research Convergent Evolution of Cysteine-Rich Keratins in Hard Skin Appendages of Terrestrial Vertebrates
Cysteine-rich keratins evolved independently in mammals, reptiles, and birds for hard skin structures like hair, claws, and feathers.
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research Size Polymorphisms in the Human Ultrahigh Sulfur Hair Keratin-Associated Protein 4, KAP4, Gene Family
The study found that variations in hair protein genes are likely due to evolutionary deletions or duplications.
research Structural Analysis of the Outermost Hair Surface Using TOF-SIMS with Gas Cluster Ion Beam Sputtering
The hair's outermost surface has multiple layers of lipids and proteins.
research Evolution of Trichocyte Keratins
Hair keratins evolved from ancient proteins, diversifying through gene changes, crucial for forming claws and later hair in mammals.
research Organization and Expression of Hair Follicle Genes
Hair growth is controlled by specific gene clusters and proteins, and cysteine affects hair gene expression in sheep.
research Immunolocalization of a Histidine-Rich Epidermal Differentiation Protein in the Chicken Supports the Hypothesis of an Evolutionary Developmental Link Between the Embryonic Subperiderm and Feather Barbs and Barbules
A specific protein in chicken embryos links early skin layers to feather development.
research Characterization of Human KAP24.1, A Cuticular Hair Keratin-Associated Protein with Unusual Amino Acid Composition and Repeat Structure
Scientists discovered a unique hair protein, KAP24.1, with a special structure, found only in the upper part of hair cuticles.
research The Susceptibility of Disulfide Bonds to Modification in Keratin Fibers Undergoing Tensile Stress
Disulfide bonds in keratin fibers break more easily under stress, especially when wet, affecting fiber strength.
research Amino Acids, Peptides, And Proteins In Cosmetic Science
The document concludes that cosmetics need biocompatible, eco-friendly ingredients due to aging populations and demand for effective products.
research Protein And Sulfur Amino Acid Nutrition Of Hair Fiber-Producing Angora And Cashmere Goats
Giving high-quality protein or methionine supplements helps improve hair growth in Angora goats and, to a lesser extent, in Cashmere goats.
research Mammalian Keratin-Associated Proteins (KRTAPs) Subgenomes: Disentangling Hair Diversity and Adaptation to Terrestrial and Aquatic Environments
Different hair types in mammals are linked to variations in specific protein genes, with changes influenced by their living environments.
research Adenosine Stimulates Growth of Dermal Papilla and Lengthens the Anagen Phase by Increasing the Cysteine Level via Fibroblast Growth Factors 2 and 7 in an Organ Culture of Mouse Vibrissae Hair Follicles
Adenosine helps hair grow longer and stronger by boosting certain growth factors and signaling pathways.
research Characterization of a Cluster of Human High/Ultrahigh Sulfur Keratin-Associated Protein Genes Embedded in the Type I Keratin Gene Domain on Chromosome 17q12-21
A cluster of sulfur-rich hair protein genes was found on chromosome 17.
research Sequence and Expression of Human Hair Keratin Genes
Human hair keratin genes are similar to mouse genes and are specifically expressed in hair follicles.
research The Role of Dexamethasone in Mediating the Contradictory Effects of Wnt Antagonists SFRP2 and SFRP3 on Human Hair Follicle Growth
Dexamethasone affects hair growth by altering levels of proteins that either promote or inhibit hair follicle growth.
research Expression of Novel Keratin-Associated Protein 5 Genes in the Cuticle Layer of Human Hair Follicles
The study found nine new hair protein genes in human hair follicles.
research Stiffness of Human Hair Correlates with the Fractions of Cortical Cell Types
Hair stiffness is higher when it has more para-like cortical cells.
research Human Hair Keratin Responds to Oxidative Stress via Reactive Sulfur and Supersulfides
Human hair strength and health are linked to sulfur compounds that can be reduced by stress but improved with sulfur supplements.
research Cyclic Alopecia and Abnormal Epidermal Cornification in Zdhhc13-Deficient Mice Reveal the Importance of Palmitoylation in Hair and Skin Differentiation
The enzyme DHHC13 is essential for healthy hair and skin, and its deficiency leads to hair loss and skin problems.
research Correlation Analysis of Four KRTAP Gene Polymorphisms and Cashmere Fiber Diameters in Two Cashmere Goat Breeds
Certain gene variations are linked to the thickness of cashmere goat hair.
research Epidermal Notch Signaling: Differentiation, Cancer, and Adhesion
Notch signalling helps skin cells differentiate and prevents tumors.
research Androgen Effects in Mammals
Testosterone is crucial for development, growth, and various body functions in mammals.
research Discussion: Themes in the Molecular Structure of Hair
Keratin proteins are crucial for hair structure and strength.
research Isolation and Characterization of Recombinant Murine Wnt3a
Scientists successfully purified a protein called Wnt3a, which is involved in processes like hair growth, but the overall yield was low, suggesting more work is needed to improve this.
research Age-Related Changes in Human Scalp Extracellular Matrix: Implications for the Hair Follicle
Older women's scalp cells show changes that could contribute to hair thinning.
research The Human Type II Keratin Gene Cluster on Chromosome 12q13.13: Final Count or Hidden Secrets?
The document concludes that the human keratin gene cluster is complex, with a need for updated naming to reflect over 50 functional genes important for hair and skin biology.
research Biology of Human Hair: Know Your Hair to Control It
Understanding hair biology is key to developing better treatments for hair and scalp issues.
research Cosmetic Approach for Healthy and Damaged Hair
Cosmetic procedures can harm hair, but damage can be minimized with knowledge and care; however, once hair is damaged, it cannot be reliably repaired.
research Ectodysplasin A (EDA) Signaling: From Skin Appendage to Multiple Diseases
EDA signaling is linked to skin disorders, various cancers, and liver disease.
research Genetics of Structural Hair Disorders
The document concludes that over 500 genes are linked to hair disorders and this knowledge is important for creating new treatments.