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research Differential Effects of Caffeine on Hair Shaft Elongation, Matrix and Outer Root Sheath Keratinocyte Proliferation, and Transforming Growth Factor-β2/Insulin-Like Growth Factor-1-Mediated Regulation of the Hair Cycle in Male and Female Human Hair Follicles In Vitro
Caffeine affects hair growth and health differently in men and women.
research Defining the Molecular Signature of the Hair Follicle Dermal Sheath and Its Functional Requirement for Hair Cycle Progression During Catagen
The hair follicle dermal sheath is essential for hair shedding and needs to communicate with the outer root sheath for normal hair growth cycles.
research Loose Anagen Hair of Childhood: The Phenomenon of Easily Pluckable Hair
Children with loose anagen hair have easily pluckable hair due to root sheath problems, and it might improve without treatment.
research Follicular Streamers (Stelae) in Scarring and Non-Scarring Alopecia
Hair root sheaths are more common in non-scarring hair loss and help diagnose the type of hair loss.
research Hair-Root Changes in Andean Indian Children During Marasmic Kwashiorkor
Malnourished Andean Indian children had abnormal hair roots compared to healthy children.
research A Study of the Differentiation Products of the Hair Follicle Cells with the Electron Microscope
Hair follicle cells become four types: medulla, cortex, cuticle, and inner root sheath.
research Immunohistochemical Localization of Fibroblast Growth Factor 18 in Hair Follicles of Healthy Beagle Dogs
FGF18 is present in beagle dog hair follicles, mainly in the inner root sheath.
research Nestin as a Marker of Unipotent Embryonic and Adult Progenitors Differentiating into an Epithelial Cell Lineage of the Hair Follicles
Nestin identifies specific progenitor cells in hair follicles that can become outer root sheath cells.
research Woolly Antics Between the Sheaths
Lipase H is important for hair follicle function and shaping hair fibers.
research Early and Late Matrix Progenitors Form the Terminally Differentiated Cell Layers of the Hair Follicle
Early and late matrix progenitors in hair follicles create different cell layers, with early ones forming the companion layer and later ones forming the inner root sheath and hair shaft.
research Location and Fine Structure of Melanocytes in Human Fetal Scalp Hair Follicles
Melanocytes in the outer root sheath are likely stem cells that grow fast but stay immature.
research Hair Root Studies in Patients Suffering from Primary and Secondary Syphilis
Syphilis patients showed abnormal hair root changes, with no difference between primary and secondary stages.
research The Effect of Cilostazol, a Phosphodiesterase 3 (PDE3) Inhibitor, on Human Hair Growth with Dual Promoting Mechanisms
Cilostazol helps hair grow by making hair root cells grow faster and changing growth factor levels.
research Hair-Growth-Promoting Effect of Conditioned Medium of High Integrin α6 and Low CD71 Positive Keratinocyte Cells
A special mix from certain skin cells can help hair grow by making hair root cells grow faster and activating growth signals.
research Wnt/B-Catenin and ERK Pathway Activation: The Possible Mechanism of Various Light-Emitting Diode Light Regulates the Proliferation of Human Outer Root Sheath Cells
LED light helps human hair root cells grow and prevents them from dying by activating specific growth pathways.
research 5α-Reductase Activity in the Human Hair Follicle Concentrates in the Dermal Papilla
The enzyme that changes testosterone to a stronger form is mostly found in the part of the hair follicle called the dermal papilla.
research Loose Anagen Syndrome And Loose Anagen Hair
Loose Anagen Syndrome causes easy-to-pull, thin hair, mainly in young girls, and improves with age.
research Loose Anagen Hair Syndrome in Children of Upper Egypt
Loose Anagen Hair syndrome occurs in dark-skinned children and often improves on its own.
research Cetuximab-Induced Hypertrichosis of the Scalp and Eyelashes
A cancer drug caused unusual hair growth on a 100-year-old man's scalp and eyelashes.
research The Hair Shaft: Normality, Abnormality, and Genetics
Hair microscopy is useful for diagnosing hair disorders, but clear definitions are needed for accurate genetic analysis.
research Expression and Distribution of the Guanine Nucleotide-Binding Protein Subunit Alpha-S in Mice Skin Tissues and Its Association with White and Black Coat Colors
The protein Gnαs is found more in black mice than white mice and may influence their coat color.
research Spatiotemporal Expression Characterization of KRTAP6 Family Genes and Its Effect on Wool Traits
KRTAP6 genes affect wool quality in sheep.
research Inductive Properties of Hair Follicle Cells
Hair growth can be induced by certain cells found at the base of hair follicles, and these cells may also influence hair development and regeneration.
research CD10 and CD34 in Fetal and Adult Human Hair Follicles: Dynamic Changes in Their Immunohistochemical Expression During Embryogenesis and Hair Cycling
CD10 and CD34 levels change during hair development and different hair growth stages, which could be important for hair regeneration treatments.
research Immunocytochemical Localization of Androgen Receptors in the Scalp of the Stumptail Macaque Monkey, a Model of Androgenetic Alopecia
Androgen receptors found in monkey scalps, similar to humans, affect hair growth.
research An Extract of Leontopodium Alpinum Prolongs Anagen Phase in Human Hair Follicles Ex Vivo
Leontopodium alpinum extract may help reduce hair shedding by keeping hair in the growth phase longer.
research A Contemporary View on Felix Pinkus’ Concept of the Vitreous Membrane
The vitreous membrane in hair follicles changes shape during the hair cycle and may affect hair growth and nutrient exchange.
research Hair Follicle Markers, Expression and Modulation: Studies on Human Scalp Skin Grafts
Activating cAMP and ATP improves hair growth and strength.
research Hair Follicle Cell Mixture Forms Hair Follicle-Like Structures After Subcutaneous Implantation in Nude Mice
Implanted human scalp cells can regenerate hair-like structures in mice.