Biomarkers are used in compositions, combinations, systems, and methods for diagnosing, staging, and monitoring and/or treatment of osteoarthritis. The biomarkers discriminate osteoarthritis from rheumatoid arthritis, crystalline arthritis, septic arthritis, and/or traumatic injury, and can be used in a differential diagnosis of joint pain and/or joint inflammation.

An exemplary embodiment of the present disclosure provides a composition comprising two or more cytokines, and one or more of keratan sulfate, chondroitin sulfate, or hyaluronic acid. The composition can simulate a fluid from a patient. The simulated fluid has a viscosity, a storage modulus, and a loss modulus similar to that of patient-derived synovial fluid. A method for making a composition for simulating a fluid from a patient is also disclosed. The method includes creating a mixture comprising two or more cytokines, and one or more of keratan sulfate, chondroitin sulfate, or human serum albumin. The method also includes adding a low molecular weight hyaluronic acid to the mixture, adding a high molecular weight hyaluronic acid to the mixture, and incubating the mixture for a predetermined time at a temperature ranging from approximately 0° C. to approximately 10° C.

The present invention relates generally to the field of implant related risk of revision, in particular implant related risk of revision not caused by an infection or metal on metal reaction. The present invention provides methods of diagnosing implant related risk of revision, use of kits for such diagnostic purposes and compositions for use in the treatment of implant related risk of revision, in particular implant related risk of revision not caused by an infection or metal on metal reaction.

Disclosed is the novel use of TRIM24 and RIP3 as biomarkers for diagnosing osteoarthritis, in which it is first identified that TRIM24 and RIP3 can be used as biomarkers for diagnosing osteoarthritis by confirming the tendency of TRIM24 expression to decrease and RIP3 expression to increase at the onset of osteoarthritis. These two proteins are useful in confirming the change in the expression level from the onset of osteoarthritis, thus enabling early diagnosis of osteoarthritis and effectively blocking the progression of osteoarthritis at an early stage.

The present invention relates to mutants of S100A12 having at least one mutation in the high-affinity calcium binding hand or the low-affinity calcium binding hand or the zinc binding region. The present invention also relates to methods of detecting S100A12 dimers in a sample as well as methods of diagnosis using the S100A12 mutant of the invention, as well as to diagnostic compositions and kits comprising such an S100A12 mutant. The present invention further relates to a method of generating an antibody that specifically binds to an S100A12 dimer using the S100A12 mutant of the invention, as well as to an antibody that specifically binds to an S100A12 dimer.

The invention relates to methods of diagnosis, control and prophylaxis of inflammation and mitigation of inflammatory conditions, particularly arthritis and joint pain, in canines, comprising measuring inflammatory biomarkers wherein elevated levels of the biomarkers in blood correlates to reduced inflammation and reduced levels in blood correlates to increase level in the tissues. The invention further provides a method to treat or control inflammation comprising administering a diet comprising increased levels of one or more of DHA, EPA, vitamin C, vitamin E, and/or L-carnitine.

The present invention provides new protease resistant polypeptides, as well as compositions and methods for treating, ameliorating or preventing conditions related to joint damage, including acute joint injury and arthritis.

The present invention relates to biomarkers associated with the clinical response to an FGF-18 compound before or during treatment of a cartilage disorder. The present invention more particularly relates to specific proteins present in the blood, serum, synovial fluid or in the urine, which can be used for the diagnosis and treatment of cartilage disorders. The invention further discloses specific proteins that are related to cartilage response to an FGF-18 compound treatment as well as diagnostic tools and kits based on their expression profile. Thus, the invention can be used in predicting the response to an FGF-18 compound treatment, before starting the treatment with FGF-18 or during the treatment. It could be used for selecting/identifying subjects to be treated by intra-articular administration of an FGF-18 compound. The use of these biomarkers in diagnostics could result in increased benefit and reduced risk in subjects.

The present application relates to a composition for preventing or treating osteoarthritis, including an osteoclast-associated Ig-like receptor (OSCAR) protein inhibitor, a polynucleotide encoding an anti-OSCAR antibody or a fragment thereof, and an OSCAR protein inhibitor screening method. According to embodiments of the present application, the anti-osteoclast-associated Ig-like receptor (OSCAR) antibody or a fragment thereof of the present application may prevent or treat osteoarthritis through a mechanism for inhibiting the OSCAR-collagen interaction in chondrocytes, and an OSCAR protein inhibitor having an excellent effect of inhibiting the OSCAR-collagen interaction can be screened by using the OSCAR protein inhibitor screening method of the present application.

An in-vitro method for early diagnosing or prediction of immune-mediated inflammatory diseases, comprising: —obtaining a sample from a subject; —quantifying simultaneously by one LC/MS-MS analysis of said sample, a presence of V65 vitronectin fragment or fragment, variant or degradation product thereof; and a presence of a complement C3f or fragment or variant or degradation products thereof.