Results 261 to 270 of about 437,388 (294)
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Improved In Vitro Angiogenesis Model by Collagen Density Reduction and the Use of Type III Collagen
Annals of Plastic Surgery, 1993Angiogenesis was examined by a three-dimensional model in vitro, using human umbilical vein endothelial cells (HUVECs) cultured in a collagen gel. An abundant capillary-like network with a lumen structure was identified histologically and shown to have formed at a collagen density of 0.05% or 0.10% instead of 0.15%, for either type I or type III ...
S, Kanzawa, H, Endo, N, Shioya
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Hydration and density of collagen and gelatin
Journal of Applied Polymer Science, 1964AbstractThe water sorption by adult and embryonic native and insoluble collagen was investigated, along with that of calfskin gelatin. Greater sorption was obtainable with the collagen fractions than with gelatin, but the technique could not distinguish the fractions themselves.
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Characterization of vascular density and collagenous matrix in oral pleomorphic adenomas
Minerva Stomatologica, 2020Tumor vascular density and collagen matrix organization are critical factors to neoplasia development and progression. This study aimed to analyze the variables associated with the extracellular matrix in oral pleomorphic adenomas.This cross-sectional study comparatively evaluated 21 cases of pleomorphic adenomas and 21 sections of regular oral mucosa ...
Flávia G, Rocha +4 more
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Acellular and cellular high-density, collagen-fibril constructs with suprafibrillar organization
Biomaterials Science, 2016Integrated use of collagen oligomers and confined compression for design of acellular and cellular high-density, collagen-fibril constructs with suprafibrillar organization.
Kevin M, Blum +6 more
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The axial electron density in collagen fibrils from human corneal stroma
Current Eye Research, 1982Low angle synchrotron X-ray diffraction patterns were obtained from the demembranated human corneal stroma. These patterns showed differences in the relative intensities of the meridional reflections compared to those obtained using bovine corneas. In particular, the first order reflection, conspicuously absent in the bovine pattern, is present in the ...
K M, Meek +3 more
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Effects of collagen density on cardiac fibroblast behavior and gene expression
Journal of Cellular Physiology, 2003AbstractInteractions between cells and the extracellular matrix (ECM) play essential roles in modulating cell behavior during development and disease. The myocardial ECM is composed predominantly of interstitial collagen type I and type III. The composition, organization, and accumulation of these collagens are altered concurrent with cardiovascular ...
Melissa Joy, Loftis +2 more
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Tissue Engineering, 2006
Our group has been engineering cell-scaffold constructs to improve tendon repair by contracting mesenchymal stem cells (MSCs) in collagen gels and then evaluating their repair potential in wound sites in rabbits. Because the construct's initial conditions may influence the ultimate repair outcome, this two-part study sought to distinguish which factors
Victor S, Nirmalanandhan +3 more
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Our group has been engineering cell-scaffold constructs to improve tendon repair by contracting mesenchymal stem cells (MSCs) in collagen gels and then evaluating their repair potential in wound sites in rabbits. Because the construct's initial conditions may influence the ultimate repair outcome, this two-part study sought to distinguish which factors
Victor S, Nirmalanandhan +3 more
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Band Densities in Unstained and “Negatively Stained” Collagen Fibrils
Proceedings, annual meeting, Electron Microscopy Society of America, 1971Three models for the 3-dimensional organization of tropocollagen macromolecules within the collagen fibril are currently in vogue. While all fairly similar, these models are largely based on, or in agreement with, electron micrographs from collagen stained with the “negative contrast” technique.
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Biomaterials, 2005
Dense collagen matrices obtained by using the property of type I collagen to form liquid crystals at high concentrations, were shown to be colonized by human dermal fibroblasts (Biomaterials 23 (2002) 27). In order to evaluate them as possible tissue substitutes, we investigated in this study the mechanism of cell colonization.
Hélary, Christophe +4 more
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Dense collagen matrices obtained by using the property of type I collagen to form liquid crystals at high concentrations, were shown to be colonized by human dermal fibroblasts (Biomaterials 23 (2002) 27). In order to evaluate them as possible tissue substitutes, we investigated in this study the mechanism of cell colonization.
Hélary, Christophe +4 more
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In vitro study of low density lipoprotein--collagen interaction.
Morphologie et embryologie, 1984Possibility of LDL--collagen complex formation was investigated in vitro by biochemical assay and electron microscopy. Types I and III collagen isolated from bovine thoracic aorta were incubated with human low density lipoproteins (LDL) at physiological ionic strength, pH and temperature.
M, Eskenasy, R, Mora, N, Simionescu
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