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Khatib CM, Klein-Petersen AW, Rønnstad ATM, Egeberg A, Christensen MO, Silverberg JI, Thomsen SF, Irvine AD, Thyssen JP. Increased loss-of-function filaggrin gene mutation prevalence in atopic dermatitis patients across northern latitudes indicates genetic fitness: A systematic review and meta-analysis. Exp Dermatol 2024; 33:e15130. [PMID: 38989976 DOI: 10.1111/exd.15130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 05/23/2024] [Accepted: 06/24/2024] [Indexed: 07/12/2024]
Abstract
Loss-of-function (LoF) mutations in the filaggrin gene (FLG) constitute the strongest genetic risk for atopic dermatitis (AD). A latitude-dependent difference in the prevalence of LoF FLG mutations was systematically evaluated. A systematic review and meta-analysis were performed to estimate the prevalence of LoF FLG mutations in AD patients and the general population by geography and ethnicity. Risk of bias was assessed by Newcastle-Ottawa Scale and Jadad score. StatsDirect, version 3 software was used to calculate all outcomes. PubMed and EMBASE were searched until 9th December 2021. Studies were included if they contained data on the prevalence of LoF FLG mutations in AD patients or from the general population or associations between AD and LoF FLG mutations and were authored in English. Overall, 248 studies and 229 310 AD patients and individuals of the general population were included in the quantitative analysis. The prevalence of LoF FLG mutations was 19.1% (95% CI, 17.3-21.0) in AD patients and 5.8% (95% CI, 5.3-6.2) in the general population. There was a significant positive association between AD and LoF FLG mutations in all latitudes in the Northern hemisphere, but not in all ethnicities. The prevalence of LoF FLG mutations became gradually more prevalent in populations residing farther north of the Equator but was negligible in Middle Easterners and absent in most African populations. FLG LoF mutations are common and tend to increase with northern latitude, suggesting potential clinical implications for future AD management. The existence of possible genetic fitness from FLG LoF mutations remains unknown.
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Affiliation(s)
- Casper Milde Khatib
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | | | | | - Alexander Egeberg
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | | | | | - Simon Francis Thomsen
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
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de Boer FL, van der Molen HF, Wang JH, Raun E, Pereda J, Hwu EET, Jakasa I, Dubrac S, Rustemeyer T, Kezic S. Skin Barrier- and Immune Response-Related Biomarkers of Solar UVR Exposure Comparing Indoor and Outdoor Workers. JID INNOVATIONS 2024; 4:100280. [PMID: 38756236 PMCID: PMC11097112 DOI: 10.1016/j.xjidi.2024.100280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 03/26/2024] [Accepted: 03/31/2024] [Indexed: 05/18/2024] Open
Abstract
Outdoor workers have increased risk of developing keratinocyte cancer due to accumulated skin damage resulting from chronic and excessive exposure to UVR. This study aims to identify potential noninvasive biomarkers to assess chronic UVR exposure. We analyzed stratum corneum biomarkers collected from 2 skin locations and 2 occupational groups with contrasting solar UVR exposure: the forehead and retroauricular skin among outdoor workers and indoor workers. Using a linear mixed model adjusting for age and skin phototype, we compared biomarkers between both skin sites in indoor and outdoor workers. We measured markers of the immune response and skin barrier, including cytokines, GFs, 15-hydroxyeicosatetraenoic acid, cis- and trans-urocanic acid, and corneocyte topography, indicated by circular nano objects. Differences between the 2 skin sites were found for cis-urocanic acid, total urocanic acid, IL-1α, IL-1RA, IL-1RA/IL-1α, IL-18, 15-hydroxyeicosatetraenoic acid, CCL4, and circular nano objects. The levels of cis-urocanic acid and CCL4 also differed between indoor and outdoor workers. These findings underscore changes in both immune response and skin barrier induced by UVR. They indicate the potential utility of stratum corneum biomarkers in detecting both chronic UVR exposure in occupational setting and aiding in the development of preventive measures.
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Affiliation(s)
- Florentine L. de Boer
- Amsterdam Public Health Research Institute, Department of Public and Occupational Health, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Henk F. van der Molen
- Amsterdam Public Health Research Institute, Department of Public and Occupational Health, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Jen-Hung Wang
- Department of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Ellen Raun
- Department of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Jorge Pereda
- Department of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Edwin En-Te Hwu
- Department of Health Technology, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Ivone Jakasa
- Laboratory for Analytical Chemistry, Department of Chemistry and Biochemistry, Faculty of Food Technology and Biotechnology, University of Zagreb, Zagreb, Croatia
| | - Sandrine Dubrac
- Epidermal Biology Laboratory, Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - Thomas Rustemeyer
- Dermato-Allergology and Occupational Dermatology, Amsterdam University Medical Centers, Noord-Holland, The Netherlands
| | - Sanja Kezic
- Amsterdam Public Health Research Institute, Department of Public and Occupational Health, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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Liljedahl ER, Gliga A, de Paula HK, Engfeldt M, Julander A, Lidén C, Lindh C, Broberg K. Inflammation-related proteins in blood after dermal exposure to some common chemicals depend on the skin barrier gene filaggrin - a human experimental study. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 105:104346. [PMID: 38135200 DOI: 10.1016/j.etap.2023.104346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 12/18/2023] [Indexed: 12/24/2023]
Abstract
Filaggrin (FLG), a skin barrier protein, is associated with higher dermal uptake of some chemicals in carriers of loss-of-function (null) mutations. This study investigates FLG mutations and systemic effects following dermal exposure to chemicals. Individuals (n = 23 FLG null, n = 31 FLG wt) were simultaneously exposed to pyrimethanil, pyrene, oxybenzone, and nickel ions for 4 h. Pre- and post-exposure, 25-hydroxyvitamin D3 (25(OH)D3, LC-MS/MS) and 92 inflammation-related proteins (proximity-extension assay) were measured. FLG null carriers exhibited significantly higher 25(OH)D3 concentrations than wt carriers, both pre- and post-exposure. Eleven proteins differed in abundance post- vs pre-exposure among FLG null carriers, and 22 proteins among wt carriers (three proteins overlapped). Twelve proteins showed median differences (post- vs pre-exposure) between FLG null and wt carriers. Overall, FLG null carriers showed an increase, while FLG wt carriers showed a decrease in inflammation-related proteins. These findings suggest FLG-dependent differences in susceptibility to systemic effects following simultaneous dermal chemical exposure.
