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Lichen Planus is a less common condition affecting skin and mucous membranes, with various types and associated risk factors, challenging to diagnose, significantly impacts life quality, and may have a risk of cancerous changes in oral lesions.

The document concludes that mouse models are helpful but have limitations for skin wound healing research, and suggests using larger animals and genetically modified mice for better human application.

Stem cell offspring help control their parent stem cells, affecting tissue health, healing, and cancer.

TGF-β is crucial for tissue repair and can cause diseases if not properly regulated.

Tofacitinib is safe and effective for severe alopecia areata, but hair loss may return 2 months after stopping treatment.

Stem cell niches are crucial for regulating stem cell renewal and differentiation, and understanding them can help in developing regenerative therapies.

Ruxolitinib effectively regrows hair in most patients with severe hair loss.

Hair follicle development and microbes help regulatory T cells gather in newborn skin.

Alopecia areata is likely an autoimmune disease with unclear triggers, involving various immune cells and molecules, and currently has no cure.

Hair follicle stem cells use specific chromatin changes to control their growth and differentiation.

Regulatory T-cells are important for healing and regenerating tissues in various organs by controlling immune responses and aiding stem cells.

Men are more likely to have severe COVID-19 cases and fatalities than women due to factors like lifestyle, aging, and biological differences.

A patient with Alopecia Areata had complete hair regrowth after using the drug baricitinib.

Alopecia areata involves immune activation in the scalp, suggesting treatments targeting TH1, TH2, and IL-23 pathways.

Stem cell niches support, regulate, and coordinate stem cell functions.

Early development of hair, teeth, and glands involves specific signaling pathways and cellular interactions.

TGF-β is crucial for controlling stem cell behavior and changes in its signaling can lead to diseases like cancer.

The document concludes that more research is needed to better understand and treat primary cicatricial alopecias, and suggests a possible reclassification based on molecular pathways.

Alopecia areata is an autoimmune disease causing patchy hair loss, often with other autoimmune disorders, but its exact causes are unknown.

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

Targeting the IL-23/IL-17 pathway effectively treats several inflammatory skin diseases.

The WNT signaling pathway is important in many diseases and targeting it could offer new treatments.

Aging causes skin stem cells to work less effectively.

Different types of stem cells with unique roles exist in blood, skin, and intestines, and this variety is important for tissue repair.

Fat-derived stem cells show promise for skin repair and reducing aging signs but need more research for consistent results.

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

Men generally have more severe COVID-19 cases and higher death rates than women due to biological differences.

Cepharanthine is a well-tolerated drug with multiple medical uses, including anti-inflammatory and anti-cancer properties.

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

Janus kinase inhibitors are promising treatments for autoimmune skin diseases like eczema and psoriasis.