Wheat-fibre-induced changes of postprandial peptide YY and ghrelin responses are not associated with acute alterations of satiety

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Martin O Weickert, Joachim Spranger, Jens Juul Holst, Bärbel Otto, Corinna Koebnick, Matthias Möhlig, Andreas F H Pfeiffer

Weight gain and risk of type 2 diabetes are inversely associated with a high intake of insoluble cereal fibres. Because nutrient-induced changes of 'satiety hormones' from the gut may play a role in this process, we evaluated the effects of purified insoluble fibres on postprandial responses of plasma peptide YY (PYY), serum ghrelin and satiety as secondary outcome measures of a study investigating effects of cereal fibres on parameters of glucose metabolism. Fourteen healthy women were studied on six occasions in a randomized, single-blind, controlled crossover design. After 24 h run-in periods and 10 h overnight fasts, subjects ingested isoenergetic and macronutrient matched portions of control white bread or fibre-enriched bread (wheat-fibre or oat-fibre) at 08.15 hours. Gut hormones and hunger scores were measured for 300 min. Basal PYY and ghrelin concentrations were not different between the test meals (P>0.15). Postprandial responses of PYY and ghrelin were blunted after the intake of wheat-fibre (total area under the curve (AUC) PYY, 177.9 (SEM 8.1) (pmol/l) min; P=0.016; ghrelin 51.0 (SEM 2.5) (pmol/l) min; P=0.003), but not after oat-fibre (PYY 226.7 (SEM 25.7) (pmol/l) min; P>0.15; ghrelin 46.2 (SEM 1.6) (pmol/l) min; P=0.127), compared to control (PYY 247.5 (SEM 25.6) (pmol/l) min; ghrelin 42.5 (SEM 1.3) (pmol/l) min). Postprandial hunger scores were unaffected by the different test meals (P>0.15). Thus, oat- and wheat-fibre consumption result in different postprandial responses of PYY and ghrelin, but interestingly do not differ in satiety effects.

Original languageEnglish
JournalThe British Journal of Nutrition
Volume96
Issue number5
Pages (from-to)795-8
Number of pages4
ISSN0007-1145
Publication statusPublished - Nov 2006

    Research areas

  • Avena sativa, Bread, Cross-Over Studies, Dietary Fiber, Female, Ghrelin, Humans, Hunger, Peptide Hormones, Peptide YY, Postprandial Period, Satiety Response, Single-Blind Method, Triticum

ID: 132050997