Cardiology

3-D printing the human heart

A team of researchers from Carnegie Mellon University has published a paper in Science that details a new technique allowing anyone to 3-D bioprint tissue scaffolds out of collagen, the major structural protein in the human ...

Medical research

Mechanical stimuli significantly influence organ growth

In addition to chemical factors, mechanical influences play an important role in the natural growth of human organs such as kidneys, lungs and mammary glands—but also in the development of tumors. Now a research team at ...

Medical research

Hip fracture risk linked to nanoscale bone inflexibility

The study led by Imperial College London found that flexibility, as well as density, in the bone nanostructure is an important factor in assessing how likely someone is to suffer fractures.

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Collagen

Collagen /ˈkɒlədʒɨn/ is a group of naturally occurring proteins found in animals, especially in the flesh and connective tissues of mammals. It is the main component of connective tissue, and is the most abundant protein in mammals, making up about 25% to 35% of the whole-body protein content. Collagen, in the form of elongated fibrils, is mostly found in fibrous tissues such as tendon, ligament and skin, and is also abundant in cornea, cartilage, bone, blood vessels, the gut, and intervertebral disc. The fibroblast is the most common cell which creates collagen.

In muscle tissue, it serves as a major component of the endomysium. Collagen constitutes one to two percent of muscle tissue, and accounts for 6% of the weight of strong, tendinous muscles. Gelatin, which is used in food and industry, is collagen that has been irreversibly hydrolyzed.

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