Pre-Meal Effect of Whey Proteins on Metabolic Parameters in Subjects with and without Type 2 Diabetes: A Randomized, Crossover Trial

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Ann Bjørnshave, Kjeld Hermansen, Jens Juul Holst

Diabetic dyslipidemia with elevated postprandial triglyceride (TG) responses is characteristic in type 2 diabetes (T2D). Diet and meal timing can modify postprandial lipemia (PPL). The impact of a pre-meal of whey proteins (WP) on lipid metabolism is unidentified. We determined whether a WP pre-meal prior to a fat-rich meal influences TG and apolipoprotein B-48 (ApoB-48) responses differentially in patients with and without T2D. Two matched groups of 12 subjects with and without T2D accomplished an acute, randomized, cross-over trial. A pre-meal of WP (20 g) or water (control) was consumed 15 min before a fat-rich meal (supplemented with 20 g WP in case of water pre-meal). Postprandial responses were examined during a 360-min period. A WP pre-meal significantly increased postprandial concentrations of insulin (P< 0.0001), glucagon (P< 0.0001) and glucose-dependent insulinotropic peptide (GIP) (P< 0.0001) in subjects with and without T2D. We detected no effects of the WP pre-meal on TG, ApoB-48, or non-esterified fatty acids (NEFA) responses to the fat-rich meal in either group. Paracetamol absorption i.e. gastric emptying was delayed by the WP pre-meal (P= 0.039). In conclusion, the WP pre-meal induced similar hormone and lipid responses in subjects with and without T2D. Thus, the WP pre-meal enhanced insulin, glucagon and GIP responses but did not influence lipid or glucose responses. In addition, we demonstrated that a WP pre-meal reduced gastric emptying in both groups.

Original languageEnglish
Article number122
JournalNutrients
Volume10
Issue number2
Pages (from-to)1-13
ISSN2072-6643
DOIs
Publication statusPublished - 2018

    Research areas

  • Journal Article, Type 2 diabetes, Postprandial lipemia, Pre-meal, Whey proteins, whey proteins, type 2 diabetes, pre-meal, postprandial lipemia

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