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Aggrecan structure in amphibian cartilage BJMBR
Covizi,D.Z.; Carvalho,H.F..
The structure of the large proteoglycan present in the bullfrog epiphyseal cartilage was studied by immunochemical and biochemical methods. The isolated monomer showed a polydisperse behavior on Sepharose CL2B, with a peak at Kav = 0.14. Chondroitin sulfate chains were identified by HPLC analysis of the products formed by chondroitinase digestion and mercuric acetate treatment. These chains have approximately 38 disaccharides, a Di45:Di68 ratio of 1.6 and GalNAc4S + GalNAc4,6S are the main non-reducing terminals. Keratan sulfate was identified by the use of two monoclonal antibodies in Western blots after chondroitinase ABC treatment. A keratan sulfate-rich region (~110 kDa) was isolated by sequential treatment with chondroitinase ABC and proteases. We...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aggrecan; Bullfrog; Cartilage; Chondroitin sulfate; Epiphyseal cartilage.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000001200002
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Comparison of the effects of triamcinolone acetonide or platelet-rich plasma on expression of extracellular matrix-related genes in equine healthy chondrocytes in vitro Ciência Rural
Palma,Heloisa Einloft; Gallio,Miguel; Silva,Gabriele Biavaschi da; Cantarelli,Camila; Bertolin,Kalyne; Wolkmer,Patrícia; Wergutz,Julien; Krause,Luciana Maria Fontanari; Krause,Alexandre; Antoniazzi,Alfredo Quites; Brass,Karin Erica; Corte,Flavio Desessards De La.
ABSTRACT: In healthy cartilage, chondrocytes maintain an expression of collagens and proteoglycans and are sensitive to growth factors and cytokines that either enhance or reduce type II collagen synthesis. In osteoarthritis, pro-inflammatory cytokines, such as IL-6, induce overexpression of metalloproteinases (MMP) and decreasing synthesis of aggrecan. Use of chondroprotectors agents, such as Platelet-Rich Plasma (PRP) and triamcinolone (TA) are alternatives to reduce the progression of joint damage. In this study, we used chondrocytes extracted from metacarpophalangeal joints of healthy horses as the experimental model. Cells were treated in vitro with PRP or TA. No differences were observed between these treatments in comparison to the control group...
Tipo: Info:eu-repo/semantics/article Palavras-chave: MMPs; IL-6; Aggrecan; Cartilage; Osteoarthritis.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000700601
Registros recuperados: 2
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