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Hair loss in Androgenetic alopecia (AGA) is due to altered cell sensitivity to hormones, not increased hormone levels. Hair growth periods shorten over time, causing hair to become thinner and shorter. This is linked to miscommunication between cell pathways in hair follicles. There's also a change in gene expression related to blood vessels and cell growth in balding hair follicles. The exact molecular causes of AGA are still unclear.

Hair loss and aging are caused by the breakdown of a key protein in hair stem cells.

Healthy mitochondria in skin cells are essential for proper hair growth and skin cell interaction in mice.

Chemotherapy causes hair loss by damaging hair follicles and stem cells, with more research needed for prevention and treatment.

MicroRNA-148a is crucial for maintaining healthy skin and hair growth by affecting stem cell functions.

Feather growth and regeneration involve complex patterns, stem cells, and evolutionary insights.

Adult mouse skin contains stem cells that can create new hair, skin, and oil glands.

The Hairless gene is crucial for healthy skin and hair growth.

MicroRNA-214 is important for skin and hair growth because it affects the Wnt pathway.

Hairless protein is crucial for healthy skin and hair, and its malfunction can cause hair loss.

The we/we wal/wal mice have defects in hair growth and skin layer formation, causing hair loss, useful for understanding alopecia.

Hair follicle stem cells are crucial for touch sensation and proper nerve structure in mice.

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

Traction may not be the only cause of cicatricial marginal alopecia.

Advancements in hair biology include new treatments and tools for hair growth and alopecia.

The document concludes that while lab results for hair growth promotion are promising, human trials are needed and better testing methods should be developed.

New treatments for hair growth disorders are needed due to limited current options and complex hair follicle biology.

Researchers found that certain RNA sequences play a role in yak hair growth and these sequences are somewhat similar to those in cashmere goats.

Ruxolitinib helps protect skin stem cells and keeps skin healthy in mice with skin GVHD.

Skin stem cells in hair follicles are important for touch sensation.

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

Lack of Crif1 in hair follicle stem cells slows down hair growth in mice.

Mice with human fetal thymic tissue and stem cells developed symptoms similar to chronic graft-versus-host disease.

Skin fat has important roles in hair growth, skin repair, immune defense, and aging, and could be targeted for skin and hair treatments.

Researchers made stem cells from human hair follicle cells with better efficiency than from skin cells.

Activating TLR9 helps heal wounds and regrow hair by using specific immune cells.

Matriptase is highly active in hair follicles and sebaceous glands, especially during hair growth phases.

Fat cells in the skin help start healing and form important repair cells after injury.

Fingerprints form uniquely before birth due to specific genetic pathways and local signals.

Melanocyte stem cells in hair follicles are key for hair color and could help treat greying and pigment disorders.