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Affiliation(s)
- Emelie Rietz Liljedahl
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Anda Gliga
- Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Helena Korres de Paula
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Malin Engfeldt
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden; Department of Occupational and Environmental Medicine, Region Skåne, Lund, Sweden
| | - Anneli Julander
- Sustainable Working life, IVL Swedish Environmental Research Institute, Stockholm, Sweden; Unit of Integrative Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Carola Lidén
- Unit of Integrative Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Christian Lindh
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Karin Broberg
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden; Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
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Rivera-Paredez B, Hidalgo-Bravo A, León-Reyes G, Barajas-Olmos F, Martínez-Hernández A, Orozco L, Denova-Gutiérrez E, Salmerón J, Velázquez-Cruz R. The role of single nucleotide variant rs3819817 of the Histidine Ammonia-Lyase gene and 25-Hydroxyvitamin D on bone mineral density, adiposity markers, and skin pigmentation, in Mexican population. J Endocrinol Invest 2023:10.1007/s40618-023-02051-1. [PMID: 36862244 DOI: 10.1007/s40618-023-02051-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 02/24/2023] [Indexed: 03/03/2023]
Abstract
PURPOSE Vitamin D (VD) deficiency and osteoporosis have become a global public health problem. A variant in the Histidine Ammonia-Lyase (HAL) gene has been associated with VD levels and bone mineral density (BMD). However, whether this variant has an influence on VD levels and BMD in Mexican adults remain unclear. METHODS This cross-sectional analysis included 1,905 adults participating in the Health Worker Cohort Study and 164 indigenous postmenopausal women from the Metabolic Analysis in an Indigenous Sample (MAIS) cohort. The rs3819817 variant was genotyped by TaqMan probe assay. Total 25 hydroxyvitamin D levels were measured by DiaSorin Liaison. BMD at the different sites was assessed through dual-energy X-ray absorptiometry. Linear and logistic regression models were performed to evaluate the associations of interest. RESULTS The prevalence of VD deficiency was 41%, showing differences between sexes. Obesity and skin pigmentation were associated with lower levels of VD in males and females. rs3819817-T allele was associated with low levels of 25-hydroxyvitamin D, VD deficiency, and hip and femoral neck BMD values (g/cm2). We found two interactions with VD levels, one between adiposity and rs3819817-T allele (P = 0.017) and another between skin pigmentation and rs3819817-T allele (P = 0.019). In indigenous postmenopausal women, we observed higher VD levels in the southern region compared to the northern region (P < 0.001); however, we did not observe differences by genotype. CONCLUSION Our findings confirm that the genetic variant rs3819817 has an essential function in VD levels and BMD and suggests a role in skin pigmentation in the Mexican population.
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Affiliation(s)
- B Rivera-Paredez
- Centro de Investigación en Políticas, Población y Salud de la Facultad de Medicina de la Universidad Nacional Autónoma de México (UNAM), Mexico City, México
| | - A Hidalgo-Bravo
- Departamento de Genética, Instituto Nacional de Rehabilitación, Mexico City, México
| | - G León-Reyes
- Laboratorio de Genómica del Metabolismo Óseo, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, México
| | - F Barajas-Olmos
- Laboratorio de Inmunogenómica y Enfermedades Metabólicas, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, México
| | - A Martínez-Hernández
- Laboratorio de Inmunogenómica y Enfermedades Metabólicas, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, México
| | - L Orozco
- Laboratorio de Inmunogenómica y Enfermedades Metabólicas, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, México
| | - E Denova-Gutiérrez
- Centro de Investigación en Nutrición y Salud, Instituto Nacional de Salud Pública (INSP), Cuernavaca, Morelos, México
| | - J Salmerón
- Centro de Investigación en Políticas, Población y Salud de la Facultad de Medicina de la Universidad Nacional Autónoma de México (UNAM), Mexico City, México
| | - R Velázquez-Cruz
- Laboratorio de Genómica del Metabolismo Óseo, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, México.
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Hyppönen E, Vimaleswaran KS, Zhou A. Genetic Determinants of 25-Hydroxyvitamin D Concentrations and Their Relevance to Public Health. Nutrients 2022; 14:4408. [PMID: 36297091 PMCID: PMC9606877 DOI: 10.3390/nu14204408] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/14/2022] [Accepted: 10/15/2022] [Indexed: 11/16/2022] Open
Abstract
Twin studies suggest a considerable genetic contribution to the variability in 25-hydroxyvitamin D (25(OH)D) concentrations, reporting heritability estimates up to 80% in some studies. While genome-wide association studies (GWAS) suggest notably lower rates (13−16%), they have identified many independent variants that associate with serum 25(OH)D concentrations. These discoveries have provided some novel insight into the metabolic pathway, and in this review we outline findings from GWAS studies to date with a particular focus on 35 variants which have provided replicating evidence for an association with 25(OH)D across independent large-scale analyses. Some of the 25(OH)D associating variants are linked directly to the vitamin D metabolic pathway, while others may reflect differences in storage capacity, lipid metabolism, and pathways reflecting skin properties. By constructing a genetic score including these 25(OH)D associated variants we show that genetic differences in 25(OH)D concentrations persist across the seasons, and the odds of having low concentrations (<50 nmol/L) are about halved for individuals in the highest 20% of vitamin D genetic score compared to the lowest quintile, an impact which may have notable influences on retaining adequate levels. We also discuss recent studies on personalized approaches to vitamin D supplementation and show how Mendelian randomization studies can help inform public health strategies to reduce adverse health impacts of vitamin D deficiency.
