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Sakamoto K, Miyamori T, Someya Y, Nagao M, Ishihara Y, Kobayashi Y, Shimasaki Y, Imai J, Ono T, Ikeda H, Tashima K, Yoshimura M. Vitamin D levels and bone mineral density of middle-aged premenopausal female football and volleyball players in Japan: a cross-sectional study. BMC Sports Sci Med Rehabil 2024; 16:147. [PMID: 38956731 PMCID: PMC11221148 DOI: 10.1186/s13102-024-00938-x] [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: 04/15/2024] [Accepted: 06/28/2024] [Indexed: 07/04/2024]
Abstract
BACKGROUND The number of football teams in senior categories has increased. As outdoor sports entail players being exposed to sunlight, playing football may contribute to maintaining vitamin D stores and body mineral density while preventing osteoporosis. This study aimed to determine the bone mineral density and vitamin D levels in middle-aged premenopausal female football players. METHODS Participants were premenopausal females in their 40s. We evaluated bone mineral density of the second to the fourth lumbar vertebrae and femoral neck, serum 25-hydroxy vitamin D (25-OHD) levels, which is an indicator of vitamin D stores, and body composition. In addition, we administered a questionnaire survey on exercise habits and lifestyle. Ninety-two participants were categorised into three groups: the football group (n = 27), volleyball group (n = 40), and non-exercise group (n = 25). RESULTS Bone mineral density was higher in the football and volleyball groups than in the non-exercise group (P < 0.01). The volleyball group had a significantly higher bone mineral density of the lumbar spine and femoral neck than the non-exercise group (P < 0.01). The football group had a significantly higher bone mineral density of the femoral neck than the non-exercise group (P < 0.01). Although the football group had played fewer years than the volleyball group (P < 0.01), serum 25-OHD levels were the highest in the football group and were significantly higher than those in the volleyball and non-exercise groups (P < 0.01). CONCLUSIONS Middle-aged premenopausal football players had higher body vitamin D levels and bone mineral densities than non-active females. These results suggest that playing football may contribute to the prevention of osteoporosis. TRIAL REGISTRATION UMIN Clinical Trials Registry UMIN000054235. 2024/04/23. Retrospectively registered.
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Affiliation(s)
- Kimiko Sakamoto
- Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan
| | - Takayuki Miyamori
- Department of Physical Therapy, Faculty of Health Science, Juntendo University, Tokyo, Japan.
- Graduate School of Health Science, Juntendo University, Tokyo, Japan.
- Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan.
| | - Yuki Someya
- Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan
- Department of Sports Science, Faculty of Health and Sports Science, Juntendo University, Chiba, Japan
| | - Masashi Nagao
- Department of Orthopedic Surgery, Faculty of Medicine, Juntendo University, Tokyo, Japan
- Medical Technology Innovation Center, Juntendo University, Tokyo, Japan
| | - Yoshihiko Ishihara
- School of Science and Technology for Future Life, Tokyo Denki University, Tokyo, Japan
| | | | - Yu Shimasaki
- Department of Sports Science, Faculty of Health and Sports Science, Juntendo University, Chiba, Japan
| | - Junko Imai
- Japan Football Association, Tokyo, Japan
| | | | - Hiroshi Ikeda
- Department of Physical Therapy, Faculty of Health Science, Juntendo University, Tokyo, Japan
- Graduate School of Health Science, Juntendo University, Tokyo, Japan
- Department of Orthopedic Surgery, Faculty of Medicine, Juntendo University, Tokyo, Japan
- Japan Football Association, Tokyo, Japan
| | | | - Masafumi Yoshimura
- Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan
- Department of Sports Science, Faculty of Health and Sports Science, Juntendo University, Chiba, Japan
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Hartmann D, Valenzuela F. Sunproofing from within: A deep dive into oral photoprotection strategies in dermatology. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2024; 40:e12985. [PMID: 38845468 DOI: 10.1111/phpp.12985] [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: 01/17/2024] [Revised: 05/18/2024] [Accepted: 05/28/2024] [Indexed: 06/12/2024]
Abstract
BACKGROUND Photoprotection is the first measure in the prevention and treatment of the deleterious effects that sunlight can cause on the skin. It is well known that prolonged exposure to solar radiation leads to acute and chronic complications, such as erythema, accelerated skin aging, proinflammatory and procarcinogenic effects, and eye damage, among others. METHODS A better understanding of the molecules that can protect against ultraviolet radiation and their effects will lead to improvements in skin health. RESULTS Most of these effects of the sunlight are modulated by oxidative stress and proinflammatory mechanisms, therefore, the supplementation of substances that can regulate and neutralize reactive oxygen species would be beneficial for skin protection. Current evidence indicates that systemic photoprotection should be used as an adjunctive measure to topical photoprotection. CONCLUSION Oral photoprotectors are a promising option in improving protection against damage induced by UVR, as they contain active ingredients that increase the antioxidant effects of the body, complementing other photoprotection measures. We present a review of oral photoprotectors and their effects.
