Analytical methods utilizing reducible components
    5.
    发明授权
    Analytical methods utilizing reducible components 失效
    利用可还原成分的分析方法

    公开(公告)号:US5045477A

    公开(公告)日:1991-09-03

    申请号:US344870

    申请日:1989-04-28

    摘要: Certain reducible compounds are useful in analytical compositions, elements and methods, e.g. for assays of bacterial cells. These compounds comprise a moiety which provides a detectable species (e.g. a dye) when released from the compound in an environment of pH 9 or less (i.e. physiological pH). Structurally, the reducible compounds are aromatic derivatives or quinones having suitable substituents which promote varying amounts of moiety release at physiological pH. When reduced at about pH 7, the preferred compounds release at least 50% of the available detectable species within 30 minutes.

    摘要翻译: 某些可还原的化合物可用于分析组合物,元素和方法,例如, 用于细菌细胞的测定。 这些化合物包括当在pH 9或更低(即生理pH)的环境中从化合物中释放时提供可检测物质(例如染料)的部分。 在结构上,可还原的化合物是具有合适取代基的芳香族衍生物或醌,其在生理pH下促进不同量的部分释放。 当在约pH7下降低时,优选的化合物在30分钟内释放至少50%的可检测物质。

    Method for minimizing interference by reductants when detecting cells in
biological fluids
    8.
    发明授权
    Method for minimizing interference by reductants when detecting cells in biological fluids 失效
    当检测生物流体中的细胞时,减少还原剂的干扰的方法

    公开(公告)号:US4912035A

    公开(公告)日:1990-03-27

    申请号:US060559

    申请日:1987-06-11

    IPC分类号: C12Q1/04

    CPC分类号: C12Q1/04

    摘要: A method for the determination of cells in a sample is disclosed. The sample is typically urine and the method is useful in removing interfering reductants from the sample. The method comprises the steps of:(1) separating the cells from the sample,(2) washing the separated cells with:(a) an iron(III) chelate solution and(b) a non-ionic surfactant solution and(3) contacting the washed cells with a redox reagent so as to produce a detectable change due to the presence of the cells.

    摘要翻译: 公开了一种测定样品中细胞的方法。 样品通常是尿液,该方法可用于从样品中除去干扰还原剂。 该方法包括以下步骤:(1)从样品中分离细胞,(2)用(a)铁(III)螯合溶液和(b)非离子表面活性剂溶液洗涤分离的细胞;(3) 使洗涤的细胞与氧化还原剂接触,以便由于细胞的存在而产生可检测的变化。

    Rapid and efficient capture of DNA from sample without using cell lysing reagent
    9.
    发明授权
    Rapid and efficient capture of DNA from sample without using cell lysing reagent 有权
    从样品中快速高效地捕获DNA,无需使用细胞裂解试剂

    公开(公告)号:US07615346B2

    公开(公告)日:2009-11-10

    申请号:US11613475

    申请日:2006-12-20

    IPC分类号: C12Q1/68 C12P19/34

    摘要: Nucleic acids can be made available for amplification or other treatment after admixture of a sample with specific weakly basic polymers to form a precipitate with the nucleic acids at acidic pH. After removing non-precipitated materials, the pH is then made basic, thereby releasing the nucleic acids from the polymer. This method for preparing specimen samples is simple and quite rapid, and the released nucleic acids can be further treated in hybridization assays or amplification procedures. No surfactant or other cell lysing reagents are employed. The weakly basic polymers are water-soluble and cationic at acidic pH, but neutral in charge at basic pH.

    摘要翻译: 在将样品与特定弱碱性聚合物混合后,核酸可以用于扩增或其它处理,以在酸性pH下与核酸形成沉淀。 除去非沉淀物后,将pH调至碱性,从而将聚合物中的核酸释放出来。 制备标本样品的这种方法是简单且相当快速的,并且释放的核酸可以在杂交测定或扩增程序中进一步处理。 不使用表面活性剂或其它细胞裂解试剂。 弱碱性聚合物在酸性pH下为水溶性和阳离子型,而在碱性pH下为负电荷。

    Methods for extracting nucleic acids from tissue samples and paraffin-embedded tissues
    10.
    发明授权
    Methods for extracting nucleic acids from tissue samples and paraffin-embedded tissues 有权
    从组织样品和石蜡包埋组织中提取核酸的方法

    公开(公告)号:US06469159B1

    公开(公告)日:2002-10-22

    申请号:US09301374

    申请日:1999-04-26

    IPC分类号: C07H2100

    CPC分类号: C12N15/1003 Y10S435/81

    摘要: The present invention provides rapid and highly effective methods for extracting nucleic acids suitable for PCR amplification from tissue samples and paraffin-embedded tissue samples. Extraction is accomplished within a few minutes using a composition comprising a buffer, at least one nonionic surfactant, and a protease enzyme. The sample is then heated at alkaline pH and after a centrifugation step, the DNA is the supernatant can be used directly in known amplification methods, such as PCR.

    摘要翻译: 本发明提供从组织样品和石蜡包埋的组织样品中提取适合于PCR扩增的核酸的快速和高效的方法。 使用包含缓冲液,至少一种非离子表面活性剂和蛋白酶的组合物在几分钟内完成提取。 然后将样品在碱性pH下加热,并且在离心步骤之后,DNA是上清液可以直接用于已知的扩增方法,例如PCR。