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VWR® 8-425 Screw-Thread Vials

VWR ® 8-425螺纹瓶

公司名称: VWR
产品编号: 66020-950
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Long-term in vitro Culture of Cryptosporidium parvum
Author:
Date:
2018-08-05
[Abstract]  Continuous in vitro growth of Cryptosporidium parvum has proved difficult and conventional in vitro culture techniques result in short-term (2-5 days) growth of the parasite resulting in thin-walled oocysts that fail to propagate using in vitro cultures, and do not produce an active infection using immunosuppressed or immunodeficient mouse models (Arrowood, 2002). Here we describe the use of hollow fiber bioreactors (HFB) that simulate in vivo conditions by providing oxygen and nutrients to host intestinal cells from the basal surface and permit ... [摘要]  Cryptosporidium parvum 的连续体外生长已证明是困难的,并且常规体外培养技术导致短期(2-5天)生长寄生虫导致薄壁卵囊不能使用体外培养物繁殖,并且不使用免疫抑制或免疫缺陷小鼠模型产生活跃感染(Arrowood,2002)。在这里,我们描述了中空纤维生物反应器(HFB)的使用,通过提供氧气和营养物质从基础表面宿主肠细胞模拟体内条件,并允许建立低氧化还原,高营养环境顶面。当接种10 5 C时。 parvum (爱荷华州分离物)卵囊生物反应器在14天后每ml产生10个 8 卵囊(20ml额外毛细血管体积),并保持2年以上。使用TCR-α免疫缺陷小鼠模型的体内感染性研究显示,在6,12和18个月时从生物反应器产生的卵囊与用于启动培养的亲本Iowa分离物无法区分。 HFB产生的卵囊具有与亲本爱荷华分离物类似的百分比分析。

【背景】 Cryptosporidium parvum 是人和其他哺乳动物肠道的细胞内专性寄生虫,导致急性腹泻。该疾病在免疫功能正常的个体中是自限性的,然而,在免疫功能低下的成人和幼儿中,该疾病可能危及生命(Kotloff,2017)。它是经济资源低的国家中三种被诊断出的儿童肠道疾病之一(Kotloff et al。,2013; Sow et ...

Aspergillus terreus Infection of Fruits and Terrein Quantification by HPLC Analysis
Author:
Date:
2016-06-20
[Abstract]  The opportunistic fungal human and plant pathogen Aspergillus terreus (A. terreus) can be isolated from sea water, soil or decaying organic matter such as rotting leaves and fruits. While growing on fruits A. terreus produces secondary metabolites such as terrein, which may ease its penetration into plant tissues. In addition, biological activities of terrein may support competition against other microorganisms. In summary, terrein is a small polyketide that reduces germination of seedlings, induces lesions on fruit surfaces but also shows moderate antifungal ... [摘要]  机体真菌人和植物病原菌土曲霉(A. terreus)可以从海水,土壤或腐烂的有机物质如腐烂的叶子和果实中分离出来。 当在水果上生长时,A. terreus产生次生代谢物如土曲杆菌,这可以缓解其渗透到植物组织中。 此外,土耳特蛋白的生物活性可能支持与其他微生物的竞争。 总而言之,土豆蛋白是一种减少幼苗发芽的小聚酮,诱发水果表面的病变,但也显示出中等的抗真菌活性。 使用这份手稿,我们提供了一种水果感染方案与土曲霉,随后使用基于HPLC的量化方法测定感染果实的土豆油生产率。

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