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Front Physiol
January 2025
Regenerative Medicine Division, CHU de Quebec - Université Laval Research Centre, Quebec City, QC, Canada.
Introduction: Recent findings show that visible light, particularly blue light, stimulates melanogenesis in human skin, though the underlying mechanisms remain debated. This study aimed to determine the cell damage threshold of non-ionizing blue light on keratinocytes while preserving their ability to stimulate melanogenesis.
Methods: Human keratinocytes (N = 3) and melanocytes (N = 3) were isolated from skin samples of varying Fitzpatrick skin phototypes and irradiated with blue light (λpeak = 457 nm) and UVA light (λpeak = 385 nm).
J Cutan Med Surg
January 2025
PeriPharm Inc, Montréal, QC, Canada.
Background: Vitiligo is an autoimmune disease resulting in skin depigmentation. Treatment options are limited.
Objectives: To examine disease burden and healthcare resource utilization (HCRU) among patients with vitiligo in Québec, Canada.
PLoS One
January 2025
Faculty of Psychology, Department of Cognition, Emotion, and Methods in Psychology, University of Vienna, Vienna, Austria.
The Satisfaction With Life Scale (SWLS) is a widely used self-report measure of subjective well-being, but studies of its measurement invariance across a large number of nations remain limited. Here, we utilised the Body Image in Nature (BINS) dataset-with data collected between 2020 and 2022 -to assess measurement invariance of the SWLS across 65 nations, 40 languages, gender identities, and age groups (N = 56,968). All participants completed the SWLS under largely uniform conditions.
View Article and Find Full Text PDFJ Cutan Med Surg
January 2025
Windsor Clinical Research, Windsor, ON, Canada.
Acne vulgaris (AV) is a common skin condition that can cause substantial psychosocial impact. Treatments of AV target clearing and prevention of lesions and reducing scarring and dyspigmentation. Numerous medications are used to target one or more of the pathogenetic factors contributing to AV.
View Article and Find Full Text PDFNat Commun
January 2025
National Institute of Health and Medical Research (INSERM) UMRS-976 HIPI, Paris Cité University, Saint-Louis Hospital, 75010, Paris, France.
Endotypes are characterized by the immunological, inflammatory, metabolic, and remodelling pathways that explain the mechanisms underlying the clinical presentation (phenotype) of a disease. Recessive dystrophic epidermolysis bullosa (RDEB) is a severe blistering disease caused by COL7A1 pathogenic variants. Although underscored by animal studies, the endotypes of human RDEB are poorly understood.
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