Medical research

Skin aging: A synergy between cigarette smoke and sunlight

Combined exposure of the skin to cigarette smoke and UV rays could lead to faster premature aging, according to a study by Université Laval and the Centre de recherche du CHU de Québec-Université Laval.

Diseases, Conditions, Syndromes

iPSC-derived kidney organoids to model a lifelong renal disease

Researchers have generated induced pluripotent stem cell (iPSC)-derived kidney organoids to model Alport syndrome caused by a mutation in the COL4A5 gene and have demonstrated the utility of a chemical chaperone to rescue ...

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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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