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Anderson G, Borooah S, Megaw R, Bagnaninchi P, Weller R, McLeod A, Dhillon B. UVR and RPE - The Good, the Bad and the degenerate Macula. Prog Retin Eye Res 2023; 100:101233. [PMID: 38135244 DOI: 10.1016/j.preteyeres.2023.101233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 12/15/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023]
Abstract
Ultraviolet Radiation (UVR) has a well-established causative influence within the aetiology of conditions of the skin and the anterior segment of the eye. However, a grounded assessment of the role of UVR within conditions of the retina has been hampered by a historical lack of quantitative, and spectrally resolved, assessment of how UVR impacts upon the retina in terms congruent with contemporary theories of ageing. In this review, we sought to summarise the key findings of research investigating the connection between UVR exposure in retinal cytopathology while identifying necessary avenues for future research which can deliver a deeper understanding of UVR's place within the retinal risk landscape.
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Affiliation(s)
- Graham Anderson
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh BioQuarter, EH16 4UU, UK
| | - Shyamanga Borooah
- Viterbi Family Department of Ophthalmology, Shiley Eye Institute, UC San Diego, CA, 92093-0946, USA
| | - Roly Megaw
- Institute of Genetics and Cancer, University of Edinburgh, Western General Hospital, EH4 2XU, UK; Department of Clinical Ophthalmology, National Health Service Scotland, Edinburgh, EH3 9HA, UK
| | - Pierre Bagnaninchi
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh BioQuarter, EH16 4UU, UK; Robert O Curle Eyelab, Instute for Regeneration and Repair, Edinburgh BioQuarter, 4-5 Little France Drive, Edinburgh, EH16 4UU, UK
| | - Richard Weller
- Centre for Inflammation Research, University of Edinburgh, Edinburgh BioQuarter, EH16 4TJ, UK
| | - Andrew McLeod
- School of GeoSciences, University of Edinburgh, Crew Building, King's Buildings, EH9 3FF, UK
| | - Baljean Dhillon
- Department of Clinical Ophthalmology, National Health Service Scotland, Edinburgh, EH3 9HA, UK; Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh BioQuarter, EH16 4SB, UK; Robert O Curle Eyelab, Instute for Regeneration and Repair, Edinburgh BioQuarter, 4-5 Little France Drive, Edinburgh, EH16 4UU, UK.
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2
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Weller RB, Macintyre IM, Melville V, Farrugia M, Feelisch M, Webb DJ. The effect of daily UVA phototherapy for 2 weeks on clinic and 24-h blood pressure in individuals with mild hypertension. J Hum Hypertens 2022:10.1038/s41371-022-00729-2. [PMID: 35931819 DOI: 10.1038/s41371-022-00729-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 06/21/2022] [Accepted: 07/13/2022] [Indexed: 11/09/2022]
Abstract
Latitude and season determine exposure to ultraviolet radiation and correlate with population blood pressure. Evidence for Vitamin D causing this relationship is inconsistent, and temperature changes are only partly responsible for BP variation. In healthy individuals, a single irradiation with 20 J/cm2 UVA mobilises NO from cutaneous stores to the circulation, causes arterial vasodilatation, and elicits a transient fall in BP. We, therefore, tested whether low-dose daily UVA phototherapy might be an effective treatment for mild hypertension. 13 patients with untreated high-normal or stage 1 hypertension (BP 130-159/85-99 mm Hg), confirmed by 24-h ambulatory blood pressure (ABP), were recruited. Using home phototherapy lamps they were either exposed to 5 J/cm2 full body UVA (320-410 nm) radiation each day for 14 days, or sham-irradiated with lamps filtered to exclude wavelengths <500 nm. After a washout period of 3 ± 1 week, the alternate irradiation was delivered. 24-h ABP was measured on day 0 before either irradiation sequence and on day 14. Clinic BP was recorded on day 0, and within 90 min of irradiation on day 14. There was no effect on 24-h ABP following UVA irradiation. Clinic BP shortly after irradiation fell with UVA (-8.0 ± 2.9/-3.8 ± 1.1 mm Hg p = 0.034/0.029) but not sham irradiation (1.1 ± 3.0/0.9 ± 1.5 mm Hg). Once daily low-dose UVA does not control mildly elevated BP although it produces a transient fall shortly after irradiation. More frequent exposure to UVA might be effective. Alternatively, UVB, which photo-releases more NO from skin, could be tried.
