Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 477429
Title Taste matters-effects of bypassing oral stimulation on hormone and appetite responses
Author(s) Spetter, M.S.; Mars, M.; Viergever, M.A.; Graaf, C. de; Smeets, P.A.M.
Source Physiology and Behavior 137 (2014). - ISSN 0031-9384 - p. 9 - 17.
DOI https://doi.org/10.1016/j.physbeh.2014.06.021
Department(s) Global Nutrition
Sensory Science and Eating Behaviour
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2014
Keyword(s) cephalic phase responses - placebo-controlled trial - sensory-specific satiety - plasma ghrelin levels - food-intake - eating behavior - short-term - circulating ghrelin - energy-intake - c-peptide
Abstract The interaction between oral and gastric signals is an important part of food intake regulation. Previous studies suggest that bypassing oral stimulation diminishes the suppression of hunger and increases gastric emptying rate. However, the role of appetite hormones, like cholecystokinin-8 and ghrelin, in this process is still unclear. Our objective was to determine the contributions of gastric and oral stimulation to subsequent appetite and hormone responses and their effect on ad libitum intake. Fourteen healthy male subjects (age 24.6 ± 3.8y, BMI 22.3 ± 1.6 kg/m2) completed a randomized, single-blinded, cross-over experiment with 3 treatment-sessions: 1) Stomach distention: naso-gastric infusion of 500 mL/0 kJ water, 2) Stomach distention with caloric content: naso-gastric infusion of 500 mL/1770 kJ chocolate milk, and 3) Stomach distention with caloric content and oral exposure: oral administration of 500 mL/1770 kJ chocolate milk. Changes in appetite ratings and plasma glucose, insulin, cholecystokinin-8, and active and total ghrelin concentrations were measured at fixed time-points up to 30 min after infusion or oral administration. Subsequently, subjects consumed an ad libitum buffet meal. Oral administration reduced appetite ratings more than both naso-gastric infusions (P <0.0001). Gastric infusion of a caloric load increased insulin and cholecystokinin-8 and decreased total ghrelin concentrations more than ingestion (all P <0.0001). No differences in active ghrelin response were observed between conditions. Ad libitum intake did not differ between oral and gastric administration of chocolate milk (P > 0.05). Thus, gastric infusion of nutrients induces greater appetite hormone responses than ingestion does. These data provide novel and additional evidence that bypassing oral stimulation not only affects the appetite profile but also increases anorexigenic hormone responses, probably driven in part by faster gastric emptying. This confirms the idea that learned associations between sensory characteristics and associated metabolic consequences serve to adapt hormone responses to nutrient content. These findings underscore the importance of oral stimulation in the regulation of food intake.
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