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Alopecia areata is an autoimmune disease causing patchy hair loss, often with other autoimmune disorders, but its exact causes are unknown.

Cathepsin L is essential for normal hair growth and development.

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

Skin aging is due to impaired stem cell mobilization or fewer responsive stem cells.

Androgens, like testosterone, are crucial for early testicular descent in rats.

Taxane chemotherapy can cause skin, hair, and nail side effects, which are often under-reported and can affect patient quality of life.

Sonic hedgehog signaling is crucial for hair growth and maintaining hair follicle identity.

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

Exosomes could potentially enhance tissue repair and regeneration with lower rejection risk and easier production than live cell therapies.

TGF-β signaling is crucial for stem cell maintenance, differentiation, and has implications for cancer treatment.

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

Janus kinase inhibitors are promising treatments for autoimmune skin diseases like eczema and psoriasis.

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

Different PIN proteins affect plant root hair growth by changing how auxin is transported.

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.

MIM is crucial for hair follicle formation and regeneration by controlling cilia formation and hedgehog signaling through its interaction with Cortactin and Src.

Hair grows faster in the morning and is more vulnerable to damage from radiation due to the internal clock in hair follicle cells.

People with PCOS, especially if obese, often have NAFLD, linked to obesity, insulin resistance, and high androgen levels.

Wnt and Notch signaling help wound healing by promoting cell growth and regulating cell differentiation.

Blocking the Wnt pathway could lead to new treatments for cancer and tissue repair but requires careful development to avoid side effects.

Folliculitis decalvans is a rare scalp condition causing scarring hair loss, treated with long-term antibiotics and other medications, but it often comes back and is hard to manage.

Hair, teeth, and mammary glands develop similarly at first but use different genes later.

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

The document concludes that understanding the sebaceous gland's development and function is key to addressing related skin diseases and aging effects.

Treating sleep apnea in young obese women with PCOS can improve heart health and insulin sensitivity.

Laminin-511 is crucial for early hair growth and maintaining important hair development signals.

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

No treatment fully prevents hair loss from chemotherapy yet.

A WNT10A gene mutation leads to ectodermal dysplasia by disrupting cell growth and differentiation.

The document concludes that adult mammalian skin contains multiple stem cell populations with specific markers, important for understanding skin regeneration and related conditions.