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Affiliation(s)
- Dan Hartmann
- Faculty of Medicine, Universidad Finis Terrae, Santiago, Chile
- Centro Internacional de Estudios Clínicos (CIEC), Probity Medical Research, Santiago, Chile
| | - Fernando Valenzuela
- Centro Internacional de Estudios Clínicos (CIEC), Probity Medical Research, Santiago, Chile
- Department of Dermatology, Universidad de Chile, Santiago, Chile
- Department of Dermatology, Clínica Universidad de los Andes, Chile, Santiago, Chile
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Pellacani G, Lim HW, Stockfleth E, Sibaud V, Brugués AO, Saint Aroman M. Photoprotection: Current developments and controversies. J Eur Acad Dermatol Venereol 2024; 38 Suppl 5:12-20. [PMID: 38924160 DOI: 10.1111/jdv.19677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 11/16/2023] [Indexed: 06/28/2024]
Abstract
This review aimed at summarizing some of the key points that were discussed during the photoprotection session at the International Forum of Dermatology in 2022. This international conference was designed to address prominent topics of clinical dermatology in a holistic way, allowing to articulate multiple viewpoints. Therefore, this review does not claim to be exhaustive, but is instead intended to give an overview of recent developments and ongoing controversies in the field of photoprotection. Cumulative ultraviolet radiation (UVR) exposure is the major aetiological factor in the development of photoageing, photoimunosuppression and photocarcinogenesis. UVA (320-400 nm) penetrates into the dermis and damages DNA and other intracellular and acellular targets primarily by generating reactive oxygen species (ROS). It is the major contributor to photoageing, characterized by fine and coarse wrinkles, dyspigmentation and loss of elasticity. UVB (290-320 nm) is responsible for sunburns through direct damage to DNA by the formation of 6-4 cyclobutane pyrimidine dimers (CPDs) and pyrimidine 6-4 pyrimidone photoproducts. Both UVA and UVB exposure increase the risk of basal cell carcinoma, squamous cell carcinoma and melanoma. In recent years, visible light (VL; 400-700 nm) has also been implicated in the exacerbation of conditions aggravated by sun exposure such as hyperpigmentation and melasma. Photoprotection is a critical health strategy to reduce the deleterious effects of UVR and VL. Comprehensive photoprotection strategies include staying in the shade when outdoors, wearing photoprotective clothing including a wide-brimmed hat, and sunglasses, and the use of sunscreen. Due to the absorption of UV filters, the safety of sunscreens has been questioned. Newer sunscreens are becoming available with filters with absorption even beyond the UV spectrum, offering enhanced protection compared with older products. Prevention of photocarcinogenesis, sun-induced or sunlight-exacerbated hyperpigmentary conditions and drug-induced photosensitivity is an important reason for adopting comprehensive photoprotection strategies.