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Affiliation(s)
- Richard B Weller
- Centre for Inflammation Research and Edinburgh Skin Network, University of Edinburgh, Edinburgh, UK.
| | - Iain M Macintyre
- Department of Nephrology, Royal Infirmary of Edinburgh, Edinburgh, UK.,University Clinical Research Centre, Western General Hospital, Edinburgh, UK
| | - Vanessa Melville
- University Clinical Research Centre, Western General Hospital, Edinburgh, UK
| | - Michael Farrugia
- Department of Dermatology, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - Martin Feelisch
- Clinical & Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - David J Webb
- University Clinical Research Centre, Western General Hospital, Edinburgh, UK.,Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
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3
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Hart PH, Norval M. More Than Effects in Skin: Ultraviolet Radiation-Induced Changes in Immune Cells in Human Blood. Front Immunol 2021; 12:694086. [PMID: 34177957 PMCID: PMC8222718 DOI: 10.3389/fimmu.2021.694086] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 05/25/2021] [Indexed: 12/11/2022] Open
Abstract
Cells of the skin and circulation are in constant two-way communication. Following exposure of humans to sunlight or to phototherapy, there are alterations in the number, phenotype and function of circulating blood cells. In this review, only data obtained from human studies are considered, with changes induced by UV radiation (UVR) exposure described for phagocytic leukocytes and peripheral blood mononuclear cells plus their component T and B cells, natural killer cells and dendritic cells. These immune modulations illustrate the potential of UVR to have therapeutic effects beyond the skin, and that sunlight exposure is an important environmental influence on human health.
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Affiliation(s)
- Prue H Hart
- Telethon Kids Institute, University of Western Australia, Perth, WA, Australia
| | - Mary Norval
- Biomedical Sciences, University of Edinburgh Medical School, Edinburgh, United Kingdom
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4
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Jones CL, Degasperi A, Grandi V, Amarante TD, Mitchell TJ, Nik-Zainal S, Whittaker SJ. Spectrum of mutational signatures in T-cell lymphoma reveals a key role for UV radiation in cutaneous T-cell lymphoma. Sci Rep 2021; 11:3962. [PMID: 33597573 PMCID: PMC7889847 DOI: 10.1038/s41598-021-83352-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 01/27/2021] [Indexed: 12/02/2022] Open
Abstract
T-cell non-Hodgkin's lymphomas develop following transformation of tissue resident T-cells. We performed a meta-analysis of whole exome sequencing data from 403 patients with eight subtypes of T-cell non-Hodgkin's lymphoma to identify mutational signatures and associated recurrent gene mutations. Signature 1, indicative of age-related deamination, was prevalent across all T-cell lymphomas, reflecting the derivation of these malignancies from memory T-cells. Adult T-cell leukemia-lymphoma was specifically associated with signature 17, which was found to correlate with the IRF4 K59R mutation that is exclusive to Adult T-cell leukemia-lymphoma. Signature 7, implicating UV exposure was uniquely identified in cutaneous T-cell lymphoma (CTCL), contributing 52% of the mutational burden in mycosis fungoides and 23% in Sezary syndrome. Importantly this UV signature was observed in CD4 + T-cells isolated from the blood of Sezary syndrome patients suggesting extensive re-circulation of these T-cells through skin and blood. Analysis of non-Hodgkin's T-cell lymphoma cases submitted to the national 100,000 WGS project confirmed that signature 7 was only identified in CTCL strongly implicating UV radiation in the pathogenesis of cutaneous T-cell lymphoma.
