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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.

In 2011, hair restoration was a specialized field in plastic surgery, using techniques like "Ultrarefined follicular unit hair transplantation" to minimize scarring and promote hair growth, with future treatments like stem cell therapy and hair cloning still being tested.

Foxn1 is important for fat development, metabolism, and wound healing in skin.

Vitamin D receptor is crucial for skin wound healing.

The Multi-Organ-Chip improves the growth and quality of skin and hair in the lab, potentially replacing animal testing.

The research found ways to activate melanocyte stem cells for potential treatment of skin depigmentation conditions.

Dermal papilla cells help wounds heal better and can potentially grow new hair.

Heparin and protamine are promising in tissue repair and organ regeneration, including skin and hair.

Placental mesenchymal stem cells and their conditioned medium significantly improve healing in local radiation injuries.

Certain cells in the adult mouse ear come from cranial neural crest cells, but muscle and hair cells do not.

Modified stem cells from umbilical cord blood can make hair grow faster.

Canine epidermal neural crest stem cells could be a promising treatment for spinal cord injuries in dogs.

Implanted special stem cells from hair follicles helped heal wounds faster and with less scarring in mice.

TLR3 signaling enhances the immunosuppressive properties of human periodontal ligament stem cells.

New biofabrication technologies could lead to treatments for hair loss.

The scalp fat tissue of men with hair loss shows changes in gene activity that may contribute to their condition.

Mice lacking the PPARγ gene in their fat cells had almost no fat tissue, severe metabolic problems, and abnormal development of other fat-related tissues.

Hair growth environment recreated with challenges; stem cells make successful skin organoids.

Aging reduces skin stem cell function, leading to changes like hair loss and slower wound healing.

Some treatments like topical oxygen and stem cells show promise for wound healing and hair growth, but evidence for modern dressings over traditional ones is limited.

A specific RNA molecule, circCOL1A1, affects the growth and quality of goat hair by interacting with miR-149-5p and influencing cell growth pathways.

Some brain cancer cells avoid immune system detection, and certain treatments could target this to slow their growth; also, certain fat cell precursors help regenerate hair and skin after injury.

New antiscarring strategies show promise, including drugs, stem cells, and improved surgical techniques.

RADA16 is a promising material for tissue repair and regenerative medicine but needs improvement in strength and cost.

The 3D scaffold helped maintain hair cell traits and could improve hair loss treatments.

Muse cells keep their special features and can become different cell types even after being frozen and thawed three times.

Piperine from black pepper can make hair less oily by blocking fat cell development in hair roots.

Aging skin is affected by inflammation, reduced stem cell function, and slower wound healing.

Keratin hydrogels from human hair show promise for tissue engineering and regenerative medicine.

PDRN helps repair tissue and improve wound healing with a high safety profile.