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Brain juice
Taking the blood of young people and using it to revitalize the old is a popular concept supported by fragmentary scientific evidence and surrounded by hype. But now, scientists may have understood how these transfusions work, thanks to two newly identified proteins.
Scientists from Stanford University took blood from two groups of mice – one cohort was two weeks old and the other from 12 to 15 months old – and applied it to cells from the human brain derived from embryonic stem cells, according to New scientist. Only the blood of the younger group stimulated neural development, giving more weight to the idea of medical vampirism.
Home made
This research helps explain the "how" behind these revitalizing blood transfusions. According to the study published in the review, two proteins present only in the blood of younger mice, THBS4 and SPARCL1, have grown the branches of neurons developed in the laboratory and created twice as many connections. PNAS. These two factors are signs of healthy and increased neural development.
But that does not mean that clinics that claim that young blood transfusions have medical benefits – a dubious statement by the FDA – were right. A lot of human and non-human neurons grown in a petri dish are not identical to a living human brain, and many clinical experiments are needed before anyone can make justified medical claims about young blood transfusions.
READ MORE: Two brain rejuvenation proteins have been identified in young blood[[[[New scientist]
More on blood transfusions: A vampire clinic selling young blood at the farm's rich store
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