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Affiliation(s)
- Elina Hyppönen
- Australian Centre for Precision Health, Clinical and Health Sciences, University of South Australia, Adelaide, SA 5001, Australia
- South Australian Health and Medical Research Institute, Adelaide, SA 5001, Australia
| | - Karani S. Vimaleswaran
- Hugh Sinclair Unit of Human Nutrition, Department of Food and Nutritional Sciences, University of Reading, Reading RG6 6DZ, UK
- The Institute for Food, Nutrition and Health (IFNH), University of Reading, Reading RG6 6DZ, UK
| | - Ang Zhou
- Australian Centre for Precision Health, Clinical and Health Sciences, University of South Australia, Adelaide, SA 5001, Australia
- South Australian Health and Medical Research Institute, Adelaide, SA 5001, Australia
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Yu XD, Li A, Li XY, Zhou Y, Li X, He Z, Wang L, Reilly J, Tan Z, Xiao ZY, Shu X. Trans-urocanic acid facilitates spatial memory, implications for Alzheimer's disease. Physiol Behav 2022; 252:113827. [PMID: 35490778 DOI: 10.1016/j.physbeh.2022.113827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 10/18/2022]
Abstract
Trans-urocanic acid (trans-UCA) is an isomer of cis-UCA and is widely distributed in the brain, predominantly in the hippocampus and prefrontal cortex. Previous studies have investigated the role of trans-UCA in non-spatial memory; however, its influence on spatial memory remains unclear. In the present study, network pharmacology strategy and behavioral testing were used to evaluate the role of trans-UCA in spatial memory and predict its possible mechanism. The results showed that there are 40 intersecting targets between trans-UCA and spatial memory identified by several databases and Venn diagram, indicating that trans-UCA may be involved in spatial memory. Behavioral results show that trans-UCA facilitates spatial working memory in the Y-maze test as well as spatial recognition memory acquisition, consolidation and retrieval in an object location recognition (OLR) task. Furthermore, PPI (protein-protein interaction) network analysis, GO (gene ontology) and KEGG (Kyoto encyclopedia of genes and genomes) pathway enrichment analyses show that the molecular mechanisms underlying the enhancing effect of trans-UCA on spatial memory are mainly associated with the regulation of insulin, mitogen-activated protein kinase (MAPK) and nuclear factor Kappa B (NF-κB) signaling pathways, serotonergic synapse and arginine and proline metabolism. The results of this study suggest that trans-UCA facilitates spatial memory in the Y-maze test and OLR task and may offer therapeutic potential for Alzheimer's disease (AD). The underlying mechanisms predicted by network pharmacology should be further verified.
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Affiliation(s)
- Xu-Dong Yu
- School of Basic Medical Sciences, Shaoyang University, 422000, Shaoyang, China
| | - Ao Li
- School of Basic Medical Sciences, Shaoyang University, 422000, Shaoyang, China
| | - Xiao-Ya Li
- College of Chinese Medicine, Hunan University of Chinese Medicine, , 410208 Changsha, Hunan, China
| | - Yu Zhou
- School of Basic Medical Sciences, Shaoyang University, 422000, Shaoyang, China
| | - Xing Li
- School of Basic Medical Sciences, Shaoyang University, 422000, Shaoyang, China
| | - Zhiming He
- School of Basic Medical Sciences, Shaoyang University, 422000, Shaoyang, China
| | - Le Wang
- School of Basic Medical Sciences, Shaoyang University, 422000, Shaoyang, China
| | - James Reilly
- Department of Biological and Biomedical Sciences, Glasgow Caledonian University, G4 0BA, Glasgow, United Kingdom
| | - Zhoujin Tan
- College of Chinese Medicine, Hunan University of Chinese Medicine, , 410208 Changsha, Hunan, China
| | - Zhi-Yong Xiao
- The First Affiliated Hospital,Department of Critical Care Medicine,Hengyang Medical School, University of South China, 421001, Hengyang, Hunan, China.
| | - Xinhua Shu
- School of Basic Medical Sciences, Shaoyang University, 422000, Shaoyang, China; Department of Biological and Biomedical Sciences, Glasgow Caledonian University, G4 0BA, Glasgow, United Kingdom.
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Keurentjes AJ, Kezic S, Rustemeyer T, Hulshof CTJ, van der Molen HF. Stimulating Sunscreen Use Among Outdoor Construction Workers: A Pilot Study. Front Public Health 2022; 10:857553. [PMID: 35433569 PMCID: PMC9010717 DOI: 10.3389/fpubh.2022.857553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 02/22/2022] [Indexed: 11/13/2022] Open
Abstract
Background Outdoor workers (OW) receive a higher dose of ultraviolet radiation (UVR) compared to indoor workers (IW) which increases the risk of non-melanoma skin cancer (NMSC). Regular sunscreen use reduces the NMSC risk, however, adequate sun-safety behavior among OW is poor. The main objective was to conduct method- and intervention-related elements of a future intervention trial among OW, based on providing sunscreen and assessing sunscreen use on group- and individual level. Methods This pilot study was conducted at a construction site in the Netherlands from May-August 2021. Nine dispensers with sunscreen (SPF 50+) were installed at the worksite. OW (n = 67) were invited to complete two (cross-sectional) questionnaires on sun-safety behavior, before and after providing sunscreen. Stratum corneum (SC) samples for the assessment of UV-biomarkers were collected from the forehead and behind the ear from 15 OW and 15 IW. The feasibility of the following elements was investigated: recruitment, (loss to) follow-up, outcome measures, data collection, and acceptability of the intervention. Results The first questionnaire was completed by 27 OW, the second by 17 OW. More than 75 percent of the OW were aware of the risks of sun exposure, and 63% (n = 17) found sunscreen use during worktime important. The proportion of OW never applying sunscreen in the past month was 44.4% (n = 12) before, and 35.3% (n = 6) after providing sunscreen. A majority of OW (59.3%, n = 16) found sunscreen provision encouraging for sunscreen use, the dispensers easy to use (64.7%, n = 17) and placed in practical spots (58.8%, n = 18). Collecting SC-samples was fast and easy, and several UV-biomarkers showed higher levels for sun-exposed compared to less exposed body parts. There was no significant difference in UV-biomarker levels between OW and IW. Conclusions This pilot study revealed low sunscreen use among OW despite providing sunscreen, overall satisfaction with the sunscreen, and the sufficient awareness of the risks of UVR-exposure. Collecting SC-samples at the workplace is feasible and several UV-biomarkers showed to be promising in assessing UVR-exposure. The low participation rate and high loss to follow-up poses a challenge for future intervention studies.
