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The conclusion is that the dermal papilla is crucial for hair follicle regrowth, and hair follicles undergo significant structural changes in addition to cell division during regeneration.

In this study, researchers explored how hypoxic preconditioning affects the survival and oxidative stress resilience of nestin-expressing hair follicle stem cells and SH-SY5Y neuroblastoma cells, focusing on changes in gene expression for HIF1α, BDNF, and VEGF.

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 the ocular surface epithelium in mice contains distinct stem cell populations with unique cell division dynamics that change behaviorally in response to different levels of injury.

Skin aging reflects overall body aging and can indicate internal health conditions.

This study reports that dynamic interactions between stem cells and their niche, influenced by macro-environmental factors, regulate regenerative behavior in integument pattern formation.

This article explores how extrafollicular environments and stem cell configurations influence hair and feather regeneration but provides no new experimental results.

This review discusses the interactions and signals affecting skin stem cells and their environments but reports no new experimental results; the authors highlight the need for understanding these processes to enhance tissue rejuvenation and repair.

This article provides an overview of the biological process of skin wound healing, detailing the roles of keratinocytes, dermal cells, and trichogenesis without presenting new experimental results.

This study reviewed changes in marketing practices of Australian clinics after a regulatory ban on direct-to-consumer advertising of stem cell products, finding improvements yet also limitations in addressing misleading claims and consumer safety.

This review highlights the various causes and treatment options for alopecia, noting that while non-scarring types often see successful hair regrowth, scarring forms require early intervention to manage inflammatory destruction of hair follicles.

This narrative piece considers how epigenetic factors may influence the processes of skin wound healing, including hair follicle formation, but it presents no new experimental results.

This article discusses the genomic and postgenomic changes in chronic degenerative diseases and cardiovascular and skin disease contexts, highlighting potential modulation through diet and pharmacological interventions without presenting new experimental results.

This article explores the complexity and significance of the hair follicle, emphasizing new insights into its biological roles and the involvement of p53 in follicular regression.

This study demonstrates that human hair follicle stem cells can be cultured and expanded without major changes to their phenotypes, which suggests potential for use in regenerative medicine.

Deleting Rac1 in the skin depletes stem cells and damages hair follicles.

This article reviews the functions and locations of skin stem cells and their role in regeneration and differentiation, relating age-associated skin changes to decreased stem cell functionality; it reports no new experimental findings.

This study found that aging mice with an epidermal deletion of DNA methyltransferase 1 had a reduced number of hair follicles, due to decreased stem cell activation probability.

This study found that reconstructed human epidermis from infant skin is more susceptible to UV damage than that from older children, with notable changes in skin cell characteristics during the early years of life.

This study found that stem cells derived from spinal and bulbar muscular atrophy patients exhibited reduced androgen receptor levels and HDAC6, providing potential insights into the disease mechanism for future therapies.

This study concluded that label-retaining cells in mouse epidermis differ in their sensitivity to proliferative stimuli, influencing their division and potential transdifferentiation without consistently depleting their population.

This study found that super-enhancers are essential for hair follicle stem cell identity, lineage commitment, and plasticity in mice, with SOX9 being a key regulator of these chromatin dynamics.

This review highlights recent advances in understanding how the extracellular matrix regulates epidermal stem cell fate, emphasizing the importance of the hair follicle stem cell niche, but reports no new empirical findings.

This review discusses the enhanced understanding of how stem cell niches respond adaptively to systemic signals, aging, and local perturbations, but reports no new research findings.

This study found that intradermal administration of adipose-derived stem cell–conditioned medium significantly increased hair density and dermal thickness, suggesting potential regenerative effects on both hair follicles and the interfollicular scalp in patients with alopecia.

In this study, loss of epidermal Par3 in mice disrupted the skin barrier and affected cell differentiation and stem cell maintenance, highlighting its role in epidermal homeostasis.

This study found that melatonin treatment increased epidermal thickness, subcutaneous fat, and dermal-related factors in postmenopausal rats, suggesting benefits for skin structure after menopause.

This study found that abnormal Wnt signalling in stem cells may contribute to blackhead formation in acne by inhibiting cell differentiation and causing cell accumulation in the junctional zone.

This case report describes a 43-year-old man who developed lupus miliaris disseminatus faciei after discontinuation of cyclosporine A post-stem cell transplantation, successfully treated with oral isotretinoin and topical tacrolimus.

This study reviews the role of skin stem cells in aging and explores how organoids, as opposed to traditional methods, can advance research into aging skin and regenerative therapies.