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1 ml TB syringes with 25 G needle

公司名称: BD
产品编号: 309626
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A Triple-challenge Mouse Model of Allergic Airway Disease, Primary Influenza Infection, and Secondary Bacterial Infection
Author:
Date:
2020-04-20
[Abstract]  Asthma is a global problem that affects millions of individuals. An increased risk of respiratory viral and bacterial infections is one of the complications of asthma. We recently reported that mice with ovalbumin-induced allergic airway disease (AAD) are protected against influenza-Streptococcus pneumoniae co-infection. Here, we describe in detail a protocol on how to induce AAD and influenza-S. pneumoniae co-infection in mice and to evaluate the specific roles of asthma on immunity to viral and bacterial pathogens in the hope of translating findings to benefit asthmatic ... [摘要]  [摘要] 哮喘是一个全球性问题,影响着数以百万计的人。呼吸道病毒和细菌感染的风险增加是哮喘的并发症之一。我们最近报道说,患有卵白蛋白诱发的过敏性气道疾病(AAD)的小鼠可以预防流行性感冒肺炎链球菌合并感染。在这里,我们详细描述议定书中关于如何诱导AAD和流行性感冒肺炎链球菌合并感染的小鼠并要评估的具体作用哮喘在抗干扰性病毒和细菌病原体的希望翻译发现以使哮喘患者受益。

[背景] 全球患病个体与哮喘的增加,随着300亿目前的痛苦和额外的100万个新发生率预测到2025年(生菜等,2017) 。由于中改变的免疫系统,哮喘的个体被认为具有风险增加易感性的流感感染的季节性和大流行性流感感染可导致并发Bacteri 铝感染可导致气道呼吸窘迫综合征,潜在的危及生命的疾病(Gilca 等,2011) 。无论是否哮喘病是在最近的2009年H1N1大流行期间,哮喘患者更容易因流感住院,但临床数据也表明哮喘患者死亡或需要ICU的可能性较小与没有哮喘的人相比,流感大流行期间大多数死亡不是由每次入院的病毒感染引起的。本身,但实际上是由于继发细菌感染引起的并发症(Morens 等人,2008; MacIntyre 等人,2018)。我们先前曾报道患有AAD的小鼠对流感病毒或肺炎链球菌的单次感染具有抗性(Furuya 等人,2015; Sanfilippo ...

Flow Cytometric Quantification of Fatty Acid Uptake by Mycobacterium tuberculosis in Macrophages
Author:
Date:
2018-02-20
[Abstract]  Mycobacterium tuberculosis (Mtb) has evolved to assimilate fatty acids from its host. However, until recently, there was no reliable way to quantify fatty acid uptake by the bacteria during host cell infection. Here we describe a new method to quantify fatty acid uptake by intracellular bacilli. We infect macrophages with Mtb constitutively expressing mCherry and then metabolically label them with Bodipy-palmitate. Following the labeling procedure, we isolate Mtb-containing phagosomes on a sucrose cushion and disrupt the phagosomes with detergent. After extensive washes, the isolated ... [摘要]  结核分枝杆菌(Mtb)已经发展为从其宿主吸收脂肪酸。然而,直到最近,还没有可靠的方法来量化宿主细胞感染期间细菌对脂肪酸的摄取。在这里,我们描述了一种新的方法来量化细胞内杆菌对脂肪酸的摄取。我们用Mtb组成性表达mCherry感染巨噬细胞,然后用Bodipy-palmitate代谢标记它们。标记程序后,我们在蔗糖垫上分离含有Mtb的吞噬体,并用去污剂破坏吞噬体。大量洗涤后,通过流式细胞术分析分离的细菌以确定与细菌相关的Bodipy-棕榈酸酯信号的水平。使用液体培养物中脂肪酸摄取缺陷的Mtb突变株,我们确定该突变体在巨噬细胞感染期间同化比野生型菌株少10倍的Bodipy-棕榈酸酯。脂肪酸摄取的这种定量方法可用于进一步鉴定参与细胞内Mtb和可能的其他细菌的脂质摄取的途径。

【背景】结核分枝杆菌(Mtb)同化宿主来源的脂质(脂肪酸和胆固醇)的能力使得病原体能够在其宿主内存活(Russell等人,2010; Lovewell 等人,2016)。在小鼠感染期间和在人肺组织中,通过巨噬细胞内的Mtb上调胆固醇和脂肪酸代谢相关基因来支持该想法(Schnappinger等人,2003; Rachman等人,2006; Rohde等人,2007;Fontán等人,2008; Tailleux等人,2008; Homolka et al。,2010; Rohde et ...

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