Results 211 to 220 of about 371,953 (265)
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Fibroblast contraction of a collagen–GAG matrix
Biomaterials, 2001Contractile cells, found in wounded or diseased tissues, are associated with the formation of scar tissue. The complexity of contraction in vivo has led to the development of models of contraction by cells in vitro. In this work, a device was developed which quantitatively measured the contractile force developed by fibroblasts seeded into a collagen ...
T M, Freyman +3 more
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Collagens and Cartilage Matrix Homeostasis
Clinical Orthopaedics & Related Research, 2004At least 27 types of collagen, the products of forty genes, are expressed in the tissues of higher vertebrates. Cartilage has a distinctive collagen phenotype. Two-thirds of the dry weight of adult articular cartilage is collagen. Proteolysis of this collagen framework is integral to the process of cartilage destruction and joint failure in ...
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Gingival Matrix Collagen in Chronic Periodontitis
Journal of Dental Research, 1980The isolation and characterization of cyanogen bromide peptides derived from the human gingival collagen of patients with chronic periodontitis revealed the presence of both Type I and Type III collagens in this tissue. The amount of Type III collagen, however, was found to be lower than that in normal gingival tissue.
O, Hammouda +4 more
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Collagen: the organic matrix of bone
Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1984Abstract Collagen is the principal organic matrix in bone. The triple helical region of the molecule is 1014 amino acids long. In fibrils these molecules are staggered axially by integers of 234 residues or 68 nm (D). This axial shift occurs by self-assembly and can be understood in terms of a periodicity in the occurrence of apolar ...
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Solubilization of Dentin Matrix Collagen in situ
Journal of Dental Research, 1992The effects of the oral environment on dentin matrix collagen were studied. In the partial prostheses of 12 participants, two completely demineralized dentin specimens were mounted covered by a Dacron gauze. After an experimental period of seven weeks, the specimens were transferred to a trypsin-containing buffer for determination of the amount of ...
A J, Van Strijp, B, Klont, J M, Ten Cate
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Collagen Matrix in Spinal Cord Injury
Journal of Neurotrauma, 2006The fibrous scar that develops after central nervous system (CNS) injury is considered a major impediment for axonal regeneration. It consists of a dense collagen IV meshwork, which serves as a binding matrix for numerous other extracellular matrix components and inhibitory molecules like proteoglycans and semaphorins, but also growth-promoting factors.
Nicole, Klapka, Hans Werner, Müller
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Echinoid Skeleton: Absence of a Collagenous Matrix
Science, 1970Lack of hydroxyproline and proline in the calcified distal spines and Aristotle's lantern of the echinoderm Strongylocentrotus indicated the absence of a collagenous matrix. The fact that the small amount of collagen present in the base of the spines and in the test with sutures was removed by bacterial collagenase ...
L, Klein, J D, Currey
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Collagenous bone matrix is a local mitogen
Nature, 1979THE importance of collagens in growth and differentiation1,2 and in cell adhesion3 is well documented. We have previously shown that cell-free, demineralised, collagenous bone matrix induces the formation of cartilage, bone and bone marrow4–6. One of the early responses to implanted collagenous matrix is the appearance of connective tissue mesenchymal ...
N C, Rath, A H, Reddi
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Evaluation of RGD Modification on Collagen Matrix
Artificial Cells, Blood Substitutes, and Biotechnology, 2006To observe the changes during the process of modificating collagen with Arg-Gly-Asp (RGD) peptide, a series experiments were designed.The 3D porous collagen matrices modified with RGD peptide were constructed by lyophilization. The modified and unmodified matrices were characterized by Scanning Electron Microscopy (SEM) and Electron Spectroscopy for ...
Dongfeng, Ren +4 more
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Collagens and collagen-related matrix components in the human and mouse eye
Progress in Retinal and Eye Research, 2004The three-dimensional structure of the eye plays an important role in providing a correct optical environment for vision. Much of this function is dependent on the unique structural features of ocular connective tissue, especially of the collagen types and their supramolecular structures.
Tapio, Ihanamäki +2 more
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