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Skin Microbiota: Mediator of Interactions Between Metabolic Disorders and Cutaneous Health and Disease.
Microorganisms
January 2025
Intensive Care Unit, Sismanogleio General Hospital, 37 Sismanogleiou Str., 15126 Marousi, Greece.
Metabolic disorders, including type 2 diabetes mellitus (T2DM), obesity, and metabolic syndrome, are systemic conditions that profoundly impact the skin microbiota, a dynamic community of bacteria, fungi, viruses, and mites essential for cutaneous health. Dysbiosis caused by metabolic dysfunction contributes to skin barrier disruption, immune dysregulation, and increased susceptibility to inflammatory skin diseases, including psoriasis, atopic dermatitis, and acne. For instance, hyperglycemia in T2DM leads to the formation of advanced glycation end products (AGEs), which bind to the receptor for AGEs (RAGE) on keratinocytes and immune cells, promoting oxidative stress and inflammation while facilitating Staphylococcus aureus colonization in atopic dermatitis.
View Article and Find Full Text PDFAn Overview of the Skin Microbiome, the Potential for Pathogen Shift, and Dysbiosis in Common Skin Pathologies.
Microorganisms
January 2025
Healthy Skin Team, Wesfarmers Centre of Vaccines and Infectious Diseases, The Kids Research Institute Australia, Perth, WA 6009, Australia.
Recent interest in the diverse ecosystem of bacteria, fungi, parasites, and viruses that make up the skin microbiome has led to several studies investigating the microbiome in healthy skin and in a variety of dermatological conditions. An imbalance of the normal skin flora can cause some skin diseases, and current culture techniques are often unable to detect a microorganism to further our understanding of the clinical-microbiological correlates of disease and dysbiosis. Atopic dermatitis and rosacea are presentations that GPs often manage that may have an infective or microbiological component and can be challenging to treat.
View Article and Find Full Text PDFCutaneous dysbiosis characterizes the post-allogeneic hematopoietic stem cell transplantation period.
Blood Adv
January 2025
The Jackson Laboratory, United States.
Gut dysbiosis is linked to mortality and the development of graft-versus-host disease (GVHD) after hematopoietic stem cell transplantation (HSCT), but the impact of cutaneous dysbiosis remains unexplored. We performed a pilot observational study and obtained retroauricular and forearm skin swabs from 12 adult patients prior to conditioning chemotherapy/radiation, and at 1-week, 1-month and 3-months after allogeneic HSCT, and performed shotgun metagenomic sequencing. The cutaneous microbiome among HSCT patients was enriched for gram-negative bacteria such as E coli and Pseudomonas, fungi, and viruses.
View Article and Find Full Text PDFSingle-cell sequencing of human Langerhans cells identifies altered gene expression profiles in patients with atopic dermatitis.
Immunohorizons
January 2025
Department of Medical Microbiology and Infection Prevention, Amsterdam UMC location University of Amsterdam, Amsterdam, the Netherlands.
Atopic dermatitis (AD) is characterized by dysregulated T cell immunity and skin microbiome dysbiosis with predominance of Staphylococcus aureus, which is associated with exacerbating AD skin inflammation. Specific glycosylation patterns of S. aureus cell wall structures amplify skin inflammation through interaction with Langerhans cells (LCs).
View Article and Find Full Text PDFAssociation of the skin microbiome with the biomechanical scar properties in patients with burns.
Burns
January 2025
Department of Rehabilitation Medicine, Hangang Sacred Heart Hospital, Hallym University College of Medicine, Seoul 07247, South Korea. Electronic address:
Background And Objectives: Skin microbiome dysbiosis can cause skin barrier dysfunction and stimulate scar property change. Skin barrier disruption post-burn injury leads to an imbalance in skin microbe diversity and distribution. We aimed to examine the changes in the skin microbiome of re-epithelialized burn scars.
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