Environmental Analysis Health and Toxicology

환경독성보건학회 (The Korean Society of Environmental Health and Toxicology)
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유산균의 항균효과와 대식세포 활성화

Antibacterial Activity and Macrophage Activation of Lactic Acid Bacteria

  • 발행 : 2007.12.31
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초록

유산균(Lactic acid bacteria)은 Escherichia coli와 Salmonella typhimurium과 같은 병원균에 항균 활성을 지니며 면역 증강효과를 나타내는 등 건강에 이로운 다양한 역할을 한다. 유산균에 의한 항균 효과는 E. coli와 S. typhiumurium에 대항하는 항균 활성으로 측정되어 졌으며, 면역 증강 효과는 유산균을 처리한 RAW264.7 대식세포의 활성화로 측정하였다. Lactobacillus acidophilus, Streptococcus thermophilus, Bifidobacterium bifidum의 E. coli와 S. typhimurium에 대한 항균활성은 9시간 이상 혼합 배양하였을 때 가장 좋은 항균효과를 나타내었고 E. coli와 S. typhiumurium 두 균주가 9시간 이후에는 모두 콜로니를 형성하지 않았다. RAW264.7 세포는 유산균에 의한 NO와 $TNF-{\alpha}$의 생성과 대식세포의 형태 변화를 알아보기 위한 대식세포로서 이용되었다. NO와 $TNF-{\alpha}$의 생성은 유산균을 처리한 RAW264.7세포의 24,48시간 배양 시 농도 의존적으로 증가하였고 대식세포의 형태 변화 역시 유산균에 의해 영향을 받았음을 확인할 수 있었다. 이를 통하여 (주)쎌바이텍으로부터 분양받은 유산균은 항균활성과 대식세포의 활성을 유도하여 면역을 증강시키는 효과를 지니고 있음을 in vitro 실험을 통해 확인하였다.

키워드

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