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Affiliation(s)
- Anne J. Keurentjes
- Department of Public and Occupational Health, Amsterdam Public Health Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
- *Correspondence: Anne J. Keurentjes
| | - Sanja Kezic
- Department of Public and Occupational Health, Amsterdam Public Health Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Thomas Rustemeyer
- Department of Dermatology and Allergology, Amsterdam University Medical Centers (UMC), Amsterdam, Netherlands
| | - Carel T. J. Hulshof
- Department of Public and Occupational Health, Amsterdam Public Health Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Henk F. van der Molen
- Department of Public and Occupational Health, Amsterdam Public Health Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
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Yu XD, Mo YX, He Z, Reilly J, Tian SW, Shu X. Urocanic acid enhances memory consolidation and reconsolidation in novel object recognition task. Biochem Biophys Res Commun 2021; 579:62-68. [PMID: 34587556 DOI: 10.1016/j.bbrc.2021.09.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/22/2021] [Indexed: 10/20/2022]
Abstract
Urocanic acid (UCA) is an endogenous small molecule that is elevated in skin, blood and brain after sunlight exposure, mainly playing roles in the periphery systems. Few studies have investigated the role of UCA in the central nervous system. In particular, its role in memory consolidation and reconsolidation is still unclear. In the present study, we investigated the effect of intraperitoneal injection of UCA on memory consolidation and reconsolidation in a novel object recognition memory (ORM) task. In the consolidation version of the ORM task, the protocol involved three phases: habituation, sampling and test. UCA injection immediately after the sampling period enhanced ORM memory performance; UCA injection 6 h after sampling did not affect ORM memory performance. In the reconsolidation version of the ORM task, the protocol involved three phases: sampling, reactivation and test. UCA injection immediately after reactivation enhanced ORM memory performance; UCA injection 6 h after reactivation did not affect ORM memory performance; UCA injection 24 h after sampling without reactivation did not affect ORM memory performance. This UCA-enhanced memory performance was not due to its effects on nonspecific responses such as locomotor activity and exploratory behavior. The results suggest that UCA injection enhances consolidation and reconsolidation of an ORM task, which further extends previous research on UCA effects on learning and memory.
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Affiliation(s)
- Xu-Dong Yu
- School of Basic Medical Sciences, Shaoyang University, Shaoyang, 422000, PR China; Hunan Engineering Research Center of Development and Utilization of Traditional Chinese Medicine in Southwest Hunan, Shaoyang University, Shaoyang, 422000, PR China; Department of Physiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, PR China
| | - Yan-Xin Mo
- School of Basic Medical Sciences, Shaoyang University, Shaoyang, 422000, PR China; Hunan Engineering Research Center of Development and Utilization of Traditional Chinese Medicine in Southwest Hunan, Shaoyang University, Shaoyang, 422000, PR China
| | - Zhiming He
- School of Basic Medical Sciences, Shaoyang University, Shaoyang, 422000, PR China; Hunan Engineering Research Center of Development and Utilization of Traditional Chinese Medicine in Southwest Hunan, Shaoyang University, Shaoyang, 422000, PR China
| | - James Reilly
- Department of Biological and Biomedical Sciences, Glasgow Caledonian University, Glasgow, G4 0BA, UK
| | - Shao-Wen Tian
- Department of Physiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, PR China; Guangxi Key Laboratory of Brain and Cognitive Neuroscience, Faculty of Basic Medical Sciences, Guilin Medical University, Guilin, Guangxi, 541199, PR China.
| | - Xinhua Shu
- School of Basic Medical Sciences, Shaoyang University, Shaoyang, 422000, PR China; Department of Biological and Biomedical Sciences, Glasgow Caledonian University, Glasgow, G4 0BA, UK; Department of Vision Science, Glasgow Caledonian University, Glasgow, G4 0BA, UK.
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9
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Keurentjes AJ, Jakasa I, van Dijk A, van Putten E, Brans R, John SM, Rustemeyer T, van der Molen HF, Kezic S. Stratum corneum biomarkers after in vivo repeated exposure to sub-erythemal dosages of ultraviolet radiation in unprotected and sunscreen (SPF 50+) protected skin. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2021; 38:60-68. [PMID: 34278599 DOI: 10.1111/phpp.12717] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 06/16/2021] [Accepted: 07/04/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND There is a need for non-invasive biomarkers to assess in vivo efficacy of protective measures aiming at reducing ultraviolet radiation (UVR) exposure. Stratum corneum (SC) biomarkers showed to be promising markers for internal UVR dose and immune response. PURPOSE To establish a dose-response relationship for SC biomarkers and explore their suitability for in vivo assessment of the blocking effect of two sunscreens with a high sun protection factor (SPF) (50+). METHODS Twelve volunteers were exposed to a broad-spectrum UVB (280-320 nm), five times a week, during one week. Unprotected back skin was irradiated with 0.24, 0.48, 0.72 and 1.44 standard erythema dose (SED) and sunscreen-protected skin with 3.6 SED. SC samples for determination of the relative amount of cis-urocanic acid (cUCA) and thirteen immunological makers including cytokines and matrix metalloproteinases (MMP) were collected after each irradiation. RESULTS cUCA sharply increased after the first irradiation in a dose-dependent fashion. However, it levelled-off after subsequent exposures and reached a plateau for the highest UV-dose after the third irradiation. None of the immunological markers showed dose-dependency. However, MMP-9, IL-1β and CCL27 increased gradually from baseline during repetitive exposures to the highest UV-dose. Assessed from cUCA, both sunscreens blocked >98% of the applied UV-dose. CONCLUSIONS cUCA is a sensitive, non-invasive marker of the internal UVR dose enabling in vivo assessment of the blocking effect of high SPF sunscreens in the UVB-region. Immunological SC markers show low sensitivity in detecting immune response at sub-erythemal UVR dosages, suggesting they might be suitable only at higher and/or repetitive UVR exposure.
