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NTIS 바로가기Journal of milk science and biotechnology = 한국유가공학회지, v.37 no.1, 2019년, pp.15 - 26
이주은 (중앙대학교 동물생명공학과) , 김근배 (중앙대학교 동물생명공학과)
A common belief is that human milk is sterile. However, the development of culture-independent molecular methods, especially Next Generation Sequencing, has revealed that human milk harbors diverse and rich bacterial communities. Although studies aimed at characterizing the microbiota of human milk ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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“core”bacterial community에 속하는 세균은? | 속(genus) 수준에서의 생태계 분석 자료는 상당히 풍부하고 다양한 세균 군집을 나타냈지만, 모든 표본이 동일하게 보유한 세균 집단은 9개의 속(genus)뿐이었다. 저자는 이들을 “core”bacterial community라고 칭했으며, 여기 엔 Staphylococcus, Streptococcus, Serratia, Pseudomonas, Corynebacterium, Ralstonia, Propionibacterium, Sphingomonas, Bradyrhizobium 이 포함된다. 또한, 핵심 세균 집단은 전 체 조작 분류 단위(operational taxonomic unit, OTU)의 52%를 차지하는 것으로 나타났다. | |
모유에 존재하는 미생물의 유입 경로는? | 모유에 존재하는 미생물들이 어떻게 유입된 것인지 확실하지 않지만 크게 두 가지 경로로 추측하고 있다. 유선관을 통해 외부로부터 유입 되거나, entero-mammary pathway를 통해 소화관에서 기인하거나, 두 경로 모두를 통해 유입될 수 있을 것이다(Fernándeza et al., 2013; Jost et al. | |
분자적 기법을 통한 모유내 세균 분석 결과는? | 보다 최근에는 분자적 기법을 사용함으로써 특정 DNA 단편의 변이를 기반으로 세균 을 분류할 수 있게 되었다. 여러 연구진들은 분자적 기법을 통해 모유를 분석했고, 산모의 유방염 유무와 상관없이 모유에 풍부하고 다양한 세균 집단이 존재함을 밝혔다. 특히, 차세대 염기서열 분석 법(Next Generation Sequencing, NGS)의 적용을 통해서 모유에 존재하는 세균의 전체적인 구성, 그 중에서도 배양기법에 의존적인 방법으로는 확인하기 어려운 혐기성 세균에 대한 전례 없는 식견들 을 제공했다(McGuire & McGuire, 2015). |
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