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This article reviews five cases of primary idiopathic pseudopelade of Brocq and reports no histopathological changes indicative of any specific cicatricial alopecia.

This study used a 3D live imaging system to map cell dynamics in human hair follicles, revealing patterns of cell movement and division that help explain hair fiber extrusion during hair growth.

This review highlights how intravital microscopy has advanced understanding of tissue homeostasis and cancer progression, focusing on how tumor cells exploit physiological processes for growth; it reports no new experimental findings.

This article reviews the role of epithelial-mesenchymal interactions in hair follicle morphogenesis and the hair cycle, suggesting potential paths for developing treatments for hair growth disorders but providing no new clinical findings.

This review discusses immunohistological and immunofluorescent methods for studying the human hair follicle cell cycle, reporting no new results, and suggests its potential for advancing cell cycle research.

This study introduced a theoretical model suggesting that the morphological transition from bud to cap in tooth germ development is driven by mechanical interactions among cells.

This study found that DNA flow cytometry effectively evaluates physiological and hormonal influences on cell cycle kinetics of human anagen hair bulbs, with increased S phase cells observed in male pattern baldness, hirsutism, and hyperthyroidism.

This study used infrared spectral imaging to show for the first time the distribution of glypican-4 and glypican-6 in hair follicles across different growth phases, highlighting the potential of this technique for studying alopecia.

This study found that non-balding dermal papilla cells emphasized extracellular matrix organization and reduced inflammation when cultured in 3D or with adipose-derived stem cells, unlike balding cells which maintained inflammatory pathways.

This letter highlights concerns about transient lymphadenopathy as a potential adverse effect of platelet-rich plasma combined with microneedling for alopecia, emphasizing the need to understand its underlying cause.

This study found that platelet-rich plasma may influence the proliferation of human hair dermal papilla cells by affecting gene expression related to the cell cycle.

This study observed unique ultrastructural changes in a 4-year-old girl with pili trianguli et canaliculi that may affect hair shaft surface characteristics due to inner root sheath alterations.

This article discusses features, genetics, and diagnostic challenges of central centrifugal cicatricial alopecia in African American women but reports no new clinical results.

Alopecia areata often recurs after treatment with diphenylcyclopropenone.

In this study, researchers observed that the combination of hair progenitors and their micro-niche changes every three days in mouse zigzag hair, and disruptions in specific genes affected this rhythm, highlighting the importance of this periodic change for normal hair morphology.

This study provided a dynamic 4D atlas showing the development process of mouse hair follicles through a telescope-like model, revealing new insights into the origin of hair follicle stem cells.

This study observed that primary hair follicles in Liaoning Cashmere goats had broader hair bulb widths compared to secondary follicles, with the difference diminishing during the anagen phase of hair follicle development.

This study found that interfollicular injection of autologous CD34+ cell-containing PRP preparation improved hair count and thickness in patients with pattern hair loss, with better results than placental extract treatment.

Specific immune cells and pathways contribute to hair follicle inflammation and hair loss, suggesting potential treatments for lichen planopilaris.

This study found that in individuals with alopecia areata, intralesional Triamcinolone therapy led to significantly greater reduction in disease severity, measured by SALT scores, compared to autologous platelet-rich plasma treatment over a 24-week period.

This study suggests that IL-1β produced by dermal papilla cells, regulated by protein kinase C, may inhibit human hair follicle growth through paracrine signaling.

Scientists used a special imaging technique to observe that hair follicle regeneration involves cell division and structural changes, mostly in the lower part of the follicle, and that the dermal papilla at the base is crucial for regrowth.

This study found that a newly developed hemi-vascularized sandwich method significantly improved the regeneration and maturity of hair follicles compared to other transplantation approaches in rat models.

DS cells in hair follicles can help form and restore hair, especially in hair loss conditions.

This study observed that in primary extramammary Paget disease, carcinoma commonly spreads to significant depths along hair follicles and eccrine ducts, with a maximal depth of 3.6 mm.

This study found that transplanting trichogenous dermal cells significantly enhanced the restoration of in vivo-damaged hair follicles in a nude rat model, with a combination of dermal papilla and sheath cells proving more effective than either cell type alone.

This study observed that melanogenesis in human hair follicles is linked to anagen phases, with melanocyte activity and enzyme expression being region-specific to the nascent bulb.

This study observed that three-dimensional cultures of dermal papilla cells enhanced endothelial cell migration and angiogenesis in vitro, which may improve vascularization in tissue-engineered skin constructs.

In this study, researchers used a 3D printing technique to spatially pattern human dermal papilla cell spheroids in a collagen matrix, enhancing skin and hair regeneration in a mouse model, with notable upregulation of key genes for hair follicle formation compared to traditional cell cultures.

This study found that periodic intratesticular PRP administration may slightly enhance testicular development in male lambs, indicated by increased testicular blood flow, length, and reduced resistance index compared to saline.