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This review discusses the challenges of interpreting observational studies on COVID-19 due to biases from non-representative samples, such as collider bias, and suggests better sampling methods to mitigate these issues.

This review explores how adult skin epithelia preserve stem cell populations for hair follicle regeneration and wound healing, but reports no new experimental results.

This study found that off-pump coronary surgery significantly reduces in-hospital morbidity compared to on-pump surgery without affecting midterm outcomes in the first 1-3 years after the procedure.

This review discusses the roles of key developmental signaling pathways in mammalian skin repair compared to skin development, and suggests these insights could lead to better wound healing therapies, but it reports no new findings.

This study reports the first instance of skin autotomy in mammals, specifically in African spiny mice, and suggests they may possess a greater regenerative capacity than previously understood, possibly offering insights for regenerative medicine.

This document extends previous recommendations by the National Lipid Association for managing dyslipidemia, focusing on lifestyle therapies, special patient groups, and strategies to enhance adherence and patient outcomes.

This article reviews the clinical complications and increased mortality risks associated with Cushing's syndrome but does not present new clinical data; it emphasizes the need for prompt treatment to mitigate these risks.

This article discusses the rationale, design, and significant findings of the long-running Rotterdam Study but reports no new clinical results.

This article reviews the design and objectives of the Rotterdam Study, as well as summarizes major findings, without reporting new results.

This review discusses the role of Lgr5 as a marker for identifying adult stem cells, particularly in the intestine and hair follicles, and reports no clinical results.

This study reveals that overexpression of Wnt3 in transgenic mouse skin leads to a short-hair phenotype and cyclical balding due to structural defects in hair shafts, highlighting a role for WNT signaling in hair growth regulation.

This article outlines the rationale and design of the Rotterdam Study, summarizes its major findings, and updates its objectives and methods; it reports no new research results.

This review discusses the significant role of Wnt signaling in skin development, homeostasis, and disease, highlighting recent advances in understanding its diverse functions, but reports no new experimental results.

This review discusses the role of epidermal and other adult stem cells in skin repair, focusing on their potential therapeutic applications for non-healing wounds and other skin disorders, but reports no new research results.

Two main types of fibroblasts with unique functions and additional subtypes were identified in human skin.

This article discusses the rationale, design, major findings, and updated objectives and methods of the ongoing Rotterdam Study on various diseases, without reporting new research results.

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.

In this mouse study, researchers found that dermal Wnt signaling/β-catenin activity is essential for fibroblast proliferation and initiating hair follicle formation by interacting with epidermal Wnt ligands.

This review discusses advances in understanding mammalian stem cell niches, particularly in bone marrow, tooth, and hair follicle, and highlights the potential for developing therapies targeting these niches for tissue repair.

This study describes a system for generating hair follicles from dissociated cells in mice, suggesting that successful development requires a foundational epithelial platform.

This study found that lifestyle interventions improved body composition, hyperandrogenism, and insulin resistance in women with PCOS, but did not affect glucose tolerance, lipid profiles, or clinical reproductive outcomes.

Fungi-produced compounds can change plant root growth.

This study reported that women with polycystic ovary syndrome had a higher prevalence of impaired glucose tolerance and type 2 diabetes, with variations influenced by ethnicity and obesity.

This review discusses biological sex differences in COVID-19 outcomes and reports no new clinical results; it identifies a need for studies to clarify how sex influences disease progression.

This review examines how epigenetic dysregulation affects adult stem cell function, noting that impacts range from minor to serious disruptions in tissue homeostasis and potential cancer development.

This study found that squamous cell carcinomas from hair follicle stem cells are more prone to epithelial to mesenchymal transition and metastasis than those from interfollicular epidermis, due to distinct chromatin landscapes.

Mammalian organs regenerate using stem cells and cell plasticity, but this ability declines with age.

This study found that keratin 17 and TNFα play interdependent roles in regulating hair follicle cycling, with TNFα required for the anagen–catagen transition and its ablation partially rescuing hair cycling defects in K17-null mice.

This review discusses the various stem cell populations associated with hair follicles and their potential in regenerative medicine, highlighting differences between murine and human hair follicles but reports no new clinical results.

This study found that keratin K14 expression occurs early in epidermal cell differentiation, while a hair-specific keratin is expressed later in hair matrix cells, suggesting developmental divergence between the two cell types.