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Affiliation(s)
| | - Henry W Lim
- Department of Dermatology, Henry Ford Health, Detroit, Michigan, USA
| | - Eggert Stockfleth
- Klinik für Dermatologie, Venerologie und Allergologie, St. Josef-Hospital, Ruhr-Universität Bochum, Bochum, Germany
| | - Vincent Sibaud
- Department of Oncodermatology, Claudius Regaud Institute and University Cancer Institute Toulouse Oncopole, Toulouse, France
| | - Ariadna Ortiz Brugués
- Department of Oncodermatology, Claudius Regaud Institute and University Cancer Institute Toulouse Oncopole, Toulouse, France
- Laboratoires Dermatologiques Avène, Pierre Fabre Dermo-Cosmétique, Les Cauquillous, Lavaur, France
| | - Markéta Saint Aroman
- Medical Direction Dermo-Cosmétique & Personal Care, Pierre Fabre Group, Toulouse, France
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Mansilla-Polo M, Luque-Luna M, Morgado-Carrasco D. Vitamin D and Skin Cancer: A Controversial Society. Literature Update and Review. ACTAS DERMO-SIFILIOGRAFICAS 2024; 115:679-692. [PMID: 38556198 DOI: 10.1016/j.ad.2024.03.019] [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: 12/22/2023] [Revised: 03/12/2024] [Accepted: 03/17/2024] [Indexed: 04/02/2024] Open
Abstract
Vitamin D (VD) deficiency has been associated with various tumors. However, the association between VD and skin cancer is controversial. Although in non-melanoma skin cancer, adequate or even high levels of VD can be associated with a higher risk of developing tumors, this could be biased by the direct association between sun exposure and VD levels. Regarding melanoma, results are contradictory. Most studies analyzed state that higher levels of VD could reduce the risk of melanoma, be associated with melanomas with better prognosis and with an enhanced antitumor response, and also with fewer adverse events associated with melanoma immunotherapy. However, prospective studies of adequate methodological quality are still needed to assess the association between VD levels and its supplementation and development/prognosis in skin cancer.
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Affiliation(s)
- M Mansilla-Polo
- Servicio de Dermatología, Hospital Universitario y Politécnico La Fe, Valencia, España; Instituto de Investigación Sanitaria (IIS) La Fe, Valencia, España
| | - M Luque-Luna
- Servicio de Dermatología, Hospital Clínic, Universitat de Barcelona, Barcelona, España
| | - D Morgado-Carrasco
- Servicio de Dermatología, Hospital Clínic, Universitat de Barcelona, Barcelona, España; Servicio de Dermatología, Hospital de Figueres, Fundació Salut Empordà, Figueres, Girona, España.
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Malhi K, Mustari A, Singh S, Kumar A, Vignesh P, De D, Handa S, Mahajan R. A photo-distributed rash and eczematous eruptions in two siblings-A diagnostic conundrum. Australas J Dermatol 2024; 65:402-405. [PMID: 38646889 DOI: 10.1111/ajd.14295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 04/23/2024]
Affiliation(s)
- Kittu Malhi
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Akash Mustari
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Sukhdeep Singh
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Anoop Kumar
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Pandiarajan Vignesh
- Department of Paediatrics, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Dipankar De
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Sanjeev Handa
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Rahul Mahajan
- Department of Dermatology, Venereology and Leprology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
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6
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Mansilla-Polo M, Luque-Luna M, Morgado-Carrasco D. [Translated article] Vitamin D and Skin Cancer: A Controversial Society. Literature Update and Review. ACTAS DERMO-SIFILIOGRAFICAS 2024:S0001-7310(24)00438-1. [PMID: 38823772 DOI: 10.1016/j.ad.2024.05.017] [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: 12/22/2023] [Revised: 03/12/2024] [Accepted: 03/17/2024] [Indexed: 06/03/2024] Open
Abstract
Vitamin D (VD) deficiency has been associated with various tumors. However, the association between VD and skin cancer is controversial. Although in non-melanoma skin cancer, adequate or even high levels of VD can be associated with a higher risk of developing tumors, this could be biased by the direct association between sun exposure and VD levels. Regarding melanoma, results are contradictory. Most studies analyzed state that higher levels of VD could reduce the risk of melanoma, be associated with melanomas with better prognosis and with an enhanced antitumor response, and also with fewer adverse events associated with melanoma immunotherapy. However, prospective studies of adequate methodological quality are still needed to assess the association between VD levels and its supplementation and development/prognosis in skin cancer.
