Jewish News Syndicate, Israeli study explains delay in tanning after sun exposure
Tel Aviv University researchers have proposed a new theory for why the body’s tanning process does not occur immediately after exposure to the sun’s rays, but only after a few hours or even days.
The study found that the body’s initial response to sun exposure is to prioritize repairing DNA damage in the skin cells, which inhibits the mechanism responsible for skin pigmentation, commonly known as tanning.
. . .
“We have two mechanisms designed to protect the skin from exposure to dangerous UV radiation. The first mechanism repairs the DNA in the skin cells damaged by the radiation, while the second mechanism involves increased production of melanin, which darkens the skin in order to protect it from future exposure to radiation,” explained Elkoshi.
“It turns out that the mechanism that repairs our DNA takes precedence over all other systems in the cell, temporarily inhibiting the pigmentation mechanism. Only after the cells repair the genetic information to the best of their ability do they begin to produce the
increased melanin,” he added.
The Wombat has Rule 5 Monday: Public Benefactors up and awaiting your digital delight.
No comments:
Post a Comment