FIELD: medicine.
SUBSTANCE: what is presented is a method for differentiation of osteoarthritis, rheumatoid arthritis, and non-pathological states in a sample, including the measurement of the concentration of the peptide of a C1 protein 2 chain of the cartilage intermediate layer (CILP-2). The high level of the C1 protein 2 chain CILP-2 compared with rheumatoid arthritis and the normal state indicates that the patient has osteoarthritis. What is also presented is a peptide for differentiation of osteoarthritis and rheumatoid arthritis and non-pathological states, comprising SEQ ID NO:1. There are presented antibodies immunoreactive to the mentioned peptide, and a kit containing the antibodies and the analysis regulation.
EFFECT: effective agents and methods for differentiation of osteoarthritis, rheumatoid arthritis and non-pathological states by the increase of the concentration of the C1 protein 2 chain of the cartilage intermediate layer in the sample.
7 cl, 2 dwg, 4 ex
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