Method for the diagnosis of coeliac disease

G - Physics – 01 – N

Patent

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Details

G01N 33/564 (2006.01) G01N 33/50 (2006.01) G01N 33/554 (2006.01) G01N 33/68 (2006.01)

Patent

CA 2231528

A method for diagnosing coeliac disease and related conditions in a subject known or suspected of having such a condition comprises contacting a body fluid from the subject containing antibody particular to the condition with a suspension of cells from an immortal cell line having an epitopic site specific for the antibody and then determining the extent of binding of antibody to the cells. Human umbilical cells have been found to be particularly suitable for use in the method. The use of a cell line means that substantial amounts of material for the antibody estimation can be prepared by culturing the cells and storing them for future use at a very low cost.

La présente invention concerne un procédé de diagnostic d'affection coeliaque et d'états s'y rapportant chez un sujet pour lequel on connaît ou soupçonne l'existence d'un tel état. Le procédé consiste d'abord à mettre en contact un fluide physiologique, prélevé chez le sujet et contenant un anticorps spécifique de l'état considéré, avec une suspension de cellules d'une lignée cellulaire immortelle présentant un site épitopique spécifique de l'anticorps. Le procédé consiste ensuite à déterminer l'importance de la liaison de l'anticorps avec les cellules. Il est avéré que les cellules ombilicales humaines conviennent particulièrement pour ce procédé. L'utilisation d'une lignée cellulaire permet, par mise en culture de ces cellules, de préparer d'importantes quantités de matériau pour l'estimation d'anticorps et de les stocker pour usage ultérieur à un prix de revient très faible.

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