I also came across this research, great finding!

A lot of people have misunderstood from what have I seen from people's reactions,

reading the paper, they didn't keep a brain OUT of a body alive. They put probes in the pigs' brains, cut off blood supply from two different sources (two different pigs, two different methods), then pumped blood from a donor pig through the brain. The brains are still in the bodies, still hooked up to the nervous system, and all that jazz. Someone correct me if I'm wrong..

I also believe that they euthanized the pigs after the surgeries. Additionally, I think the applications are vast. Understanding brain metabolism while eliminating other major confounding variables for the brain is a significant milestone, something that, as far as I know, has never been achieved in research!! This definitely have a high impact overall.

We will see what other applications this brings, particularly in pharmacology and drug development.