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Thermo-FlaskTM Benchtop Liquid Nitrogen Containers

Company: Thermo Fisher Scientific
Catalog#: 2122
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Endpoint or Kinetic Measurement of Hydrogen Sulfide Production Capacity in Tissue Extracts
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2017-07-05
[Abstract]  Hydrogen sulfide (H2S) gas is produced in cells and tissues via various enzymatic processes. H2S is an important signaling molecule in numerous biological processes, and deficiencies in endogenous H2S production are linked to cardiovascular and other health complications. Quantitation of steady-state H2S levels is challenging due to volatility of the gas and the need for specialized equipment. However, the capacity of an organ or tissue extract to produce H2S under optimized reaction conditions can be measured by a number of current assays that vary in sensitivity, specificity and throughput capacity. We developed a rapid, inexpensive, specific and relatively high-throughput method for quantitative detection of H2S ... [摘要]  通过各种酶法在细胞和组织中产生硫化氢(H 2 S)。 H 2 S是许多生物过程中重要的信号分子,内源性H 2 S生产的缺陷与心血管和其他健康并发症有关。稳态H 2 S水平的定量是由于气体的挥发性和专门设备的需要而具有挑战性的。然而,器官或组织提取物在优化的反应条件下产生H 2 S的能力可以通过许多灵敏度,特异性和通过能力变化的现有测定来测量。我们开发了用于从生物组织定量检测H 2 S生产能力的快速,廉价,特异性和相对高通量的方法。释放到生物样品上方的头部空间中的H 2 S 2与乙酸铅反应形成硫化铅,其使用平板阅读器或作为终点测定法连续测量。
【背景】通过哺乳动物(CGL,CBS,3-MST)中的至少三种不同的酶以一定范围的组织和细胞类型分布内源性地产生硫化氢(H 2 S)。 H 2 S作为与代谢相关的广泛生物学功能的气体发射器和效应分子(Wang,2012)起作用(Módiset al。,2013),应力抵抗(Hine等人,2015)和氧化还原生物学(Dickhout et al。,2012)。减少的H 2 S与心血管问题有关,包括啮齿动物中的高血压(Yang等人,2008)和人心脏肥大(Polhemus等人, ,2014)。增加的H 2 S也可引起病理学,例如啮齿动物胰腺炎(Bhatia et al。,2005)。因此,从生物来源准确和定量地检测H 2 ...

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