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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.

SOX2 is crucial for skin cell function and hair growth, and it plays a role in skin cancer and wound healing.

Alexander the Great's engineers built a causeway using a natural sand bridge, some tiger moths avoid bats by mimicking toxic relatives' sounds, early metabolism and RNA enzymes support the ancient RNA world theory, and vitamin D is crucial for hair growth and its absence can cause baldness.

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

ODC overexpression in hair cells increases tumor growth by reducing Notch signaling.

Basal cell carcinomas may differentiate similarly to hair follicles and could be influenced by hair cycle-related treatments.

Vitamin D has potential benefits for cancer prevention, heart health, diabetes, obesity, muscle function, skin health, and immune function, but clinical results are mixed and more research is needed.

Keratin 15 expression in skin cells is regulated by two mechanisms involving PKC/AP-1 and FOXM1.

Using polyethylenimine-DNA to deliver the hTERT gene can stimulate hair growth and may be useful in treating hair loss, but there could be potential cancer risks.

Plant extracts may help prevent or reverse hair graying.

New regenerative medicine-based therapies for hair loss look promising but need more clinical validation.

Nanocarriers with plant extracts show promise for safe and effective hair growth treatment.

Scientists have improved 3D models of human skin for research and medical uses, but still face challenges in perfectly replicating real skin.

The protein CTCF is essential for skin development, maintaining hair follicles, and preventing inflammation.

Estrogen can temporarily slow down hair growth but this can be reversed.

Epidermal keratinocytes start wound healing and inflammation after schistosome infection.

Intu gene is crucial for hair follicle formation by helping keratinocytes differentiate through primary cilia.

Skin aging is a complex process influenced by various factors, leading to wrinkles and sagging, and should be considered a disease due to its health impacts.

The new matrix improves skin regeneration and graft performance.

Creating fully functional artificial skin for chronic wounds is still very challenging.

Single Blimp1+ cells can create functional sebaceous gland organoids in the lab.

HHORSC exosomes and PL improve hair growth treatment outcomes.

A peptide called DPS-1 helps human scalp cells grow and stimulates hair growth in mice.

The circadian clock is crucial for tissue renewal and regeneration, affecting stem cell functions and having implications for health and disease.

Dermal Papilla cells are a promising tool for evaluating hair growth treatments.

TAF4 is important for skin cell growth and helps prevent skin cancer in mice.

Human dermal fibroblasts help microvascular endothelial cells grow, but not vice versa.

More dermal papilla cells in hair follicles lead to larger, healthier hair, while fewer cells cause hair thinning and loss.

Testosterone affects androgen receptors and lipid storage in cells, while DHEA does not convert to testosterone or affect these receptors in the same way.

Immune cells affect hair growth and could lead to new hair loss treatments.