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The Sonic hedgehog pathway is crucial for new hair growth during mouse skin healing.

Too much androgen can cause hair loss; finasteride may help.

Liposomes improve drug delivery and reduce skin irritation in dermatology.

The niche environment controls stem cell behavior and plasticity, which is important for tissue health and repair.

Estrogen replacement can improve skin health in menopausal women but doesn't reverse sun damage or prevent hair loss.

Different types of stem cells with unique roles exist in blood, skin, and intestines, and this variety is important for tissue repair.

Stem cell therapy, particularly using certain types of cells, shows promise for treating hair loss by stimulating hair growth and development, but more extensive trials are needed to confirm these findings.

Inflammation may be linked to hair loss, and targeting specific enzymes could help treat it.

Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.

Obesity is linked to various skin problems and may increase the risk of skin cancer.

The skin's internal clock affects healing, cancer risk, aging, immunity, and hair growth, and disruptions can harm skin health.

Stress can stop hair growth in mice, and treatments can reverse this effect.

Stem cell plasticity is crucial for wound healing but can also contribute to cancer development.

TRP channels in the skin are important for sensation and health, and targeting them could help treat skin disorders.

Targeting androgen receptors could be a promising way to treat skin disorders with fewer side effects.

Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.

Terbinafine quickly builds up in skin and hair, staying effective for over 3 weeks.

The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.

Finasteride and minoxidil are effective for hair regrowth, while treatments for alopecia areata have varying success and continuous treatment is necessary.

The document concludes that while significant progress has been made in understanding skin biology and stem cells, more research is needed to fully understand their interactions with their environment.

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

Trilostane effectively and safely treats dogs with pituitary-dependent hyperadrenocorticism, improving symptoms and adrenal gland size.

Minoxidil is the only FDA-approved topical drug for treating male or female pattern hair loss, and other medications like finasteride and dutasteride can also increase hair growth.

Melatonin helps regulate hair growth and protects the hair follicle from stress.

Hair color production is closely linked to the active growth phase of hair in mice and may also influence hair growth itself.

The document concludes that hair is complex, with a detailed growth cycle, structure, and clinical importance, affecting various scientific and medical fields.

Hirsutism is more linked to high androgen levels than acne or hair loss, and a mix of hormonal tests is best for diagnosis; certain treatments can reduce symptoms.

Both genes and environmental factors like chemicals may contribute to the increase in hypospadias, but the exact causes are still unclear.

Nerves and chemicals in the body can affect hair growth and loss.

Male hormones and their receptors play a key role in hair loss and skin health, with potential new treatments being explored.