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35 mm x 10 mm Easy Grip Petri Dish

Company: BD
Catalog#: 351008
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In vivo and in vitro 31P-NMR Study of the Phosphate Transport and Polyphosphate Metabolism in Hebeloma cylindrosporum in Response to Plant Roots Signals
Author:
Date:
2018-08-20
[Abstract]  We used in vivo and in vitro phosphorus-31 nuclear magnetic resonance (31P-NMR) spectroscopy to follow the change in transport, compartmentation and metabolism of phosphate in the ectomycorrhizal fungus Hebeloma cylindrosporum in response to root signals originating from host (Pinus pinaster) or non-host (Zea mays) plants. A device was developed for the in vivo studies allowing the circulation of a continuously oxygenated mineral solution in an NMR tube containing the mycelia. The in vitro studies were performed on fungal material after several consecutive treatment steps (freezing in liquid nitrogen; crushing with perchloric acid; elimination of perchloric acid; freeze-drying; dissolution in an appropriate liquid ... [摘要]  我们使用体内和体外磷-31核磁共振( 31 P-NMR)光谱来跟踪运输,分区和 外生菌根真菌 Hebeloma cylindrosporum 中的磷酸盐代谢响应来自宿主( Pinus pinaster )或非宿主( Zea mays )的根信号植物。 开发了一种用于体内研究的装置,其允许连续氧化的矿物质溶液在含有菌丝体的NMR管中循环。 在几个连续的处理步骤(在液氮中冷冻;用高氯酸压碎;消除高氯酸;冷冻干燥;在适当的液体培养基中溶解)后,对真菌材料进行体外研究。

【背景】 菌根真菌和植物之间的关联改善了宿主植物的P营养(Smith和Read,2008; Plassard和Dell,2010; Cairney,2011; Smith 等人,,2015)。这种积极效应主要归因于真菌菌丝对磷酸盐(Pi)的吸收,探测了在活跃吸收根周围的耗竭区以外的大量土壤(Smith和Read,2008; Cairney,2011; Smith et al。< em="">,2015)和真菌细胞分泌细胞外磷酸酶(Quiquampoix和Mousain,2005)。吸收的Pi部分地掺入磷酸化的代谢物,磷脂和核酸中,并且部分地浓缩成多磷酸盐(PolyP),其中它们构成液泡中的储存池(Ashford 等人,,1994)。该协议详述了一种装置,该装置允许通过 31 ...

Medaka-microinjection with an Upright Microscope
Author:
Date:
2018-02-05
[Abstract]  We described a simple method for microinjecting DNA/RNA/Protein solutions into medaka eggs under an upright microscope. Medaka is an excellent vertebrate model for reverse genetics, because of its daily spawning, short generation time, and egg transparency. These features enable us to efficiently perform functional genomic analyses of transgenic or genome edited fish. This protocol contains the initial steps necessary to create various types of genetically modified fish. [摘要]  我们已经描述了在直立显微镜下将DNA / RNA /蛋白质溶液显微注射到青eggs蛋中的简单方法。 青aka是一种优秀的反向遗传学脊椎动物模型,因为其每日产卵,短代时间和卵子透明度。 这些特征使我们能够有效地进行转基因或基因组编辑的鱼的功能基因组分析。 该协议包含了创建各种转基因鱼所需的初始步骤。

【背景】青aka是一种小型的淡水硬骨鱼物种,具有脊椎动物模型的特征,包括每日产卵,完整的基因组序列和一些有用菌株的可用性。此外,其蛋的透明度是通过显微注射将DNA / RNA /蛋白质溶液精确地引入蛋的细胞质中。显微注射对于功能基因组分析是重要的;例如,DNA显微注射是产生转基因鱼的不可缺少的技术,并且有助于理解体内基因的功能(Ozato等人,1986)。此外,CRISPR / Cas系统的显微注射能够实现靶向基因组编辑,如敲除和敲入方法(Ansai和Kinoshita,2014,Murakami等人,2017a)。

立体显微镜和直立显微镜均可用于鱼胚胎显微注射。虽然直立显微镜的显微注射正处于不稳定的状态。在本文中,我们描述了一个直立显微镜显微注射法的轮廓。该方法可以与其他方案一起使用,例如用于产生基因敲除或基因敲入系的方案(Ansai和Kinoshita,2014,Murakami等人,2017b)。

Transplantation of Fecal Microbiota Shaped by Diet
Author:
Date:
2018-01-05
[Abstract]  Alterations in diet and gut microbial ecology underlie the pathogenesis of type 1 diabetes (T1D). In the non-obese diabetic (NOD) mouse, we found high concentrations of bacterial metabolites acetate and butyrate in blood and faeces correlated with protection from disease. We reconstituted germ free (GF) NOD mice with fecal bacteria from protected NOD mice fed with high acetate- and butyrate-yielding diets, to test whether the transferred gut microbiota protect against the development of T1D. GF NOD mice that received a microbiota shaped by high acetate- but not butyrate-yielding diet showed a marked protection against diabetes. This fecal transplantation assay demonstrated the potential for a dietary technology to reshape the gut microbiota that enables specific bacteria to transfer ... [摘要]  饮食和肠道微生物生态学的改变是1型糖尿病(T1D)发病的基础。 在非肥胖糖尿病(NOD)小鼠中,我们发现血液和粪便中高浓度的乙酸和丁酸的细菌代谢物与防止疾病相关。 我们使用来自受保护的NOD小鼠的粪便细菌重建无菌(GF)NOD小鼠,饲喂高乙酸盐和丁酸盐产生的饮食,以测试转移的肠道微生物群是否防止T1D的发展。 GF NOD小鼠接受由高乙酸盐但不是丁酸盐产生饮食形成的微生物群显示出对糖尿病的显着保护。 这种粪便移植试验表明,饮食技术可以重塑肠道微生物群,使特定的细菌能够转移对T1D的保护。


【背景】已经在各种各样的疾病和病况中观察到肠道微生物群的变化。由于共生菌和致病菌之间的比例变化,肠道益生菌微生物群体失去了体内平衡。当微生物的组成变化很大时,可以观察到生物异常,某些种类的数量增加或减少(Clemente等,2012; Rajilic-Stojanovic,2013)。此外,肠道微生物群组成(其可能影响代谢物如SCFAs)的变化与许多炎性疾病有关(Clemente等人,2012),包括T1D(de Goffau等人 >,2013; Endesfelder ...

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