Wednesday, United States researchers reported in the journal
Cell that they had discovered a fatty substance made in our stomach that
sent signals to the brain, announcing when it was time to stop eating.
Scientists conducted experiments on mice and rats, which
showed that the chemical called NAPE regulated the amount of food the rodents
ingested. The same fat-derived substance is found in our body, as well, so
researchers believe it might have the same effect on humans.
Gerald Shulman of Yale University and the Howard Hughes
Medical Institute, along with fellow colleagues, found that when the rodents
were given a fatty meal, their small intestine released a large quantity on the
NAPE chemical, which afterwards sent a signal to their brain that rendered them
to cease eating.
Moreover, scientists reported that when the mice and rats
were fed protein or carbohydrates, their NAPE levels did not increase.
The substance was synthesized by researchers and injected
into the rodents’ bloodstream through their stomach, which also made them lose
their appetite.
Furthermore, when the animals were given extra doses of NAPE
over a period of five consecutive days, their appetite significantly reduced
and they also lost weight.
The findings could open the door to more effective
anti-obesity drugs, since the United States, along with other parts of the
world, are currently faced with an obesity epidemic.
Gerald Shulman stated that researchers were planning to conduct
tests on humans, in order to see whether the small intestine produced more
NAPE after a fatty meal.