Keratin

Keratin is a family of tough, fibrous proteins that provides structural strength and protection in many biological tissues, including skin, hair, nails, feathers, and epithelial cells. Its durability arises from polypeptide chains that assemble into intermediate filaments, while interactions such as disulfide bonds help stabilize the protein network and influence tissue properties. In biology, keratin expression patterns help identify epithelial cell types and track processes such as tissue differentiation, development, and disease. Studying keratin also supports research on skin disorders, hair and nail abnormalities, wound repair, and protein-based biomaterials.

Keratin - Related Videos

Research

JoVE Journal - Bioengineering

Synthesis of Keratin-based Nanofiber for Biomedical Engineering

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Cited by 12 •

2016

Electrospun nanofibers have a high surface area to weight ratio, excellent mechanical integrity, and support cell growth and proliferation. These nanofibers have a wide range of biomedical applications. Here we fabricate keratin/ PCL nanofibers, using the electrospinning technique, and characterize the fibers for possible applications in tissue engineering.

Preparation of Keratin Hydrolysate from Chicken Feathers and Its Application in Cosmetics

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Cited by 23 •

2017

The goal of the protocol is to prepare keratin hydrolysate from chicken feathers by alkaline-enzymatic hydrolysis and to test whether adding keratin hydrolysate into a cosmetics ointment base improves skin barrier function (heightening hydration and diminishing transepidermal water loss). Tests are conducted on men and woman volunteers.

Training a Sophisticated Microsurgical Technique: Interposition of External Jugular Vein Graft in the Common Carotid Artery in Rats

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Cited by 9 •

2012

Neointimal hyperplasia is the primary cause of stenosis in arterialized veins. We propose a new protocol whereby the right external jugular vein is grafted using the cuff technique in the common carotid artery of Sprague Dawley rats. The survival rate was 100 % at the time point of sacrifice.

Fabrication and Use of MicroEnvironment microArrays (MEArrays)

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Cited by 25 •

2012

A combinatorial functional screening method for gaining insights into the impacts of the molecular composition of microenvironments on cellular functions is described. The method takes advantage of existing microarray-based technologies to generate arrays of defined combinatorial microenvironments that support cell adhesion and functional analysis.

Synthesis of Plant Phenol-derived Polymeric Dyes for Direct or Mordant-based Hair Dyeing

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Cited by 12 •

2016

Here, we present a protocol to use pre-synthesized polymeric products derived from fungal laccase-catalyzed polymerization of plant phenols, either with or without mordant agents (e.g., FeSO4), to induce detergent-resistant keratin hair dyeing within 2.5 hours.

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