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Hair and nail cells share similar proteins, indicating a common differentiation pathway.

The document concludes that understanding hair follicle biology can lead to better hair loss treatments.

Noggin is necessary to start the hair growth phase in skin after birth.

Skin needs dermal β-catenin activity for hair growth and skin cell multiplication.

Bone Morphogenetic Proteins (BMPs) help control skin health, hair growth, and color, and could potentially be used to treat skin and hair disorders.

Mouse hair follicle cells briefly grow during the early hair growth phase, showing that these cells are important for starting the hair cycle.

Prolactin contributes to hair loss by promoting hair follicle shrinkage and cell death.

Dexamethasone speeds up hair loss in mice, while cyclosporin A slows it down.

Macrophages help regrow hair by activating stem cells using AKT/β-catenin and TNF.

Thyroid hormones help hair grow, reduce hair loss, and increase hair pigment.

We need more research to better understand human hair follicle stem cells for improved treatments for hair loss and skin cancer.

The document concludes that assessing hair follicle damage due to cyclophosphamide in mice involves analyzing structural changes and suggests a scoring system for standardized evaluation.

Hair follicles are hormone-sensitive and involved in growth and other functions, with potential for new treatments, but more research is needed.

Prolactin affects hair growth cycles and can cause early hair follicle regression.

Exosomes from dermal papilla cells can help grow hair and might treat hair loss.

Follistatin helps hair growth and cycling, while activin prevents it.

Dermal Papilla cells are a promising tool for evaluating hair growth treatments.

The study identified and characterized new keratin genes linked to hair follicles and epithelial tissues.

Hedgehog signaling helps keep hair follicle stem cells the same in both young and old human skin.

Understanding how hair follicle stem cells work can help find new ways to prevent hair loss and promote hair growth.

Brain hormones significantly affect hair color and could potentially be used to prevent or reverse grey hair.

The document concludes that mouse models are crucial for studying hair biology and that all mutant mice may have hair growth abnormalities that require detailed analysis to identify.

Estrogens generally inhibit hair growth and improve skin quality, but their exact effects on hair follicles are complex and not fully understood.

Noncoding dsRNA boosts hair growth by activating TLR3 and increasing retinoic acid.

Genetic variations affecting skin structure play a key role in severe acne.

Hair follicles can help wounds heal faster and this knowledge could be used to treat chronic skin ulcers, with a potential use of a special stem cell hydrogel to enhance healing.

Autophagy is important for human hair growth and health.

Smad1 and Smad5 are essential for hair follicle development and stem cell sleepiness.

The experiment showed that human skin grown in the lab started to form early hair structures when special cell clusters were added.

Dogs could be good models for studying human hair growth and hair loss.