proven healthcare innovation leader ...
(Date:12/17/2014)... Mass. , Dec. 17, 2014   Synageva ... biopharmaceutical company developing therapeutic products for rare disorders, announced ... Conference being held in San Francisco, CA. ... President and Chief Executive Officer, will present on Monday, ... EST).  The presentation will be webcast live and may ...
Breaking Biology Technology:Relmada Therapeutics Announces Results of Annual Shareholders Meeting 2Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 2Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 3Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 4Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 5Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 6Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 7Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 8Audacity Welcomes Healthcare Communications Expert Jamie Gonzales as Senior Vice President of Client Services 2
... PHILADELPHIA, May 28 Premier Research Group plc ... of Anthony Faragasso, MD as Executive Director and ... position, Dr. Faragasso will lead,the global Medical Management ... and safety services, Dr. Faragasso brings to ...
... ... Manufacturing Experience -, SAN DIEGO, May 28 ... Gordon H.,Busenbark to the company,s board of directors. Mr. Busenbark ... privately,held development-stage specialty pharmaceuticals company focused on,diseases of the central ...
... launch of a new collaborative website initially focusing on ... WikiProfessional technology underlying the site has been developed based ... open access journal Genome Biology, WikiProteins provides a method ... The article is written by Barend Mons of the ...
Cached Biology Technology:Premier Research Names Anthony Faragasso, MD as Executive Director and Global Head of Medical Management and Safety 2Nventa Appoints Gordon H. Busenbark to Board of Directors 2Large-scale community protein annotation -- WikiProteins 2
...
Anti 4-hydroxy-2-hexenal (4-HHE) Monoclonal Antibody (HNEJ-2)...
... immunostaining ,This solution has effect on enhancing ... clearer signal than the one obtained by ... of secondary antibody used and exposure time ... have images with high S/N ratio and ...
Anti-human VEGFR-2/KDR (Protein-A Purified) Polyclonal Antibody...
Biology Products: