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All-trans retinoic acid causes hair loss by increasing TGF-β2 in hair follicle cells.

Prolactin affects hair growth cycles and can cause early hair follicle regression.

Versican, a protein, is less present in thinning hair follicles and this decrease might contribute to common hair loss in men.

Exosomes from dermal papilla cells can help grow hair and might treat hair loss.

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

New methods have greatly improved our understanding of stem cell behavior and roles in the body.

Researchers created a fully functional, bioengineered skin system with hair from stem cells that successfully integrated when transplanted into mice.

Fat cells are important for healthy skin, hair growth, and healing, and changes in these cells can affect skin conditions and aging.

Hormonal treatments can help with acne but are not the first choice due to side effects and the need for careful patient selection.

Women with PCOS often have skin problems like excessive hair, acne, hair loss, and dark patches, which can be treated with hormonal and non-hormonal therapies.

Hair grays due to oxidative stress and fewer functioning melanocytes.

Nonionic liposomes are the best for delivering genes to skin cells.

Stress can worsen skin conditions by affecting hormone levels and immune response.

Overexpressing the mineralocorticoid receptor in mouse skin causes skin thinning, early skin barrier development, eye issues, and hair loss.

Platelet-Rich Plasma (PRP) increases the number of new hair follicles and speeds up hair formation.

Epidermal stem cells could lead to new treatments for skin and hair disorders.

Most hair follicle stem cells do not protect their DNA by dividing it unevenly.

PRP treatment may stimulate hair growth by promoting blood vessel formation, increasing growth factors, and preventing cell death.

PPAR agonists show promise for skin conditions but need more research before being a main treatment.

Certain signals and genes play a key role in hair growth and regeneration, and understanding these could lead to new treatments for skin regeneration.

Mice without Vitamin D receptors have hair growth problems because of issues in the hedgehog signaling pathway.

Oral retinoids are effective for severe skin conditions but require careful use due to side effects.

Hair follicle stem cells could help repair nerves and avoid ethical issues linked to embryonic stem cells.

The document concludes that more research is needed to understand excessive hair growth in women with normal hormone levels and regular ovulation.

Mice lacking Insig proteins had hair growth problems due to cholesterol buildup, but this was fixed by the drug simvastatin.

New understanding of the causes of primary cicatricial alopecia has led to better diagnosis and potential new treatments.

Accurate diagnosis is key for treating different kinds of hair loss, and immune response variations may affect the condition and treatment results.

Genetic mutations can cause hair growth disorders by affecting key genes and signaling pathways.

Blocking a specific protein signal can make hair grow on mouse nipples.

Changing Wnt signaling can lead to more or less hair growth and might help treat hair loss and skin conditions.