Stimulating neurons could protect against brain damage

A breakthrough in understanding how brain damage spreads and how it could be controlled has been discovered by UK scientists.
Collaboration between neuroscientists and engineers at the Universities of Strathclyde and Dundee in the UK have uncovered a previously unknown mechanism in the brain that allows networks of neurons to protect against the spreading secondary damage seen in cases of strokes and traumatic brain injuries
Dr Michele Zagnoni, Senior Lecturer in Electronic and Electrical Engineering at the University of Strathclyde, was a partner in the research.
"Using microfluidic technology, we were able to produce in-vitro neuronal networks to investigate spreading toxicity in the brain, which is the cause of brain damage even after an initial trauma.

"Through this process, we were able to demonstrate how the spread of this toxicity is driven. In doing that we also uncovered a previously unknown, fast acting, neuroprotective signalling mechanism," he said.
"This mechanism utilises the innate capacity of the surrounding neuronal networks, grown in the laboratory, to provide protection against the spreading toxicity.

"By stimulating that network, then theoretically we could limit the spread of brain damage. That requires further work, but it is an exciting and important possibility."
"If this network activity could be triggered clinically as soon as possible then major brain damage could be minimised and recovery periods shortened," said Dr Christopher Connolly, Reader in Neurobiology in Dundee's School of Medicine.

"Although this is basic laboratory research, it does now re-open the door to the possibility of stopping ongoing brain damage.
"Slow acting neuroprotection is well known but approaches to induce protection require at least 24 hours notice to be effective. This is of no practical use in a clinical emergency situation such as a stroke or traumatic brain injury, so current treatment options are limited to aiding the recovery processes.
"We have identified that neuronal networks react to an insult by sending rapid - in minutes - warning signals in an attempt to protect against the toxicity that causes brain damage.

"Where we can't protect neurons quickly, we can recruit the help of surrounding neurons to do this for us. It is a case of 'If you need a job done quickly, ask the expert' and in this instance the experts are the neurons themselves."
"This is something we certainly need to test further but it does suggest the possibility of an effective and immediate pharmacological treatment for stroke," said Dr Connolly.
The results of the research are published in the journal Scientific Reports.