May 2025 in “Journal of the Egyptian Womenʼs Dermatologic Society” This study found that immune privilege is preserved in hair follicles of nonsegmental vitiligo patients compared to those with alopecia areata, potentially protecting follicular melanocytes from autoimmune attacks.
13 citations
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May 2005 in “Seminars in Plastic Surgery” This article discusses the cell therapy potential of follicular cell implantation for hair regeneration and reports no new clinical results, emphasizing the role of dermal papilla cells in forming new follicles.
July 2026 in “Expert Review of Clinical Immunology” This review highlights that alopecia areata is characterized by three immune endotypes, and while JAK inhibitors offer temporary control, upcoming multi-omics diagnostics and immune reprogramming strategies may achieve longer-lasting remission, according to this analysis.
37 citations
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December 2001 in “Journal of Investigative Dermatology” This study found that human follicular papilla cells in the scalp produce leptin and express functional leptin receptors, suggesting leptin's significant role in hair biology.
March 2026 in “Frontiers in Medicine” This study provides a framework for understanding different types of alopecias based on immune privilege collapse at specific follicular sites, revealing distinct patterns in immune effector programs and stromal influences depending on the alopecia type.