HOME >> BIOLOGY >> NEWS
Molecular 'stop signs' may hold secret of nerve regeneration

Using brain cells from rats, scientists at The Johns Hopkins University School of Medicine and the University of Hamburg have manipulated a molecular "stop sign" so that the injured nerve cells regenerate.

While their findings are far from application in people, the prospects for eventually being able to repair spinal cord injury are brighter, they say.

"Four thousand years ago, physicians wrote that spinal cord injury was untreatable, and unfortunately it's much the same today," says Ronald L. Schnaar, Ph.D., professor of pharmacology and of neuroscience at Hopkins. "But the basic-science framework for improving this situation is quickly emerging."

In adult mammals, including humans, molecular signals carefully control the number of contacts nerve cells make by inhibiting new connections. When the brain or spinal cord has been damaged, the goal is to neutralize those inhibitors so that the long tentacles of nerve cells, the axons, might reestablish their broken connections, says Schnaar.

The research team reports identifying brain chemicals that are involved in the ability of one of the inhibitors to prevent injured nerve cells from connecting to other nerves or muscles. By keeping the chemicals from interacting with the inhibitor, the researchers were able to stimulate damaged nerve cells to regenerate in laboratory dishes. Their report is in the June 11 issue of the Proceedings of the National Academy of Sciences.

"In the central nervous system, once an axon is interrupted in some way, through disease or injury, generally it's stopped dead in its tracks, but in the rest of the body, damaged axons can re-grow," says Schnaar. "To make headway in treating brain and spinal cord injury, we need to attack this problem from a number of angles, and our studies have provided an additional target for intervention."

Of the "stop signs" identified so far, Schnaar's team focused on MAG, or myelin-associated glycoprotein, whi
'"/>

Contact: Joanna Downer
jdowner1@jhmi.edu
410-614-5105
Johns Hopkins Medical Institutions
18-Jun-2002


Page: 1 2

Related biology news :

1. Molecular motor implicated in tissue remodeling
2. 16th EORTC NCI AACR Symposium Molecular Targets and Cancer Therapeutics
3. 16th EORTC-NCI-AACR Symposium on Molecular Targets and Cancer Therapeutics
4. Molecular staples shape a cancer killer
5. Molecular motor myosin VI moves hand over hand, researchers say
6. Molecular therapeutics advance fight against brain cancer
7. Molecular motor shuttles key protein in response to light
8. Molecular traffic cop directs cellular signals
9. Molecular marker predicts success of breast cancer treatment
10. Molecular image of genotoxin reveals how bacteria damage human DNA
11. Molecular mechanism found that may improve ability of stem cells to fight disease

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


(Date:4/11/2017)... N.Y. , April 11, 2017 ... fingerprints, but researchers at the New York University ... College of Engineering have found that partial similarities ... security systems used in mobile phones and other ... thought. The vulnerability lies in the ...
(Date:4/5/2017)... , April 5, 2017  The Allen Institute for ... Cell Explorer: a one-of-a-kind portal and dynamic digital window ... imaging data, the first application of deep learning to ... stem cell lines and a growing suite of powerful ... for these and future publicly available resources created and ...
(Date:4/4/2017)... NEW YORK , April 4, 2017   ... solutions, today announced that the United States Patent and ... The patent broadly covers the linking of an iris ... the same transaction) and represents the company,s 45 th ... our latest patent is very timely given the multi-modal ...
Breaking Biology News(10 mins):
(Date:9/21/2017)... ... September 21, 2017 , ... When a ... the response was swift and efficient thanks to the continuing efforts of members ... up of more than 50 stakeholders, including officials from area counties and cities, ...
(Date:9/20/2017)... ... 20, 2017 , ... Cybrexa Therapeutics , a start-up ... role of chief scientific officer. In this role, Dr. Paralkar will lead the ... CEO, Per Hellsund. , “I was impressed with Cybrexa’s revolutionary technology and excellent ...
(Date:9/20/2017)... ... September 20, 2017 , ... ... the effects of exoskeleton-assisted walking on gait parameters and neuromuscular activity in ... adaptations during a robotic powered exoskeleton assisted walking session" (doi:10.1080.10790268.2017.1314900) was epublished ...
(Date:9/19/2017)... , ... September 19, 2017 , ... ... accurately automates the most dangerous step of sample prep for metals digestion—the addition ... provide automation at an affordable price. The system is ideal for any laboratory ...
Breaking Biology Technology:
Cached News: