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NaCl

氯化钠

公司名称: Carl Roth
产品编号: 9265.1
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Highly Accurate Real-time Measurement of Rapid Hydrogen-peroxide Dynamics in Fungi
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Date:
2016-12-20
[Abstract]  Reactive oxygen species (ROS) are unavoidable by-products of aerobic metabolism. Despite beneficial aspects as a signaling molecule, ROS are principally recognized as harmful agents that act on nucleic acids, proteins and lipids. Reactive oxygen species, and, in particular, hydrogen peroxide (H2O2), are deployed as defense molecules across kingdoms, e.g., by plants in order to defeat invading pathogens like fungi. Necrotrophic plant pathogenic fungi themselves secrete H2O2 to induce host cell death and facilitate infection. Hydrogen ... [摘要]  活性氧(ROS)是有氧代谢的副产物。尽管作为信号分子的有利方面,ROS主要被认为是作用于核酸,蛋白质和脂质的有害物质。反应性氧物质,特别是过氧化氢(H 2 O 2 O 2),作为防御分子跨越诸如,通过植物为了击败入侵病原体如真菌。营养不良的植物致病真菌本身分泌H 2 O 2 O 2以诱导宿主细胞死亡并促进感染。过氧化氢在一定程度上可以通过膜自由扩散。为了能够监测真菌中的细胞内过氧化氢动力学,我们最近在丝状植物病原体禾谷镰刀菌(Mentges and Bormann,2015)中建立了多功能的HyPer成像技术。 HyPer由插入到原核H 2 O 2 O 2 - 感觉蛋白OxyR的调节结构域(RD)中的循环置换的黄色荧光蛋白(cpYFP)组成。 OxyR域使传感器高度特异于H 2 O 2 O 2。 HyPer的氧化增加了在488nm激发的cpYFP的荧光,并降低了在405nm激发的荧光,从而促进了比例式读数(Belousov等人,2006)。 HyPer原来是对pH敏感。 HyPer的H 2 O 2 O 2 - 感官域中的单个氨基酸突变使传感器对H 2 O 2不敏感。该记者称为SypHer,作为pH变化的对照。
   通过使用HyPer成像技术,我们可以证明:i)HyPer成像能够特异和准确地检测细胞内H 2 O 2 O 2平衡的快速变化,ii)。 ...

A Highly Efficient Method for Measuring Oxygen Consumption Rate in Fusarium graminearum
Author:
Date:
2016-08-05
[Abstract]  The filamentous ascomycete Fusarium graminearum is the causal agent of Fusarium head blight, a devastating disease of cereals with a worldwide distribution. Fusarium graminearum infections result in a quantitative yield reduction by impairing the growth of the kernels, and a qualitative reduction by poisoning the remaining kernels with mycotoxins toxic to animals and humans. The colonization of wheat florets by phytopathogenic fungus requires high-efficiency energy generation in the mitochondria (Bönnighausen et al., 2015). Mitochondrial activity in ... [摘要]  丝状子囊菌禾谷镰刀菌是镰刀菌的致病剂,其是具有全世界分布的谷物的毁灭性疾病。禾谷镰孢菌感染通过损害谷粒的生长导致定量的产量降低,并且通过用对动物和人有毒的霉菌毒素中毒剩余的谷粒来定性降低。植物病原真菌对小麦的定居需要线粒体中的高效能量产生(Bönighausen等人,2015)。微生物中的线粒体活性可以使用氧消耗速率(OCR)方法测量。在这里我们描述使用XF24细胞外通量分析仪评估真菌呼吸的方法。 Seahorse XF分析仪是基于微孔板的呼吸仪,其通过固定荧光团的荧光变化来测量氧消耗(Gerencser等人,2009)。多种线粒体参数可以通过应用线粒体底物和抑制剂来测量,所述线粒体底物和抑制剂在测定期间通过端口自动注射(Divakaruni等人,2014)。实验工作流程涉及接种分生孢子和应用线粒体功能的特异性抑制剂。真菌呼吸的分析代表了补充经典表型筛选的有价值的工具。

In vitro Dynamic Model of a Catheterized Bladder and Biofilm Assay
Author:
Date:
2015-01-20
[Abstract]  Biofilm formation on catheters is thought to contribute to persistence of catheter-associated urinary tract infections (CAUTI) which represent the most frequent nosocomial infections. Understanding of factors relevant for CAUTI pathogenesis and evaluation of new therapeutics or interference strategies requires a model system that mirrors the physico-chemical conditions prevailing in a catheterized human bladder. The described in vitro dynamic model of a catheterized bladder enables to emulate many of the characteristics of a catheterized human bladder albeit in the absence of a ... [摘要]  导管上的生物膜形成被认为有助于导管相关尿路感染(CAUTI)的持久性,其代表最常见的医院感染。 理解与CAUTI发病机理相关的因素和评价新的治疗或干扰策略需要一个反映导尿人膀胱中存在的物理化学条件的模型系统。 所描述的导管插入的膀胱的体外动态模型使得能够模拟导管插入的人膀胱的许多特征,尽管在没有膀胱上皮的情况下。 与原始模型系统(Stickler,et al。,1999)相比较小的修改允许导管的顶部10cm的温度维持,从而能够可再生地监测内部导管表面上的生物膜形成。

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