Results 261 to 270 of about 2,942,836 (290)

Hydration and density of collagen and gelatin

Journal of Applied Polymer Science, 1964
AbstractThe 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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Collagen crosslinking and cell density have distinct effects on fibroblast‐mediated contraction of collagen gels

Skin Research and Technology, 2003
Background/purpose: Fibroblasts are actively and dynamically involved in wound healing (dermal regeneration, wound contraction, and scar contracture) and fibrosis. Fibroblast‐seeded collagen gels provide an in vitro model for these processes. Over time, fibroblasts will contract the gels, but the mechanisms are not completely understood. This research
Robert A, Redden, Edward J, Doolin
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The influence of age and sex on skin thickness, skin collagen and density

British Journal of Dermatology, 1975
Forearm skin collagen, dermal thickness and collagen density were measured in a large number of normal subjects as a standard reference for future studies. Skin collagen decreased with age and was less in the females at all ages. There is a direct relationship between skin collagen and dermal thickness but variations in collagen density in disease ...
S, Shuster, M M, Black, E, McVitie
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Effects of collagen density on cardiac fibroblast behavior and gene expression

Journal of Cellular Physiology, 2003
AbstractInteractions 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, Dacia, Sexton, Wayne, Carver   +2 more
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Fabrication of high-density collagen fibril matrix gels by renaturation of triple-helix collagen from gelatin

International Journal of Biological Macromolecules, 2013
Collagen-based 3-D hydrogels often lack sufficient mechanical strength for tissue engineering. We developed a method for fabrication of high-density collagen fibril matrix (CFM) gels from concentrated solutions of uncleaved gelatin (UCG). Denatured random-coil UCG exhibited more rapid and efficient renaturation into collagen triple-helix than cleaved ...
Yoshimi, Ohyabu, Shunji, Yunoki, Hirosuke, Hatayama, Yoshikazu, Teranishi   +3 more
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Hostophotometric estimation of volume density of collagen as an indication of fibrosis in rat liver

Histochemistry, 1986
The development of fibrosis in the liver of 16 rats treated for 1, 2, 3 or 4 weeks with CCl4, has been followed with chemical hydroxyproline determination and histophotometric analysis of histological sections stained with Sirius Red F3BA in saturated aqueous picric acid.
James, J., Bosch, K. S., Zuyderhoudt, F. M., Houtkooper, J. M., van Gool, J.   +4 more
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Biomechanics of breast tumor: effect of collagen and tissue density

International Journal of Mechanics and Materials in Design, 2012
Various clinical studies have established the influence of breast tissue density on the onset and formation of breast tumor. In this paper we develop a mathematical correlation of the change in density with the change in collagen content and the corresponding change in the bio-mechanical characteristics of the breast tissue. The developed computational
V. U. Unnikrishnan, G. U. Unnikrishnan, J. N. Reddy   +2 more
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Effects of Cell Seeding Density and Collagen Concentration on Contraction Kinetics of Mesenchymal Stem Cell–Seeded Collagen Constructs

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, Martin S, Levy, Anthony J, Huth, David L, Butler   +3 more
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Acellular and cellular high-density, collagen-fibril constructs with suprafibrillar organization

Biomaterials Science, 2016
Integrated use of collagen oligomers and confined compression for design of acellular and cellular high-density, collagen-fibril constructs with suprafibrillar organization.
Kevin M, Blum, Tyler, Novak, Lauren, Watkins, Corey P, Neu, Joseph M, Wallace, Zachary R, Bart, Sherry L, Voytik-Harbin   +6 more
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Inhibition by serum components of oxidation and collagen-binding of low-density lipoprotein

Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1992
Low-density lipoprotein (LDL) is oxidized by cellular and noncellular mechanisms, both leading to an increased binding to collagen. We have investigated the effect of serum on lipid peroxidation, apoprotein oxidation and the binding of oxidized apoprotein to collagen.
N, Kalant, S, McCormick
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