{{'Search' | translate}}
 

Phenazine ethosulfate

吩嗪硫酸乙酯

Company: Sigma-Aldrich
Catalog#: P4544
Bio-protocol()
Company-protocol()
Other protocol()

Multiplication and Growth Inhibition Activity Assays for the Zoonotic Malaria Parasite, Plasmodium knowlesi
Author:
Date:
2020-09-05
[Abstract]  Malaria remains a major cause of morbidity and mortality globally. Clinical symptoms of the disease arise from the growth and multiplication of Plasmodium parasites within the blood of the host. Thus in vitro assays to determine how drug, antibody and genetic perturbations affect the growth rate of Plasmodium parasites are essential for the development of new therapeutics and improving our understanding of parasite biology. As both P. falciparum and P. knowlesi can be maintained in culture with human red blood cells, the effect of antimalarial drugs and inhibitory antibodies that target the invasion or growth capacity of Plasmodium parasites are routinely investigated by using multiplication assays or growth inhibition activity (GIA) ... [摘要]  [摘要] 疟疾仍然是全球发病率和死亡率的主要原因。该疾病的临床症状源于宿主血液中疟原虫的生长和繁殖。因此,体外测定以确定药物,抗体和遗传扰动如何影响疟原虫寄生虫的生长速率对于开发新疗法和增进我们对寄生虫生物学的理解至关重要。由于两个恶性疟原虫和P. knowlesi 可以在培养物中维持与人体红细胞,抗疟疾药物和抑制性抗体靶向的侵袭能力的影响疟原虫寄生虫 是通过使用针对这两个物种乘法测定或生长抑制测定法常规地研究。该协议给出了详细的一步一步的过程来进行基于所述寄生虫乳酸脱氢酶的活性为基础的流式细胞仪乘法测定和生长抑制活性测定法测试性中和抗体的疟原虫knowlesi 适于人类红血细胞培养物中。虽然类似测定法是用于很好地建立的恶性疟原虫,P. knowlesi 被更密切相关的所有其他人类感染性物种(帕切科等人。,2018),因此可以用作替代用于测试药物和疫苗用于其它疟疾种类,例如如间日疟原虫,它是非洲以外疟疾最广泛的病因,但尚未在实验室条件下进行培养。

[背景 ] ...

A Modified Chromogenic Assay for Determination of the Ratio of Free Intracellular NAD+/NADH in Streptococcus mutans
Author:
Date:
2016-08-20
[Abstract]  Nicotinamide adenine dinucleotide is a coenzyme present in all kingdoms of life and exists in two forms: oxidized (NAD+) and reduced (NADH). NAD(H) is involved in a multitude of essential metabolic redox reactions, providing oxidizing or reducing equivalents. The ratio of free intracellular NAD+/NADH is fundamentally important in the maintenance of cellular redox homeostasis (Ying, 2008). Various chromogenic cycling assays have been used to determine the ratio of NAD+/NADH in both bacterial and mammalian cells for more than forty years (Bernofsky and Swan, 1973; Nisselbaum and Green, 1969).

Here, we describe in detail an assay to determine the ratio of free intracellular NAD+ to NADH in Streptococcus mutans. This cycling ...
[摘要]  烟酰胺腺嘌呤二核苷酸是存在于生命的所有王国中的辅酶,并且以两种形式存在:氧化(NAD +)和还原(NADH)。 NAD(H)参与多种必需的代谢氧化还原反应,提供氧化或还原等价物。游离细胞内NAD + /NADH的比率在维持细胞氧化还原稳态中是根本重要的(Ying,2008)。已经使用各种显色循环测定来测定细菌和哺乳动物细胞中NAD +/NAD +/NADH的比率超过四十年(Bernofsky和Swan,1973; Nisselbaum和Green,1969)。 />  在这里,我们详细描述了测定变异链球菌中游离细胞内NAD + 与NADH的比率的测定法。该循环测定是Bernofsky和Swan(Bernofsky和Swan,1973)首先描述的方案的修改版本,使用Frezza等人描述的提取缓冲液。 (2011),随后是由Gibbon和Larher描述的减少的MTT降水(Gibon和Larher,1997)。如图1所示,使用乙醇脱氢酶来驱动一系列氧化还原反应,利用来自样品提取物的外源添加的乙醇和NAD +作为初始底物,吩嗪乙硫酸盐(PES)作为电子载体,以及噻唑基蓝色四唑溴化物(MTT)作为末端电子受体。使用6M ...

Comments