{"id":56836,"date":"2023-02-20T12:47:36","date_gmt":"2023-02-20T17:47:36","guid":{"rendered":"https:\/\/cablemanpro.com\/wallstreetpr\/in-first-of-its-kind-expirement-stroke-survivors-are-able-to-move-their-hands-again-with-spinal-cord-zaps-56836"},"modified":"2023-02-20T12:47:36","modified_gmt":"2023-02-20T17:47:36","slug":"in-first-of-its-kind-expirement-stroke-survivors-are-able-to-move-their-hands-again-with-spinal-cord-zaps","status":"publish","type":"post","link":"https:\/\/cablemanpro.com\/wallstreetpr\/in-first-of-its-kind-expirement-stroke-survivors-are-able-to-move-their-hands-again-with-spinal-cord-zaps-56836","title":{"rendered":"In first-of-its-kind expirement, stroke survivors are able to move their hands again with spinal cord zaps"},"content":{"rendered":"
\n

A stroke left Heather Rendulic with little use of her left hand and arm, putting certain everyday tasks like tying shoes or cutting foods out of reach.<\/p>\n

“I live one-handed in a two-handed world and you don\u2019t realize how many things you need two hands for until you only have one good one,” the Pittsburgh woman told The Associated Press<\/a>.<\/p>\n

So Rendulic volunteered for a first-of-its-kind experiment: Researchers implanted a device that zaps her spinal cord in spots that control hand and arm motion. When they switched it on, she could grasp and manipulate objects \u2014 moving a soup can, opening a lock and by the end of the four-week study, cutting her own steak.<\/p>\n

It\u2019s not a cure \u2014 the improvements ended after scientists removed the temporary implant \u2014 and the pilot study included only Rendulic and one other stroke survivor. But the preliminary results, published Monday, mark a step toward one day restoring mobility for this extremely common type of paralysis.<\/p>\n

SEN. FETTERMAN\u2019S HOSPITALIZATION RAISES QUESTIONS ABOUT FITNESS OF ILL LAWMAKERS TO SERVE IN CONGRESS<\/strong><\/a><\/p>\n

“They\u2019re not just getting flickers of movement. They\u2019re getting something important,” said Dr. Jason Carmel, a Columbia University neurologist who wasn\u2019t involved with the new experiment but also studies ways to recover upper-limb function. “It\u2019s a very exciting proof of concept.”<\/p>\n

Nearly 800,000 people in the U.S. alone suffer a stroke<\/a> each year. Even after months of rehabilitation, well over half are left with permanently impaired arm and hand function that can range from muscle weakness to paralysis.<\/p>\n

Experiments by multiple research groups have found that implanting electrodes to stimulate the lower spine shows promise for restoring leg and foot movement to people paralyzed after a spinal cord injury \u2014 some have even taken steps.<\/p>\n

DR. MARC SIEGEL: LIGHTHEADEDNESS IS NOT A SIGN OF A STROKE<\/strong><\/a><\/p>\n

But upper-limb paralysis has gotten little attention and is inherently more challenging. The brain must signal multiple nerves that control how the shoulder lifts, the wrist turns and the hand flexes. Stroke damage makes it harder for those messages to get through.<\/p>\n

“People still retain some of this connection, they\u2019re just not enough to enable movement,” said University of Pittsburgh assistant professor Marco Capogrosso, who led the new research with colleagues at Carnegie Mellon University. “These messages are weaker than normal.”<\/p>\n

His idea: Stimulate a pathway of related nerve cells so they’re better able to sense and pick up the brain\u2019s weak signal.<\/p>\n

“We\u2019re not bypassing their control. We\u2019re enhancing their capabilities to move their own arm,” he said.<\/p>\n

Researchers turned to implants the size of spaghetti strands that already are used to stimulate the spine for chronic pain treatment. The implants carry electrodes that are placed on the surface of the spinal cord to deliver pulses of electricity to the targeted nerve cells \u2014 which for hand and arm control are in the spine\u2019s neck region.<\/p>\n

Rendulic and a second, more severely impaired volunteer could move better as soon as the stimulator was switched on \u2014 and by the study\u2019s end showed improved muscle strength, dexterity and range of motion, researchers reported Monday in the journal Nature Medicine. Surprisingly, both participants retained some improvement for about a month after the implants were removed.<\/p>\n

Rendulic, now 33, was performing some fine-motor tasks for the first time since suffering a stroke in her 20s. That unusually young stroke, caused by weak blood vessels that bled inside her brain, initially paralyzed her entire left side. She learned to walk again but \u2014 with the exception of those four weeks with spinal stimulation \u2014 cannot fully open her left hand or completely raise that arm.<\/p>\n

“You feel like there\u2019s a barrier between your brain and your arm,” Rendulic said. But with the stimulation on, “I could immediately sense that, like, oh my arm and hand are still there.”<\/p>\n

Two other researchers who helped pioneer experiments stimulating the lower limbs of people with spinal cord injuries say it\u2019s logical to now try the technology for stroke.<\/p>\n

While bigger and longer studies are needed, the new results “are really promising,” said Mayo Clinic assistant professor Peter Grahn.<\/p>\n

Scientists have learned from research with lower limbs that “it may not matter where that injury occurs, if it\u2019s something in the brain or it\u2019s a spinal cord injury,” added University of Louisville professor Susan Harkema. “Targeting the human spinal cord circuitry has a lot of potential.”<\/p>\n

With National Institutes of Health funding<\/a>, Capogrosso is studying the approach in a few more stroke survivors. The researchers also have formed a company to further develop the technology.<\/p>\n<\/div>\n

Source – https:\/\/www.foxnews.com\/us\/first-kind-expirement-stroke-survivors-able-move-hands-again-spinal-cord-zaps <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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