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Affiliation(s)
- Anne Josephine Keurentjes
- Department of Public and Occupational Health, Amsterdam UMC, University of Amsterdam, Amsterdam Public Health research institute, Amsterdam, The Netherlands
| | - Ivone Jakasa
- Department of Chemistry and Biochemistry, Laboratory for Analytical Chemistry, Faculty of Food Technology and Biotechnology, University of Zagreb, Zagreb, Croatia
| | - Arjan van Dijk
- Center for Environmental Safety and Security, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Edith van Putten
- Center for Environmental Safety and Security, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Richard Brans
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, Osnabrück, Germany.,Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm) at the University of Osnabrück, Osnabrück, Germany
| | - Swen Malte John
- Department of Dermatology, Environmental Medicine and Health Theory, University of Osnabrück, Osnabrück, Germany.,Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm) at the University of Osnabrück, Osnabrück, Germany
| | - Thomas Rustemeyer
- Department of Dermatology and Allergology, Amsterdam UMC, Amsterdam, The Netherlands
| | - Henk F van der Molen
- Department of Public and Occupational Health, Amsterdam UMC, University of Amsterdam, Amsterdam Public Health research institute, Amsterdam, The Netherlands
| | - Sanja Kezic
- Department of Public and Occupational Health, Amsterdam UMC, University of Amsterdam, Amsterdam Public Health research institute, Amsterdam, The Netherlands
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Keurentjes AJ, Kezic S, Rustemeyer T, Hulshof CTJ, van der Molen HF. Protection Against Solar Ultraviolet Radiation in Outdoor Construction Workers: Study Protocol for a Non-randomized Controlled Intervention Study. Front Public Health 2021; 9:602933. [PMID: 33748058 PMCID: PMC7969508 DOI: 10.3389/fpubh.2021.602933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 02/10/2021] [Indexed: 01/18/2023] Open
Abstract
Introduction: Non-melanoma skin cancer (NMSC) incidence is increasing, and occupational solar exposure contributes greatly to the overall lifetime ultraviolet radiation (UVR) dose. This is reflected in an excess risk of NMSC showing up to three-fold increase in outdoor workers. Risk of NMSC can be reduced if appropriate measures to reduce UVR-exposure are taken. Regular use of sunscreens showed reduced risk of NMSC. However, sun-safety behavior in outdoor workers is poor. The objective of this study is to investigate the effectiveness of an intervention aiming at increasing sunscreen use by construction workers. Methods: This non-randomized controlled intervention study is comprised of two intervention and two control groups recruited at four different construction sites in the Netherlands. The study population comprises ~200 construction workers, aged 18 years or older, followed during 12 weeks. The intervention consists of providing dispensers with sunscreens (SPF 50+) at construction sites and regular feedback on the application achieved by continuous electronic monitoring. All groups will receive basic information on UV-exposure and skin protection. Stratum corneum (SC) samples will be collected for measurement of biomarkers to assess internal UV-dose. External UV-dose will be assessed by personal UV-sensors worn by the workers during work-shifts in both groups. To detect presence of actinic keratosis (AK) or NMSC, a skin check of body parts exposed to the sun will be performed at the end of the study. The effect of the intervention will be assessed from data on self-reported sunscreen use by means of questionnaires collected on baseline and after 12 weeks of intervention (primary outcome). Levels of SC biomarkers of internal UV-dose, external UV-dose, number of sunburn episodes, and prevalence of NMSC including AK will be assessed as secondary outcomes. The electronically monitored sunscreen consumption will be assessed as process outcome. Discussion: This study is intended to provide evidence of the effectiveness of a technology-driven intervention to increase sunscreen use in outdoor construction workers. Furthermore, it will increase insight in the UV-protective behavior, external and internal UV-exposure, and the prevalence of NMSC, including AK, in construction workers. Trial Registration: The Netherlands Trial Register (NTR): NL8462 Registered on March 19, 2020.
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Affiliation(s)
- Anne J Keurentjes
- Amsterdam University Medical Centers, University of Amsterdam, Department of Public and Occupational Health, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
| | - Sanja Kezic
- Amsterdam University Medical Centers, University of Amsterdam, Department of Public and Occupational Health, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
| | - Thomas Rustemeyer
- Department of Dermatology and Allergology, Amsterdam University Medical Centers, Amsterdam, Netherlands
| | - Carel T J Hulshof
- Amsterdam University Medical Centers, University of Amsterdam, Department of Public and Occupational Health, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
| | - Henk F van der Molen
- Amsterdam University Medical Centers, University of Amsterdam, Department of Public and Occupational Health, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
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11
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Hart PH, Norval M. The Multiple Roles of Urocanic Acid in Health and Disease. J Invest Dermatol 2021; 141:496-502. [DOI: 10.1016/j.jid.2020.07.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 07/15/2020] [Accepted: 07/30/2020] [Indexed: 12/31/2022]
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12
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Lima FV, Martins TEA, Morocho-Jácome AL, Almeida IF, Rosado CF, Velasco MVR, Baby AR. Analytical tools for urocanic acid determination in human samples: A review. J Sep Sci 2020; 44:438-447. [PMID: 33090611 DOI: 10.1002/jssc.202000713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 10/07/2020] [Accepted: 10/12/2020] [Indexed: 11/08/2022]
Abstract
Urocanic acid is a chromophore found in the skin that has been identified as an important immunosuppressant and carcinogenesis mediator through its photoisomerization from trans to cis form induced by ultraviolet radiation. Research on analytical methods that explore urocanic acid isomerization is indispensable to fully understand the deleterious effects mediated by this biomarker. In this context, the current relevant analytical methods for determination of these isomers in human samples are summarized in this review. The methods presented here are applicable to human samples collected by noninvasive methods (or minimally invasive), encompassing an array of analytical techniques, including high-performance capillary electrophoresis, confocal Raman spectroscopy, gas chromatography, high-performance liquid chromatography, and mass spectrometry, among others. Developed high-performance liquid chromatography methods have proven to be advantageous, allowing noninvasive collections for in vivo analysis and the confocal Raman, specially, for real-time analysis. Among all these methods, high-performance liquid chromatography is the most investigated one with mass spectrometry or ultraviolet detector, and the mass spectrometry detector being the most studied in the last years, demonstrating high sensitivity, very low detection limits, and accurate identification, especially for clinical investigations.
