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This review discusses the relationship between gut microbiota and polycystic ovarian syndrome (PCOS), including its potential mechanisms and the role of alterations in microbiome composition on PCOS pathophysiology.

In this study, naringenin and its methylated derivatives reduced depression-like behaviors and inflammation markers in mice exposed to finasteride, suggesting their potential as effective and safe anti-depressive agents.

In this study, a botanical extract and minoxidil showed similar effects in vitro by reducing pro-inflammatory cytokines and 5α-reductase expression while increasing growth factors VEGF and KGF in human keratinocyte cells, suggesting potential for further in vivo research.

This study demonstrates that pea sprout extract promotes hair growth by activating specific signaling pathways and providing antioxidant and anti-inflammatory effects, suggesting its potential as a natural alopecia treatment.

This review examines the interconnected processes of atopic dermatitis and alopecia areata, highlighting shared immune imbalances, genetic factors, and microbiome influences, while analyzing current and emerging treatments and identifying gaps in understanding these overlapping conditions.

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.

In this laboratory study, Cucumis melo var. makuwa leaf extract significantly reduced DHT-induced apoptosis in human dermal papilla cells by modulating androgen receptor activity and gene expression, suggesting potential as a therapy for androgenetic alopecia.

This study found that specific TRPM5 modulators are unlikely to directly affect sebaceous glands, but safe TPPO analogues may provide moderate lipogenic and anti-inflammatory effects beneficial for dry skin conditions.

This study explored the anti-hair loss potential of plant extracts like licorice, salvia miltiorrhiza, and others, finding they increased ALP and β-catenin expression and reduced TGF-β1 and IL-6 in human dermal papilla cells without cytotoxicity.

This review examined and discussed the role of dermis-derived factors in the regulation of melanogenesis, noting their significance in both normal and abnormal mammalian skin conditions, suggesting an underexplored area of study compared to dermal and epidermal influences.

A specific type of immune cell plays a key role in causing alopecia areata and could be a target for treatment.

This study found that human embryonic stem cell-derived mesenchymal stem cells promote hair growth and enhance the transition from the telogen phase to the anagen phase in mice, especially under hypoxic conditions.

This study suggests that IL-1β may play a role in inflammatory signaling pathways in papulopustular rosacea, contributing to its pathogenesis.

Higher levels of IL-1a and IL-1RA were found in severe alopecia areata cases.

This study found that levels of certain signaling proteins were significantly higher in the alopecia zone compared to other areas, suggesting a role in androgenetic alopecia etiology.

This study found sebaceous gland atrophy and altered gene expression in psoriatic skin lesions, which may relate to the observed hair loss in these areas.

This study examined immune responses to Diphencyprone and found that its induced skin reactions have higher levels of negative immune regulators compared to psoriasis, suggesting differences in immune regulation may contribute to psoriasis chronicity.

This study observed that high concentrations of rosemary and thyme extract caused thymic tissue damage, decreased IgM and IgG levels, and fluctuated IL-10 levels in chick embryos, with inflammation signs present despite potential benefits.

This article discusses the role of regulatory T cells in alopecia areata, where their deficiency in hair follicles may lead to impaired local immunity and suggests potential therapies like CAR-T reg cells and low-dose IL-2 to alleviate autoimmunity and promote hair regeneration in affected individuals.

This study found that soluble CD83 (sCD83) accelerated chronic and hard-to-heal wound healing and improved inflammatory and pro-resolving cytokine profiles, suggesting potential for therapeutic use.

This narrative review highlights the shared immunopathogenesis of alopecia areata and atopic dermatitis and discusses approved and investigational therapies that target common pathways, suggesting a future for personalized treatment strategies.

This study observed that patients with alopecia areata had significantly higher serum levels of IL-15 and TNF-α compared to controls, with TNF-α levels particularly elevated in individuals with alopecia totalis, though these biomarkers were not influenced by disease duration or activity.

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.

JAK inhibitors show promise for treating alopecia areata, but more research is needed.

This study found that human fetal CD133+ progenitor cells and their conditioned medium accelerated wound healing and promoted angiogenesis in a mouse model of ischemic diabetic ulcers through paracrine mechanisms involving Wnt signaling.

Understanding and targeting specific molecules can help reduce scarring and promote scar-free healing.

In this research, authors found that skin-resident ILCs regulate sebaceous gland function and microbial balance, emphasizing an immune-epithelia system that supports host-microbe symbiosis.

Apoptosis in hair follicles varies by growth phase, with TGF-β possibly starting the catagen phase.

This meta-analysis estimated that around 80% of patients who had COVID-19 experienced at least one long-term symptom, with fatigue being the most common reported effect.

This study concluded that cytokines and growth factors significantly regulate hair growth in vitro, with some completely inhibiting growth, such as EGF and TNFα.