2015年6月9日 訊 /生物谷BIOON/ --金黃色葡萄球菌是一種常見的在人體鼻腔中繁殖的細菌,攜帶該菌的個體往往容易引發金黃色葡萄球菌的感染;近日,來自國家血清研究所(Statens Serum Institut)等處的研究人員通過研究表明,我們或許可以利用一些良性的細菌來將金黃色葡萄球菌「趕出」體外;研究者指出,在確定細菌的繁殖能力上,人體機體的環境遠比基因更加重要,而且有時候某些常見的鼻腔細菌就可以抑制金黃色葡萄球菌在鼻腔中的繁殖。
相關研究結果發表於國際雜誌Science Advances上,Lance B. Price博士表示,本文研究非常重要,因為我們發現鼻腔中的細菌並不是由機體的基因來確定的,因此我們就可以引入良性細菌來抵禦諸如金黃色葡萄球菌等致病菌的感染;利用益生菌促進機體的健康或許在我們日常生活中非常常見,而如今研究者或許就會利用這一策略來抑制金黃色葡萄球菌的感染。
文章中,研究者對來自丹麥的46名同卵雙胞胎和43名異卵雙鮑胎的數據進行分析,結果發現這些個體鼻腔中的微生物組並沒有存在特殊細菌的遺傳原因。而所謂的鼻腔微生物組則是一系列生活在鼻腔中的細菌的總體;此前有研究發現金黃色葡萄球菌對不同性別個體的感染風險或存在差異,男性或許感染金黃色葡萄球菌的風險較高一些,而本文研究中研究者利用DNA測序的技術發現,金黃色葡萄球菌在鼻腔中繁殖感染的風險或許並沒有性別差異。
通過進一步研究,研究者發現,一種生活在皮膚表面的無害細菌棒桿菌,其或許可以有效抵禦金黃色葡萄球菌的繁殖以及其引發的感染;而研究人員認為本文研究或為引入益生菌來幫助有效抵禦金黃色葡萄球菌的感染或提供了新的幫助,下一步研究者將在實驗室中對模型進行試驗來證實這一點。(生物谷Bioon.com)
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Staphylococcus aureus and the ecology of the nasal microbiome
C. M. Liu, L. B. Price, B. A. Hungate, A. G. Abraham, L. A. Larsen, K. Christensen, M. Stegger, R. Skov, P. S. Andersen.
The multi-center research team looked at data taken from 46 identical twins and 43 fraternal twins in the Danish Twin Registry, one of the oldest registries of twins in the world. "We showed that there is no genetically inherent cause for specific bacteria in the nasal microbiome," said senior author Dr. Paal Skytt Andersen. Dr. Andersen is head of the Laboratory for Microbial Pathogenesis and Host Susceptibility in the Department of Microbiology and Infection Control at the Statens Serum Institut and an Adjunct Professor at the University of Copenhagen. The so-called nasal microbiome is the collection of microbes living deep within the nasal cavity. This research might ultimately lead to interventions that could route Staph from the nose and thus prevent dangerous infections, including those caused by antibiotic resistant Staph, the authors say. Studies suggest drug-resistant Staph infections kill more than 18,000 people in the United States every year. The researchers also looked for possible gender differences and found that contrary to past studies that showed that men are at higher risk for Staph nasal colonization -- this study, using DNA sequencing, found that there is no difference between men and woman in the likelihood of nasal colonization by Staph.