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This study found that local injections of interleukin-4 and neutralizing anti-interferon-γ antibody effectively treated alopecia in a mouse model, suggesting potential therapeutic pathways for human alopecia areata.

In this study, iNKT10 cells were found to play a significant role in preventing and treating alopecia areata in a humanized mouse model, suggesting these cells could have potential in managing related autoimmune disorders.

In this study using a mouse model and human data, researchers found that CD8+ T cells are central to driving alopecia areata, while regulatory T cells offer some protection, highlighting CD8+ T cells as key targets for future therapy development.

This study found that Th17 lymphocytes may play a more crucial role than cytotoxic T cells in the development of alopecia areata due to their infiltration around the hair bulb/bulge, which exacerbates hair loss as histopathological grade worsens.

This study found that patients with RASopathies have lower serum IgA and CD8 levels compared to controls, indicating a potential risk for developing autoimmune disorders.

This study observed that NSG-hu-BLT mice developed graft-versus-host disease characterized by CD8+ T lymphocyte-related cell death in the skin and liver, which may affect their utility in other research areas.

This study explored peripheral blood immune dysregulation in alopecia areata through single-cell analyses, identifying systemic changes linked to disease severity and key signaling roles for monocytes, NK cells, and memory T cells, suggesting potential therapeutic targets.

In this case study, the progression of alopecia universalis in a Japanese man was linked to the involvement of Th1 and Th17 cells, suggesting an autoimmune mechanism.

In this study, the elimination of NG2+ hair follicle stem cells during the anagen phase was associated with an aggravated sensitization phase of allergic contact dermatitis, suggesting their immunosuppressive role.

This research developed a mouse model for alopecia areata by transferring lymph node cells from affected mice and reported that treatments with Ritlecitinib or Tacrolimus significantly improved symptoms, with Tacrolimus achieving near-complete hair regrowth.

Alopecia areata involves complex immune cell interactions, especially between CD8+ T cells and macrophages, which could help develop new treatments.

This study revealed distinct cellular and transcriptomic differences among various subtypes of cutaneous T-cell lymphoma, particularly highlighting characteristics unique to folliculotropic mycosis fungoides.

This study demonstrated that transcutaneous vaccination via cyanoacrylate skin surface stripping effectively induced both CD4 and CD8 T cell responses in humans, offering a promising alternative to intramuscular injection.

This study observed that in human scalp hair follicles, BTNL2 expression is lower in stressed conditions, which correlates with increased cytotoxic activity by gamma/delta and CD8+ T cells, suggesting a possible role for BTNL2 in controlling immune responses relevant to alopecia areata.

Immune system changes may contribute to female pattern hair loss.

This study found that patients with alopecia areata, particularly those with severe cases, exhibit significant systemic immune dysregulation, including altered cell communication networks and epigenetic remodeling in immune cells, suggesting potential pathways for therapeutic targeting.

This study found that injecting mouse hair follicle-derived mesenchymal stem cells (moMSCORS) into C57BL/6 mice reduced the incidence and severity of type 1 diabetes by modulating immune responses, suggesting potential for therapeutic use due to their immunosuppressive effects.

The researchers in this study identified molecular mechanisms involved in frontal fibrosis alopecia, highlighting immune response and fatty acid metabolism, and developed a four-gene diagnostic model showing high accuracy in distinguishing affected individuals from controls.

This study demonstrated that disrupting EGFR signaling in mice leads to immune sensitivity compromising the hair follicle's protective environment, but JAK1/2 inhibition can restore this immune privilege and stimulate hair growth, suggesting a potential therapy for scarring hair loss diseases like cicatricial alopecia.

This study analyzed blood samples from individuals with alopecia areata and found that NKG2D+ immune cells, particularly memory-like NK cells, may better correlate with disease activity compared to CD8+ cells, though significant variability among individuals complicates these findings.

This study suggests that allergens like linalool found in personal care products may contribute to the pathobiology of frontal fibrosing alopecia by affecting immune responses and stem cell function in hair follicles.

This study found that ILC1-like cells can induce alopecia areata in healthy human hair follicles, challenging the traditional belief that the disease is primarily driven by CD8+ T cells.

Linalool in personal care products may worsen frontal fibrosing alopecia by damaging hair follicle stem cells and triggering harmful immune responses.

This study found that the loss of papillary fibroblasts in the skin due to UV radiation is mainly caused by an uncontrolled inflammatory response, with T cells helping fibroblast survival.

This study found that chronic UVR exposure in mice and humans leads to a permanent loss of papillary fibroblasts in the upper dermis, which is associated with changes in the extracellular matrix.

This study found that patients with RASopathies demonstrated lower levels of serum IgA and CD8 T cells compared to controls, potentially indicating an increased risk of developing autoimmune disorders.

This study suggests that in alopecia areata, innate lymphoid cells type 1 may contribute to the disease’s pathogenesis by inducing hair follicle changes similarly to CD8+ T cells.

Targeting immune pathways like JAK/STAT may help treat frontal fibrosing alopecia.

In this study, researchers observed that follicular damage and stem cell loss in frontal fibrosing alopecia may be mediated by immune attacks at the bulge region, suggesting potential for JAK/STAT-targeting treatments to prevent progression.

This study found that UV radiation-induced fibroblast depletion in the skin is primarily due to a deregulated inflammatory response, with T cells aiding fibroblast survival under stress.