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Affiliation(s)
- M Mansilla-Polo
- Servicio de Dermatología, Hospital Universitario y Politécnico La Fe, Valencia, Spain; Instituto de Investigación Sanitaria (IIS) La Fe, Valencia, Spain
| | - M Luque-Luna
- Servicio de Dermatología, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - D Morgado-Carrasco
- Servicio de Dermatología, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain; Servicio de Dermatología, Hospital de Figueres, Fundació Salut Empordà, Figueres, Girona, Spain.
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7
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Breakell T, Kowalski I, Foerster Y, Kramer R, Erdmann M, Berking C, Heppt MV. Ultraviolet Filters: Dissecting Current Facts and Myths. J Clin Med 2024; 13:2986. [PMID: 38792526 PMCID: PMC11121922 DOI: 10.3390/jcm13102986] [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: 04/01/2024] [Revised: 05/11/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024] Open
Abstract
Skin cancer is a global and increasingly prevalent issue, causing significant individual and economic damage. UV filters in sunscreens play a major role in mitigating the risks that solar ultraviolet ra-diation poses to the human organism. While empirically effective, multiple adverse effects of these compounds are discussed in the media and in scientific research. UV filters are blamed for the dis-ruption of endocrine processes and vitamin D synthesis, damaging effects on the environment, induction of acne and neurotoxic and carcinogenic effects. Some of these allegations are based on scientific facts while others are simply arbitrary. This is especially dangerous considering the risks of exposing unprotected skin to the sun. In summary, UV filters approved by the respective governing bodies are safe for human use and their proven skin cancer-preventing properties make them in-dispensable for sensible sun protection habits. Nonetheless, compounds like octocrylene and ben-zophenone-3 that are linked to the harming of marine ecosystems could be omitted from skin care regimens in favor of the myriad of non-toxic UV filters.
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Affiliation(s)
- Thomas Breakell
- Department of Dermatology, Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany; (T.B.); (I.K.); (Y.F.); (R.K.); (M.E.); (C.B.)
- Comprehensive Cancer Center Erlangen-European Metropolitan Area of Nuremberg (CCC ER-EMN) and CCC Alliance WERA, 91054 Erlangen, Germany
- Bavarian Cancer Research Center (BZKF), 91052 Erlangen, Germany
| | - Isabel Kowalski
- Department of Dermatology, Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany; (T.B.); (I.K.); (Y.F.); (R.K.); (M.E.); (C.B.)
- Comprehensive Cancer Center Erlangen-European Metropolitan Area of Nuremberg (CCC ER-EMN) and CCC Alliance WERA, 91054 Erlangen, Germany
- Bavarian Cancer Research Center (BZKF), 91052 Erlangen, Germany
| | - Yannick Foerster
- Department of Dermatology, Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany; (T.B.); (I.K.); (Y.F.); (R.K.); (M.E.); (C.B.)
- Comprehensive Cancer Center Erlangen-European Metropolitan Area of Nuremberg (CCC ER-EMN) and CCC Alliance WERA, 91054 Erlangen, Germany
- Bavarian Cancer Research Center (BZKF), 91052 Erlangen, Germany
- Department of Dermatology and Allergy Biederstein, Technical University (TU) Munich, 80802 Munich, Germany
| | - Rafaela Kramer
- Department of Dermatology, Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany; (T.B.); (I.K.); (Y.F.); (R.K.); (M.E.); (C.B.)
- Comprehensive Cancer Center Erlangen-European Metropolitan Area of Nuremberg (CCC ER-EMN) and CCC Alliance WERA, 91054 Erlangen, Germany
- Bavarian Cancer Research Center (BZKF), 91052 Erlangen, Germany
| | - Michael Erdmann
- Department of Dermatology, Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany; (T.B.); (I.K.); (Y.F.); (R.K.); (M.E.); (C.B.)
