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논문 기본 정보

자료유형
학술저널
저자정보
Yun Ji-Hee (Department of Pharmacy, Sahmyook University) Yim Dong-sool (Department of Pharmacy, Sahmyook University) Kang Jin-Yang (Department of Pharmacy, Sahmyook University) Kang Byung-Yong (Research Institute for Life Science, Sahmyook University) Shin Eun-ah (Life Science and Biotechnology, Korea University) Chung Myung-Jun (Cellbiotech, Co. Ltd.) Kim Soo-Dong (Cellbiotech, Co. Ltd.) Baek Dae-Heoun (Cellbiotech, Co. Ltd.) Kim Kyungjae (Department of Pharmacy, Sahmyook University) Ha Nam-Joo (Department of Pharmacy, Sahmyook University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제28권 제6호
발행연도
2005.1
수록면
660 - 666 (7page)

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The intestinal microbiota are important to the host with regard to resistance they impart against bacterial infections and their involvement in mediating metabolic functions. Lactic acid producing bacteria such as Lactobacillus play an important physiological role in these matters. The aim of the present study was to isolate Lactobacillus sp. that inhibits enteric pathogens. Initially, 17 isolates from healthy Koreans were collected on Lactobacillus selective medium. Resistance of the isolates to antibiotics including rifampicin, streptomycin, clindamycin and vancomycin was measured. One of the isolate was identified as Lactobacillus ruminus on the basis of bacterial cell morphology, cultural characteristic and biochemical characteristics, 16S rRNA sequence analysis and PCR-RAPD. Antimicrobial activity of the bacterium against Vancomycin Intermediate Resistant Staphylococcus aureus (VISA) and Vancomycin-Resistant Enterococci (VRE) was measured. About $10^4$ cells of VISA or VRE were mixed with 1, 5, and 9 mL of L. ruminus SPM 0211 and the final volume was adjusted to 10 mL with brain heart infusion (BHI) broth. The cell suspension was incubated for 3, 6, 9, and 24 h, serially diluted and then plated on BHI agar plates. As numbers of L. ruminus SPM 0211 were increased, viable cell count of VISA and VRE decreased. The strongest antimicrobial activity of SPM 0211 was observed after 9 h incubation in any mixture, almost completely inhibiting the growth of these two bacteria. The results suggest that the freshly isolated L. ruminus SPM 0211 may be used as a pro-biotic microbe that prevents the colonization of enteric pathogens and can thereby promote good gastrointestinal health.

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