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    • 2. 发明申请
    • ASSAY FOR NON-FAMILIAL ALZHEIMER'S DISEASE
    • 测定非特异性阿尔茨海默病
    • WO1994001579A1
    • 1994-01-20
    • PCT/US1993005881
    • 1993-06-18
    • BOSTON UNIVERSITY
    • BOSTON UNIVERSITYSIMONS, Elizabeth, R.DAVIES, Theresa, A.
    • C12Q01/44
    • G01N33/6896G01N33/5091G01N2800/2821
    • A method of assaying for non-familial Alzheimer's disease in a live patient, by preparing washed platelets from the blood of the patient; inserting a pH probe in the platelets in the form of a fluorescent dye such as 2',7'-bis (carboxyethyl)- 5(6)-carboxyfluorescein; inhibiting alkalinization of platelet response by blocking Na+/H+ transfer across the platelet membranes with dimethyl amiloride; stimulating the platelets with (alpha)-thrombin so that the cytoplasm of the stimulated platelets shows a characteristic acidification response or change in cytoplasmic pH; measuring the cytoplasmic pH of the platelets following stimulation; and comparing the measured pH with the corresponding stimulated cytoplasmic pH in platelets from normal individuals.
    • 一种在活体患者中测定非家族性阿尔茨海默氏病的方法,通过从患者的血液中制备洗涤的血小板; 以2',7'-双(羧乙基)-5(6) - 羧基荧光素等荧光染料的形式将pH探针插入血小板; 通过用二甲基阿米洛利阻断Na + / H +转移穿过血小板膜来抑制血小板反应的碱化; 用(α)凝血酶刺激血小板,使得受激血小板的细胞质显示出特征酸化反应或细胞质pH的变化; 测量刺激后血小板的细胞质pH值; 并将测量的pH与来自正常个体的血小板中相应的刺激的细胞质pH进行比较。
    • 5. 发明申请
    • PROTEASES CAUSING ABNORMAL DEGRADATION OF AMYLOID 'beta'-PROTEIN PRECURSOR
    • 蛋白质引起异丙肾上腺素β-丙氨酸前体的异常降解
    • WO1992003542A1
    • 1992-03-05
    • PCT/US1991005932
    • 1991-08-19
    • BOSTON UNIVERSITY
    • BOSTON UNIVERSITYABRAHAM, Carmela, R.
    • C12N09/50
    • C12N9/6472A61K38/55C07K14/4711
    • A proteolytic factor is capable of cleaving beta -protein precursor at a site near the beta -protein N-terminus. Also, a method for treating Alzheimer's disease in a patient includes steps of reducing DOLLAR (b)-protein precursor proteolysis outside the beta -protein domain at a site near the beta -protein N-terminus. Also, a method for purifying en enzyme from a sample includes steps of incubating the sample with a labelled substrate of the enzyme or with a labelled fragment of a substrate to which the enzyme binds, treating the sample with a crosslinking agent to crosslink any enzyme-substrate complexes in the sample, and recovering labelled complexes. Also, a method for diagnosis in a subject of a disease characterized by accumulation of amyloid includes determining the level, in a sample of tissue or body fluid from the subject, of an AD proteolytic factor. Also, a method for screening for an agent useful in treatment of a disease characterized by accumulation of amyloid includes steps of incubating an AD protease with a peptide having an amino acid sequence corresponding to the sequence spanning the beta -protein N-terminus in the presence of a candidate agent, and determining the degradation of the peptide.
    • 蛋白水解因子能够在β-蛋白N末端附近的位点切割β-蛋白前体。 此外,在患者中治疗阿尔茨海默氏病的方法包括在β-蛋白N-末端附近的位点处,在β-蛋白质结构域外部减少DOLLAR(b) - 蛋白前体蛋白水解的步骤。 此外,从样品中纯化en酶的方法包括将样品与酶的标记底物或酶结合的底物的标记片段一起孵育的步骤,用交联剂处理样品以交联任何酶 - 底物复合物,并回收标记的复合物。 另外,以淀粉样蛋白积累为特征的疾病的受试者的诊断方法包括确定AD蛋白水解因子在受试者的组织或体液样品中的水平。 此外,用于筛选可用于治疗以淀粉样蛋白积累为特征的疾病的药剂的方法包括以下步骤:在存在的情况下将AD蛋白酶与具有对应于跨越β-蛋白N-末端的序列的氨基酸序列的肽一起孵育 的候选试剂,并确定肽的降解。