January 2022 in “The Egyptian Journal of Hospital Medicine” This study found that higher serum IL-21 levels may serve as a promising diagnostic and prognostic marker for alopecia areata, strongly correlating with disease activity.
5 citations
,
June 2022 in “Frontiers in immunology” This study observed that expanding regulatory T cells in the skin of mice with alopecia areata did not reverse the condition, indicating that additional immunotherapy may be necessary.
70 citations
,
December 2004 in “Differentiation” This study identifies six novel keratin genes from the chromosome 17q21.2 region, suggesting their association with hair follicles, while all 27 keratin genes in the domain have been characterized transcriptionally.
23 citations
,
January 2016 in “Frontiers in immunology” This review discusses the potential of combining low-dose IL-2 with islet antigens to enhance antigen-specific Treg function in type 1 diabetes, but reports no new clinical results.
57 citations
,
April 2019 in “British journal of dermatology/British journal of dermatology, Supplement” This background review discusses alopecia areata, highlighting the role of CD8+NKG2D+ T cells in hair follicle pathogenesis, and notes that the exact mechanisms causing hair loss remain unclear.
September 2025 in “Diseases” This study found that patients with patchy alopecia areata had significantly higher serum levels of pro-inflammatory cytokines IL-6, TNF-α, IL-17A, and IL-21 compared to healthy controls, with these levels correlating positively with disease severity, age, and disease duration.
April 2023 in “Journal of Investigative Dermatology” This study found that mRNA booster vaccinations for SARS-CoV-2 increased protective antibodies without worsening autoimmune disease activity in patients with pemphigus and bullous pemphigoid.
123 citations
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September 1987 in “JAMA” This study observed that patients receiving IL-2 immunotherapy developed a skin eruption characterized by burning and pruritus, which resolved shortly after stopping the infusion, suggesting that IL-2 mediated these effects.
2 citations
,
August 2024 in “JID Innovations” This study suggests that keratinocytes derived from hair follicles of patients with atopic dermatitis provide a useful model for investigating AD-related inflammation, as they showed greater expression changes of AD markers when stimulated with type 2 cytokines compared to those from healthy donors.
August 2025 in “International Journal of Molecular Sciences” This study found that compounds isolated from Osmanthus fragrans var. aurantiacus demonstrated antioxidative and anti-inflammatory activities, potentially offering therapeutic benefits for inflammatory bowel diseases by inhibiting COX-2 and iNOS enzymes and blocking ERK 1/2 MAPK signaling.
March 2021 in “bioRxiv (Cold Spring Harbor Laboratory)” This study found that type 2 immunity, especially involving ILC2 cells, helps maintain skin homeostasis by regulating the proliferation and community stability of hair follicle epithelial cells in the presence of Demodex mites.
September 2024 in “Journal of the Pakistan Medical Association” In this experimental study, laser irradiation significantly altered the gene expression of cytokines in cultured human T-cell lymphocytes, suggesting that such laser light may photobiomodulate cytokine production in vitro.
7 citations
,
March 2022 in “International Journal of Molecular Sciences” This study found that FGF21 suppresses inflammation induced by C. acnes in both human skin cells and mouse models, suggesting potential use in acne treatment.
717 citations
,
June 2010 in “Nature” This study identified key genetic regions associated with alopecia areata, highlighting both acquired and innate immune involvement, with a novel link to the upregulation of ULBP ligands in autoimmune disease.
71 citations
,
May 2019 in “Rheumatology” This study observed that PD-1+CXCR5-CD4+T peripheral helper cells are significantly elevated in patients with systemic lupus erythematosus and are correlated with disease activity indicators, suggesting their potential role in lupus pathogenesis.
40 citations
,
August 2022 in “Frontiers in immunology” This review discusses the potential of JAK inhibitors as a promising treatment strategy for alopecia areata, highlighting their mechanism and recent FDA approval based on clinical trial efficacy.
37 citations
,
December 2021 in “Cells” This study found that dysregulation of systemic Th1, Th2, and Th17 cytokines is associated with alopecia areata, with specific cytokines linked to disease activity and treatment response.
2 citations
,
March 2015 in “Expert opinion on orphan drugs” This review discusses recent advances in the treatment of alopecia areata, highlighting new potential therapies like JAK inhibitors and PRP, and reports no new clinical results.
1 citations
,
April 2023 in “World Journal of Urology” In this study, researchers found that using a 5-α reductase inhibitor may reduce inflammation-related cytokines associated with T-helper cell 1 and T-helper cell 2 in prostate tissues after surgery, but it did not affect those related to Th17 cells.
1 citations
,
June 2023 in “Genes” This study highlights the genetic complexities in alopecia areata, emphasizing the role of microRNAs and their association with other immune-related diseases, which could inform targeted treatment strategies.
1 citations
,
January 2023 in “International Journal of Molecular Sciences” This review explores the role of Tregs in autoimmune skin diseases, transplantation, and skin cancer, and discusses Tregs-based therapies' potential for treating autoimmunity without reporting new experimental results.
11 citations
,
September 1999 in “Journal of the European Academy of Dermatology and Venereology” This review examines various immunomodulatory therapies for cutaneous lymphoma and notes that they are most effective in the disease's early stages.
185 citations
,
August 2020 in “Mayo Clinic Proceedings” This review discusses biological sex differences in COVID-19 outcomes and reports no new clinical results; it identifies a need for studies to clarify how sex influences disease progression.
57 citations
,
March 2021 in “International Journal of Molecular Sciences” This study found that type 2 immunity may play a role in the development of alopecia areata in patients with extrinsic atopic dermatitis, indicating different immunological states compared to non-atopic patients.
47 citations
,
October 2014 in “Expert Opinion on Emerging Drugs” This review discusses emerging treatments and mechanisms for alopecia, highlighting potential therapies like janus kinase inhibitors and advances in stem-cell technology, but reports no new experimental results.
32 citations
,
October 2023 in “Biomedicines” This study found that chronic low-grade inflammation exists independently of excess weight or obesity in women with PCOS, with notable increases in specific cytokines such as IL-9, MCP-3, and MIP-1α.
16 citations
,
July 2020 in “International Journal of Molecular Sciences” This study found that ruxolitinib modulated inflammatory changes and stimulated growth factor signals by blocking the JAK-STAT pathway in an in vitro model of alopecia areata.
12 citations
,
March 2016 in “BBA clinical” This study found that intracellular Toll-like receptors were significantly up-regulated in peripheral blood mononuclear cells of alopecia areata patients, suggesting a potential role in inflammatory signaling and pathogenesis.
11 citations
,
January 2017 in “Oxidative medicine and cellular longevity” This study found that antroquinonol inhibited CD8+ T cell proliferation and reduced proinflammatory cytokine secretion in vitro, while also ameliorating H2O2-induced depigmentation and resisting reductions in hair follicle length, skin thickness, and tyrosinase expression in mice.
10 citations
,
May 2021 in “Stem Cell Research & Therapy” In this study, subcutaneous injection of bone marrow mesenchymal stem cells in burned rats significantly improved wound healing by reducing inflammation, scar formation, and wound size, and restoring normal skin structures.