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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.

Some drugs can cause rare but potentially deadly skin reactions, and early treatment and avoiding the drug again are key.

The secretome from mesenchymal stem cells is a promising treatment that may repair tissue and avoid side effects of stem cell transplantation.

Growing human skin cells in a 3D environment can stimulate new hair growth.

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.

Two main types of fibroblasts with unique functions and additional subtypes were identified in human skin.

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

Biomaterials with MSC-derived substances could improve tissue repair and have advantages over direct cell therapy.

Stem cells help heal skin wounds by moving and changing roles, working with other cells, and needing more research on their activation and behavior.

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.

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

The PDGF/PDGFR pathway is a potential drug target with mixed success in treating various diseases, including some cancers and fibrosis.

Cancer treatments targeting specific cells and the immune system can cause skin, mouth, hair, and nail problems, affecting patients' quality of life and treatment adherence.

New effective scar treatments are urgently needed due to the current options' limited success.

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

Some medicinal plants can help heal wounds and may lead to new treatments.

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.

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

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

Tight junctions are key for skin protection and controlling what gets absorbed or passes through the skin.

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.

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