Did Yale scientists just redefine brain death using pig brains?
Scientists restored some activity in the brains of pigs that had been slaughtered hours before, raising hopes for some medical advances and questions about the definition of death.By medical standards "this is not a living brain," said Nenad Sestan of the Yale School of Medicine, one of the researchers reporting the results on Wednesday in the journal Nature.
Such research might lead to new therapies for stroke and other conditions, as well as provide a new way to study the brain and how drugs work in it, researchers said. They said they had no current plans to try their technique on human brains.The 32 brains came from pigs killed for food at a local slaughterhouse.
When scientists removed these neurons from treated brains and stimulated them electrically, the cells responded in a way that indicated viability. If such consciousness had appeared in the reported experiments, scientists would have used anaesthesia and low temperatures to quash it and stop the experiment, said study co-author Stephen Latham of Yale.Researchers are now seeing if they can keep the brain functions they observed going for longer than six hours of treatment, which Latham said would be necessary to use the technology as a research tool.
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