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Definition of PYYPYY: A hormone concerned with hunger and the lack of hunger (satiety).Soon after eating, PYY is secreted into the blood by cells lining the lower small intestine (the ileum) and the colon.The release of PYY begins before nutrients arrive in the lower small intestine and the colon.The further release of PYY is stimulated by nutrients within the lower small intestine and the colon.PYY decreases food intake by inhibiting gut motility.MedicineNet provides reliable doctor produced health and medical information.We comply with the HONcode standard for health trust worthy information: verify here.MedicineNet does not provide medical advice, diagnosis or treatment.FORM VALIDATION MINIMUM ELEMENTS OR SUBMIT FUNCTION NAME
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hbx.The results may help target new treatments against obesity, say researchers.Rachel Batterham at University College London, UK, and her colleagues have previously shown that a hormone called peptide YY or PYY, which is released by the gut in proportion how many calories we eat, is a powerful appetite suppressant.Batterham's team used functional magnetic resonance imaging (fMRI) to investigate how PYY affects the brain.They scanned each of eight subjects twice, once while they were on an intravenous drip of PYY, mimicking its release after a meal, and once while just receiving a saline solution.What is more, changes in the activity of these two areas could accurately predict how much food the subjects would eat at their buffet lunch.But for those subjects who received PYY, it was the pleasure centre of the brain that determined calorie intake.Previous research has shown that obese individuals have lower levels of PYY and release less of the hormone after a meal compared with normal weight people.Gastric bypass surgery has also been show to boost levels of PYY."We still have a lot to learn about PYY," she says.Neurologist and obesity researcher Clifford Saper at Harvard Medical School in Boston, says the study is interesting, as it is the first to explore cognitive aspects of eating behaviour with respect to an appetite hormone.What is more, he says, understanding the higher level drives behind eating behaviours is key for treating obesity."We humans are surrounded by all these tempting foods that taste good, and many people eat way past the point of metabolic satiety," Saper says.Have a question about dbSNP?May 25, 2006 1:38 PM
.Scott,Your Guide to Weight Loss.Health's Disease and Condition content is reviewed by our Medical Review Board
PYY UpdateA recent article from WebMD features updated research on the hormone PYY.Check out our story about PYY, Hormone May Prevent Overeating.Cholesterol ResourcesManage Your CholesterolWhich Fats Are Healthy?Most PopularCaloric IntakeThe South Beach DietJust the FAQs: How Many Calories Should I Consume?Be a GuideMore from About, Inc.The New York Times Company.Time QuotesGet QuotesFinance SearchMLD PPLUS CL A CTC (PYY)On Feb 1: 22.View All Reports for PYY ...To learn more about Yahoo!See also delay times for other exchanges.Fundamental company data provided by Capital IQ.
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