Article

Current Microbiology

, Volume 59, Issue 4, pp 439-445

First online:

Oral Administration of Live Bifidobacterium Substrains Isolated from Centenarians Enhances Intestinal Function in Mice

  • Haiying YangAffiliated withCollege of Food Science and Nutritional Engineering, China Agricultural University
  • , Aiping LiuAffiliated withMengNiu Diary Company
  • , Ming ZhangAffiliated withCollege of Food Science and Nutritional Engineering, China Agricultural University
  • , Salam A. IbrahimAffiliated withFood Microbiology and Biotechnology Laboratory, North Carolina A & T State University
  • , Zhihua PangAffiliated withCollege of Food Science and Nutritional Engineering, China Agricultural University
  • , Xiaojing LengAffiliated withCollege of Food Science and Nutritional Engineering, China Agricultural University
  • , Fazheng RenAffiliated withKey Laboratory of Functional Dairy, College of Food Science & Nutritional Engineering Email author 

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Abstract

We studied the effects of two bifidobacteria strains isolated from healthy centenarians on intestinal function in mice. Bifidobacterium adolescentis BBMN23 and Bifidobacterium longum BBMN68 were orally administrated to specific pathogen-free BALB/c mice at different doses (2 × 1011, 2 × 109, or 2 × 107 CFU/kg body weight) each day for 4 weeks. Villus height, crypt depth, villus width, and villus/crypt ratio (V/C) were determined. The content of duodenal secreted immunoglobulin A (sIgA) was also evaluated. There were clear increases in height and width of duodenal villi in both treated groups. Crypt depths were deeper in animals treated with BBMN23 than in controls, while depths were reduced in animals receiving BBMN68. The V/C ratio was increased after feeding with BBMN68, while BBMN23 had no significant effect. Both strains improved the sIgA content of the duodenum. These results suggest that BBMN23 and BBMN68 may improve intestinal digestion and ability and enhance immune barrier function in the intestine.