- Comprehensive Cancer Center Erlangen-European Metropolitan Area of Nuremberg (CCC ER-EMN) and CCC Alliance WERA, 91054 Erlangen, Germany
- Bavarian Cancer Research Center (BZKF), 91052 Erlangen, Germany
| | - Carola Berking
- Department of Dermatology, Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany; (T.B.); (I.K.); (Y.F.); (R.K.); (M.E.); (C.B.)
- Comprehensive Cancer Center Erlangen-European Metropolitan Area of Nuremberg (CCC ER-EMN) and CCC Alliance WERA, 91054 Erlangen, Germany
- Bavarian Cancer Research Center (BZKF), 91052 Erlangen, Germany
| | - Markus V. Heppt
- Department of Dermatology, Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany; (T.B.); (I.K.); (Y.F.); (R.K.); (M.E.); (C.B.)
- Comprehensive Cancer Center Erlangen-European Metropolitan Area of Nuremberg (CCC ER-EMN) and CCC Alliance WERA, 91054 Erlangen, Germany
- Bavarian Cancer Research Center (BZKF), 91052 Erlangen, Germany
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Schlein SM, Reno EM, Coffey CH, Casper LM, Klein DA, Claypool MS, Wiitala EL, Keyes LE. Environmental Exposures and Risks During Pregnancy. Wilderness Environ Med 2024:10806032241248626. [PMID: 38706212 DOI: 10.1177/10806032241248626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
The Women in Wilderness Medicine Research Committee of the Wilderness Medical Society conducted a narrative review to address considerations for pregnant individuals in wilderness environments. There is limited evidence behind many opinion-based recommendations on the safety of various environmental exposures in pregnancy. The authors reviewed the literature for the best available evidence, including observational studies, case series, limited controlled trials, and extrapolation from physiological data, as well as evaluating expert consensus statements. The benefits of exposure to natural environments include better pregnancy outcomes and improved maternal mental and physical health. Risks are similar to nonpregnant individuals with the added risks associated with maternal-fetal physiology in wilderness environments and difficulties of evacuation. This narrative review discusses pregnancy-specific concerns in extreme environments, including high altitude, hypothermia, hyperthermia, lightning strikes, envenomations, and common outdoor exposures.
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Affiliation(s)
- Sarah M Schlein
- Larner College of Medicine, University of Vermont, Burlington, VT
| | - Elaine M Reno
- Department of Emergency Medicine, University of Colorado, Aurora, CO
| | | | | | - David A Klein
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Diego, San Diego, CA
| | | | - Ellen L Wiitala
- Department of Emergency Medicine, University of Utah, Salt Lake City, UT
| | - Linda E Keyes
- Department of Emergency Medicine, University of Colorado, Aurora, CO
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De Crem C, Van Winckel M, Vandenplas Y, Raaijmakers A. Self-reported prescribing behaviour of vitamin D prophylaxis in healthy children by Belgian paediatricians. Eur J Clin Nutr 2024; 78:295-300. [PMID: 38172347 DOI: 10.1038/s41430-023-01387-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 11/27/2023] [Accepted: 12/01/2023] [Indexed: 01/05/2024]
Abstract
There is currently no consensus on the guidelines for vitamin D prophylaxis in healthy children. The purpose of this study was to investigate the prescribing behaviour of vitamin D prophylaxis among Belgian paediatricians. Between June and September 2022, a questionnaire was distributed by email to all Belgian paediatricians who are a member of at least one of three scientific or professional organisations, as well as to the heads of every Belgian paediatric or neonatal hospital ward. We analysed 426 completed questionnaires. All regions, age categories and subspecialties were represented. Vitamin D prophylaxis is always or frequently recommended by 98% of paediatricians. Fifty-eight per cent of paediatricians advise vitamin D prophylaxis up to the age of six years and 66% of paediatricians advise a daily dose of 400 IU. In nearly every hospital in Belgium (96%), there is a specific protocol for vitamin D prophylaxis for newborns; but not for the paediatric unit (only 30%). Nearly all Belgian paediatricians prescribe vitamin D prophylaxis to infants. Although not recommended by guidelines, 25(OH)D is frequently measured by paediatricians. Practices regarding duration and dosing of vitamin D prophylaxis show large variability. Most neonatal wards do have a protocol, whereas most paediatric wards do not.
