The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 18, 1995

Filed:

Dec. 26, 1991
Applicant:
Inventors:

George S Eisenbarth, Wellesley, MA (US);

Roberto Gianani, Boston, MA (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01N / ;
U.S. Cl.
CPC ...
435-721 ; 435-74 ; 436506 ; 436518 ; 436811 ;
Abstract

Two subsets of Islet Cell Autoantibodies (ICA), termed restricted and non-restricted, have been identified. The expression of non-restricted ICA correlates with progression to type I diabetes, indicating that these individuals are at much greater risk than are individuals expressing restricted ICA. Differentiation between restricted or non-restricted ICA allows for more accurate prognosis of the development of type I diabetes. Restricted ICA react with beta cells of human and rat islets but not mouse, whereas non-restricted ICA react with humans rat and mouse islets. Restricted ICA can be substantially completely absorbed by incubation with glutamic acid decarboxylase (GAD), whereas non-restricted ICA are partially or not at all absorbed by GAD. Restricted ICA react in a Stiff-Man Syndrome fashion including staining GABAergic neurons in brain sections and western blots of brain extracts, whereas non-restricted ICA does not react with either brain sections nor with GAD antigen in western blots. Restricted ICA contains a higher titer of anti-GAD antibodies than does non-restricted ICA.


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