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In this study, Wnt-3a was found to play an important role in partially maintaining and expanding epithelial skin stem cells in vitro, suggesting potential for in vitro stem cell culture without feeder cells.

This study reported that chronic use of performance-enhancing drugs significantly altered users' personalities and physical attributes, raising concerns about whether the perceived benefits outweigh the costs.

The document explains hair growth, hair loss types, and other hair-related terms.

This letter to the editor by Walter P. Unger discusses topics related to hair transplantation and reports no new research findings.

This article discusses the biologic and psychosocial significance of hair, the current limitations in hair growth drugs, and anticipates future therapies based on advancing hair follicle research.

This study found that ZnO nanoparticles in topical skin products do not penetrate beyond the outer skin layers in humans, suggesting minimal safety concerns for subdermal absorption.

This review discusses the role of stem cell progeny as integral components of stem cell niches, offering feedback that may influence different stem cell systems' microenvironments, but it presents no new research findings.

This research discusses how epithelial stem cells in the skin maintain normal homeostasis, contribute to wound repair, and highlights the importance of these processes, as defects can lead to skin diseases including cancers, but provides no new experimental results.

This article reviews the biological and physical principles of laser hair removal and reports that current laser systems do not consistently achieve permanent hair follicle destruction across treated areas.

This article provides contact information for Bruce A. Morgan and features no new research findings.

This study observed that keratose, derived from human hair, integrated well in mouse tissue and remodeled with collagen, suggesting potential as a non-toxic biomaterial for regenerative applications.

This review discusses the effects of estrogen on skin and reports no new clinical results; it highlights estrogen's potential benefits on skin thickness, collagen quality, and hair follicle life cycle.

The authors concluded that the dermal response to epidermal Wnt/β-catenin signaling depends on distinct fibroblast lineages, with each responding to different paracrine signals such as Hedgehog and TGF-β.

This article reviews the history and impacts of direct-to-consumer advertising of prescription drugs in the U.S. and reports no new research findings; it discusses implications for health policy debates.

This study developed and validated a computational model to optimize skin precooling methods for minimizing thermal damage during laser procedures.

This review discusses the relationship between estrogen deficiency and skin aging in postmenopausal women, noting potential benefits of estrogen use on skin collagen and elasticity, but reports no new clinical results.

This article reviews the characteristics and classification of SAHA syndrome and its relationship with other conditions, without presenting new clinical findings.

Hair growth can be induced by certain cells found at the base of hair follicles, and these cells may also influence hair development and regeneration.

This study found that irreversible and severe alopecia can occur following docetaxel or paclitaxel chemotherapy in breast cancer patients.

In this study, polymeric micelles containing retinoic acid were found to improve targeted delivery to hair follicle structures in human skin more efficiently than a marketed retinoic acid gel, suggesting potentially safer and more effective acne treatment.

This article reviews major types of genetic hair shaft defects and associated syndromes, emphasizing understanding histologic features and diagnostic methods, but reports no new clinical findings.

In this study, jaw wiring led to significant weight loss in patients with severe obesity, but two-thirds regained weight after the wires were removed.

This review explores the role of nanotechnology in wound healing, highlighting its potential through antimicrobial properties, selective inflammatory action, angiogenesis promotion, and its use in drug and gene delivery.

This article reviews the genetic and protein interactions involved in hair growth, highlighting regulatory sequences, expression patterns, and potential genetic modifications, but presents no new experimental findings.

This study found that liquid crystalline nanoparticles formulated with Cremophor surfactants significantly enhanced skin permeation of finasteride compared to lower surfactant concentrations.

This study found that women with androgenetic alopecia experience diffuse hair loss due to a decrease in terminal hairs and an increase in vellus hairs per follicular unit.

This review discusses the effects of oestrogen on skin ageing and highlights the need for large-scale clinical trials to evaluate postmenopausal oestrogen use, reporting no new findings.

This study investigated the tensile response and morphological changes of different ethnic hair types using AFM, showing variations between virgin, chemically damaged, and conditioner-treated Caucasian hair under different conditions.

This study suggests that true binary and ternary inclusion complexes were formed between finasteride and 2-hydroxypropyl-ß-cyclodextrin, with or without the addition of specific polymers.

This study found that women with androgenetic alopecia and alopecia areata had significantly lower serum ferritin levels compared to women without hair loss.