Leiden University Scholarly Publications

Jonker, J.T.; Wijngaarden, M.A.; Kloek, J.; Groeneveld, Y.; Gerhardt, C.; Brand, R.; ... ; Smit, J.W.A. 2011

Effects of low doses of casein hydrolysate on post-challenge glucose and insulin levels

Article / Letter to editor

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Background: Ingestion of high doses of casein hydrolysate stimulates insulin secretion in healthy subjects and patients with type 2 diabetes. The effects of low doses have not been studied. The aim... Show moreBackground: Ingestion of high doses of casein hydrolysate stimulates insulin secretion in healthy subjects and patients with type 2 diabetes. The effects of low doses have not been studied. The aim of this study was to assess the effect of lower doses of a casein hydrolysate on the glucose and insulin responses to an oral glucose tolerance test in patients with type 2 diabetes. Methods: In this randomized, placebo-controlled, double-blind study, thirteen patients with type 2 diabetes (age: 58 +/- 1 years) were studied. Glucose, insulin and C-peptide responses were determined after the oral administration of 0 (control), 6 or 12 g protein hydrolysate in combination with 50 g carbohydrate. Results: Twelve grams of casein hydrolysate, but not 6 g, elevated insulin levels and decreased glucose levels post-challenge. These changes over time were not large enough to also affect the total area under the curve of glucose and insulin. C-peptide levels did not change after both treatments. Conclusion: Ingestion of six grams of casein hydrolysate did not affect glucose or insulin responses. Intake of 12 g of casein hydrolysate has a small positive effect on post-challenge insulin and glucose levels in patients with type 2 diabetes. (C) 2011 European Federation of Internal Medicine. Published by Elsevier B.V. All rights reserved. Show less