research Stem Cells in the Hair Follicle and Interfollicular Epidermis of Mice Following Topical Application of Fluocinolone Acetonide
Fluocinolone acetonide slows down hair follicle stem cells but speeds up skin cell growth in mice.
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research Isolation of an Early Transit Amplifying Keratinocyte Population in Interfollicular Human Epidermis: A Role for CD271 Receptor
Scientists found a new type of skin cell that could help with skin repair and these cells work better with a certain protein.
research Single Cell Transcriptome Profiling of Human Interfollicular Epidermis Reveals Robust Heterogeneity and Divergent Differentiation Lineages
The human skin's outer layer has more variety in cell types and development paths than previously thought.
research Development of an Ex Vivo Human Skin Explant Model to Examine Candidate Gene Functions in the Hair Follicle and Epidermis
The model can effectively test gene functions and drug responses in human skin.
research Vitamin D and the Epidermis
Vitamin D is important for skin cell growth and health, and its active form and receptor play key roles in skin and hair processes.
research C-Myc Activation in Transgenic Mouse Epidermis Results in Mobilization of Stem Cells and Differentiation of Their Progeny
c-Myc activation in mouse skin increases sebaceous gland growth and affects hair follicle development.
research Expression of Type 1 5α-Reductase and Metabolism of Testosterone in Reconstructed Human Epidermis: A New Model for Screening Skin-Targeted Androgen Modulators
The study created a new method to test drugs that affect hormone processing in skin.
research The Early Region of Trichodysplasia Spinulosa Polyomavirus Drives Proliferation, Altered Differentiation, and Ectopic Expression of Hair Follicle Differentiation Markers in Interfollicular Tail Epidermis
The early genes of a specific virus can cause abnormal skin cell growth and hair follicle changes.
research Basal Cells in the Epidermis and Epidermal Differentiation
The exact identity of skin stem cells and how skin cells differentiate is not fully known.
research Evaluation of the Influence of Sunscreen Formulations and SPF on Genoprotection in a Hair Follicle-Derived Human Epidermis Model
Higher SPF sunscreens provide more DNA protection, and the form of sunscreen doesn't affect protection level.
research Study of the Impact of SKPs' Secreted Factors and a Botanical Extract Derived from Jasmine on Keratinocyte Growth and Reconstructed Human Epidermis Thickness
Jasmine extract helps skin cell growth and makes artificial skin thicker, especially when used with skin-derived precursors.
research Conditional Gene Expression in the Epidermis of Transgenic Mice Using the Tetracycline-Regulated Transactivators tTA and rTA Linked to the Keratin 5 Promoter
The system allows precise control of gene expression in mouse skin, useful for studying skin biology.
research Ultrastructure of the Contrasting Types of Keratinization Seen in the Tail Epidermis of the Laboratory Mouse Mus Musculus
Mouse tail skin has different keratinization near hair follicles and scales.
research Genetic Dissection of Retinoic Acid Function in Epidermis Physiology
Retinoic acid affects skin and hair health by working with specific receptors, and its absence can lead to hair loss and skin changes.
research Using the Frog Embryonic Epidermis as a Model to Study Desmosome Function During Development
Frog skin cells need the protein desmoplakin for proper development and cell layer formation.
research Morphologic Comparison of Cultured Human Epidermis Melanocytes, Amelanotic Melanocytes from Hair Follicles, and Mouse Melanoma Cells Observed by Atomic Force Microscope
Melanin granules can be expelled by exocytosis.
research Targeted Overexpression of the Angiogenesis Inhibitor Thrombospondin-1 in the Epidermis of Transgenic Mice Prevents Ultraviolet-B-Induced Angiogenesis and Cutaneous Photo-Damage
Overexpressing thrombospondin-1 in mice skin prevents UVB-induced skin damage.
research Ornithine Decarboxylase Activity in Relation to DNA Synthesis in Mouse Interfollicular Epidermis and Hair Follicles
research Topical Spermine And Putrescine Stimulated DNA Synthesis In The Hairless Mouse Epidermis
Topical putrescine and spermine increased DNA synthesis in hairless mouse skin.
research Induction of Ornithine Decarboxylase Activity in Hairless Rat Epidermis as a Pharmacological Model: Validation of the Animal Model
The study used hairless Sprague Dawley rats to assess the ability of retinoids to inhibit epidermal ornithine decarboxylase activity induced by sellotape stripping. A total of 100 rats (50 males and 50 females) aged 4 to 11 weeks were examined to validate the model. The study found that hair growth occurred at 6-7 weeks and 10-11 weeks, with more pronounced growth in males. No histological changes were observed in the stratum corneum, but an increase in epidermal thickness was noted in 9-week-old males. Sellotape stripping was more effective and consistent in females, with lower individual variation (5%-10% in females vs. 10%-20% in males). The research concluded that female rats aged about 8 weeks provided the most reproducible response and ease of use for this model.
research Targeted Deletion of Crif1 in Mouse Skin Epidermis Impairs Skin Homeostasis
Removing the Crif1 gene in mouse skin disrupts skin balance and hair growth.
research Impaired Wound Healing in Transgenic Mice Overexpressing the Activin Antagonist Follistatin in the Epidermis
Overexpressing follistatin in mice delays wound healing and reduces scar size.
research Partial Purification and Characterization of Two Distinct Types of Caspases from Human Epidermis
Two distinct caspases in human skin help with cell death and skin formation.
research Hairless And The Polyamine Putrescine Form A Negative Regulatory Loop In The Epidermis
The study explored the interaction between the nuclear protein Hairless (HR) and the polyamine putrescine in the epidermis, revealing a negative regulatory loop. Mutations in HR and overexpression of polyamine enzymes like ornithine decarboxylase (ODC) and spermidine/spermine N1-acetyltransferase (SSAT) led to hair loss and skin papules. The research showed that decreased HR levels resulted in increased ODC expression, and this regulation was influenced by the MYC superfamily of proteins. Elevated putrescine levels reduced HR expression, but the effects differed from HR mutations. Microarray analysis indicated that putrescine affected genes related to protein interactions and transcription, suggesting significant implications for epidermal homeostasis and hair follicle cycling.
research Commentary on: Hairless and the Polyamine Putrescine Form a Negative Regulatory Loop in the Epidermis
The commentary explains that a balance of HR protein and putrescine is important for normal hair growth.
research Three-Dimensional Imaging of Tight Junction Network Across Multiple Layers of Human Epidermis by Array Tomography Using Backscattered Electron-Mode Scanning Electron Microscopy
The study found that tight junctions reach the top layer of the skin's stratum granulosum, not just the second top layer as previously thought.
research Skin Morphogenesis by Coupling Biochemical-Bioelectric Signals: Calcium Oscillations Coordinate Dermal Cell Movement by Epidermis-Derived SHH Signaling During Feather Bud Orientation
Calcium signals and SHH guide the direction of feather growth in chicken skin.
research An Estrogen Receptor Pathway Regulates the Telogen-Anagen Hair Follicle Transition and Influences Epidermal Cell Proliferation
The estrogen receptor pathway controls hair growth cycles and affects skin cell growth.
research The Vitamin D Receptor Is a Wnt Effector That Controls Hair Follicle Differentiation and Specifies Tumor Type in Adult Epidermis
Vitamin D receptor helps control hair growth and could be used to treat certain skin tumors.
research Terbinafine Levels in Serum, Stratum Corneum, Dermis-Epidermis, Hair, Sebum, and Eccrine Sweat
Terbinafine quickly builds up in skin and hair, staying effective for over 3 weeks.