scholarly journals Turnover of type II collagen and aggrecan in cartilage matrix at the onset of inflammatory arthritis in humans: Relationship to mediators of systemic and local inflammation

2003 ◽  
Vol 48 (11) ◽  
pp. 3085-3095 ◽  
Author(s):  
Alexander Fraser ◽  
Ursula Fearon ◽  
R. Clark Billinghurst ◽  
Mirela Ionescu ◽  
Richard Reece ◽  
...  
2010 ◽  
Vol 70 (2) ◽  
pp. 331-333 ◽  
Author(s):  
J. E. Freeston ◽  
P. Garnero ◽  
R. J. Wakefield ◽  
E. M. A. Hensor ◽  
P. G. Conaghan ◽  
...  

1994 ◽  
Vol 14 (5) ◽  
pp. 389
Author(s):  
Danny Chan ◽  
C.W. Chow ◽  
William G. Cole ◽  
John F. Bateman

2001 ◽  
Vol 44 (1) ◽  
pp. 120-127 ◽  
Author(s):  
Toshihisa Kojima ◽  
Fackson Mwale ◽  
Tadashi Yasuda ◽  
Christiane Girard ◽  
A. Robin Poole ◽  
...  

Development ◽  
1981 ◽  
Vol 62 (1) ◽  
pp. 165-182
Author(s):  
Kenneth S. Brown ◽  
Robert E. Cranley ◽  
Robert Greene ◽  
Hynda K. Kleinman ◽  
John P. Pennypacker

This paper describes a new autosomal incomplete dominant dwarfism, disproportionate micromelia, which has been characterized genetically and phenotypically, and the cartilage of homozygotes, and heterozygotes has been examined by histochemical, immunofluorescence and biochemical methods. Homozygotes, which die at birth, are disproportionately short and have cleft palates. The heterozygotes appear normal at birth but beginning at 1 week of age dwarfism is apparent and increases during growth. Histochemical and biochemical analyses of the cartilage rudiments of homozygotes at day 18 of gestation demonstrate that the cartilage growth plate is disorganized and that the matrix components, collagen and proteoglycan, are altered. Total collagen synthesis is reduced by approximately 30% and the amount of type II collagen is greatly reduced. By immunofluorescence staining with collagen antibodies, it appears that type II collagen is located primarily near the cell surface of chondrocytes but is poorly distributed throughout the remainder of the matrix. The amount of proteoglycan in the cartilage matrix is reduced by approximately 70% as determined by chemical analysis of hexosamines and by [35S]sulfate incorporation. Although the proteoglycans synthesized by the mutant are normal in size and in glycosaminoglycan composition, they were more easily extractable from the matrix than were normal cartilage proteoglycans. Heterozygotes had reduced cartilage matrix proteoglycan by histochemical methods, but the organization of the epiphyseal cartilage was not abnormal. These data suggest that a reduced or abnormal cartilage matrix is the cause of the dwarfism.


1997 ◽  
Vol 16 (3) ◽  
pp. 93-103 ◽  
Author(s):  
B.Kerry Maddox ◽  
Silvio Garofalo ◽  
Douglas R. Keene ◽  
Chad Smith ◽  
William A. Horton

1981 ◽  
Vol 90 (1) ◽  
pp. 78-83 ◽  
Author(s):  
W Dessau ◽  
B M Vertel ◽  
H von der Mark ◽  
K von der Mark

In previous studies were have reported on the secretion and extracellular deposition of type II collagen and fibronectin (Dessau et al., 1978, J. Cell Biol., 79:342-355) and chondroitin sulfate proteoglycan (CSPG) (Vertel and Dorfman, 1979, Proc. Natl. Acad. Sci. U. S. A. 76:1261-1264) in chondrocyte cultures. This study describes a combined effort to compare sequence and pattern of secretion and deposition of all three macromolecules in the same chondrocyte culture experiment. By immunofluorescence labeling experiments, we demonstrate that type II collagen, fibronectin, and CSPG reappear on the cell surface after enzymatic release of chondrocytes from embryonic chick cartilage but develop different patterns in the pericellular matrix. When chondrocytes spread on the culture dish, CSPG is deposited in the extracellular space as an amorphous mass and fibronectin forms fine, intercellular strands, whereas type II collagen disappears from the chondrocyte surface and remains absent from the extracellular space in early cultures. Only after cells in the center of chondrocyte colonies shape reassume spherical shape does the immunofluorescence reveal type II collagen in the refractile matrix characteristic of differentiated cartilage. By immunofluorescence double staining of the newly formed cartilage matrix, we demonstrate that CSPG spreads farther out into the extracellular space that type II collagen. Fibronectin finally disappears from the cartilage matrix.


1987 ◽  
Vol 104 (5) ◽  
pp. 1435-1441 ◽  
Author(s):  
A Hinek ◽  
A Reiner ◽  
A R Poole

We have shown that when chondrocytes are isolated by collagenase digestion of hyaline cartilage from growth plate, nasal, and epiphyseal cartilages of bovine fetuses they rapidly elaborate an extracellular matrix in culture. Only growth plate chondrocytes can calcify this matrix as ascertained by incorporation of 45Ca2+, detection of mineral with von Kossa's stain and electron microscopy. There is an extremely close direct correlation between 45Ca2+ incorporation in the first 24 h of culture and the content of the C-propeptide of type II collagen, measured by radioimmunoassay, at the time of isolation and during culture. Moreover, growth plate cells have an increased intracellular content of the C-propeptide per deoxyribonucleic acid and, during culture, per hydroxyproline (as a measure of helical collagen) compared with nasal and epiphyseal chondrocytes. In growth plate chondrocytes 24,25-dihydroxycholecalciferol (24,25-[OH]2D3), but not 1,25-dihydroxycholecalciferol alone, stimulates the net synthesis of the C-propeptide and calcification; proteoglycan net synthesis is unaffected. Together, these metabolites of vitamin D further stimulate C-propeptide net synthesis but do not further increase calcification stimulated by 24,25-(OH)2D3. These observations further demonstrate the close correlation between the C-propeptide of type II collagen and the calcification of cartilage matrix.


1998 ◽  
Vol 355 (2) ◽  
pp. 282-290 ◽  
Author(s):  
Russell J. Fernandes ◽  
Douglas J. Wilkin ◽  
Mary Ann Weis ◽  
William R. Wilcox ◽  
Daniel H. Cohn ◽  
...  

1986 ◽  
Vol 237 (3) ◽  
pp. 923-925 ◽  
Author(s):  
M Van der Rest ◽  
L C Rosenberg ◽  
B R Olsen ◽  
A R Poole

The primary structure of the cartilage matrix molecule chondrocalcin has been found to be identical with that of the C-propeptide of type II procollagen by comparing sequence analyses of the N-terminal regions and of tryptic peptides derived from chondrocalcin. This implies that in type II collagen the C-propeptide of type II collagen is employed not only in the assembly of the triple helix of type II collagen, as demonstrated previously, but in calcifying cartilage it may also be involved in those events leading to cartilage calcification, as earlier indicated.


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