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Alopecia areata is likely an autoimmune disease with unclear triggers, involving various immune cells and molecules, and currently has no cure.

Using CDK inhibitors on rats showed a reduction in chemotherapy-caused hair loss, but later experiments could not repeat these results.

Liposomes improve drug delivery and reduce skin irritation in dermatology.

The conclusion is that PCOS is caused by ovarian sensitivity to hormones and disrupted hormone control, possibly due to ovarian factors, and more research is needed.

Nanoparticles can improve skin drug delivery but have challenges like toxicity and stability that need more research.

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.

Platelet-rich plasma might help with hair growth and skin conditions, but more research is needed to prove its effectiveness and safety.

Cyproterone acetate-estrogen most effective for hirsutism, but consider side effects and patient needs.

Liposomes could improve how skin care products work but are costly and not very stable.

Flutamide may slightly improve hair loss in women, but finasteride does not work.

PRP injections improve hair thickness for baldness.

Prolactin affects hair growth and skin conditions, and could be a target for new skin disease treatments.

Spironolactone most effective for hirsutism, but has side effects.

Ozone reacts more with unwashed hair, producing compounds due to scalp oils, which could lower ozone exposure but increase exposure to reaction products.

Turing patterns are now recognized as important in developmental biology.

Polygonum multiflorum extract helps grow hair by activating certain hair growth signals in mice.

Mouflon rams mature gradually with changes in body, horns, and hormones linked to age and seasons, reaching full sexual maturity well after puberty.

The document concludes that understanding the genes and pathways involved in hair growth is crucial for developing treatments for hair diseases.

BMP2 and BMP7 have opposite roles in feather formation.

Platelet-rich plasma might help tissue regeneration in dentistry, but results vary and more research is needed.

Drugs penetrate scalp skin better than abdominal skin, with scalp hair follicles aiding in higher drug delivery.

Effective hair loss treatment in women requires correct diagnosis and can include medications like minoxidil, antiandrogens, and treatments for underlying conditions like PCOS.

Platelet-rich plasma may have some benefits in dermatology, but there's not enough evidence to widely recommend its use.

Procyanidin compounds from grape seeds were found to significantly increase mouse hair growth.

Environmental factors, hormones, nutrition, and stress all significantly affect skin health and aging.

Finasteride is a safe, effective treatment for hirsutism with fewer side effects.

Finasteride, CPA, and flutamide are all equally effective in reducing excessive hair growth in women.

Finasteride effectively reduces hair growth in women with idiopathic hirsutism, but requires careful contraception during treatment.

Minoxidil works better than nitroglycerin for treating impotence with fewer side effects.

Niosomes are promising for skin drug delivery, offering benefits like improved drug penetration and stability.