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MESH Headings
- CD4-Positive T-Lymphocytes/metabolism
- Databases, Genetic
- Humans
- Interferon Regulatory Factors
- Lymphoma, T-Cell/etiology
- Lymphoma, T-Cell/genetics
- Lymphoma, T-Cell/metabolism
- Lymphoma, T-Cell/pathology
- Lymphoma, T-Cell, Cutaneous/etiology
- Lymphoma, T-Cell, Cutaneous/genetics
- Lymphoma, T-Cell, Cutaneous/pathology
- Mutation/genetics
- Sezary Syndrome/blood
- Skin Neoplasms/pathology
- Ultraviolet Rays/adverse effects
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Affiliation(s)
- Christine L Jones
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, SE1 9RT, UK
| | - Andrea Degasperi
- MRC Cancer Unit, Hutchison/MRC Research Centre, University of Cambridge, Box 197, Cambridge Biomedical Campus, Cambridge, CB2 0XZ, UK
- Academic Laboratory of Medical Genetics, Lv 6 Addenbrooke's Treatment Centre, Addenbrooke's Hospital, Box 238, Cambridge, CB2 0QQ, UK
| | - Vieri Grandi
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, SE1 9RT, UK
| | - Tauanne D Amarante
- MRC Cancer Unit, Hutchison/MRC Research Centre, University of Cambridge, Box 197, Cambridge Biomedical Campus, Cambridge, CB2 0XZ, UK
- Academic Laboratory of Medical Genetics, Lv 6 Addenbrooke's Treatment Centre, Addenbrooke's Hospital, Box 238, Cambridge, CB2 0QQ, UK
| | - Tracey J Mitchell
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, SE1 9RT, UK
| | - Serena Nik-Zainal
- MRC Cancer Unit, Hutchison/MRC Research Centre, University of Cambridge, Box 197, Cambridge Biomedical Campus, Cambridge, CB2 0XZ, UK
- Academic Laboratory of Medical Genetics, Lv 6 Addenbrooke's Treatment Centre, Addenbrooke's Hospital, Box 238, Cambridge, CB2 0QQ, UK
| | - Sean J Whittaker
- St. John's Institute of Dermatology, School of Basic and Medical Biosciences, King's College London, Guy's Hospital, London, SE1 9RT, UK.
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Alfredsson L, Armstrong BK, Butterfield DA, Chowdhury R, de Gruijl FR, Feelisch M, Garland CF, Hart PH, Hoel DG, Jacobsen R, Lindqvist PG, Llewellyn DJ, Tiemeier H, Weller RB, Young AR. Insufficient Sun Exposure Has Become a Real Public Health Problem. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E5014. [PMID: 32668607 PMCID: PMC7400257 DOI: 10.3390/ijerph17145014] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/01/2020] [Accepted: 07/04/2020] [Indexed: 12/13/2022]
Abstract
This article aims to alert the medical community and public health authorities to accumulating evidence on health benefits from sun exposure, which suggests that insufficient sun exposure is a significant public health problem. Studies in the past decade indicate that insufficient sun exposure may be responsible for 340,000 deaths in the United States and 480,000 deaths in Europe per year, and an increased incidence of breast cancer, colorectal cancer, hypertension, cardiovascular disease, metabolic syndrome, multiple sclerosis, Alzheimer's disease, autism, asthma, type 1 diabetes and myopia. Vitamin D has long been considered the principal mediator of beneficial effects of sun exposure. However, oral vitamin D supplementation has not been convincingly shown to prevent the above conditions; thus, serum 25(OH)D as an indicator of vitamin D status may be a proxy for and not a mediator of beneficial effects of sun exposure. New candidate mechanisms include the release of nitric oxide from the skin and direct effects of ultraviolet radiation (UVR) on peripheral blood cells. Collectively, this evidence indicates it would be wise for people living outside the tropics to ensure they expose their skin sufficiently to the sun. To minimize the harms of excessive sun exposure, great care must be taken to avoid sunburn, and sun exposure during high ambient UVR seasons should be obtained incrementally at not more than 5-30 min a day (depending on skin type and UV index), in season-appropriate clothing and with eyes closed or protected by sunglasses that filter UVR.
