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MgCl2

氯化镁六水合物

公司名称: Carl Roth
产品编号: 2189.1
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Characterization of Hippocampal Adult-borne Granule Cells in a Transient Cerebral Ischemia Model
Author:
Date:
2021-01-20
[Abstract]  

Long-term consequences of stroke significantly impair the quality of life in a growing population of stroke survivors. Hippocampal adult neurogenesis has been hypothesized to play a role in the pathophysiology of cognitive and neuropsychiatric long-term sequelae of stroke. Reliable animal models of stroke are paramount to understanding their biomechanisms and to advancing therapeutic strategies. We present a detailed protocol of a transient cerebral ischemia model which does not cause direct ischemic damage in the hippocampus, allowing investigations into the pathophysiology of long-term

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[摘要]  [摘要]中风的长期后果严重损害了越来越多的中风幸存者的生活质量。假定海马成年神经发生在中风的认知和神经精神病学长期后遗症的病理生理学中起作用。可靠的中风动物模型对于理解其生物机制和推进治疗策略至关重要。我们提出 暂时性脑缺血模型的详细协议,该模型不会在海马体中引起直接缺血损伤,从而可以研究中风的长期神经认知缺陷的病理生理学。此外,我们描述了一种用于获取成人海马颗粒细胞的电生理学和形态学特征的急性海马切片的协议。还讨论了与从小细胞(例如未成熟的成年颗粒细胞)进行电生理记录有关的特殊性。本协议可以通过多模式研究(行为,形态结构,生化)加以补充,以期有希望促进研究和中风的长期后遗症的发展以及发现新的治疗机会。

[背景]中风是在发达国家发病率和死亡率的重要原因引起急性和延迟赤字。虽然针对缺血性中风恢复血流的干预策略在降低急性发病率和死亡率方面已经变得更加有效,但中风的长期后果(如中风后抑郁和中风后认知功能障碍和痴呆症)目前正在逃避临床治疗(Wang等。,2010; Loubinoux等人,2012; Mijajlovic ...

Assessment of Diadenylate Cyclase and c-di-AMP-phosphodiesterase Activities Using Thin-layer and Ion Exchange Chromatography
Author:
Date:
2021-01-05
[Abstract]  

All living cells use cyclic nucleotides as second messengers for signal sensing and transduction. Cyclic di-3′,5′-adenosine monophosphate (c-di-AMP) is primarily involved in the control of bacterial and euryarcheal osmoadaptation and is produced by diadenylate cyclases from two molecules of ATP. Specific phosphodiesterases hydrolyze c-di-AMP to the linear phosphoadenylate adenosine 5′-pApA or to AMP. Different methods including high-performance liquid chromatography (HPLC), thin-layer chromatography (TLC) and ion exchange chromatography (IEX) can be used to determine

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[摘要]  [摘要]所有活细胞均使用环状核苷酸作为第二信使,以进行信号传感和转导。环状二-3 ' ,5 ' -腺苷一磷酸(C-二-AMP)主要涉及细菌和控制euryarcheal osmoadaptation并且由产生diadenylate环化酶从ATP的两个分子。特定的磷酸二酯酶将c-di-AMP水解为线性磷酸腺苷腺苷5'-pApA或AMP。可以使用包括高效液相色谱(HPLC),薄层色谱(TLC)和离子交换色谱(IEX)在内的各种方法来确定c-di-AMP合成和降解酶的活性。在这里,我们详细描述了TLC和IEX方法适合于表征diadenylate环化酶DISA和磷酸二酯酶ATAC从链霉菌venezuelae 。TLC可以快速,轻松地分离放射性标记的底物和产品,而IEX避免了潜在危险的放射性底物的利用,如果没有HPLC系统,则可以用作良好的替代品。与TLC分析不同,无法使用IEX分析并行分析样品,因此更加耗时。


[背景]环核苷酸第二信使是原核和真核信号通路中的关键分子。环状二-3 ' ,5 ' -腺苷一磷酸(三二- AMP)是一种细菌第二信使与许多重要的功能,如渗压剂动态平衡调节,细胞壁代谢,生物膜的形成,DNA完整,孢子形成,毒力和生长(Fahmi et ...

Live-cell Imaging and Quantitative Analysis of Meiotic Divisions in Caenorhabditis elegans Males
Author:
Date:
2020-10-20
[Abstract]  Live-imaging of meiotic cell division has been performed in extracted spermatocytes of a number of species using phase-contrast microscopy. For the nematode Caenorhabditis elegans, removal of spermatocytes from gonads has damaging effects, as most of the extracted spermatocytes show a high variability in the timing of meiotic divisions or simply arrest during the experiment. Therefore, we developed a live-cell imaging approach for in situ filming of spermatocyte meiosis in whole immobilized C. elegans males, thus allowing an observation of male germ cells within an ... [摘要]  [摘要] 用相差显微镜对一些物种的精母细胞进行了减数分裂的实时成像。对于秀丽隐杆线虫来说,去除生殖腺中的精母细胞具有破坏性作用,因为大多数精母细胞在减数分裂的时间上表现出高度的变异性,或者只是在实验中停止。因此,我们开发了一种活体细胞成像方法,用于原位拍摄固定化线虫雄性精母细胞减数分裂过程,从而可以在不受干扰的环境中观察雄性生殖细胞。为此,我们利用带有荧光标记染色体和中心体的菌株。在这里我们描述如何固定男性蠕虫进行实时成像。此外,我们描述了获取和处理数据的工作流程,以获得有关精母细胞减数分裂I和II中染色体分离动态的定量信息。此外,我们最新开发的方法允许我们在电子显微镜中重新定位胶片上的主轴,而不管蜗杆的初始3D方位如何,并以统计稳健的方式分析活蠕虫的纺锤动力学。我们的实时成像方法也适用于秀丽隐杆线虫雌雄同体,并且可以扩展到其他荧光标记的线虫或其他完全透明的小型模型生物。

[背景] ...

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