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http://dx.doi.org/10.3746/pnf.2016.21.1.57

Changes of Mouse Gut Microbiota Diversity and Composition by Modulating Dietary Protein and Carbohydrate Contents: A Pilot Study  

Kim, Eunjung (Department of Food Science and Nutrition, Catholic University of Daegu)
Kim, Dan-Bi (Department of Food Science and Nutrition, Catholic University of Daegu)
Park, Jae-Yong (Department of Food Science and Nutrition, Catholic University of Daegu)
Publication Information
Preventive Nutrition and Food Science / v.21, no.1, 2016 , pp. 57-61 More about this Journal
Abstract
Dietary proteins influence colorectal cancer (CRC) risk, depending on their quantity and quality. Here, using pyrosequencing, we compared the fecal microbiota composition in Balb/c mice fed either a normal protein/carbohydrate diet (ND, 20% casein and 68% carbohydrate) or a high-protein/low-carbohydrate diet (HPLCD, 30% casein and 57% carbohydrate). The results showed that HPLCD feeding for 2 weeks reduced the diversity and altered the composition of the microbiota compared with the ND mice, which included a decrease in the proportion of the family Lachnospiraceae and Ruminococcaceae and increases in the proportions of the genus Bacteroides and Parabacteroides, especially the species EF09600_s and EF604598_s. Similar changes were reported in patients with inflammatory bowel disease, and in mouse models of CRC and colitis, respectively. This suggests that HPLCD may lead to a deleterious luminal environment and may have adverse effects on the intestinal health of individuals consuming such a diet.
Keywords
gut microbiota; high protein diet; low carbohydrate diet; pyrosequencing; mouse;
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