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Supraphysiological doses of intravenous PYY3-36 cause nausea, but no additional reduction in food intake
Author(s) -
Carel W. le Roux,
Cynthia-Michelle Borg,
Kevin G. Murphy,
Royce P Vincent,
Mohammad A. Ghatei,
Stephen R. Bloom
Publication year - 2008
Publication title -
annals of clinical biochemistry international journal of laboratory medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.6
H-Index - 80
eISSN - 1758-1001
pISSN - 0004-5632
DOI - 10.1258/acb.2007.007068
Subject(s) - nausea , appetite , peptide yy , medicine , food intake , endocrinology , neuropeptide , neuropeptide y receptor , receptor
Background Peptide YY (PYY 3-36 ) infused to levels within the physiological range reduces appetite and food intake in humans without nausea. However, PYY 3-36 has previously been shown to cause nausea at higher doses.Methods We studied the relationship of PYY 3-36 , nausea and food intake in six volunteers, using three different PYY 3-36 preparations infused to achieve supraphysiological PYY plasma levels.Results Supraphysiological levels of PYY caused nausea in five subjects ( P < 0.05). Although PYY 3-36 increased satiety ( P < 0.05) and reduced food intake ( P < 0.05), no greater enhancement of satiety or inhibition of food intake was observed compared with previous reports.Conclusions This study cautions against the use of supraphysiological doses of PYY 3-36 as it may increase nausea with no benefit in food reduction.

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