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Affiliation(s)
- Charlotte De Crem
- Paediatrician in training, MD, Paediatric Intensive Care Unit, University Hospital Ghent, 9000, Ghent, East-Flanders, Belgium
| | - Myriam Van Winckel
- Paediatric Gastroenterology, University Hospital Ghent, 9000, Ghent, East-Flanders, Belgium
| | - Yvan Vandenplas
- Vrije Universiteit Brussel (VUB), UZ Brussel, KidZ Health Castle, Brussels, Belgium
| | - Anke Raaijmakers
- General Paediatrics, Hospital Network Antwerp, 2170, Merksem, Antwerp, Belgium.
- Department of Paediatric Nephrology, Sydney Children's Hospital, Randwick, NSW, Australia.
- UNSW School of Women's and Children's Health, Randwick Clinical Campus, Randwick, NSW, Australia.
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Ashton R, Wilkinson AN. Melanoma crash course. CANADIAN FAMILY PHYSICIAN MEDECIN DE FAMILLE CANADIEN 2024; 70:254-257. [PMID: 38627006 PMCID: PMC11280659 DOI: 10.46747/cfp.7004254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Affiliation(s)
- Rosalind Ashton
- General practitioner at the Dermatology Ottawa Research Centre in Ontario
| | - Anna N Wilkinson
- Associate Professor in the Department of Family Medicine at the University of Ottawa in Ontario, a family physician with the Ottawa Academic Family Health Team, a general practitioner oncologist at the Ottawa Hospital Cancer Centre, Program Director of PGY-3 FP-Oncology, and Regional Cancer Primary Care Lead for Champlain Region
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Han KH, Jeong Y, Suh YJ, Suh DH, Kim K, Kim YB, No JH. Effect of air temperature on serum 25-hydroxyvitamin D concentrations: A single institutional large-scale study in Korea. PLoS One 2024; 19:e0297495. [PMID: 38551922 PMCID: PMC10980248 DOI: 10.1371/journal.pone.0297495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 01/07/2024] [Indexed: 04/01/2024] Open
Abstract
Vitamin D deficiency is a worldwide health issue especially in women. Serum vitamin D concentrations vary depending on the weather. However, the ideal vitamin D supplementation strategy related to weather remains uncertain. We aimed to investigate the relationship between climate factors and serum 25-hydroxy vitamin D [25(OH)D] concentrations. This study included 11,272 women aged 20-79 who visited a health promotion center for annual checkups between January 2013 and December 2015. We reviewed medical records and collected daily meteorological data. We analyzed the association between serum 25(OH)D concentration and climate factors using simple and multiple regression models and then predicted serum 25(OH)D concentration using multiple fractional polynomial models. The median age of the participants was 51 years (20-79 years), and the mean serum 25(OH)D level was 17.4 ± 8.6 ng/mL. The serum 25(OH)D concentration was lower in young women than in older women. The proportions of women with adequate 25(OH)D levels were 14.9% and 47.0% in the age groups 20-29 and 70-79, respectively. The maximum level of predicted log 25(OH)D was found in September, and the minimum was found in January. In multiple regression analysis, age and monthly mean temperature were associated with 25(OH)D concentrations. Serum 25(OH)D level was predicted using the following formula: log (25(OH)D) = 2.144 + 0.009 × age + 0.018 × ((temperature + 12.4)/10)2 (P < 0.001, adjusted R2 = 0.091). Serum 25(OH)D concentrations changed according to air temperature. An adequate strategy for vitamin D supplementation, based on air temperature, is necessary to maintain healthy serum 25(OH)D levels.
