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Male rats have more somatostatin neurons than females due to testosterone converting to estrogen during early development.

Nanoparticles improve drug delivery through the skin but more research is needed on their long-term effects and skin penetration challenges.

Topical L-thyroxine may help with wound healing and hair growth but should be used short-term due to potential risks.

A boy's growth and immune problems were caused by a new mutation in the STAT5B gene.

Gene therapy with the Math1 gene helped regenerate balance-related cells and improve balance in mice.

Wounded skin cells can revert to stem cells and help heal.

The study suggests that motor neurons created from stem cells of patients with spinal and bulbar muscular atrophy show signs of the disease, including changes in protein levels and cell functions.

Mice lacking steroid 5α-reductase 2 show less aggression and better impulse control.

Adipose-derived stem cells show promise in treating skin conditions like vitiligo, alopecia, and nonhealing wounds.

Chickens exposed to loud noise can quickly regain hearing mostly due to repair of the tectorial membrane, not just hair cell regeneration.

Androgens are important for normal ovarian function and estrogen production, but may not be the main cause of follicle death.

SDF-1/CXCL12 and its receptor CXCR4 are crucial for melanocyte movement in mouse hair follicles.

Four specific genes are linked to keloid formation and could be potential treatment targets.

Inactive hair follicle stem cells help prevent skin cancer.

Skin problems can be caused or worsened by physical forces and pressure on the skin.

The circadian clock plays a key role in hair growth and its disruption can affect hair regeneration.

The JAK/STAT pathway is important in cell processes and disease, and JAK inhibitors are promising for treating related conditions.

Harlequin mutant mice have hair loss due to low AIF protein levels and retroviral element activity.

The vitamin D receptor is essential for skin stem cells to grow, move, and become different cell types needed for skin healing.

Telocytes in the scalp may help with skin regeneration and maintenance.

A specific enzyme is essential for proper hair follicle stem cell development and healthy skin.

Blocking JAK/STAT pathways can help treat hair loss from alopecia areata.

Researchers found that certain RNA sequences play a role in yak hair growth and these sequences are somewhat similar to those in cashmere goats.

The Wnt/β-catenin pathway helps tissue regeneration but can also cause fibrosis, and drugs that inhibit this pathway may aid in healing skin and heart tissues.

Men are more likely to have severe respiratory viral infections like COVID-19 due to hormonal and genetic differences, while women generally have stronger immune responses.

The document concludes that while significant progress has been made in understanding skin biology and stem cells, more research is needed to fully understand their interactions with their environment.

HIV-1 may cause increased stem cell death in hair follicles, leading to hair loss.

Human hair follicle stem cells help repair tendon injuries.

Maintaining healthy mitochondria may help treat hair loss.

Wnt-3a helps grow more skin stem cells, which could lead to new hair loss treatments.