mBio
Costerton Biofilm Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
Published: February 2020
Human skin microbiota has been described as a "microbial fingerprint" due to observed differences between individuals. Current understanding of the cutaneous microbiota is based on sampling the outermost layers of the epidermis, while the microbiota in the remaining skin layers has not yet been fully characterized. Environmental conditions can vary drastically between the cutaneous compartments and give rise to unique communities. We demonstrate that the dermal microbiota is surprisingly similar among individuals and contains a specific subset of the epidermal microbiota. Variability in bacterial community composition decreased significantly from the epidermal to the dermal compartment but was similar among anatomic locations (hip and knee). The composition of the epidermal microbiota was more strongly affected by environmental factors than that of the dermal community. These results indicate a well-conserved dermal community that is functionally distinct from the epidermal community, challenging the current dogma. Future studies in cutaneous disorders and chronic infections may benefit by focusing on the dermal microbiota as a persistent microbial community. Human skin microbiota is thought to be unique according to the individual's lifestyle and genetic predisposition. This is true for the epidermal microbiota, while our findings demonstrate that the dermal microbiota is universal between healthy individuals. The preserved dermal microbial community is compositionally unique and functionally distinct to the specific environment in the depth of human skin. It is expected to have direct contact with the immune response of the human host, and research in the communication between host and microbiota should be targeted to this cutaneous compartment. This novel insight into specific microbial adaptation can be used advantageously in the research of chronic disorders and infections of the skin. It can enlighten the alteration between health and disease to the benefit of patients suffering from long-lasting socioeconomic illnesses.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7018652 | PMC |
http://dx.doi.org/10.1128/mBio.02945-19 | DOI Listing |
J Eur Acad Dermatol Venereol
January 2025
Arbeitsgemeinschaft Nachhaltigkeit in der Dermatologie (AGN) e.V., Freiburg, Germany.
Hazards to human and planetary health are present at every stage of the plastic life cycle, yet plastic production is projected to triple by 2060. This review focuses on three key areas: the life cycle of plastic, the impact of microplastics and their associated chemicals, along with recommendations to reduce plastic use. In dermatology, micro- and nanoplastics are especially problematic as they are present in over 90% of personal care products.
View Article and Find Full Text PDFPhotodermatol Photoimmunol Photomed
January 2025
Center of Burn & Plastic and Wound Healing Surgery, Hengyang Medical School, the First Affiliated Hospital, University of South China, Hengyang, China.
Objective: Exosomes (Exos) from adipose derived stem cells (ADSCs) can delay skin photoaging, but their effects on reactive oxygen species (ROS) remains unclear. This study aimed to investigate the relationship between adipose derived stem cell exosomes (ADSCs-Exos) in anti-photoaging of skin and glutathione (GSH)/ ROS expression in human fibroblasts.
Methods: A skin photoaging model was established by irradiating human fibroblasts with ultraviolet B (UVB) light in vitro.
Indian J Clin Biochem
January 2025
Department of Biochemistry, College of Medicine and J.N.M Hospital, WBUHS, Kalyani, West Bengal 741235 India.
Radiation therapy uses ionizing radiation (IR) to kill cancer cells. However, during radiotherapy normal cells are also damaged and killed by the generation of reactive oxygen species. Polyphenolic compounds are known to mitigate the damaging effects of radiation.
View Article and Find Full Text PDFFront Immunol
January 2025
Division of Child Healthcare, Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Background: The Aryl Hydrocarbon Receptor (AhR) pathway significantly influences immune cell regulation, impacting the effectiveness of immunotherapy and patient outcomes in melanoma. However, the specific downstream targets and mechanisms by which AhR influences melanoma remain insufficiently understood.
Methods: Melanoma samples from The Cancer Genome Atlas (TCGA) and normal skin tissues from the Genotype-Tissue Expression (GTEx) database were analyzed to identify differentially expressed genes, which were intersected with a curated list of AhR-related pathway genes.
Cureus
December 2024
Department of Medicine, Tower Health Medical Group, Reading, USA.
Objective: The recent development of xylazine adulteration of the illicit opiate supply has been associated with necrotic extremity wounds of unclear pathogenesis. This study sought to understand the prevalence and characteristics of delusional infestation (DI) among patients with opiate use disorders who also carried a diagnosis of cellulitis.
Methods: A retrospective cross-sectional study was performed in one health system to identify patients with opiate use disorder and cellulitis over the past three years who also described symptoms of DI.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!
© LitMetric 2025. All rights reserved.