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Erythromycin

Company: Sigma-Aldrich
Catalog#: E5389
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Quantification of the Composition Dynamics of a Maize Root-associated Simplified Bacterial Community and Evaluation of Its Biological Control Effect
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Date:
2018-06-20
[Abstract]  Besides analyzing the composition and dynamics of microbial communities, plant microbiome research aims to understanding the mechanism of plant microbiota assembly and their biological functions. Here, we describe procedures to investigate the role of bacterial interspecies interactions in root microbiome assembly and the beneficial effects of the root microbiota on hosts by using a maize root-associated simplified seven-species (Stenotrophomonas maltophilia, Ochrobactrum pituitosum, Curtobacterium pusillum, Enterobacter cloacae, Chryseobacterium indologenes, Herbaspirillum frisingense and Pseudomonas putida) synthetic bacterial community described in our previous work. Surface-sterilized maize seeds were grown in a ... [摘要]  除了分析微生物群落的组成和动态外,植物微生物群落研究的目的在于了解植物微生物群落组装的机制及其生物学功能。在这里,我们描述了通过使用与玉米根相关的简化的七种物种(嗜麦芽窄食单胞菌(Stenotrophomonas maltophilia),)来研究细菌种间相互作用在根微生物群组装中的作用以及根菌群对宿主的有益影响的程序。 Ochrobactrum pituitosum ,Curtobacterium pusillum ,阴沟肠杆菌, Chryseobacterium indologenes ,<在我们以前的工作中描述过的假单胞菌(pseudomonas putida))合成细菌群落。表面灭菌的玉米种子在含有多种细菌的悬浮液中浸泡后,在基于双管生长室的非生物体系中生长。通过对7种菌株中的每种菌株选择性培养基的培养依赖性方法追踪定殖在玉米根部的细菌群组成的动态。通过监测社区结构的变化来评估细菌相互作用对社区组装的影响。通过量化(1)真菌植物病原体,种子表面上的fusarium="" verticillioides和(2)幼苗枯萎的严重程度来评估简化的7种群落的植物保护效果真菌引起的疾病,在细菌群落的存在和不存在的情况下。我们的方案将作为研究实验室条件下植物="" -=""> ...

Ex vivo Model of Human Aortic Valve Bacterial Colonization
Author:
Date:
2017-06-05
[Abstract]  The interaction of pathogens with host tissues is a key step towards successful colonization and establishment of an infection. During bacteremia, pathogens can virtually reach all organs in the human body (e.g., heart, kidney, spleen) but host immunity, blood flow and tissue integrity generally prevents bacterial colonization. Yet, patients with cardiac conditions (e.g., congenital heart disease, atherosclerosis, calcific aortic stenosis, prosthetic valve recipients) are at a higher risk of bacterial infection. This protocol was adapted from an established ex vivo porcine heart adhesion model and takes advantage of the availability of heart tissues obtained from patients that underwent aortic valve replacement surgery. In this protocol, fresh tissues are used ... [摘要]  病原体与宿主组织的相互作用是成功定居和建立感染的关键步骤。在菌血症期间,病原体几乎可以达到人体内的所有器官(例如心脏,肾脏,脾脏),但是宿主的免疫力,血流和组织完整性通常防止细菌定植。然而,患有心脏病(例如先天性心脏病,动脉粥样硬化,钙化性主动脉狭窄,人工瓣膜受体)的患者处于较高的细菌感染风险。该方案从已建立的远端猪心脏粘连模型改编而成,并且利用从经历主动脉瓣置换手术的患者获得的心脏组织的可用性。在该方案中,使用新鲜组织来评估与心血管感染相关的细菌病原体(例如变形链球菌)与人主动脉瓣组织的直接相互作用。

背景 口腔病原体变形链球菌被认为是龋齿中的主要病原体,也可以与感染性心内膜炎(IE)等口腔外感染有关(Banas,2004)。 ...

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