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Pig skin is a good substitute for human skin to measure drug absorption, but differences in skin structure and enzymes across species must be considered.

Keratinocytes help heal skin wounds by interacting with immune cells and producing substances that kill pathogens.

Cathepsin L is essential for normal hair growth and development.

The Sonic hedgehog pathway is crucial for new hair growth during mouse skin healing.

Skin aging is due to impaired stem cell mobilization or fewer responsive stem cells.

Some viruses can cause cancer by changing cell processes and avoiding the immune system; vaccines and targeted treatments help reduce these cancers.

Taxane chemotherapy can cause skin, hair, and nail side effects, which are often under-reported and can affect patient quality of life.

Hair follicles may soon be used more for targeted and systemic drug delivery.

RNAi-based biopesticides could be safe and effective for pest control with careful development and risk assessment.

Microneedles improve drug delivery in various body parts, are safe and painless, and show promise in cosmetology, vaccination, insulin delivery, and other medical applications.

The niche environment controls stem cell behavior and plasticity, which is important for tissue health and repair.

EGFR inhibitors often cause skin problems and other side effects, but these are usually reversible and can be managed to keep patients comfortable.

Matriptase is crucial for keeping epithelial tissues healthy and functioning properly.

Estrogen loss during menopause worsens skin health, but hormone replacement therapy may improve it, though more research is needed.

The document recommends using both clinical evaluation and various measurement methods to assess skin greasiness, considering factors like temperature and hormones.

Stem cell therapy, particularly using certain types of cells, shows promise for treating hair loss by stimulating hair growth and development, but more extensive trials are needed to confirm these findings.

Stem cells in the hair follicle are regulated by their surrounding environment, which is important for hair growth.

Antibiotics can reduce acne but may lead to resistant bacteria, and understanding the skin's bacteria is important for treatment.

Some vitamins and minerals like vitamin D and iron can help with certain types of hair loss, but more research is needed for others.

Adam10 enzyme is crucial for healthy skin and proper Notch signaling.

Low fluence photoepilation temporarily removes hair by targeting the hair follicle's pigmented area without severe damage.

Different types of stem cells and their environments are key to skin repair and maintenance.

TGF-β signaling is crucial for stem cell maintenance, differentiation, and has implications for cancer treatment.

In Italian patients with lupus, the most common skin issue was chronic cutaneous lupus, especially discoid lesions, and nonspecific skin problems occurred in about a third of those with systemic lupus, mainly during active disease.

Microneedles help improve skin appearance and deliver skin treatments effectively, but safety concerns need more research and regulation.

The document concludes that specific cells are essential for hair growth and more research is needed to understand how to maintain their hair-inducing properties.

Inflammation may be linked to hair loss, and targeting specific enzymes could help treat it.

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

The conclusion is that Treg-targeted therapies have potential, but more knowledge of Treg biology is needed for effective treatments, including for cancer.

Mouse hair follicle cells briefly grow during the early hair growth phase, showing that these cells are important for starting the hair cycle.