research Autophagy Controls Epidermal Tumour Formation and Hair Follicle Stem Cell Activation
Autophagy in skin cells is important for preventing inflammation, skin tumors, and controlling hair growth timing.
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research Characterization of Xenobiotic Metabolizing Enzymes of a Reconstructed Human Epidermal Model from Adult Hair Follicles
The reconstructed skin model from hair follicles functions like human skin in processing chemicals and can be used to test ingredient safety.
research Loss of Epidermal PLCγ1 Induced Sebaceous Gland Hyperplasia and Sparse Hair
Removing PLCg1 from skin cells caused thicker oil glands and less hair in mice.
research Development of a Novel Three-Dimensional Human Epidermal Model from Plucked Hair Follicle-Derived Keratinocytes
Scientists created a new 3D skin model from cells of plucked hairs that works like real skin and is easier to get.
research Amiodarone-Induced Toxic Epidermal Necrolysis; Nilotinib-Associated Cerebrovascular Disease and Stroke; Pisa Syndrome Caused by Paliperidone; Macroglossia Associated with Methylprednisolone; Aromatase Inhibitor-Induced Male Pattern Baldness in Women; Acute Liver Failure Due to Etodolac
Certain medications can cause serious side effects, including skin reactions, stroke, muscle disorders, tongue swelling, hair loss in women, and liver failure.
research Regeneration of Epidermal and Dental Tissues, Lens, and Cornea
Most vertebrates can regenerate skin, nails, and corneas, but only some can regenerate teeth and lenses.
research Special Issue on Epidermal and Hair Follicle Differentiation, Part 2
research Dermal β-Catenin Activity in Response to Epidermal Wnt Ligands Is Required for Fibroblast Proliferation and Hair Follicle Initiation
Skin needs dermal β-catenin activity for hair growth and skin cell multiplication.
research Evidence That Myc Activation Depletes the Epidermal Stem Cell Compartment by Modulating Adhesive Interactions with the Local Microenvironment
The study demonstrated that Myc activation in mouse epidermis led to the depletion of the epidermal stem cell compartment by altering adhesive interactions with the local microenvironment. This was evidenced by the transcriptional analysis of over 10,000 genes, revealing that Myc activation induced genes related to RNA and protein synthesis, cell proliferation, and differentiation, while downregulating over 40% of genes associated with cell adhesion and cytoskeleton proteins. These changes impaired keratinocyte adhesion, motility, and wound healing, correlating with decreased expression of extracellular matrix proteins and integrins, and reduced formation of hemidesmosomes and actomyosin cytoskeleton assembly. Consequently, Myc activation prompted stem cell exit and differentiation into sebocytes and interfollicular epidermis at the expense of hair lineages, due to impaired keratinocyte migration necessary for hair differentiation.
research Smad7-Induced Beta-Catenin Degradation Alters Epidermal Appendage Development
Too much Smad7 changes skin and hair development by breaking down a protein called β-catenin, leading to more oil glands and fewer hair follicles.
research Notch Signaling Regulates Late-Stage Epidermal Differentiation and Maintains Postnatal Hair Cycle Homeostasis
Notch signaling is essential for healthy skin and hair follicle maintenance.
research BLIMP1 Is Required for Postnatal Epidermal Homeostasis but Does Not Define a Sebaceous Gland Progenitor Under Steady-State Conditions
BLIMP1 is essential for skin maintenance but not for defining sebaceous gland progenitors.
research Barley Disease Susceptibility Factor RACB Acts in Epidermal Cell Polarity and Positioning of the Nucleus
RACB in barley is crucial for cell polarity and nucleus positioning, aiding fungal infection.
research GLI2-Specific Transcriptional Activation of the Bone Morphogenetic Protein/Activin Antagonist Follistatin in Human Epidermal Cells
GLI2 increases follistatin production in human skin cells.
research A New Hair Follicle-Derived Human Epidermal Model for the Evaluation of Sunscreen Genoprotection
The new lab-grown skin model is good for testing sunscreen's protection against DNA damage from UV light.
research Allergens of Permanent Hair Dyes Induce Epidermal Damage, Skin Barrier Loss, and IL-1 Alpha Increase in Epidermal In Vitro Model
Permanent hair dye mixtures can irritate and damage the skin.
