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In this study, co-grafting human keratinocytes with murine dermal papilla-enriched cells produced hair follicle-like structures, but without regular hair formation, suggesting anomalous folliculogenesis.

This study found that human hair follicles express erythropoietin and its receptor, suggesting these follicles may use erythropoietin signaling to modulate apoptosis under stress conditions like hypoxia and chemotherapy.

Stress can cause hair loss and skin issues by affecting hair growth cycles.

This study found that Hoxc13-/- rabbits exhibit complete hair loss on the head and dorsum, providing a potential model for understanding human ECTD-9 and related dermatological conditions.

This review summarizes recent progress in human hair follicle bulge cell research, particularly the characterization and isolation of these stem cells, but reports no new experimental results.

This study found that a serum-free culture system supported hair growth from follicles responsive to calcium, glucose, and amino acids, with insulin enhancing the growth, while other factors had no effect.

This study found that mitochondrial dysfunction due to Crif1 deficiency in hair follicle stem cells significantly slows the hair growth cycle in adult mice but does not impact the maintenance of HFSC populations.

This review discusses the enhancement of drug penetration through hair follicles and reports no new clinical results while noting the potential for future research on controlled drug release methods.

This study found that incorporating hair follicle-primed spheroids into skin constructs showed potential for developing hair-bearing skin mimetics with follicle-forming abilities in vitro.

This study developed a composite hydrogel that delivered multiple proteins, enhancing skin wound healing by accelerating closure and promoting hair follicle regeneration.

This study found that deleting ceramide synthase 4 in skin epidermis stem cells disrupts hair follicle and skin barrier function, leading to immune responses similar to atopic dermatitis, due to imbalances in lipid composition affecting differentiation.

This study concluded that hair pigmentation, as measured by eumelanin-to-pheomelanin ratio, is not a risk factor for developing alopecia areata when compared to androgenetic alopecia patients.

This study confirms that human CD34+ melanocyte stem cells can be differentiated into melanin-producing cells, suggesting potential for cellular therapy in treating skin degenerative diseases.

Hair follicles could be used for targeted drug delivery, with liposomal systems showing promise for this method.

This article discusses keratosis pilaris, a common skin condition often considered a normal variant, and reviews its associations, progression, and available treatments without reporting new clinical results.

This study reviewed 55 studies to assess the bacterial microbiome in hair follicles across different inflammatory skin and hair conditions, reporting shifts in the abundance of Cutibacterium and Staphylococcus among various diseases, though the causal significance remains unclear.

Hair papilla cells are crucial for blood vessel development in hair follicles, affecting hair growth and loss.

This article reviews the role of androgens in skin metabolism and diseases like acne and androgenic alopecia, but reports no new clinical results; the authors note unresolved issues regarding androgen interactions in skin structures.

This study found that mesenchymal stem cells showed potential to differentiate into hair follicle stem cells when induced by the supernatant of cultured hair follicles in vitro.

This study found that Acvr1b signaling is crucial for both hair follicle development and cycling in mice, with the genetic disruption leading to hair loss and a thickened epidermis.

This study found that the tetracycline-regulated transcription system effectively controls conditional gene expression in the mouse epidermis, allowing suppression and activation of specific genes with doxycycline.

This study investigated novel genetic tools to manipulate hair follicle compartments in mice and found that altering dermal papilla genes can significantly impact hair pigmentation.

This research found that Foxc1 transcription factor and COL17A1 are critical in regulating quiescence and hair thinning in hair follicle stem cells, with aging-related DNA damage leading to hair loss.

This study demonstrated that blocking the Sonic hedgehog signaling pathway in mice led to reversible inhibition of body coat hair morphogenesis, while whisker development was unaffected.

This study found that subcutaneous administration of conditioned medium from adipose-derived stem cells promoted hair growth in mice, and hypoxia enhanced this effect by altering growth factor secretion.

This study found that conditional expression of TGFβ1 in mice affects epidermal and hair follicle growth, with chronic expression causing severe alopecia and a negative feedback loop involving Smad7.

This review explores the hormonal regulation of hair growth and changes with season, age, and sexual development, and calls for improved treatments for hair disorders.

This research observed that dermal papilla cells have the potential to regenerate hair bulbs under preferred environmental conditions when associated with dermal sheath cells or exposed to specific growth factors.

This study found that proper levels of retinoic acid, controlled by the enzyme Cyp26b1, are essential for normal hair follicle development and morphogenesis in mice.

This study established an androgen-responsive human organ culture model using hair follicles, demonstrating that women's intermediate facial follicles grow more hair in response to men's higher androgen levels.