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Affiliation(s)
- Kyung Hee Han
- Department of Obstetrics and Gynecology, CHA University Ilsan Medical Center, Gyeonggi-do, Republic of Korea
| | - Yujin Jeong
- Department of Biostatistics, Korea University College of Medicine, Seoul, Republic of Korea
| | - Young Ju Suh
- Department of Biomedical Science, College of Medicine, Inha University, Incheon, Republic of Korea
| | - Dong Hoon Suh
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Kidong Kim
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Yong Beom Kim
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jae Hong No
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
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Li Y, Hu T, Xia X, Ge L. Knowledge, attitude, and practice toward photoaging in the Chinese population: a cross-sectional study. Sci Rep 2024; 14:5196. [PMID: 38431712 PMCID: PMC10908786 DOI: 10.1038/s41598-024-55691-5] [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: 10/16/2023] [Accepted: 02/27/2024] [Indexed: 03/05/2024] Open
Abstract
To investigate the knowledge, attitude, and practice (KAP) of photoaging in the Chinese population. This web-based cross-sectional study was conducted between January 2023 and March 2023 among the Chinese population aged 18-80 years old. Participants' knowledge, attitude, and practice toward photoaging were collected through a self-administered questionnaire. A total of 830 questionnaires were collected, with 826 valid questionnaires and an efficiency rate of 99.52%. There were 274 (33.17%) males and 532 (64.41%) aged 31-51 years old. The average knowledge, attitude, and practice scores were 7 (4, 9) (possible range 0-12), 31.5 (28, 34) (possible range 8-40), and 33 (24, 42) (possible range 11-55), respectively, indicating poor knowledge, good attitude, and moderate practice. Spearman correlation analysis showed that knowledge was negatively correlated with attitude (r = - 0.111, P < 0.05) and practice (r = - 0.113, P < 0.05), and attitude was positively correlated with practice (r = 0.992, P < 0.05). The multivariable linear regression model showed that for each point increase in attitude score, the practice score increased by 2.96 points (β = 2.96, 95% CI 2.91-3.01, P < 0.001). The Chinese population has poor knowledge, good attitude, and moderate practice toward photoaging. A good attitude toward photoaging would lead to good practice, and more outreach and education for the Chinese population might be needed.
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Affiliation(s)
- Yaoying Li
- Department of Dermatology, Southwest Hospital, Army Military Medical University, Chongqing, 400038, China
| | - Tianxing Hu
- Department of Dermatology, Southwest Hospital, Army Military Medical University, Chongqing, 400038, China
| | - Xiaoqin Xia
- Department of Dermatology, Southwest Hospital, Army Military Medical University, Chongqing, 400038, China
| | - Lan Ge
- Department of Dermatology, Southwest Hospital, Army Military Medical University, Chongqing, 400038, China.
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13
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Van de Walle L, Vandenplas Y, Toelen J, Raaijmakers A. Vitamin D Status in Belgian Children: A Regional Study. Nutrients 2024; 16:657. [PMID: 38474785 DOI: 10.3390/nu16050657] [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: 01/18/2024] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 03/14/2024] Open
Abstract
Background: Vitamin D deficiency is the most frequent cause of impaired skeletal growth, and can lead to the development of nutritional rickets. The aim of this study was to evaluate the vitamin D status in a large group of children aged 0-18 years. Methods: We collected laboratory data on vitamin D levels from children who underwent blood sampling between 2014 and 2021. Results: We included 14,887 samples. In this group, 17.7% were vitamin D severely deficient (<12 ng/mL), 25.2% were insufficient (12-20 ng/mL), and another large proportion (28.3%) was borderline (20-30 ng/mL). Sufficient levels (>30 ng/mL) were met in 28.8% of children. We observed no association between gender and vitamin D status (p = 0.132). Adolescents aged 13-18 years (n = 3342) had the highest prevalence of severe vitamin D deficiency (24.9%). Vitamin D levels were higher in summer/autumn compared to winter/spring. Conclusions: Vitamin D deficiency/insufficiency has a high prevalence in children, mostly in children above 7 years of age. Many of these children (over 80%) do not meet the 30 ng/mL sufficiency threshold. It is essential that Belgian Health Authorities are aware of this high prevalence, as the current Belgian recommendation suggests ceasing vitamin D supplementation at the age of six. Additional research is required to investigate the consequences of our findings, and what specific approach is needed to achieve normal vitamin D levels in children aged 0 to 18 years.
