Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving antigen-antibody binding – specific binding protein...
Patent
1992-10-06
1999-12-21
Wortman, Donna C.
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving antigen-antibody binding, specific binding protein...
435 78, 436506, 436811, G01N 33567
Patent
active
060047593
ABSTRACT:
Disclosed are compositions and methods for diagnosing autoimmune insulin dependent diabetes mellitus. In general, diagnostic methods of the invention include testing for the presence of an autoimmune immunoglobulin in a suspected patient's serum wherein the immunoglobulin is identified by its ability to interfere with the glucose transporting activity of a pancreatic islet cell glucose transporter. The inventors have discovered that the presence of such an autoimmune antibody in patient's serum is diagnostic of autoimmune insulin dependant diabetes mellitus. In particular aspects the diagnostic assay of the invention involves the incubation of isolated and dispersed islet cells, such as rat islet cells, in the presence of immunoglobulin obtained from the patient. Following such an incubation, the islet cells are tested for their ability to uptake glucose. A diagnosis is made through a determination that immunoglobulins in the serum of the patient specifically inhibit the uptake of glucose by the islet cells.
REFERENCES:
patent: 5175085 (1992-12-01), Johnson et al.
Johnson John H.
Unger Roger H.
Board of Regents , The University of Texas System
Wortman Donna C.
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