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Affiliation(s)
- Lars Alfredsson
- Institute of Environmental Medicine, Karolinska Institute, 171 77 Stockholm, Sweden;
| | - Bruce K. Armstrong
- School of Population and Global Health, The University of Western Australia, Perth 6009, Australia;
| | - D. Allan Butterfield
- Department of Chemistry and Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40506, USA;
| | - Rajiv Chowdhury
- Cardiovascular Epidemiology Unit, Department of Public Health and Primary Care, University of Cambridge, Cambridge CB1 8RN, UK;
| | - Frank R. de Gruijl
- Department of Dermatology, Leiden University Medical Centre, 2333 ZA Leiden, The Netherlands;
| | - Martin Feelisch
- Clinical & Experimental Sciences, University of Southampton Medical School and University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK;
| | - Cedric F. Garland
- Division of Epidemiology, Department of Family Medicine and Public Health, University of California San Diego School of Medicine, La Jolla, CA 92093, USA;
| | - Prue H. Hart
- Telethon Kids Institute, University of Western Australia, Perth 6872, Australia;
| | - David G. Hoel
- Department of Public Health Sciences, College of Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Ramune Jacobsen
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark;
| | - Pelle G. Lindqvist
- Department of Clinical Science and Education, Karolinska Institute, 171 77 Stockholm, Sweden;
| | - David J. Llewellyn
- College of Medicine and Health, University of Exeter Medical School, Exeter EX1 2LU, UK;
| | - Henning Tiemeier
- Department of Social and Behavioral Science, Harvard T.H. Chan School of Public Health, Harvard University, Cambridge, MA 02115, USA;
| | - Richard B. Weller
- Centre for Inflammation Research, University of Edinburgh, Edinburgh EH16 4SB, UK;
| | - Antony R. Young
- St John’s Institute of Dermatology, King’s College London, London SE1 9RT, UK;
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Hart PH. The changing transcriptome in human skin following in vivo exposure to erythemal solar-simulated ultraviolet radiation. Br J Dermatol 2019; 182:1328-1329. [PMID: 31792948 DOI: 10.1111/bjd.18683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- P H Hart
- Telethon Kids Institute, University of Western Australia, Perth, WA, Australia
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7
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Bustamante M, Hernandez-Ferrer C, Tewari A, Sarria Y, Harrison GI, Puigdecanet E, Nonell L, Kang W, Friedländer MR, Estivill X, González JR, Nieuwenhuijsen M, Young AR. Dose and time effects of solar-simulated ultraviolet radiation on the in vivo human skin transcriptome. Br J Dermatol 2019; 182:1458-1468. [PMID: 31529490 PMCID: PMC7318624 DOI: 10.1111/bjd.18527] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2019] [Indexed: 12/18/2022]
Abstract
Background Terrestrial ultraviolet (UV) radiation causes erythema, oxidative stress, DNA mutations and skin cancer. Skin can adapt to these adverse effects by DNA repair, apoptosis, keratinization and tanning. Objectives To investigate the transcriptional response to fluorescent solar‐simulated radiation (FSSR) in sun‐sensitive human skin in vivo. Methods Seven healthy male volunteers were exposed to 0, 3 and 6 standard erythemal doses (SED). Skin biopsies were taken at 6 h and 24 h after exposure. Gene and microRNA expression were quantified with next generation sequencing. A set of candidate genes was validated by quantitative polymerase chain reaction (qPCR); and wavelength dependence was examined in other volunteers through microarrays. Results The number of differentially expressed genes increased with FSSR dose and decreased between 6 and 24 h. Six hours after 6 SED, 4071 genes were differentially expressed, but only 16 genes were affected at 24 h after 3 SED. Genes for apoptosis and keratinization were prominent at 6 h, whereas inflammation and immunoregulation genes were predominant at 24 h. Validation by qPCR confirmed the altered expression of nine genes detected under all conditions; genes related to DNA repair and apoptosis; immunity and inflammation; pigmentation; and vitamin D synthesis. In general, candidate genes also responded to UVA1 (340–400 nm) and/or UVB (300 nm), but with variations in wavelength dependence and peak expression time. Only four microRNAs were differentially expressed by FSSR. Conclusions The UV radiation doses of this acute study are readily achieved daily during holidays in the sun, suggesting that the skin transcriptional profile of ‘typical’ holiday makers is markedly deregulated. What's already known about this topic? The skin's transcriptional profile underpins its adverse (i.e. inflammation) and adaptive molecular, cellular and clinical responses (i.e. tanning, hyperkeratosis) to solar ultraviolet radiation. Few studies have assessed microRNA and gene expression in vivo in humans, and there is a lack of information on dose, time and waveband effects.
What does this study add? Acute doses of fluorescent solar‐simulated radiation (FSSR), of similar magnitude to those received daily in holiday situations, markedly altered the skin's transcriptional profiles. The number of differentially expressed genes was FSSR‐dose‐dependent, reached a peak at 6 h and returned to baseline at 24 h. The initial transcriptional response involved apoptosis and keratinization, followed by inflammation and immune modulation. In these conditions, microRNA expression was less affected than gene expression.
