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Wnt signaling controls whether hair follicle stem cells stay inactive or regenerate hair.

Hair follicle stem cells are key for hair and skin regeneration, can be reprogrammed, and have potential therapeutic uses, but also carry a risk of cancer.

Cancer cells often have more copies of TERT and TERC genes, which helps them grow and could affect patient outcomes.

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

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

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.

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.

Oxidative stress contributes to hair graying and loss as we age.

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

MicroRNA-302 helps improve the conversion of body cells into stem cells by blocking NR2F2.

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

The update highlights that non-classic congenital adrenal hyperplasia is common in women with excess male hormones, requires specific hormone tests for diagnosis, and has various treatment options depending on age and symptoms.

PDGFA/AKT signaling is important for the growth and maintenance of certain skin fat cells.

Correct skin biopsy techniques are crucial to avoid misdiagnosis of skin diseases.

Skin-derived precursors in hair follicles come from different origins but function similarly.

Formyl-peptide receptor agonists could be new anti-inflammatory drugs.

Hair ages due to genetics and environmental factors, leading to graying and thinning, with treatments available for some conditions.

Hair elemental analysis could be useful for health and exposure assessment but requires more standardization and research.

Trichoscopy is a useful, non-invasive way to diagnose different types of hair loss.

The p75 neurotrophin receptor is important for hair follicle regression by controlling cell death.

Alopecia areata is likely caused by a combination of genetic factors and immune system dysfunction, and may represent different diseases with various causes.

The document concludes that specific itchy skin diseases during pregnancy have varying fetal risks and treatments, including corticosteroids and other medications.

Hidradenitis suppurativa is caused by genetic factors, inflammation, bacteria, hormones, and lifestyle factors like obesity and smoking.

Stress hormone corticosterone blocks a growth factor to slow down hair stem cell activity and hair growth.

The conclusion is that certain scalp tissue changes are characteristic of lichen planopilaris, with mucinous perifollicular fibroplasia being a new feature for diagnosis.

The document says to treat cat fungal infections with medicine and clean the environment, noting that cats without symptoms can still spread it to humans.

Exosomes from dermal papilla cells help hair growth by making hair follicle stem cells multiply and change.

The study identified and characterized new keratin genes linked to hair follicles and epithelial tissues.

Nanocapsules can improve clobetasol delivery to hair follicles, reducing side effects.