title: Cartilage matrix macromolecules in lavage fluid of temporomandibular joints before and 6 months after diskectomy.
abstract: The purpose was to investigate if antigenic fragments of aggrecan and cartilage oligomeric matrix protein (COMP) are detectable by enzyme-linked immunosorbent assay in lavage fluids from the temporomandibular joint (TMJ) and to examine if the relative content of these cartilage markers changes during development of osteoarthrosis (OA) after diskectomy. Lavage fluid was obtained at surgery and 6 months postoperatively in 13 patients. Computed tomography or magnetic resonance imaging was without evidence of hard-tissue changes prior to surgery in all patients. In 9 of the patients, sufficient material for analysis was obtained at both examinations. Aggrecan and COMP were detectable in all but 2 fluids, in which the COMP levels were below detection limit. The aggrecan/COMP ratio increased in all 9 patients during the 6-month period, indicating increased release of aggrecan relative to COMP fragments. The changed aggrecan/COMP ratio possibly reflects increased cartilage turnover during development of OA. Changes compatible with OA were present on computed tomography in all cases at the 6-month follow-up. This study shows that the lavage procedure is feasible for obtaining synovial fluid from the TMJ for immunochemical analyses of tissue-derived macromolecules.
authors.affiliation: Department of Oral Radiology, Institute for Postgraduate Dental Education, Jönköping, Sweden. flygare@odont.itjkpg.se
authors.forename: L
authors.initials: L
authors.lastname: Flygare
authors.forename: M
authors.initials: M
authors.lastname: Wendel
authors.forename: T
authors.initials: T
authors.lastname: Saxne
authors.forename: S
authors.initials: S
authors.lastname: Ericson
authors.forename: L
authors.initials: L
authors.lastname: Eriksson
authors.forename: A
authors.initials: A
authors.lastname: Petersson
authors.forename: M
authors.initials: M
authors.lastname: Rohlin
mesh_terms: D000293:Adolescent; D000328:Adult; D053674:Aggrecans; D000941:Antigens / Q000032:analysis; D015415:Biomarkers / Q000032:analysis; D064236:Cartilage Oligomeric Matrix Protein; D002358:Cartilage, Articular / Q000737:chemistry* / Q000378:metabolism; D011508:Chondroitin Sulfate Proteoglycans / Q000032:analysis*; D004797:Enzyme-Linked Immunosorbent Assay; D016326:Extracellular Matrix Proteins / Q000032:analysis*; D005240:Feasibility Studies; D005260:Female; D005500:Follow-Up Studies; D006023:Glycoproteins / Q000032:analysis*; D006801:Humans; D007150:Immunohistochemistry; D037181:Lectins, C-Type; D046911:Macromolecular Substances; D008279:Magnetic Resonance Imaging; D008297:Male; D064235:Matrilin Proteins; D008875:Middle Aged; D010003:Osteoarthritis / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology; D011509:Proteoglycans / Q000032:analysis*; D013582:Synovial Fluid / Q000737:chemistry*; D013704:Temporomandibular Joint / Q000000981:diagnostic imaging / Q000378:metabolism* / Q000473:pathology; D019224:Temporomandibular Joint Disc / Q000601:surgery*; D007507:Therapeutic Irrigation; D014057:Tomography, X-Ray Computed
chemical_list: D053674:Aggrecans; D000941:Antigens; D015415:Biomarkers; D064236:Cartilage Oligomeric Matrix Protein; D011508:Chondroitin Sulfate Proteoglycans; D016326:Extracellular Matrix Proteins; D006023:Glycoproteins; D037181:Lectins, C-Type; D046911:Macromolecular Substances; D064235:Matrilin Proteins; D011509:Proteoglycans; C577553:TSP5 protein, human