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Affiliation(s)
- Fabiana Vieira Lima
- Division to Faculty of Pharmacy, Department of Healthy Science, University of Espírito Santo, São Mateus, Brazil.,Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Tércio Elyan Azevedo Martins
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.,Health Sciences Institute, Paulista University, São Paulo, Brazil
| | - Ana Lucia Morocho-Jácome
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Isabel Filipa Almeida
- Department of Drug Sciences, Faculty of Pharmacy, UCIBIO/REQUIMTE, MedTech-Laboratory of Pharmaceutical Technology, University of Porto, Porto, Portugal
| | - Catarina Fialho Rosado
- CBIOS, Universidade Lusófona's Research Center for Biosciences and Health Technologies, Lisbon, Portugal
| | | | - André Rolim Baby
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
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13
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Keurentjes AJ, Jakasa I, John SM, Ulrich C, Bekkenk MW, Rustemeyer T, Kezic S. Tape stripping the stratum corneum for biomarkers of ultraviolet radiation exposure at sub-erythemal dosages: a study in human volunteers. Biomarkers 2020; 25:490-497. [PMID: 32657162 DOI: 10.1080/1354750x.2020.1792551] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE Prevalence of skin cancer is rapidly increasing. There is a need for non-invasive biomarkers to assess efficacy of prevention strategies aiming at reduction of exposure to ultraviolet radiation (UVR). Recently, stratum corneum (SC) biomarkers were applied in various inflammatory skin diseases. Here, we explore their suitability as candidate biomarkers for UVR. MATERIAL AND METHODS Twelve volunteers were exposed to a UVB-dose of 0.72 SED, three times a week, during three weeks. As candidate biomarkers, cis-isomers of urocanic acid (cUCA) and 25 immunological mediators were measured in the SC. RESULTS Eight immunological markers significantly changed from baseline. Of them, IL-1RA/IL-1α and a placental growth factor (PIGF) showed gradual changes during UVR-exposure (p < 0.01 for linear trend). cUCA increased sharply already after the first exposure, however, reached a plateau in the second week. CONCLUSIONS SC represents a promising, non-invasive alternative to skin biopsy in detecting UVR-induced changes. cUCA is the marker of choice for assessment of single UVR-exposure; however, it is less suitable for cumulative UVR-dose. Immunological markers including IL-1RA/IL-1α and PIGF showed gradual changes, and therefore are convenient for monitoring chronic UVR-exposure. These candidate biomarkers might facilitate assessment of the efficacy of preventive measures in the workplace and general population.
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Affiliation(s)
- Anne J Keurentjes
- Coronel Institute of Occupational Health, Amsterdam University Medical Centers, Location AMC, Amsterdam, The Netherlands
| | - Ivone Jakasa
- Department of Chemistry and Biochemistry, Faculty of Food Technology and Biotechnology, Laboratory for Analytical Chemistry, University of Zagreb, Zagreb, Croatia
| | - Swen M John
- Department of Dermatology, Environmental Medicine, University of Osnabrueck, Osnabrueck, Germany.,Institute for Interdisciplinary Dermatological Prevention and Rehabilitation (iDerm), Lower-Saxonian Institute of Occupational Dermatology (NIB), University of Osnabrück, Osnabrueck, Germany
| | - Claas Ulrich
- Skin Cancer Centre/HTCC, Hautklinik der Charité, Berlin, Germany
| | - Marcel W Bekkenk
- Department of Dermatology, Amsterdam University Medical Centers, Location AMC, Amsterdam, The Netherlands
| | - Thomas Rustemeyer
- Department of Dermatology and Allergology, Amsterdam University Medical Centers, Location AMC, Amsterdam, The Netherlands
| | - Sanja Kezic
- Coronel Institute of Occupational Health, Amsterdam University Medical Centers, Location AMC, Amsterdam, The Netherlands
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14
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Keurentjes AJ, de Witt KD, Jakasa I, Rüther L, Kemperman PMJH, Kezic S, Riethmüller C. Actinic keratosis and surrounding skin exhibit changes in corneocyte surface topography and decreased levels of filaggrin degradation products. Exp Dermatol 2020; 29:462-466. [PMID: 32112584 PMCID: PMC7317372 DOI: 10.1111/exd.14089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 01/16/2020] [Accepted: 02/24/2020] [Indexed: 11/27/2022]
Abstract
Actinic keratosis (AK) is a frequent premalignant skin lesion mainly caused by chronic sun exposure. AK lesions are often surrounded by invisible, subclinical alterations, called field of cancerization (FoC). Definition of FoC is of importance for therapy management; however, the criteria and non-invasive tools to characterize FoC are lacking. Atomic force microscopy (AFM) proved to be a suitable tool for detection of changes in the corneocyte surface topography in inflammatory skin diseases, which share similar clinical features with AK such as hyper- and parakeratosis. Therefore, in this study we applied AFM to investigate AK and surrounding skin obtained by non-invasive collection of the stratum corneum (SC) with adhesive tapes. Furthermore, we determined degradation products of structural protein filaggrin (natural moisturizing factor, NMF), which previously showed association with the changes in corneocyte surface topography. Ten patients with multiple AK on the face were recruited from the outpatient clinic. SC samples were collected from the AK lesion, skin sites adjacent to the AK, 5 cm from the AK and retroauricular area. Corneocyte surface topography was determined by AFM, and NMF by liquid chromatography. The AK lesion showed alterations of the corneocyte surface topography characterized by an increased number of nanosize protrusions, which gradually decreased with the distance from the lesion. NMF levels show an inverse pattern. Atomic force microscopy showed to be a suitable tool to detect changes in the corneocyte surface topography on the AK lesion and surrounding skin in a non-invasive manner.
