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Sodium Citrate

Company: SAFC Global
Catalog#: W302600
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Immunohistochemistry of Kidney a-SMA, Collagen 1, and Collagen 3, in A Novel Mouse Model of Reno-cardiac Syndrome
Author:
Date:
2020-09-20
[Abstract]  Cardiorenal syndrome defines a synergistic pathology of the heart and kidneys where failure of one organ causes failure in the other. The incidence of cardiovascular mortality caused by this syndrome, is 20 fold higher in the end stage renal disease (ESRD) population compared to the population as a whole thus necessitating the need for improved therapeutic strategies to combat reno-cardiac pathologies.

Murine in vivo models play a major role in such research permitting precise genetic modification thus reducing miscellany, however presently there is no steadfast model of reno-cardiac syndrome in the most common genetically modified mouse strain, the C57BL/6 mouse. In this study we have modified an established model of chronic renal disease using adenine diet and ...
[摘要]  [摘要 ] 心肾综合征定义了心脏和肾脏的协同病理,其中一个器官的衰竭导致另一个器官的衰竭。与整个人群相比,该综合征导致的心血管疾病死亡率在终末期肾脏病(ESRD)人群中要高出20倍,因此有必要改善治疗策略以应对肾病。

小鼠体内模型在允许精确基因修饰从而减少杂项的研究中起主要作用,但是目前在最常见的基因修饰小鼠品系C57BL / 6小鼠中还没有稳定的雷诺-心脏综合征模型。在这项研究中,我们使用腺嘌呤饮食修改了已建立的慢性肾脏疾病模型,并扩展了在C57BL / 6小鼠中实现慢性肾功能衰竭和随之而来的肾心脏综合征的相关病理。

使八周大的雄性C57BL / 6小鼠适应7天,然后给予0.15%腺嘌呤饮食或对照饮食20周,此后终止实验,收集血液,尿液和器官并进行生化和免疫组织化学分析。

施用0.15%的腺嘌呤饮食会导致进行性肾功能衰竭,从而导致肾性心脏病综合征,这可通过心体重比显着增加来证实(P <0.0001)。血液生化表明,用腺嘌呤喂养的小鼠血清肌酐,尿素含量显着增加(P <0.0001),肾小球滤过率显着降低(P <0.05),而肾脏的α-SMA,胶原蛋白1和胶原蛋白3免疫组化显示严重的纤维化。

我们提出了一种新型的腺嘌呤饮食方案,该方案在C57BL / ...

Isolating Multiple Extracellular Vesicles Subsets, Including Exosomes and Membrane Vesicles, from Bovine Milk Using Sodium Citrate and Differential Ultracentrifugation
Author:
Date:
2020-06-05
[Abstract]  Milk is a complex fluid that contains various types of proteins and extracellular vesicles (EVs). Some proteins can mingle with EVs, and interfere with their isolation. Among these proteins, caseins form micelles of a size comparable to milk EVs, and can thus be co-isolated with EVs. Preliminary steps that affect milk are crucial for EV isolation and impact the purity and abundance of isolated EVs. In the course of our previous works on cow’s milk EVs, we found that sodium citrate (1% final), which is a biocompatible reagent capable of breaking down casein micelles into 40-nm monomers, allowed the isolation of high quantities of EVs with low coprecipitation of caseins or other contaminating proteins. Using this protocol, we successfully separated different EV subsets, characterized in ... [摘要]  [摘要 ] 牛奶是一种复杂的流体,其中包含各种类型的蛋白质和细胞外囊泡(EVs),有些蛋白质会与EV混合在一起,并干扰其分离,在这些蛋白质中,酪蛋白形成的胶束大小与牛奶EV相当因此,可以将其与电动汽车共隔离。影响牛奶的初步步骤对于电动汽车的隔离,影响分离电动汽车的纯度和丰度至关重要。在我们以前对牛奶电动汽车的研究过程中,我们发现柠檬酸钠(最终含量为1% )是一种生物相容性试剂,能够将酪蛋白胶束分解为40 nm单体,可分离出大量的EV,而酪蛋白或其他污染蛋白的沉淀率却很低。 EV子集,深入表征其形态,蛋白质含量和小分子RNA富集模式。我们还能够描述其在小鼠肠道炎症模型中的生物学功能。具体来说,是从同一样品中分离出不同乳EV子集的培养基。更具体地说,我们着重介绍了使用柠檬酸钠作为标准化方法来分离和研究乳EV的方法及其在差分超速离心之外的分离技术的潜力。

[背景 ] 在我们以前的出版物(本穆萨等人。,2016 ,2017,2019b和2019c;本穆萨和普罗沃斯特,2019) ,我们强调,牛乳是包含细胞外无数的复杂流体囊泡。(EV)用的子集在这些之中,外泌体是多囊体(MVB)与细胞膜融合时释放的约100 nm囊泡,进行超速离心时,这些沉淀物的离心速度等于或高于100,000 xg (P100K,其中P代表沉淀)(Pieters 等。,2015) ...

Immunolabeling of Maize Meiocytes
Author:
Date:
2020-04-05
[Abstract]  This protocol describes a quick method for immunolocalization of meiotic proteins in maize. It includes a fixation step that allows for long-term storage of material and provides good preservation of chromatin structure. [摘要]  [摘要] 该协议描述了一种在玉米中进行减数分裂蛋白免疫定位的快速方法。它包括一个固定步骤,可以长期保存材料并提供良好的染色质结构保存。

[背景] 卵母细胞是生殖细胞,在其中发生同源染色体配对,突触和重组的专门过程,然后染色体分离以产生单倍体核。阐明减数分裂蛋白的定位对于理解这些过程至关重要。尽管此协议可能有多种变体,但我们发现微波加热步骤对于使其可靠地工作于玉米中的免疫定位至关重要。

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