Did you possibly mean sirloin?
“It is designed to activate a protein called sirtuin, which is believed to mimic the effects of caloric restriction.”
“Sirtris was formed on the premise that resveratrol could activate SIRT1, and the company's researchers set out to discover similar compounds (called sirtuin mimetics) that would be more potent activators of this possibly life-extending gene.”
“The gene regulates the production of a class of proteins known as sirtuin one.”
“This strengthens your immune cells and causes the production of a protein called sirtuin that decreases inflammation.”
“The new drugs are called sirtuin activators, meaning that they activate an enzyme called sirtuin.”
“When it comes to calorie restriction, the mechanism that slows aging comes in the formof a protein called sirtuin.”
“Resveratrol, a naturally occurring substance found in low quantities in red wine, affects many different mechanisms in the body, including a protein called sirtuin enzyme one, or Sirt1.”
“They said that a family of proteins called sirtuin could have given the protection.”
“Add to everyone's life expectancy with "sirtuin" research or "mitochondria" research, and let the marketers name it.”
“Other scientists believe that enzymes, such as sirtuin, keep the body healthful in youth, but become less powerful with age.”
These user-created lists contain the word ‘sirtuin’.
these came into effect from 2011
Looking for tweets for sirtuin.