RHEUMATOID ARTHRITIS MARKER
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United States of America Patent
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Oct 29, 2015
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Oct 30, 2014
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Abstract
A method of evaluating disease activity of rheumatoid arthritis with good sensitivity by a simple method, and a kit for use in the method. It provides a Jacalin-binding O-linked oligosaccharide epitope as a negative marker for diagnosing rheumatoid arthritis, and enables more accurate assessment of disease condition by more objectively determining disease activity of rheumatoid arthritis using the amount of variation of a value obtained by multiplying the amount of MMP-3 in the blood or the amount of bound MMP-3 and ABA, ACA, or ACG in the blood by the reciprocal of the amount of bound MMP-3 and Jacalin in the blood. Through the discovery that an LEL or STL-reactive sugar chain on MMP-3 in the blood is a sugar chain marker for diagnosing polymyalgia rheumatica and relapsing polychondritis, the present invention also provides a method for accurate diagnosis of polymyalgia rheumatica and relapsing polychondritis.
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