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公开(公告)号：US20160251694A1
公开(公告)日：2016-09-01
申请号：US14113354
申请日：2011-07-29
CPC分类号： C12Q1/04 , G01N21/77 , G01N33/6851 , G01N2021/7786 , G01N2800/26
摘要： The invention relates to methods and instruments for the rapid detection and rapid mass spectrometric identification of microbial infective agents in blood or other body fluids. The invention recognizes that blood is not a good environment for the cultivation of microbes and provides a method which (a) largely destroys or dissolves the human particles in body fluids, such as erythrocytes and leukocytes in blood, without impairing the ability of the microbes to reproduce, (b) separates the microbial pathogens from the fluid, (c) cultivates them in a nutrient broth which contains none of the antimicrobial components of the body fluids, (d) separates them from the nutrient broth, and (e) identifies the microbes by a mass spectrum of the microbial proteins. The dissolution of the human particles also releases the microbes nesting in macrophages. The cultivation in an optically clear nutrient broth with optimum composition not only accelerates the propagation of the microbes compared to all other cultivation methods, but also makes it possible to continuously measure their quantitative growth starting from a low microbe density. This firstly allows the mass spectrometric identification to be carried out at the earliest possible time, secondly provides a positive detection of microbes far ahead of their identification, which can be lifesaving for the patient; and thirdly makes it possible to start the determination of resistances early.
摘要翻译： 本发明涉及快速检测和快速质谱鉴定血液或其他体液中微生物感染因子的方法和仪器。 本发明认识到，血液不是培养微生物的良好环境，并且提供了（a）在体内流体中大量地破坏或溶解血液中的红细胞和白细胞的方法，而不会损害微生物的能力 （b）将微生物病原体与流体分离，（c）将其培养在不含体液抗微生物成分的营养肉汤中，（d）将其与营养液分离，以及（e） 微生物通过微生物蛋白质的质谱。 人类颗粒的溶解也释放出嵌入巨噬细胞的微生物。 在具有最佳组成的光学透明营养肉汤中培养不仅加速微生物与所有其他培养方法相比的繁殖，而且可以从低微生物密度开始连续测量其定量生长。 这首先允许在早期进行质谱鉴定，其次提供远远超过其鉴定的微生物的阳性检测，这可以为患者挽救; 第三，可以提前开始确定电阻。
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