Ratan Bhardwaj and his colleagues at the Karolinska Institute in Stockholm, Sweden, used radiocarbon dating, which is normally employed to establish the age of archaeological or geological remains, to work out the age of heart cells compared to the chronological age of the person from which they were isolated. To do this, the team took advantage of nuclear tests done during the 1950s and 1960s, which led to a sharp increase of radioactive Carbon 14 in the atmosphere. The radioactive material was captured by plants as CO2 and then worked its way up the food chain and into the DNA of the human body. Soon after the tests were stopped, atmospheric C14 levels declined again, leading to a corresponding drop in the C14 concentration in human DNA.- MIT Technology Review
The team measured C14 levels in the heart tissue of twelve deceased patients aged between 19 and 73 at the time of death and found elevated C14 even in those subjects who had been born two decades before the nuclear tests started, indicating that the radioactive carbon must have been incorporated into heart muscle cells long after birth. Similarly, the C14 levels in the hearts of younger patients did not match the year of their birth but rather indicated a younger birthday for the cells.
It totally amazed me, on multiple counts, foremost, using radioactive dating to find cellular regenaration rate itself sounds absolutely fabulous a concept. But to put to a good use, a nuclear catastrophe, is what amazed me. Hats off to the team and the weirdly fabulous ways that we think.Next time I hear someone say that everything happens for good, I would surely think twice before neglecting that as a cliche.
