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Foods 2014, 3(2), 351-368; doi:10.3390/foods3020351

The Effect of Oral Intake of Low-Temperature-Processed Whey Protein Concentrate on Colitis and Gene Expression Profiles in Mice

1
United Graduate School of Agricultural Sciences, Iwate University, Ueda 3-18-8, Morioka, Iwate 020-8550, Japan
2
Department of Food Science, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho W2-11, Obihiro, Hokkaido 080-8555 Japan
3
Asama Chemical Co. LTD., Nihonbashi-kodenma-cho 20-3, Chuo-ku, Tokyo 103-0001, Japan
Deceased on 17 November 2012.
*
Author to whom correspondence should be addressed.
Received: 30 April 2014 / Revised: 30 May 2014 / Accepted: 3 June 2014 / Published: 13 June 2014
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Abstract

Inflammatory bowel disease (IBD) is an autoimmune disease of unknown etiology and can lead to inflammation and cancer. Whey proteins contain many bioactive peptides with potential health benefits against IBD. We investigated the effect of low-temperature-processed whey protein concentrate (LWPC) on the suppression of IBD by using a dextran sodium sulfate (DSS)-induced colitis model in BALB/c mice. Oral intake of LWPC resulted in improved recovery of body weight in mice. Histological analysis showed that the epithelium cells of LWPC-treated mice were healthier and that lymphocyte infiltration was reduced. The increase in mucin due to the LWPC also reflected reduced inflammation in the colon. Transcriptome analysis of the colon by DNA microarrays revealed marked downregulation of genes related to immune responses in LWPC-fed mice. In particular, the expression of interferon gamma receptor 2 (Ifngr2) and guanylate-binding proteins (GBPs) was increased by DSS treatment and decreased in LWPC-fed mice. These findings suggest that LWPCs suppress DSS-induced inflammation in the colon by suppressing the signaling of these cytokines. Our findings suggest that LWPCs would be an effective food resource for suppressing IBD symptoms. View Full-Text
Keywords: colitis; anti-inflammation; whey protein; DNA microarray; immunomodulation colitis; anti-inflammation; whey protein; DNA microarray; immunomodulation
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MDPI and ACS Style

Jayatilake, S.; Arai, K.; Kumada, N.; Ishida, Y.; Tanaka, I.; Iwatsuki, S.; Ohwada, T.; Ohnishi, M.; Tokuji, Y.; Kinoshita, M. The Effect of Oral Intake of Low-Temperature-Processed Whey Protein Concentrate on Colitis and Gene Expression Profiles in Mice. Foods 2014, 3, 351-368.

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