research Dermal Papilla Cell Number Specifies Hair Size, Shape, and Cycling, and Its Reduction Causes Follicular Decline
More dermal papilla cells in hair follicles lead to larger, healthier hair, while fewer cells cause hair thinning and loss.
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research Exposure to Gamma-Rays at the Telogen Phase of the Hair Cycle Inhibits Hair Follicle Regeneration at the Anagen Phase in Mice
Gamma-rays exposure during the resting phase of hair growth can damage hair regeneration and color in mice.
research The Pathogenesis and Treatment Progress of Androgenic Alopecia
Future treatments for androgenic alopecia may focus on reactivating hair follicle stem cells and improving drug delivery.
research The Thinning Top: Why Older People Have Less Hair
Old people have less hair because their hair follicles don't regenerate as well, not because of fewer stem cells, and a protein called follistatin might help reactivate hair growth.
research Disorders of Ovulation
Ovulation disorders are a major cause of infertility and menstrual problems in women.
research Substance P Prolongs Human Hair Growth In Vitro
Substance P helps hair grow longer and faster.
research The Pathogenesis of Alopecia Areata
Alopecia areata is likely caused by a combination of genetic factors and immune system dysfunction, and may represent different diseases with various causes.
research Alopecia Areata: Gene Expression in Skin Samples from Patients
Alopecia areata involves immune response and gene changes affecting hair loss.
research The Etiology and Pathogenesis of Alopecia Areata
The cause of alopecia areata is likely a mix of genetics, immune system issues, and environmental factors, with more research needed to understand it fully.
research Approach to Investigation of Hyperandrogenism in a Postmenopausal Woman
Postmenopausal hyperandrogenism, a condition with symptoms like increased hair growth and acne, is usually caused by PCOS but can also be due to other factors. It's diagnosed by checking testosterone levels and treated either by removing the adrenal tumor or through antiandrogen therapy.
research Bisindolylmaleimide Protein Kinase C Inhibitors Delay the Decline in DNA Synthesis in Mouse Hair Follicle Organ Cultures
A certain inhibitor can slow down the decrease in DNA creation in mouse hair follicles, which might help with hair growth.
research Editorial: Hair Follicle Stem Cell Regeneration in Aging
Aging causes hair loss and graying due to stem cell decline and changes in cell behavior and communication.
research Dysfunction of Hair Follicle Mesenchymal Progenitors Is Associated with Age-Related Hair Loss
Age-related hair loss is linked to the decline and dysfunction of hair follicle stem cells.
research Advanced Age Impairs Self-Renewal and Biases Fate Choice of Hair Follicle Dermal Stem Cells
Older hair follicle stem cells have a reduced ability to renew themselves, leading to more hair loss.
research Human Hair Follicle and Epidermal Melanocytes Exhibit Striking Differences in Their Aging Profile Involving Catalase
Hair follicle cells age faster and lose pigment due to less catalase, causing hair to turn gray.
research Clonal Multipotency and Effect of Long-Term In Vitro Expansion on Differentiation Potential of Human Hair Follicle Derived Mesenchymal Stem Cells
Human hair follicle stem cells can turn into multiple cell types but lose some of this ability after being grown in the lab for a long time.
research Extracellular Proteoglycan Decorin Maintains Human Hair Follicle Stem Cells
Decorin helps keep hair follicle stem cells and may prevent age-related hair loss.
research Aging and Colony-Forming Efficiency of Human Hair Follicle Keratinocytes
Aging reduces the ability of human hair follicle cells to form new cell colonies.
research Early-Age-Dependent Selective Decrease of Differentiation Potential of Hair-Follicle-Associated Pluripotent Stem Cells to Beating Cardiac-Muscle Cells
Younger mice's hair-follicle stem cells are better at turning into heart cells than older mice's.
research Wound-Induced Hair Neogenesis: A Novel Paradigm for Studying Regeneration and Aging
Wounds can regenerate hair in young mice, but this ability declines with age, offering insights for improving tissue regeneration in the elderly.
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 Age-Associated Decrease in GDNF and Its Cognate Receptor GFRα-1 Protein Expression in Human Skin
Human skin has less GDNF and its receptor with age.
research Comparative Biology of Tissue Repair, Regeneration, and Aging
The symposium concluded that understanding how different species repair tissue and how this changes with age can help advance regenerative medicine.
research Serum-Free Culture of Wool Follicles: Effects of Nutrients, Growth Factors, and Hormones
Wool follicles grew fibres for 8-10 days in a serum-free culture, influenced by calcium, glucose, amino acids, and insulin.
research Effect of Immunization Against Melatonin on Seasonal Fleece Growth in Feral Goats
Immunizing goats against melatonin can temporarily change their cashmere growth cycles and increase fleece production.
research Effects of Long-Term Treatment With Finasteride (MK-906), a 5-Alpha Reductase Inhibitor, on Circulating LH, FSH, Prolactin, and Estradiol
Finasteride safely lowers DHT levels without affecting hormone levels, helping with conditions like enlarged prostate, acne, and hair loss.
research Animal Fibre: Connecting Science and Production
Improving knowledge and practices in animal fibre production is crucial to meet market demands and potentially revive natural fibres.
research Comparison of Clinical and Biochemical Markers of Hirsutism in Polycystic Ovary Syndrome: A Study from a Teaching Hospital in Sri Ramachandra Institute, Chennai, India
Women with PCOS have higher levels of certain androgens, which are good at predicting excess hair growth.
research Deletion of the Developmentally Essential Gene ATR in Adult Mice Leads to Age-Related Phenotypes and Stem Cell Loss
Removing the ATR gene in adult mice causes rapid aging and stem cell loss.
research Age-Associated Inflammation Inhibits Epidermal Stem Cell Function
Aging causes skin stem cells to work less effectively.