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Affiliation(s)
- Anne J. Keurentjes
- Coronel Institute of Occupational HealthAmsterdam UMC, location AMCAmsterdamThe Netherlands
| | - Kornelis D. de Witt
- Coronel Institute of Occupational HealthAmsterdam UMC, location AMCAmsterdamThe Netherlands
| | - Ivone Jakasa
- Laboratory for Analytical ChemistryDepartment of Chemistry and BiochemistryFaculty of Food Technology and BiotechnologyUniversity of ZagrebZagrebCroatia
| | | | - Patrick M. J. H. Kemperman
- Department of DermatologyAmsterdam UMC, location AMCAmsterdamThe Netherlands
- Department of Dermatology, Dijklander ZiekenhuisPurmerendThe Netherlands
| | - Sanja Kezic
- Coronel Institute of Occupational HealthAmsterdam UMC, location AMCAmsterdamThe Netherlands
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15
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Revez JA, Lin T, Qiao Z, Xue A, Holtz Y, Zhu Z, Zeng J, Wang H, Sidorenko J, Kemper KE, Vinkhuyzen AAE, Frater J, Eyles D, Burne THJ, Mitchell B, Martin NG, Zhu G, Visscher PM, Yang J, Wray NR, McGrath JJ. Genome-wide association study identifies 143 loci associated with 25 hydroxyvitamin D concentration. Nat Commun 2020; 11:1647. [PMID: 32242144 PMCID: PMC7118120 DOI: 10.1038/s41467-020-15421-7] [Citation(s) in RCA: 215] [Impact Index Per Article: 53.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/03/2020] [Indexed: 02/07/2023] Open
Abstract
Vitamin D deficiency is a candidate risk factor for a range of adverse health outcomes. In a genome-wide association study of 25 hydroxyvitamin D (25OHD) concentration in 417,580 Europeans we identify 143 independent loci in 112 1-Mb regions, providing insights into the physiology of vitamin D and implicating genes involved in lipid and lipoprotein metabolism, dermal tissue properties, and the sulphonation and glucuronidation of 25OHD. Mendelian randomization models find no robust evidence that 25OHD concentration has causal effects on candidate phenotypes (e.g. BMI, psychiatric disorders), but many phenotypes have (direct or indirect) causal effects on 25OHD concentration, clarifying the epidemiological relationship between 25OHD status and the health outcomes examined in this study.
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Affiliation(s)
- Joana A Revez
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Tian Lin
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Zhen Qiao
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Angli Xue
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Yan Holtz
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Zhihong Zhu
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Jian Zeng
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Huanwei Wang
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Julia Sidorenko
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Kathryn E Kemper
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Anna A E Vinkhuyzen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Julanne Frater
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Darryl Eyles
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health, Wacol, QLD, Australia
| | - Thomas H J Burne
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health, Wacol, QLD, Australia
| | - Brittany Mitchell
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
- School of Biomedical Sciences, Faculty of Health, and Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
| | | | - Gu Zhu
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Peter M Visscher
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Jian Yang
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- Institute for Advanced Research, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Naomi R Wray
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia.
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia.
| | - John J McGrath
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia.
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health, Wacol, QLD, Australia.
- National Centre for Register-based Research, Aarhus University, Aarhus, Denmark.
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16
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Singer S, Berneburg M. Phototherapy. J Dtsch Dermatol Ges 2019; 16:1120-1129. [PMID: 30179320 DOI: 10.1111/ddg.13646] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 06/19/2018] [Indexed: 12/19/2022]
Abstract
The efficacy of phototherapy is based on the interaction between ultraviolet (UV) radiation and the skin. The photobiological effects thus achieved depend on the wavelengths used. Targeted use of UVA and UVB, where indicated in combination with a photosensitizer such as psoralen, provides the dermatologist with a broad armamentarium for the treatment of a multitude of skin diseases. The spectrum of indications ranges from superficial dermatitis, psoriasis, and malignancies, such as cutaneous T-cell lymphoma, to deep sclerosing conditions such as morphea. The objective of the present review is to highlight the photobiological effects of the various types of UV radiation as well as the resultant clinical indications for phototherapy.
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Affiliation(s)
- Sebastian Singer
- Department of Dermatology, Regensburg University Medical Center, Regensburg, Germany
| | - Mark Berneburg
- Department of Dermatology, Regensburg University Medical Center, Regensburg, Germany
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17
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Singer S, Berneburg M. Phototherapie. J Dtsch Dermatol Ges 2019; 16:1120-1131. [PMID: 30179327 DOI: 10.1111/ddg.13646_g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 06/19/2018] [Indexed: 12/20/2022]
Abstract
Die Phototherapie nutzt die photobiologische Wirkung von ultravioletter (UV-)Strahlung auf unseren Organismus. Die verschiedenen Wellenlängen der Strahlung rufen dabei ganz unterschiedliche Effekte hervor. Der gezielte Einsatz von UV-A und UV-B, gegebenenfalls auch in Kombination mit dem Photosensibilisator Psoralen im Rahmen einer PUVA-Therapie, ermöglicht dem Dermatologen die effektive Behandlung der verschiedensten Hautkrankheiten. Das Indikationsspektrum der Phototherapie reicht von oberflächlichen Ekzemerkrankungen, Psoriasis, malignen Erkrankungen wie dem kutanen T-Zell-Lymphom, bis hin zu tief in der Dermis lokalisierten sklerosierenden Erkrankungen wie der Sklerodermie. Das Verständnis der zugrunde liegenden photobiologischen Wirkmechanismen der verschiedenen Bereiche der UV-Strahlung und die sich daraus ableitenden Indikationen für eine Phototherapie soll der folgende Artikel ermöglichen.
