{"id":119095,"date":"2019-04-18T01:22:55","date_gmt":"2019-04-18T01:22:55","guid":{"rendered":"https:\/\/www.bnreport.com\/dead-pig-brains-bathed-in-artificial-fluid-showed-signs-of-cellular-life\/"},"modified":"2019-04-18T01:22:55","modified_gmt":"2019-04-18T01:22:55","slug":"dead-pig-brains-bathed-in-artificial-fluid-showed-signs-of-cellular-life","status":"publish","type":"post","link":"https:\/\/www.bnreport.com\/en\/dead-pig-brains-bathed-in-artificial-fluid-showed-signs-of-cellular-life\/","title":{"rendered":"Dead pig brains bathed in artificial fluid showed signs of cellular life"},"content":{"rendered":"

Scientists have restored cellular activity to pig brains hours after the animals death \u2014 an unprecedented feat. This revival, achieved with a sophisticated system of artificial fluid, took place four hours after the pigs demise at a slaughterhouse.<\/p>\n

\u201cThis is a huge breakthrough,\u201d says ethicist and legal scholar Nita Farahany of Duke University, who wasnt involved in the research. \u201cIt fundamentally challenges existing beliefs in neuroscience. The idea of the irreversibility of loss of brain function clearly isnt true.\u201d<\/p>\n

The results, reported April 17 in Nature<\/em>, may lead to better treatments for brain damage<\/a> caused by stroke or other injuries that starve brain tissue of oxygen. The achievement also raises significant ethical puzzles about research on brains that are not alive, but not completely dead either.<\/p>\n

In the study, the brains showed no signs of the widespread neural activity thought to be required for consciousness. But individual nerve cells were still firing. \u201cTheres this gray zone between dead animals and living animals,\u201d says Farahany, who coauthored a perspective piece<\/a> in Nature<\/em>.<\/p>\n

The experiments were conducted on pigs that had been killed in a food processing plant. These animals were destined to become pork. \u201cNo animals died for this study,\u201d the authors of the new work write in their paper.<\/p>\n

After decapitation, about 300 pig heads were put on ice and transported to a Yale University laboratory, where researchers surgically removed the brains. Four hours post mortem, researchers put 32 of these brains in an artificial system known as BrainEx <\/em>\u2014 a chamber with specially designed blood replacement fluid that pumps through the blood vessels, delivering oxygen, sugar and other sustaining ingredients at body temperature to keep the brains operating.<\/p>\n

During six hours in the BrainEx<\/em> system, these dead brains showed signs of activity. Oxygen and sugar went into the brain tissue, and carbon dioxide came out, analyses of the fluid showed. That suggested the brains were still busy metabolically. Some of the nerve cells in the hippocampus and prefrontal cortex, key brain areas for complex thinking, appeared healthy under a microscope. And nerve cells could still fire off signals, studies on individual cells in brain slices showed. In contrast, brains that werent in the BrainEx<\/em> system deteriorated.<\/p>\n\n\n\n\n
[youtube https:\/\/www.youtube.com\/watch?v=9xyYaww4wn4?rel=0]<\/td>\n<\/tr>\n
\nPUMP IT An artificial fluid courses through this pig brain after death, keeping the cells oxygenated and fed.\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Z. Vrselja et al<\/em>\/Nature<\/em> 2019<\/p>\n

The results suggest that brains, perhaps even human ones, are much more resilient than once thought. \u201cThats the punchline,\u201d says study coauthor Nenad Sestan, a neuroscientist at Yale. The technique offers a new way to study animal brains in labs, experiments that might yield insights into countering human brain damage caused by strokes or other injuries, he says.<\/p>\n

The study is also notable for what it did not observe \u2014 coordinated widespread brain activity that could be detected by electrodes on the brains surfaces. That sort of activity can indicate some level of awareness. If the scientists had observed such signals, the experiment would have been stopped immediately, says study coauthor Stephen Latham, a bioethiciRead More \u2013 Source<\/strong><\/a>
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science news<\/a><\/h5>\n

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Scientists have restored cellular activity to pig brains hours after the animals death \u2014 an unpreced..<\/p>\n","protected":false},"author":1,"featured_media":119096,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-119095","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science"],"yoast_head":"\nDead pig brains bathed in artificial fluid showed signs of cellular life - Business News Report<\/title>\n<meta name=\"description\" content=\"Scientists have restored cellular activity to pig brains hours after the animals death \u2014 an unpreced..\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bnreport.com\/en\/dead-pig-brains-bathed-in-artificial-fluid-showed-signs-of-cellular-life\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dead pig brains bathed in artificial fluid showed signs of cellular life - 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