These "zombie cells" linger in our tissues, emit inflammatory signals, and increase the risk of age-related diseases. And just like zombies that spread their living-dead condition through a bite or scratch, senescent cells can damage their healthy counterparts through chemicals they emit.
When these cells were first discovered 60 years ago, scientists regarded senescence as a strange phenomenon. But in 2011 and again in 2016, a research group from the Mayo Clinic genetically engineered mice to have no senescent cells and showed that the mice did not develop cataracts or other signs of aging. The mice without senescent cells could increase their "healthspan," living disease-free into old age, according to Nathan LeBrasseur, PhD, a researcher who is studying senescent cells in the skeletal muscles of mice.
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Diese Geschichte stammt aus der July - August 2023-Ausgabe von Popular Mechanics US.
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ONE OF THE 'GREATEST THREATS' TO THE PACIFIC NORTHWEST ISN'T WHAT YOU THINK.
EXPERTS ARE PREPARING THE REGION AGAINST THE THREAT OF DANGEROUS VOLCANIC MUDFLOWS, KNOWN AS LAHARS, WHICH COULD INUNDATE THE COMMUNITIES SURROUNDING MT. RAINIER IN AS LITTLE AS 30 MINUTES.
THE WORLD'S TOUGHEST ROW
They rowed 3,000 miles across the Atlantic, battling unpredictable weather, chaotic seas, and finicky equipment. But what they discovered gave them profound new insights into the power of the ocean.
HOW TO DIY OFF-GRID SOLAR
SPEND THE TIME UP FRONT AND PLAN IT CAREFULLY TO AVOID DISAPPOINTMENT
Are We on the Verge of an ARMS RACE in SPACE?
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Fresh Fingerprints on an Ancient Statue
A CLAY FIGURINE HAS SPENT MILLENNIA incomplete, waiting at the bottom of a lake for its long-dead craftsman to finish the Iron Age-era statuette.
Quantum Entanglement in Our Brains
IT HAS LONG BEEN ARGUED THAT THE human brain is similar to a computer. But in reality, that's selling the brain pretty short.
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WAY BACK IN 1508, WITH ONLY LIMited tools at his disposal, Nicolaus Copernicus developed a celestial model of a heliocentric planetary system, which he described in hist landmark work De revolutionibus orbium coelestium. It was a complete overhaul of our conception of the universe-one that, unfortunately, earned him the ire of the Catholic church for decades after his death-and forever changed the way we look at the stars.
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WE KNOW WHAT FOSSILS LOOK like. For example, typical dinosaur fossils are bones turned to stone and preserved from the passage of time, located, if we're particularly lucky, in large collections that can be reassembled to represent the beast they used to prop up in their entirety.
