research Cortical cell types and intermediate filament arrangements correlate with fiber curvature in Japanese human hair
Hair curvature in Japanese people is linked to specific cell types and filament arrangements in the hair cortex.
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30 / 1000+ resultsresearch Effects of repeated exposure to ozonated water on hair fibre structure and integrity: Part I
This study examined the effects of repeated exposure to ozonated water on hair fibre structure and integrity. The results showed that ozonated water caused oxidative modifications in hair proteins, lipids, and pigments, leading to changes in structural, chemical, and functional properties. Specifically, there were increases in cysteic acid-related bands and carbonyl groups, indicating protein and lipid oxidation. Morphological changes included cuticle fusion and increased cortical fluorescence. Mechanical properties were affected, with increased denaturation temperature and post-yield stiffness, suggesting altered crosslink density and keratin disruption. Despite these changes, alterations in shine and colour were minimal. The study concludes that ozone exposure results in a unique damage signature affecting both the cuticle and cortex, warranting further investigation into lipidomic and biochemical changes and the hair's response to additional stressors.
research Cosmetic assessment of the human hair by confocal microscopy
Confocal microscopy is better than scanning electron microscopy for studying hair in its natural state and understanding hair products' effects.
research Acidic and basic hair/nail ("hard") keratins: their colocalization in upper cortical and cuticle cells of the human hair follicle and their relationship to "soft" keratins.
Hair and nail cells share similar proteins, indicating a common differentiation pathway.
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 Minoxidil Regulates Aging-Like Phenotypes in Rat Cortical Astrocytes In Vitro
Minoxidil may help reduce aging effects in brain cells.
research The inconsistent regulation of HOXC13 on different keratins and the regulation mechanism on HOXC13 in cashmere goat (Capra hircus)
The HOXC13 gene affects different hair proteins in cashmere goats in varied ways and is controlled by a feedback loop and other factors.
research Identification of an Intronic Regulatory Element Necessary for Tissue-Specific Expression of Foxn1 in Thymic Epithelial Cells
A specific DNA region is crucial for Foxn1 gene expression in thymus cells but not in hair follicles.
research DKK1 Mediated Inhibition of Wnt Signaling in Postnatal Mice Leads to Loss of TEC Progenitors and Thymic Degeneration
Blocking Wnt signaling in young mice causes thymus shrinkage and cell loss, but recovery is possible when the block is removed.
research Characterization and Chromosomal Localization of Human Hair-Specific Keratin Genes and Comparative Expression During the Hair Growth Cycle
Two specific hair keratin genes are active during hair growth and decline as hair transitions to rest.
research A function for Rac1 in the terminal differentiation and pigmentation of hair
Rac1 is essential for proper hair structure and color.
research Ultrastructural immunolocalization of involucrin in the medulla and inner root sheath of the human hair
Involucrin helps strengthen the inner parts of human hair.
research P63 targeted deletion under the FOXN1 promoter disrupts pre-and post-natal thymus development, function and maintenance as well as induces severe hair loss
Deleting the p63 gene in certain cells causes problems in thymus development and severe hair loss in mice.
research A New Permanent Straightening Process of Human Hair Using the Water Set
The new hair straightening method keeps hair straight permanently by using specific creams and heat.
research The anxiolytic effect of pregnancy in rats is reversed by finasteride
Pregnancy reduces anxiety in rats, but finasteride reverses this effect.
research Synchronously developing collet hairs in Arabidopsis thaliana provide an easily accessible system for studying nuclear movement and endoreduplication
Arabidopsis collet hairs are good for studying nuclear movement and DNA content increase during growth.
research Angelica sinensis promotes cortical regeneration of the thymus in mice with acute thymic involution induced by short-term rapamycin treatment
Angelica sinensis helps repair and regenerate the thymus in mice.
research Local Microenvironment Provides Important Cues for Cell Differentiation in Lingual Epithelia
The local environment is crucial for cell development in the tongue.
research The Secrets of Beautiful Hair: Why is it Flexible and Elastic?
Beautiful hair is flexible and elastic due to its unique double-layered structure and can be enhanced with succinic acid treatment.
research Investigation of ROP GTPase Activity and Cytoskeleton Dynamics During Tip Growth in Root Hairs and Pollen Tubes
ROP GTPase helps control the growth of pollen tubes and root hairs by managing cell structure and movement.
research Spatiotemporal dynamics of sensory neuron and Merkel-cell remodeling are decoupled during epidermal homeostasis
Sensory neuron remodeling and Merkel-cell changes happen independently during skin maintenance.
research Quantifying Polymer Deposition on Hair Fibers by Microfluorometry
Microfluorometry effectively measures how much polymer coats and penetrates hair, useful for evaluating hair products.
research Molecular Dissection of Mesenchymal–Epithelial Interactions in the Hair Follicle
Understanding gene expression in hair follicles can reveal insights into hair growth and disorders.
research Porosity at Different Structural Levels in Human and Yak Belly Hair and Its Effect on Hair Dyeing
Yak belly hair has higher porosity and is less stiff than human hair, making it absorb dye better but less suitable as a direct substitute for hair dyeing.
research Multimodal imaging of hair follicle bulge-derived stem cells in a mouse model of traumatic brain injury
Hair follicle stem cells might help treat traumatic brain injury.
research Standardization of Sphagneticola calendulacea (L.) Pruski. Stem
The study established quality standards for Sphagneticola calendulacea stem and suggested it may have therapeutic benefits.
research Formulation and Evaluation of PLGA Nanoparticulate-Based Microneedle System for Potential Treatment of Neurological Diseases
The microneedle system shows promise for non-invasive brain drug delivery.
research Monitoring of Wool Stretching Process Using Polarized Second Harmonic Generation
Stretching wool changes its structure and improves fiber alignment.
research The mechanisms and functions of interorganelle interactions
Different parts of cells interact at specific areas to control cell functions like energy production and fat storage.
research Ex vivo SIM-AFM measurements reveal the spatial correlation of stiffness and molecular distributions in 3D living tissue
Collagen makes skin stiff, and preservation methods greatly increase tissue stiffness.