Navigation Links
Brain cells help neighboring nerves regenerate
Date:5/27/2008

Researchers have uncovered a completely unexpected way that the brain repairs nerve damage, wherein cells known as astrocytes deliver a protective protein to nearby neurons.

Astrocytes are a type of support cell in the brain that serve many functions; one of their roles is to chew up damaged nerves during brain injury and then form scar tissue in the damaged area.

Roger Chung and colleagues have now found that astrocytes have another trick up their sleeve. During injury, astrocytes overproduce a protein called metallothionein (MT) and secrete it to surrounding nerves; MT is a scavenging protein that grabs free radicals and metal ions and prevents them from damaging a cell, and thus is a potent protecting agent.

While the ability of astrocytes to produce MT has been known for decades, the general view was that the MT stayed within astrocytes to protect them while they help repair damaged areas. However, Chung and colleagues demonstrated that MT was present in the external fluid of damaged rat brain. Furthermore, with the aid of a fluorescent MT protein, they observed that MT made in astrocytes could be transported outside the cell and then subsequently taken up by nearby nerves, and that the level of MT uptake correlated with how well the nerves repaired damage.

While the exact physiological role that MT plays in promoting better repair remains to be identified, this unexpected role for this protein should open up new avenues in treating brain injuries in the future.


'/>"/>

Contact: Nick Zagorski
nzagorski@asbmb.org
301-634-7366
American Society for Biochemistry and Molecular Biology
Source:Eurekalert

Page: 1

Related medicine news :

1. Draining away brains toxic protein to stop Alzheimers
2. Vision restoration therapy shown to improve brain activity in brain injured patients
3. Clinical depression linked to abnormal emotional brain circuits
4. Brain imaging reveals breakdown of normal emotional processing
5. Brain cells work differently than previously thought
6. Vaccine Stops Alzheimers Brain Tangles
7. Research may unlock mystery of autisms origin in the brain
8. Scientists Spot Brains Free Will Center
9. Free will takes flight: how our brains respond to an approaching menace
10. Alcoholics With Cirrhosis Have More Brain Damage
11. Brain Lesions Predict MS Progression
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/4/2016)... CA (PRWEB) , ... May 04, 2016 , ... Nike ... to junior rugby in San Diego. Willis, founder of Elite Rugby Camps and current ... coaches and players every year since 2009. , “I’m excited for our eighth ...
(Date:5/4/2016)... ... 04, 2016 , ... All-Star Insurance of Northeast TX has ... of their local community. The agency pledges to select a new beneficiary every ... to bring awareness to important local causes with fundraising and other support, by ...
(Date:5/4/2016)... ... 2016 , ... Dr. Elyson and Dr. Assili, dentist in Northridge , ... tooth removal, a common dental procedure, is performed for many adolescents and young adults ... in risks of complications. By providing wisdom tooth removal surgery at their office, Dr. ...
(Date:5/4/2016)... ... , ... Francesca Loparco, Co-Founder of Queen City Dream Cars, an exotic car ... procedure at Christenbury Eye Center. The entrepreneur struggled with her computer, riding horses ... day as her in-office consultation and eye exam. Francesca’s eyesight was restored to 20/20 ...
(Date:5/4/2016)... TX (PRWEB) , ... May 04, 2016 , ... ... Nightstick all-LED multi-function small and compact tactical (6.7 inch) dual-light flashlights in models ... Las Vegas, model NSP-9842XL (average retail starting at $59.95) uses 2 included CR-123 ...
Breaking Medicine News(10 mins):
(Date:5/4/2016)... 4, 2016  It,s time for an upgrade. There are many medical recorders on ... inch LCD, the illustrious DVMAXX HD  offers unparalleled connectivity and functionality.  Ampronix  is ... world class manufacturer of innovative technology.  Photo - http://photos.prnewswire.com/prnh/20160503/363416 ... ... ...
(Date:5/4/2016)... May 4, 2016 Valeritas Holdings, ... an alternative public offering (APO). This was accomplished via ... Valeritas, Inc. and a private placement of approximately 5 ... per share. Under the terms of the ... Valeritas Holdings, Inc. will trade on the OTC Markets ...
(Date:5/4/2016)... , May 4, 2016 ... addition of the  "Global Acute lymphocytic Leukemia ...  report to their offering.       ... Global Acute Lymphocytic Leukemia Market and Competitive ... Acute Lymphocytic Leukemia pipeline products, Acute Lymphocytic ...
Breaking Medicine Technology: