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Skin grafts on mice can cause an immune response leading to hair loss, useful for studying human hair loss conditions.

Human hair follicles produce and respond to erythropoietin, helping protect against stress.

Cantu syndrome, which causes excessive hair growth and skin issues, is due to a mutation in the ABCC9 gene, and understanding this could help develop new treatments for hair diseases.

Microspheres about 1.5 micrometers in size can best penetrate hair follicles, potentially reaching important stem cells.

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

Using a special laser can improve how well hair loss treatments get into the skin and hair follicles.

Aging causes changes in the scalp that can affect hair growth and lead to older-looking hair in women.

AcSDKP may help prevent skin and hair aging and promote their growth.

Male yak hair growth is influenced by DHT synthesis, which is promoted by 5α-red1 and AR during growth phases, while E2 may inhibit growth through ERα.

The research created a detailed map of skin cells, showing that certain cells in basal cell carcinoma may come from hair follicles and could help the cancer grow.

Gender affects hair and scalp characteristics, with differences in hormone responses, graying patterns, and trace metals.

Caffeine may help reduce stress-induced hair loss.

PGD2 stops hair growth and is higher in bald men with AGA.

The conclusion is that we need more effective hair loss treatments than the current ones, and these could include new drugs, gene and stem cell therapy, hormones, and scalp cooling, but they all need thorough safety testing.

A new model using mice with human hair follicles helps better understand hair loss from chemotherapy.

Human scalp hair follicles can produce hormones and have a system similar to a brain-body communication network.

Researchers successfully transplanted hair follicles in mice, which survived well and helped in wound healing.

The document provides a method to classify human hair growth stages using a model with human scalp on mice, aiming to standardize hair research.

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.

Ionizing radiation damages human hair follicles by stopping cell growth, causing cell death, disrupting color, and increasing stress and damage markers.

400 nm particles penetrate hair follicles best, but mouse models aren't fully reliable for human studies.

Injecting a mix of human skin and hair cells into mice can grow new hair.

Understanding hair biology is key to developing better treatments for hair and scalp issues.

Hair disorders are caused by a complex mix of biology, genetics, hormones, and environmental factors, affecting hair growth and leading to conditions like alopecia.

Some drugs can cause reversible hair loss, but certain chemotherapy drugs may lead to permanent hair loss; drugs can also change hair color and texture.

Oestrogens help maintain healthy skin, heal wounds, and may protect against skin aging and cancer.

Androgens play a key role in hair growth and disorders like baldness and excessive hairiness.

Pregnant women often experience skin and hair changes, with over half getting stretch marks and pigment changes, and should be cautious with cosmetic procedures due to potential risks.

Scalp cooling can help prevent chemotherapy-induced hair loss with a 50-90% success rate and is safe for patients.

Accurate clinical, histological, and genetic methods are key for understanding and treating hair disorders.