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Washington [US], April 7 : A spinal cord injury patient's extremely low blood pressure can be treated with an implant that sends electrical stimulation to a specific group of spinal neurons, addressing a frequent "invisible" side effect of paralysis.The 2023 BioInnovation Institute & Science Award for Innovation goes to Jordan W. Squair in recognition of his work in creating this therapy, referred to as the neuroprosthetic baroreflex. The award honours researchers who work at the interface of the biological sciences and entrepreneurship."Dr. Squair's prize-winning research on epidural electrical stimulation restores blood pressure control in patients suffering from spinal cord injury," said Yevgeniya Nusinovich, senior editor at Science. "Using this technology to stabilize blood pressure in the normal range decreases patients' risk of fainting and other complications, greatly improving their safety and quality of life."Squair, a researcher with NeuroRestore at the Swiss Federal Institute of Technology (EPFL), said the treatment offers a new way to address a problem that affects up to 90% of people with spinal cord injuries.In addition to spinal cord injury, a woman with severe motor and autonomic nervous system disease, who had such low blood pressure that she could not stand for more than a few minutes at a time, was able to walk several hundred meters immediately after receiving the implant and has stopped fainting, Squair wrote in his prize-winning essay in Science."Since then it's been a really cool experience to see it work every single time in every person that we've tested," he said. "It's exciting to see a functional neurosurgical approach that works that robustly and that simply."Spinal cord injury can prevent the brain from modulating blood pressure during posture changes, such as moving to a sitting or standing position. A person's blood pressure can drop to very low levels as a result, which may keep them bedridden, dizzy, nauseous, or prone to fainting."Almost all of these patients are being treated for orthostatic hypotension using conservative measures like an abdominal binder, maybe compression stockings on their legs, or they've been recommended to have a high salt diet, things like that," Squair said. "But if you then ask them if they still experience symptoms of it, despite being treated conservatively for it, they almost all still do."Squair and his colleagues at EPFL and the University of Calgary developed a way to treat this lesser-known consequence of spinal cord injury by expanding the use of epidural electrical stimulation (EES), which has been used in some people to restore movement and sensation.Neuroscientists Gregoire Courtine and Jocelyne Bloch, who lead NeuroRestore, showed "that if you stimulate a certain part of the spinal cord, you can activate the expected function," Squair said.Finding the right part of the spinal cord to stimulate was one of the essential first steps in developing the new treatment. Squair systematically tested the spinal cord segment by segment in rodents, combining these findings with anatomical studies. He found that "the best place to stimulate coincides with the place in the spinal cord that contains the most neurons that are relevant for controlling blood pressure."The last three thoracic segments of the spine are enriched in these neurons. These "hotspots" can be found in mice, rats, pigs, and non-human primates, and have been mapped in some humans, "and they seem to hold up across species," said Squair.This work is now supported by a large consortium funded by the U.S. Defense Advanced Research Projects Agency (DARPA), to expand the treatment's capabilities. For instance, the implant might be useful in the acute phase of spinal cord injury, when blood pressure can be unstable.At the moment, this problem is treated with drugs that can overshoot their therapeutic mark or wear off, "so there might be a role for this [implant] to keep people stable when they're in the ICU or spine unit," Squair explained.Inside the hospital, blood pressure changes are monitored carefully with an invasive arterial line. But when a patient leaves the hospital, "there's not really any way that anyone currently has to monitor blood pressure with that kind of resolution," he said. "So part of the DARPA program is to try to advance that capability, to potentially monitor blood pressure with every beat of the heart."Clinical trials in collaboration with ONWARD Medical of the implant could begin by next year, Squair said."This year's finalists have conducted some truly exceptional research and the standard of all entries was extremely high," said Jens Nielsen, chief executive officer at BioInnovation Institute. "Their work combines cutting edge science with entrepreneurial spirit, aligning with BII's goals of improving human and planetary health."Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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Bioinnovation Institute & Science Award For InnovationFOLLOW

Bioinnovation institute & science award for innovation, Latest News

Health :Study reveals implant can cure low blood pressure in people with spinal cord injury

Washington [US], April 9 : The extremely low blood pressure of a spinal cord injury patient can be treated ... ...

Technology :Study suggests implant can treat low blood pressure in people with spinal cord injury

Washington [US], April 7 : A spinal cord injury patient's extremely low blood pressure can be treated with an ... ...