A third update to Signaling pathways and aging:
“Sima, who was born on 28 February 2019, has lived for 47 months, surpassing the 45.5 months believed to be the oldest age recorded in scientific literature for a female Sprague-Dawley rat, the researchers say. So far, Sima has outlived her closest rival in the study by nearly six months.
‘The real point of our experiments is not so much to extend lifespan, but to extend youthspan, to rejuvenate people, to make their golden years really potentially golden years, instead of years of pain and decrepitude,’ Katcher said. ‘But the fact is, if you manage to do that, you also manage to lengthen life, and that’s not a bad side-effect.'”
https://www.theguardian.com/science/2023/feb/08/anti-ageing-scientists-extend-lifespan-of-oldest-living-lab-rat “Anti-ageing scientists extend lifespan of oldest living lab rat”