Linked Comment:Hart. Br J Dermatol 2020; 182:1328–1329. Plain language summary available online Respond to this article
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Affiliation(s)
- M Bustamante
- ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain.,Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - C Hernandez-Ferrer
- ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.,Computational Health Informatics Program (CHIP), Boston Children's Hospital, Boston, MA, U.S.A
| | - A Tewari
- King's College London, St John's Institute of Dermatology, London, U.K
| | - Y Sarria
- ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - G I Harrison
- King's College London, St John's Institute of Dermatology, London, U.K
| | - E Puigdecanet
- Servei d'Anàlisi de Microarrays, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - L Nonell
- Servei d'Anàlisi de Microarrays, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - W Kang
- Science for Life Laboratory, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - M R Friedländer
- Science for Life Laboratory, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - X Estivill
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.,Genetics Program, Sidra Medical Center, Al Rayyan Municipality, Qatar
| | - J R González
- ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - M Nieuwenhuijsen
- ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - A R Young
- King's College London, St John's Institute of Dermatology, London, U.K
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8
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Bustamante M, Wucher V, Young AR. Importance of considering circadian rhythm in the design of in vivo transcriptional studies of acute effects of environmental exposures: Commentary to "The acute effects of ultraviolet radiation on the blood transcriptome are independent of plasma 25OHD3" published in Environmental Research 2017 Nov:159:239-248. doi: 10.1016/j.envres.2017.07.045. ENVIRONMENTAL RESEARCH 2019; 178:108691. [PMID: 31520826 DOI: 10.1016/j.envres.2019.108691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/23/2019] [Accepted: 08/23/2019] [Indexed: 06/10/2023]
Affiliation(s)
- Mariona Bustamante
- ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain; Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.
| | - Valentin Wucher
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Antony R Young
- King's College London (KCL), St John's Institute of Dermatology, London, UK. mailto:
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Scragg R, Rahman J, Thornley S. Association of sun and UV exposure with blood pressure and cardiovascular disease: A systematic review. J Steroid Biochem Mol Biol 2019; 187:68-75. [PMID: 30412763 DOI: 10.1016/j.jsbmb.2018.11.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 11/05/2018] [Indexed: 12/24/2022]
Abstract
BACKGROUND Ecological studies show that sun or ultraviolet (UV) exposure have inverse associations with blood pressure (BP) and cardiovascular disease (CVD). Although sunlight is the primary source of vitamin D, recent meta-analyses of clinical trials have not reported a beneficial effect from vitamin D supplementation on BP or CVD. Sunlight may have beneficial effects independent of vitamin D. We carried out a systematic review to appraise the extent and quality of the evidence from human studies. METHODS Observational and interventional studies that measured sun or UV exposure, along with BP or CVD, were selected after searching databases. RESULTS Identified studies could not be combined quantitatively in meta-analysis because of different exposure measures. Solar exposure was inversely associated with BP in 3 out of 4 cross-sectional publications, and with CVD and/or total mortality in 5 out of 6 publications of cohort studies. Two of the cohort studies reported inverse associations between sun exposure and CVD, after adjusting for serum 25-hydroxyvitamin D. Five clinical trials with an appropriate control group were identified, the outcome being BP. Two trials compared UVB with UVA (as control), with only one finding a significant reduction in BP (after 6 weeks). Three trials compared short-term UVA exposure (<30 min) with placebo (or crossover control), of which two reported short-term lowering of BP. CONCLUSION This review has identified a small body of evidence that suggests sun exposure protects against high BP and CVD, but further research is required to determine if this is independent of vitamin D.
