Carotenoids, a class of phytonutrients, have been well established to boost skin's innate resistance against ultraviolet (UV) B-induced erythema (sunburn). Many of the published clinical studies thus far have focused on the measurement of erythema as the primary clinical indicator of skin protection against UVB radiation. More recent studies have shown that carotenoid supplementation provides even more skin protection than previously shown as new clinical and molecular endpoints beyond UVB-induced erythema have been reported. These recent studies have demonstrated that carotenoids also provide photoprotection against UVA-induced pigmentation and inhibit molecular markers of oxidative stress such as intercellular adhesion molecule 1, heme oxygenase-1, and matrix metalloproteinases 1 and 9. This article provides a comprehensive review of the published clinical evidence on skin benefits of carotenoids in the last five decades and indicates new perspectives on the role of ingestible carotenoids in skin protection.
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http://dx.doi.org/10.1111/phpp.12690 | DOI Listing |
Eur J Pharmacol
January 2025
Graduate Program in Pharmacology, Federal University of Santa Catarina (UFSC), 88037-000 - Florianópolis (SC), Brazil. Electronic address:
Dithranol is one of the most effective topical medications for treating plaque psoriasis. However, its clinical use is limited by irritative adverse reactions to the skin, such as oedema, erythema, and pruritus, caused by poorly understood mechanisms. Because TRPV1 activation mediates skin irritation caused by several drugs, we conducted blind and randomised experiments in male and female C57BL/6 mice to elucidate the role of TRPV1 in dithranol-induced irritation.
View Article and Find Full Text PDFCurr Opin Allergy Clin Immunol
January 2025
Department of Pulmonology, Allergy and Thoracic Oncology, University Hospital of Montpellier, Montpellier, France.
Purpose Of Review: Climate change influences working conditions in various ways, affecting employee health and safety across different sectors. Climatic factors like rising temperatures, increased UV radiation, and more frequent extreme weather events pose risks to in both indoor and outdoor workers. Allergic diseases of the respiratory tract and the skin may emerge due to climate change.
View Article and Find Full Text PDFPhotodermatol Photoimmunol Photomed
January 2025
Department of Medicine and Medical Specialties, University of Alcalá de Henares, Madrid, Spain.
Background: Recommending comprehensive personalized photoprotection requires an accurate assessment of the patient's skin, including phototype, lifestyle, exposure conditions, environmental factors, and concomitant cutaneous conditions as well as deep knowledge of the available options: sunscreen ingredients (type of filters, spectrum coverage, sun protection factor, enhanced active ingredients), oral photoprotection, and other methods of sun protection and avoidance.
Objectives: To establish consensus-based recommendations endorsed by an international panel of experts for personalized medical photoprotection recommendations that are applicable globally.
Methods: A two-round Delphi study was designed to determine the degree of agreement and relevance of aspects related to personalized medical photoprotection.
Unlabelled: Melanin pigments block genotoxic agents by positioning on the sun-exposed side of human skin keratinocytes' nucleus. How this position is regulated and its role in genome photoprotection remains unknown. By developing a model of human keratinocytes internalizing extracellular melanin into pigment organelles, we show that keratin 5/14 intermediate filaments mechanically control the 3D perinuclear position of pigments, shielding DNA from photodamage.
View Article and Find Full Text PDFParasite Epidemiol Control
February 2025
Parasites and Vector Biology Research Unit (PAVBRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Background: Parasitic infections are known to suppress the cell mediated immunity that protects against tuberculosis. The status of parasitic infections among bacteriologically confirmed tuberculosis patients and their household contacts in Cameroon is not well established. This study aimed at reporting the status of parasitic infections in TB patients and their household contacts with keen interest in associated risk factors to disease exposure.
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