Collagen Fibers


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Related to Collagen Fibers: connective tissue, Elastic fibers

Collagen Fibers

 

fibers of the extracellular matter of connective tissue in animals and humans, consisting mainly of the protein collagen. Collagen fibers 1–12 microns (μ) thick are represented by unbranched threads, or fibrils (diameter 0.3–0.5 μ). The fibrils consist of microfibrils (400 angstroms [Å] thick), which have periodically alternating (640 Å) dark and light sections as a result of the regular distribution along them of molecules of procollagen, or tropocollagen. Microfibrils, from which the fibrils and collagen fibers are made up, form outside the cells by polymerization of tropocollagen, which is secreted by collagen-forming cells (fibroblasts, cartilage, bone, and so on). Collagen fibers are distinguished by great tensile strength and low elasticity; they fulfill a mechanical function. Collagen fibers in cartilage are called chondrin fibers, and fibers from bone are called ossein fibers.

References in periodicals archive ?
To examine the microanatomy and collagen fibers in colonies of Sarcophyton auritum, samples measuring ~ 4x3 [cm.
Masson's trichrome staining was done for assessing collagen fiber arrangement.
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In our study, histological analyses of neoformation tissue, obtained on the tenth day post-lesion, showed an increase in number of fibroblasts and collagen fibers in the two treated groups.
The observations like fibrosis, and collagen fibers were assessed and recorded on sami-quantitative scale of 0 to ++++.
2) However, when the inorganic scaffold surrounding the collagen fibrils of dentin is missing due to caries and/or acid etching, (4) collagen fibers become denuded and express MMP activity, which begins the degradation process.
The same collagen molecular building blocks extracted from the dinosaur fossils are found in sheltered portions of collagen fibers that, in rats and humans, are tucked away and so are perhaps less susceptible to degradation, researchers report online June 8 in PLoS ONE.
31, 2011, in Proceedings of the National Academy of Sciences, the generic angiotensin receptor blocker losartan (Cozaar) improved the effectiveness of two nanotherapeutics against several types of cancer by modifying the network of collagen fibers that characterizes most solid tumors.