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    • 10. 发明授权
    • Diagnostisches Testverfahren zum Nachweis von oralen pathogenen Bakteriengemischen
    • 用于检测口腔致病菌细菌混合物的诊断测定方法
    • EP0165905B1
    • 1989-03-08
    • EP85810281.7
    • 1985-06-18
    • THE BOARD OF REGENTS OF THE UNIVERSITY OF MICHIGAN
    • Lang, Niklaus P., Dr. med. dent. c/o Zahnmed.Gusberti, Francesco A., Dr. med. dent. c/o Zahn-Syed, Salam A. c/o Zahnmed. Kliniken derLoesche Walter J
    • C12Q1/04C12Q1/36
    • C12Q1/37C12Q1/04C12Q2337/30
    • 1. Diagnostic procedure for detecting a mixture of pathogenic oral plaque bacteria associated with gingivitis and parodontitis, characterized in that an oral plaque specimen is collected in a sterile, small glass bottle containing 0.5 - 1 ml of HEPES buffer or reduced transport liquid and from 5 - 10 cleaned, sterile glass beads having a diameter of from 2 - 3 mm, and that the small bottle is thoroughly shaken for about 10 sec., the contents are divided up into from 4 - 8 parts of 100 mu l each, and each part is tested for enzymatic activity by mixing each part specimen with a chromogenic substrate and incubating it, the substrates being chosen from the group of the following substrates : N-alpha-benzoyl-D,L-arginine-beta-naphthylamide.HCl ; L-valine-beta-naphthylamide ; L-leucine-beta-naphthylamide.HCl ; L-pyrrolidonyl-beta-naphthylamide ; L-serine-beta-naphthylamide ; L-arginine-beta-naphthylamide ; L-alamine-beta-naphthylamide ; L-phenylalanine-beta-naphthylamide ; L-hydroxy-proline-beta-naphthylamide and glycylglycyl-beta-naphthylamide, which are substrates of enzymes that are released by pathogenic bacteria contained in the mixture to be detected, the positive enzymatic reaction being detected by means of attacked substrates which, through the addition of chromogenic reagents, have modified light-absorption values, and the substantially positive enzymatic reaction indicates the presence of a pathogenic bacterial mixture.
    • 1.用于检测与牙龈炎和牙菌斑相关的病原性口腔斑块细菌的混合物的诊断程序,其特征在于将口腔斑块样品收集在含有0.5-1ml HEPES缓冲液或还原的运输液体的无菌小玻璃瓶中,并从5 - 10个直径为2-3mm的清洁无菌玻璃珠,并将小瓶充分摇动约10秒,将内容物分成4至8份,每份100μl,每份 通过将各部分样品与显色底物混合并将其孵育来测试部分酶活性,底物选自下列底物:N-α-苯甲酰-D,L-精氨酸-β-萘酰胺。 L-缬氨酸-β-萘酰胺; L-亮氨酸-β-萘酰胺。 L-吡咯烷酮基-β-萘酰胺; L-丝氨酸-β-萘酰胺; L-精氨酸-β-萘酰胺; L-阿拉伯-β-萘酰胺; L-苯丙氨酸-β-萘酰胺; L-羟基 - 脯氨酸-β-萘基酰胺和甘氨酰甘氨酰基-β-萘基酰胺,它们是待检测的混合物中包含的病原体释放的酶的底物,通过侵袭的底物检测到阳性酶反应, 显色剂的添加具有改变的光吸收值,并且基本上正的酶反应表明存在病原菌混合物。