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

Young adults have about 230,000 tactile nerve fibers, decreasing 5-8% per decade with age.

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

Pregnancy can cause skin darkening, varicose veins, more sweating, hair growth, hair loss after birth, nail changes, and gum inflammation.

Keratose, derived from human hair, is a non-toxic biomaterial good for tissue regeneration and integrates well with body tissues.

Liposomes improve drug delivery and reduce skin irritation in dermatology.

Male hormones affect COVID-19 severity and certain drugs targeting these hormones could help reduce the risk.

Understanding hair follicle anatomy helps diagnose hair disorders.

Periodontal ligament stem cells show promise for regrowing tissues but require more research for safe, effective use.

The HR protein helps hair grow by blocking a hair growth inhibitor, aiding in hair follicle regeneration.

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

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

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.

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.

Macrophages help heal nerves by aiding the maturation of Schwann cells and are important for nerve repair.

Silver nanoparticles coated with substances like PEG showed strong antibacterial effects and improved wound healing when used in hydrogels.

Human hair follicle organ culture is a useful model for hair research with potential for studying hair biology and testing treatments.

Estrogen Receptor ß (ERß) is the main hormone controller in human skin and hair follicles, not Estrogen Receptor α (ERα) or the Androgen Receptor (AR).

Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.

Prolactin contributes to hair loss by promoting hair follicle shrinkage and cell death.

The skin's internal clock affects healing, cancer risk, aging, immunity, and hair growth, and disruptions can harm skin health.

Low doses of some substances can be beneficial, while high doses can be harmful or toxic.

Substances from Chinese medicines show promise for immune support and disease prevention, but the way they are processed affects their effectiveness.

Stress can cause hair loss by negatively affecting hair follicles and this effect might be reversed with specific treatments.

Fat cells in the skin help start healing and form important repair cells after injury.

Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.

Eclipta alba extract may help hair grow similarly to Minoxidil.

Cytokeratin 19 and cytokeratin 15 are key markers for monitoring the quality and self-renewing potential of engineered skin.