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Affiliation(s)
- Robert Scragg
- School of Population Health, University of Auckland, Auckland, New Zealand.
| | - Juma Rahman
- School of Population Health, University of Auckland, Auckland, New Zealand
| | - Simon Thornley
- School of Population Health, University of Auckland, Auckland, New Zealand
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10
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Hart PH, Norval M, Byrne SN, Rhodes LE. Exposure to Ultraviolet Radiation in the Modulation of Human Diseases. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2018; 14:55-81. [PMID: 30125148 DOI: 10.1146/annurev-pathmechdis-012418-012809] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This review focuses primarily on the beneficial effects for human health of exposure to ultraviolet radiation (UVR). UVR stimulates anti-inflammatory and immunosuppressive pathways in skin that modulate psoriasis, atopic dermatitis, and vitiligo; suppresses cutaneous lesions of graft-versus-host disease; and regulates some infection and vaccination outcomes. While polymorphic light eruption and the cutaneous photosensitivity of systemic lupus erythematosus are triggered by UVR, polymorphic light eruption also frequently benefits from UVR-induced immunomodulation. For systemic diseases such as multiple sclerosis, type 1 diabetes, asthma, schizophrenia, autism, and cardiovascular disease, any positive consequences of UVR exposure are more speculative, but could occur through the actions of UVR-induced regulatory cells and mediators, including 1,25-dihydroxy vitamin D3, interleukin-10, and nitric oxide. Reduced UVR exposure is a risk factor for the development of several inflammatory, allergic, and autoimmune conditions, including diseases initiated in early life. This suggests that UVR-induced molecules can regulate cell maturation in developing organs.
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Affiliation(s)
- Prue H Hart
- Telethon Kids Institute, University of Western Australia, Perth, Western Australia 6008, Australia;
| | - Mary Norval
- University of Edinburgh Medical School, Edinburgh EH8 9AG, United Kingdom;
| | - Scott N Byrne
- Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales 2006, Australia; .,Westmead Institute for Medical Research, Westmead, New South Wales 2145, Australia
| | - Lesley E Rhodes
- Centre for Dermatology Research, Division of Musculoskeletal and Dermatological Sciences, School of Biological Sciences, and Faculty of Biology, Medicine, and Health, The University of Manchester and Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9PL, United Kingdom;
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11
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Bais F, Luca RM, Bornman JF, Williamson CE, Sulzberger B, Austin AT, Wilson SR, Andrady AL, Bernhard G, McKenzie RL, Aucamp PJ, Madronich S, Neale RE, Yazar S, Young AR, de Gruijl FR, Norval M, Takizawa Y, Barnes PW, Robson TM, Robinson SA, Ballaré CL, Flint SD, Neale PJ, Hylander S, Rose KC, Wängberg SÅ, Häder DP, Worrest RC, Zepp RG, Paul ND, Cory RM, Solomon KR, Longstreth J, Pandey KK, Redhwi HH, Torikai A, Heikkilä AM. Environmental effects of ozone depletion, UV radiation and interactions with climate change: UNEP Environmental Effects Assessment Panel, update 2017. Photochem Photobiol Sci 2018; 17:127-179. [PMID: 29404558 PMCID: PMC6155474 DOI: 10.1039/c7pp90043k] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 12/21/2017] [Indexed: 12/11/2022]
Abstract
The Environmental Effects Assessment Panel (EEAP) is one of three Panels of experts that inform the Parties to the Montreal Protocol. The EEAP focuses on the effects of UV radiation on human health, terrestrial and aquatic ecosystems, air quality, and materials, as well as on the interactive effects of UV radiation and global climate change. When considering the effects of climate change, it has become clear that processes resulting in changes in stratospheric ozone are more complex than previously held. Because of the Montreal Protocol, there are now indications of the beginnings of a recovery of stratospheric ozone, although the time required to reach levels like those before the 1960s is still uncertain, particularly as the effects of stratospheric ozone on climate change and vice versa, are not yet fully understood. Some regions will likely receive enhanced levels of UV radiation, while other areas will likely experience a reduction in UV radiation as ozone- and climate-driven changes affect the amounts of UV radiation reaching the Earth's surface. Like the other Panels, the EEAP produces detailed Quadrennial Reports every four years; the most recent was published as a series of seven papers in 2015 (Photochem. Photobiol. Sci., 2015, 14, 1-184). In the years in between, the EEAP produces less detailed and shorter Update Reports of recent and relevant scientific findings. The most recent of these was for 2016 (Photochem. Photobiol. Sci., 2017, 16, 107-145). The present 2017 Update Report assesses some of the highlights and new insights about the interactive nature of the direct and indirect effects of UV radiation, atmospheric processes, and climate change. A full 2018 Quadrennial Assessment, will be made available in 2018/2019.
