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Sodium hydrogen carbonate

Company: Merck
Catalog#: 106329
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Maintenance of Schmidtea mediterranea in the Laboratory
Author:
Date:
2018-10-05
[Abstract]  In the last years, planarians have emerged as a unique model animal for studying regeneration and stem cells biology. Although their remarkable regenerative abilities are known for a long time, only recently the molecular tools to understand the biology of planarian stem cells and the fundamentals of their regenerative process have been established. This boost is due to the availability of a sequenced genome and the development of new technologies, such as interference RNA and next-generation sequencing, which facilitate studies of planarian regeneration at the molecular and genetic level. For these reasons, maintain a healthy and stable planarian population in the laboratory is essential to perform reproducible experiments. Here we detail the protocol used in our laboratory to maintain ... [摘要]  在过去的几年中,涡虫已成为研究再生和干细胞生物学的独特模型动物。 虽然它们具有显着的再生能力,但很长一段时间以来,人们已经建立了理解涡虫干细胞生物学及其再生过程基础的分子工具。 这种推动是由于测序基因组的可用性以及干扰RNA和新一代测序等新技术的发展,这些技术促进了分子和基因水平的涡虫再生研究。 由于这些原因,在实验室中保持健康稳定的涡虫种群对于进行可重复的实验至关重要。 在这里,我们详细介绍了我们实验室使用的协议,以维护最广泛作为模型的涡虫种类 Schmidtea mediterranea 。
【背景】涡虫是双侧对称的扁形动物,是超级寄主lophotroczoa的成员。有陆地,海洋和淡水涡虫。它们主要捕食受伤的昆虫,昆虫幼虫和其他无脊椎动物。涡虫是缺乏循环系统,骨骼系统和呼吸系统的三倍体和动脉粥样硬化动物(图1A)。这些动物在几天内截肢后具有恢复身体任何缺失部位的惊人能力(Reddien和Alvarado,2004; Salo,2006);并根据环境条件和食物供应情况进行生长和驯化(Baguñá和Romero,1981)。这些特征是由于存在成体干细胞群 - 称为新生细胞 - 能够产生任何涡虫细胞类型(Reddien和Alvarado,2004; Salo,2006)。涡虫的高再生能力,具有独特的全能干细胞系统,为研究细胞更新,再生和干细胞调节提供了理想的模型。 ...

Platelet Migration and Bacterial Trapping Assay under Flow
Author:
Date:
2018-09-20
[Abstract]  Blood platelets are critical for hemostasis and thrombosis, but also play diverse roles during immune responses. We have recently reported that platelets migrate at sites of infection in vitro and in vivo. Importantly, platelets use their ability to migrate to collect and bundle fibrin (ogen)-bound bacteria accomplishing efficient intravascular bacterial trapping. Here, we describe a method that allows analyzing platelet migration in vitro, focusing on their ability to collect bacteria and trap bacteria under flow. [摘要]  血小板对于止血和血栓形成至关重要,但在免疫反应中也起着不同的作用。 我们最近报道了血小板在体外体外和体内感染部位迁移。 重要的是,血小板利用它们迁移的能力来收集和捆绑纤维蛋白(ogen)结合的细菌,从而实现有效的血管内细菌捕获。 在这里,我们描述了一种方法,允许分析血小板在体外的迁移,重点是它们收集细菌和捕获流动细菌的能力。

【背景】血小板是从巨核细胞释放的小的无核细胞片段,其存在于哺乳动物生物的骨髓内(Machlus和Italiano,2013)。大约7500亿血小板在人体血液中循环,不断扫描脉管系统以破坏内皮表面。在遇到内皮损伤时,血小板立即被招募在充分表征的事件级联中,包括初始血小板束缚和滚动,然后是血小板活化,粘附和扩散,最终导致纤维蛋白(ogen)依赖性聚集和随后的血栓收缩(Jackson, 2007)。血小板栓塞形成是生理性止血的主要步骤,但也是动脉粥样硬化斑块破裂后的病理性血栓形成,触发心肌梗塞或中风(Jackson,2011)。

除了在止血和血栓形成中的公认作用外,血小板还发展出多种免疫功能(Semple et al。,2011)。作为第一批招募炎症和感染部位的细胞,血小板在启动血管内免疫反应中起着重要作用(Wong et ...

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