research Advanced Glycation End-Products Inhibit Mesenchymal-Epidermal Interaction by Up-Regulating Proinflammatory Cytokines in Hair Follicles
AGEs may cause hair loss by increasing inflammation in hair follicles.
research Effect of Hataedock Treatment on Epidermal Structure Maintenance Through Intervention in the Endocannabinoid System
Hataedock treatment improved skin health and reduced atopic dermatitis symptoms by enhancing the skin barrier and reducing inflammation.
research Micro-Regional Transcriptome Reveals Local Dermal-Epidermal Intercorrelation in Atopic Dermatitis
Atopic dermatitis shows a link between skin layers in inflammation, detectable with detailed gene analysis.
research Reprogramming Adult Dermis to a Neonatal State Through Epidermal Activation of Beta-Catenin
Activating a protein called β-catenin in adult skin can make it behave like young skin, potentially helping with skin aging and hair loss.
research Induction of Ornithine Decarboxylase in Specific Subpopulations of Murine Epidermal Cells Following Multiple Exposures to 12-O-Tetradecanoylphorbol-13-Acetate, Mezerein, and Ethyl Phenylpropriolate
The study investigated the effects of multiple exposures to 12-O-tetradecanoylphorbol-13-acetate (TPA), mezerein, and ethyl phenylpropriolate (EPP) on murine epidermal cells, focusing on the induction of ornithine decarboxylase (ODC) activity. While single applications of these agents caused similar hyperplasia and ODC induction, multiple treatments revealed significant differences in ODC activity, with TPA and mezerein inducing more than EPP. Immunocytochemical analysis showed distinct patterns of ODC-positive cells, with TPA prominently affecting perifollicular cells, mezerein affecting both interfollicular and perifollicular areas, and EPP affecting only interfollicular cells. Flow cytometry identified three keratinocyte subpopulations, with TPA causing the expansion of an intermediate-sized subpopulation not seen with EPP or mezerein. The findings suggested that TPA, a potent tumor promoter, selectively expanded a keratinocyte subpopulation hyperinducible for ODC, potentially important for neoplastic transformation, while mezerein and EPP were less effective in this regard.
research Re-Investigating the Basement Membrane Zone of Psoriatic Epidermal Lesions: Is Laminin-511 a New Player in Psoriasis Pathogenesis?
Laminin-511 may contribute to psoriasis by affecting skin cell growth and survival.
research The Rho Guanosine Nucleotide Exchange Factors Vav2 And Vav3 Modulate Epidermal Stem Cell Function
Vav2 and Vav3 proteins help control skin stem cell numbers and activity in both healthy and cancerous cells.
research Low Temperature and MTOR Inhibition Favor Human Epidermal Stem Cell Maintenance
Keeping human skin stem cells is easier with low temperatures and mTOR inhibition.
research The ATP-Dependent Chromatin Remodeler BRG1 Controls Epidermal Keratinocyte Migration During Human Cutaneous Wound Healing
BRG1 is essential for skin cells to move and heal wounds properly.
research New Aspects of Galectin Functionality in Nuclei of Cultured Bone Marrow Stromal and Epidermal Cells: Biotinylated Galectins as a Tool to Detect Specific Binding Sites
Galectin-1 helps in RNA processing in cell nuclei.
research Progressive Alopecia Reveals Decreasing Stem Cell Activation Probability During Aging of Mice with Epidermal Deletion of DNA Methyltransferase 1
Mice lacking a key DNA methylation enzyme in skin cells have a lower chance of activating stem cells necessary for hair growth, leading to progressive hair loss.
research Differential Expression of Stem Cell Markers in Human Follicular Bulge and Interfollicular Epidermal Compartments
Different markers are found in stem cells of the scalp's hair follicle bulge and the surrounding skin.
research A Rare Repigmentation Pattern in a Vitiligo Patient: A Clue to an Epidermal Stem-Cell Reservoir of Melanocytes?
Repigmentation in vitiligo may come from melanocyte stem cells in the skin.
research Expansion of Hair Follicle Stem Cells Sticking to Isolated Sebaceous Glands to Generate In Vivo Epidermal Structures
Sebaceous glands can help harvest hair follicle stem cells to regenerate skin and hair.