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Affiliation(s)
- Sebastian Singer
- Klinik und Poliklinik für Dermatologie, Universitätsklinikum Regensburg
| | - Mark Berneburg
- Klinik und Poliklinik für Dermatologie, Universitätsklinikum Regensburg
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18
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Rahrig S, Dettmann JM, Brauns B, Lorenz VN, Buhl T, Kezic S, Elias PM, Weidinger S, Mempel M, Schön MP, Braun A. Transient epidermal barrier deficiency and lowered allergic threshold in filaggrin-hornerin (FlgHrnr -/- ) double-deficient mice. Allergy 2019; 74:1327-1339. [PMID: 30828807 DOI: 10.1111/all.13756] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/19/2018] [Accepted: 01/09/2019] [Indexed: 12/28/2022]
Abstract
BACKGROUND Filaggrin (Flg) and hornerin (Hrnr) share similar structural and functional features. Both proteins have been implicated as essential proteins for skin barrier maintenance. Loss-of-function mutations of these genes constitute a risk factor for atopic dermatitis and eczema-related asthma. Furthermore, both FLG and HRNR protein levels are downregulated in patients with atopic dermatitis. Thus, mice deficient for Flg and Hrnr provide a novel model to study skin barrier impairment and the susceptibility for cutaneous inflammation. METHODS By using appropriate targeting vectors and breeding strategies, we established a homozygous FlgHrnr double-deficient (FlgHrnr-/- ) mouse model lacking both genes including the intergenomic sequence. RESULTS Neonates appeared normal, but developed a transient scaly phenotype with overall flaky appearance, but no overt skin phenotype in adulthood, thereby reflecting a subclinical barrier defect seen in humans. Structurally, FlgHrnr-/- mice displayed a markedly reduced granular layer and a condensed cornified layer. Functionally, FlgHrnr-/- mice showed permeability abnormalities and metabolic aberrations regarding the production of natural moisturizing factors (NMFs) in the stratum corneum. Surprisingly, although the immune system revealed no aberrations under steady-state conditions, FlgHrnr-/- mice are predisposed to mount an allergic contact dermatitis, especially at hapten threshold levels eliciting allergic reactions. CONCLUSIONS Together, our FlgHrnr-/- mouse model nicely reflects the epicutaneous sensitization susceptibilities and inflammatory reactions to environmental insults in humans with impaired skin barrier functions.
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Affiliation(s)
- Sebastian Rahrig
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
| | - Judith M. Dettmann
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
| | - Birka Brauns
- Department of Dermatology and Venereology University Medical Center Rostock Germany
| | - Verena N. Lorenz
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
| | - Timo Buhl
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
| | - Sanja Kezic
- Academic Medical Center Coronel Institute of Occupational Health Amsterdam the Netherlands
| | - Peter M. Elias
- Department of Dermatology University of California San Francisco California
| | - Stephan Weidinger
- Department of Dermatology, Venereology and Allergy University Hospital Schleswig‐Holstein Kiel Germany
| | - Martin Mempel
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
- Lower Saxony Institute of Occupational Dermatology University Medical Center Göttingen and University of Osnabrück Göttingen Germany
| | - Michael P. Schön
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
- Lower Saxony Institute of Occupational Dermatology University Medical Center Göttingen and University of Osnabrück Göttingen Germany
| | - Andrea Braun
- Department of Dermatology, Venereology, and Allergology University Medical Center, Georg August University Göttingen Germany
- Lower Saxony Institute of Occupational Dermatology University Medical Center Göttingen and University of Osnabrück Göttingen Germany
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19
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Brand RM, Wipf P, Durham A, Epperly MW, Greenberger JS, Falo LD. Targeting Mitochondrial Oxidative Stress to Mitigate UV-Induced Skin Damage. Front Pharmacol 2018; 9:920. [PMID: 30177881 PMCID: PMC6110189 DOI: 10.3389/fphar.2018.00920] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 07/26/2018] [Indexed: 12/16/2022] Open
Abstract
Unmitigated UV radiation (UVR) induces skin photoaging and multiple forms of cutaneous carcinoma by complex pathways that include those mediated by UV-induced reactive oxygen species (ROS). Upon UVR exposure, a cascade of events is induced that overwhelms the skin’s natural antioxidant defenses and results in DNA damage, intracellular lipid and protein peroxidation, and the dysregulation of pathways that modulate inflammatory and apoptotic responses. To this end, natural products with potent antioxidant properties have been developed to prevent, mitigate, or reverse this damage with varying degrees of success. Mitochondria are particularly susceptible to ROS and subsequent DNA damage as they are a major intracellular source of oxidants. Therefore, the development of mitochondrially targeted agents to mitigate mitochondrial oxidative stress and resulting DNA damage is a logical approach to prevent and treat UV-induced skin damage. We summarize evidence that some existing natural products may reduce mitochondrial oxidative stress and support for synthetically generated mitochondrial targeted cyclic nitroxides as potential alternatives for the prevention and mitigation of UVR-induced skin damage.
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Affiliation(s)
- Rhonda M Brand
- Department of Dermatology, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Peter Wipf
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, United States.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Austin Durham
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, United States
| | - Michael W Epperly
- Department of Radiation Oncology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Joel S Greenberger
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Radiation Oncology, University of Pittsburgh, Pittsburgh, PA, United States.,UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA, United States
| | - Louis D Falo
- Department of Dermatology, University of Pittsburgh, Pittsburgh, PA, United States.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, United States.,UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States.,Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, PA, United States
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20
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Simonsen S, Bonefeld CM, Thyssen JP, Christiansen AT, Geisler C, Skov L. No difference in ultraviolet B-induced changes in antigen-presenting cells and cytokines between patients with and without loss-of-function mutations in FLG. Br J Dermatol 2018; 179:205-207. [PMID: 29377073 DOI: 10.1111/bjd.16394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S Simonsen
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Kildegårdsvej 28, 2900, Hellerup, Denmark
| | - C M Bonefeld
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - J P Thyssen
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Kildegårdsvej 28, 2900, Hellerup, Denmark
| | - A T Christiansen
- Department of Ophthalmology, Rigshospitalet, University of Copenhagen, Denmark
| | - C Geisler
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - L Skov
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Kildegårdsvej 28, 2900, Hellerup, Denmark
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