J Biomed Transl Res.
2018 Dec;19(4):65-72. 10.12729/jbtr.2018.19.4.065.
The immune enhancing effects and characteristics of Bifidobacterium longum and Bifidobacterium breve for the probiotic use in humans and animals
- Affiliations
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- 1Laboratory of Bacteriology College of Veterinary Medicine Chungbuk National University , Cheongju 28644, Korea. wklee@cbu.ac.kr
- KMID: 2435741
- DOI: http://doi.org/10.12729/jbtr.2018.19.4.065
Abstract
- The purpose of this study was to investigate probiotic characteristics and immune enhancing effects of Bifidobacterium (B.) longum KBB1-26 and BIF-4, B. breve KBB5-22 isolated from human intestine for probiotic use in humans and animals. We measured acid, bile and heat tolerance, antimicrobial activity against pathogenic bacteria, Escherichia (E.) coli, Salmonella (S.) Enteritidis, Staphylococcus (S.) aureus, and Listeria (L.) monocytogenes. Immune enhancing effects of B. longum and B. breve were investigated by measuring nitric oxide (NO), nuclear factor (NF-κb), interleukin-1β (IL-1β), interleukin-6 (IL-6), interleukin-12 (IL-12) and tumor necrosis factor- α (TNF- α) in RAW 264.7 cells or RAW BLUE cells. B. longum KBB1-26 was survived at pH 2.0. B. longum KBB1-26 and BIF-4, B. breve KBB5-22 also showed tolerance to 0.3% of oxgall bile salt. B. longum KBB1-26 was able to survive at 70 ℃ and 80 ℃ for 20 min. KBB1-26 showed the antimicrobial inhibition zone to pathogenic bacteria such as E. coli (12 mm), S. Enteritidis (14 mm), S. aureus (14 mm) and L. monocytogenes (41 mm). The production of NO (4.5 ± 0.00μM/mL) and IL-1β (39.7 ± 0.55pg/mL) of KBB1-26 significantly higher than BIF-4 and KBB5-22, respectively. In addition, KBB1-26 and KBB5-22 induce the production of high level of TNF-α and IL-6 in macrophages. Collectively, B. longum KBB1-26 have acid, bile, heat tolerance, antimicrobial activity and immune enhancing effects. These results suggest that KBB1-26 can be used as probiotics for humans and animals.
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