Older mice got stronger, exercised longer and performed better mentally after they were injected with blood from young mice, or even just with a substance that's more abundant in younger blood, U.S. researchers found.
Someday, if more research goes well, this may lead to a way to treat some infirmities of old age in people. In the meantime, scientists have a warning for do-it-yourselfers.
"Don't try this at home," said Saul Villeda of the University of California, San Francisco, an author of one of three papers published online Sunday by the journals Nature Medicine and Science.
He worked with mice that were roughly the equivalent of people in their 20s and 60s. Researchers repeatedly injected the older mice with blood from either the younger animals or other aged mice. Those that got the young blood did better in learning and memory tests than the mice given the older blood. For example, they performed better at recalling where to find a submerged platform in a maze.
Villeda said the researchers are trying to figure out what's in the young blood that made the difference.
"... It is only in this way that we can hope to arrive at truth, and fulfill the great responsibility which we hold to God and our country. Should I keep back my opinions at such a time, through fear of giving offense, I should consider myself as guilty of treason towards my country, and of an act of disloyalty toward the Majesty of Heaven, which I revere above all earthly kings."....I know not what course others may take; but as for me, give me liberty or give me death!"
Sunday, May 4, 2014
BLOOD FOUND IN THE YOUTH SHOWS TO REJUNEVATE THE AGING–AS SHOWN TO OCCUR WITH OLDER MICE WHEN INJECTED WITH YOUNGER BLOOD–FROM PAPERS OF SAUL VILLEDA OF UIC–SHOWS PROMISING FOR THE AGING POPULATION
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