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New hope for spinal cord injury patients – The Boston Globe

A few small steps for mice may lead to one giant leap for research into spinal cord injuries.

Severe spinal cord injuries often leave patients paralyzed from the injury site down, even if only some nerves were damaged. Researchers at Boston Children’s Hospital wanted to know why undamaged nerve pathways stop functioning — and their experiment resulted in paralyzed mice regaining their ability to walk.

The study, led by research associate Dr. Zhigang He, provides insight into why unharmed parts of the spinal cord stop working and how they can be revitalized. Researchers reported that 80 percent of paralyzed mice that were treated with a particular compound regained their ability to walk.

Neurons, or nerve cells, transmit messages from the brain to various parts of the body to trigger functions such as motion. For most spinal cord injury patients, not all of the nerve connections to the brain are severed. Despite these pathways remaining intact, at least half of patients still experience complete paralysis and loss of sensation. These out-of-commission neurons are called inhibitory, meaning they fail to foster communication between brain and spine. “We think that if we can understand why those connections are not functional, that might help develop more efficient strategy for functional recovery,” He said. “We don’t have to make a new connection, we can rely on pre-existing connections.”

Read more at: https://www.bostonglobe.com/metro/2018/08/08/new-hope-for-spinal-cord-injury-patients/jMoeulk4Kcpa1GzNXhKw2O/story.html

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