A method and kit for the measurement of the activation of...

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G01N 33/569 (2006.01)

Patent

CA 2460629

A method for the measurement of the activation of the basophils following stimulation with an allergen to determine hypersensitivity to some substances, in which a blood sample with an addition of interleukin-3 in a quantity of 0.05 to 50 ng/ml, based on the volume of the sample, and of appropriately diluted allergen in a quantity of 0.5 to 100 units/ml is incubated at the temperature corresponding to the physiological environment for 15 to 45 minutes, whereafter a staining with anti-CD63 antibody in an amount of 3 to 30 ~l/1OO ~l of blood and with the antibody against a surface receptor of the basophil in an amount of 3 to 30 ~l/1OO ~l of blood are added at a temperature of 0 to +10 ~C and the sample, after vortexing, is then incubated in an ice bath for 15 to 30 minutes, and then is lysed and subjected to flow cytometry.

Procédé de mesure de l'activation des basophiles consécutive à une stimulation par un allergène en vue de déterminer une hypersensibilité à certaines substances. Le procédé comporte les étapes consistant à : incuber un échantillon de sang auquel a été ajouté de l'interleukine-3 à raison de 0,05 à 50 ng/ml sur la base du volume de l'échantillon, et un allergène dilué de façon appropriée à raison de 0,5 à 100 unités/ml, à une température correspondant au milieu physiologique, pendant 15 à 45 minutes ; ajouter ensuite aux basophiles un anticorps anti-CD63 de coloration, à raison de 3 à 30 µl/100 µl de sang, et un anticorps dirigé contre un récepteur de surface des basophiles à raison de 3 à 30 µl/100 µl de sang, à une température comprise entre 0 et +10 ·C ; incuber l'échantillon dans un bain de glace pendant 15 à 30 minutes après l'avoir soumis à un écoulement tourbillonnaire ; lyser ensuite l'échantillon et le soumettre à une cytométrie de flux.

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