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This report details a case study where a 40-year-old woman experienced allergic contact dermatitis and angioedema-like symptoms after using PPD-containing hair dye. Patch testing confirmed a positive reaction to PPD, highlighting the substance's potential to cause both T-cell and IgE-mediated hypersensitivity reactions.

This review discusses the clinical and trichoscopic features of lichen planopilaris and notes its potential underdiagnosis prior to hair transplant, but it reports no new findings.

This review discusses the potential of polydeoxyribonucleotide (PDRN) for various dermatological treatments and highlights its significant effects on wound healing, anti-aging, acne scars, and hair loss, but emphasizes the need for further clinical studies.

This study suggests that activating the PPARs/SHH-mitochondrial axis may enhance diabetic wound healing by improving endothelial cell metabolism and angiogenesis, indicating potential for PPAR agonists in treating diabetic foot ulcers.

This study found that PRP injections are safe and may slightly reduce penile curvature and improve PDQ scores in men with stable-phase Peyronie's Disease, but the changes are not significant enough to predict long-term effects.

This study found that platelet-rich plasma may be more effective and satisfactory than topical clobetasol for treating lichen planopilaris over six months.

This study found that DPP4 is significantly involved in matrix deposition and fibrosis in human skin fibroblasts, although the exact functions of DPP4 remain unclear.

This review discusses the mechanisms of platinum-induced peripheral neuropathy related to reactive oxygen species and explores potential antioxidant therapies and nanotechnology approaches, but reports no new clinical results.

Microneedling improves the appearance and feel of post-burn scars.

This study evaluated the effect of intralesional injections of lyophilized Platelet Derived Growth Factors in 42 patients with Peyronie's disease and found significant reductions in penile curvature and plaque size, along with improvements in Peyronie's Disease Questionnaire scores, suggesting a potential treatment role.

In this study, PDO, PLLA, and PCL thread implants in ageing rat skin did not alter MMP1 gene expression but maintained collagen levels similar to young skin without UV-B exposure, suggesting possible benefits for skin collagen but not gene expression modification.

This review examines experimental and clinical evidence on PDRN, a drug derived from salmon DNA that acts via the adenosine A2A receptor and shows promise for tissue repair and treatment of diabetic foot ulcers in regenerative medicine.

This research outlines the characteristics and potential applications of a GMP-compliant sodium polyphosphate formulation (Na-polyP-GMP) in cellular energy storage and ATP-dependent processes like skin regeneration and wound healing.

This review discusses current treatments for cicatricial alopecia focused on reducing inflammation to prevent further hair loss and suggests auxiliary therapies to improve the appearance of remaining hair, without reporting new clinical results.

This study explored the effects of DPP, a 15-PGDH inhibitor, on human follicle dermal papilla cells damaged by dihydrotestosterone and observed that DPP enhanced wound healing, reduced reactive oxygen species, and increased hair growth in ex vivo human hair follicle cultures.

This study suggests that the dipeptide Pro-Ile has FGF18-like activity, can penetrate model human epidermis, and may have potential as a cosmetic ingredient for skin and hair regulation.

In this pilot study, PDLLA scalp microinjections showed improvement in physician-rated Global Aesthetic Improvement Scale scores over 12-24 weeks for 90% of patients with non-scarring alopecia, with no serious adverse events reported, although findings remain preliminary due to methodological limitations.

This study found that injecting PRP gel derived from a patient's own blood may promote tissue regeneration and closure of intestinal fistulas unresponsive to conservative therapy.

In a mouse model study, researchers observed that the absence of MCPIP1 in myeloid cells decreased susceptibility to chemically induced skin papillomas but caused significant hair loss and skin pigmentation changes, suggesting a role for MCPIP1 in skin carcinogenesis and follicle integrity.

This study reports that a patient with rare linear lichen planopilaris experienced complete hair regrowth after 12 weeks of treatment with the antibody ixekizumab, suggesting it as a potential targeted therapy.

In this animal study, the researchers found that DPP4 plays a crucial role in scar formation and wound-induced hair follicle neogenesis in mice, impacting regenerative repair.

Platelet-rich plasma shows promise in reducing pain for bladder pain syndrome.

This study compared porcine-derived placental biomaterials with human-derived counterparts in a rat model of skin injuries and found no significant statistical differences in healing outcomes; however, porcine-derived materials showed reduced early inflammation and faster crust formation, suggesting potential advantages in healing effectiveness.

This study found that inhibiting DPP4 during a critical period post-wounding increases hair follicle regeneration and Wnt signaling in large skin wounds.

This article reviews lichen planopilaris, its presentation, and treatment challenges, and emphasizes the need for more research into its pathogenesis and therapy efficacy; it reports no new findings.

This study reports that PDRN, commonly used for wound healing, may also have anti-melanogenesis and potential skin whitening effects in both experimental models and clinical settings.

This case report challenges the traditional view by documenting reversible vision loss following scalp injections of platelet-rich plasma, attributed to an inflammatory or microvascular event, treatable with corticosteroids.

This narrative review examines the technological advancements and clinical applications of liquid injectable platelet-rich fibrin (i-PRF), discussing its use across regenerative periodontology, sports medicine, and more, as well as its potential as a drug delivery system.

In this study, PRP injections into the muscular layer of rabbits' intestinal walls improved anastomosis regeneration with less adhesion compared to PRP soaking, though further research is needed to determine the best application method.