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Affiliation(s)
- F. Bais
- Aristotle Univ. of Thessaloniki, Laboratory of Atmospheric Physics, Thessaloniki, Greece
| | - R. M. Luca
- National Centre for Epidemiology and Population Health, Australian National Univ., Canberra, Australia
| | - J. F. Bornman
- Curtin Univ., Curtin Business School, Perth, Australia
| | | | - B. Sulzberger
- Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - A. T. Austin
- Univ. of Buenos Aires, Faculty of Agronomy and IFEVA-CONICET, Buenos Aires, Argentina
| | - S. R. Wilson
- School of Chemistry, Centre for Atmospheric Chemistry, Univ. of Wollongong, Wollongong, Australia
| | - A. L. Andrady
- Department of Chemical and Biomolecular Engineering, North Carolina State Univ., Raleigh, NC, USA
| | - G. Bernhard
- Biospherical Instruments Inc., San Diego, CA, USA
| | | | - P. J. Aucamp
- Ptersa Environmental Consultants, Faerie Glen, South Africa
| | - S. Madronich
- National Center for Atmospheric Research, Boulder, Colorado, USA
| | - R. E. Neale
- Queensland Institute of Medical Research, Royal Brisbane Hospital, Brisbane, Australia
| | - S. Yazar
- Univ. of Western Australia, Centre for Ophthalmology and Visual Science, Lions Eye Institute, Perth, Australia
| | | | - F. R. de Gruijl
- Department of Dermatology, Leiden Univ. Medical Centre, Leiden, The Netherlands
| | - M. Norval
- Univ. of Edinburgh Medical School, UK
| | - Y. Takizawa
- Akita Univ. School of Medicine, National Institute for Minamata Disease, Nakadai, Itabashiku, Tokyo, Japan
| | - P. W. Barnes
- Department of Biological Sciences and Environment Program, Loyola Univ., New Orleans, USA
| | - T. M. Robson
- Research Programme in Organismal and Evolutionary Biology, Viikki Plant Science Centre, Univ. of Helsinki, Finland
| | - S. A. Robinson
- Centre for Sustainable Ecosystem Solutions, School of Biological Sciences, Univ. of Wollongong, Wollongong, NSW 2522, Australia
| | - C. L. Ballaré
- Univ. of Buenos Aires, Faculty of Agronomy and IFEVA-CONICET, Buenos Aires, Argentina
| | - S. D. Flint
- Dept of Forest, Rangeland and Fire Sciences, Univ. of Idaho, Moscow, ID, USA
| | - P. J. Neale
- Smithsonian Environmental Research Center, Edgewater, Maryland, USA
| | - S. Hylander
- Centre for Ecology and Evolution in Microbial model Systems, Linnaeus Univ., Kalmar, Sweden
| | - K. C. Rose
- Dept of Biological Sciences, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - S.-Å. Wängberg
- Dept Marine Sciences, Univ. of Gothenburg, Göteborg, Sweden
| | - D.-P. Häder
- Friedrich-Alexander Univ. Erlangen-Nürnberg, Dept of Biology, Möhrendorf, Germany
| | - R. C. Worrest
- CIESIN, Columbia Univ., New Hartford, Connecticut, USA
| | - R. G. Zepp
- United States Environmental Protection Agency, Athens, Georgia, USA
| | - N. D. Paul
- Lanter Environment Centre, Lanter Univ., LA1 4YQ, UK
| | - R. M. Cory
- Earth and Environmental Sciences, Univ. of Michigan, Ann Arbor, MI, USA
| | - K. R. Solomon
- Centre for Toxicology, School of Environmental Sciences, Univ. of Guelph, Guelph, ON, Canada
| | - J. Longstreth
- The Institute for Global Risk Research, Bethesda, MD, USA
| | - K. K. Pandey
- Institute of Wood Science and Technology, Bengaluru, India
| | - H. H. Redhwi
- Chemical Engineering Dept, King Fahd Univ. of Petroleum and Minerals, Dhahran, Saudi Arabia
| | - A. Torikai
- Materials Life Society of Japan, Kayabacho Chuo-ku, Tokyo, Japan
| | - A. M. Heikkilä
- Finnish Meteorological Institute R&D/Climate Research, Helsinki, Finland
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