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Affiliation(s)
- Louise Van de Walle
- Department of Development and Regeneration, University of Leuven, 3000 Leuven, Belgium
| | - Yvan Vandenplas
- KidZ Health Castle, UZ Brussel, Vrije Universiteit Brussel (VUB), 1090 Brussels, Belgium
| | - Jaan Toelen
- Department of Development and Regeneration, University of Leuven, 3000 Leuven, Belgium
- Department of General Pediatrics, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Anke Raaijmakers
- Department of Paediatric Nephrology, Sydney Children's Hospital Randwick, Sydney Children's Hospital Network, Randwick, NSW 2031, Australia
- Randwick Clinical Campus, School of Women's and Children's Health, University of New South Wales, Randwick, NSW 2031, Australia
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14
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Wierzbicka A, Pawlina-Tyszko K, Świątkiewicz M, Szmatoła T, Oczkowicz M. Changes in miRNA expression in the lungs of pigs supplemented with different levels and forms of vitamin D. Mol Biol Rep 2023; 51:8. [PMID: 38085380 PMCID: PMC10716066 DOI: 10.1007/s11033-023-08940-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 10/23/2023] [Indexed: 12/18/2023]
Abstract
BACKGROUND Vitamin D is an immunomodulator, and its effects have been linked to many diseases, including the pathogenesis of cancer. However, the effect of vitamin D supplementation on the regulation of gene expression of the lungs is not fully understood. This study aims to determine the effect of the increased dose of cholecalciferol and a combination of cholecalciferol + calcidiol, as well as the replacement of cholecalciferol with calcidiol, on the miRNA profile of healthy swine lungs. METHODS AND RESULTS The swine were long-term (88 days) supplemented with a standard dose (2000IU/kg) of cholecalciferol and calcidiol, the increased dose (3000 IU/kg) of cholecalciferol, and the cholecalciferol + calcidiol combination: grower: 3000 IU/Kg of vitamin D (67% of cholecalciferol and 33% of calcidiol), finisher 2500 IU/Kg of vitamin D (60% of cholecalciferol and 40% of calcidiol). Swine lung tissue was used for Next Generation Sequencing (NGS) of miRNA. Long-term supplementation with the cholecalciferol + calcidiol combination caused significant changes in the miRNA profile. They embraced altered levels of the expression of miR-150, miR-193, miR-145, miR-574, miR-340, miR-381, miR-148 and miR-96 (q-value < 0.05). In contrast, raising the dose of cholecalciferol only changed the expression of miR-215, and the total replacement of cholecalciferol with calcidiol did not significantly affect the miRNAome profile. CONCLUSIONS The functional analysis of differentially expressed miRNAs suggests that the use of the increased dose of the cholecalciferol + calcidiol combination may affect tumorigenesis processes through, inter alia, modulation of gene regulation of the TGF- β pathway and pathways related to metabolism and synthesis of glycan.
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Affiliation(s)
- Alicja Wierzbicka
- Department of Animal Molecular Biology, National Research Institute of Animal Production, Ul. Krakowska 1, Balice, 32-083, Poland
| | - Klaudia Pawlina-Tyszko
- Department of Animal Molecular Biology, National Research Institute of Animal Production, Ul. Krakowska 1, Balice, 32-083, Poland
| | - Małgorzata Świątkiewicz
- Department of Animal Nutrition and Feed Science, National Research Institute of Animal Production, Ul. Krakowska 1, Balice, 32-083, Poland
| | - Tomasz Szmatoła
- Department of Animal Molecular Biology, National Research Institute of Animal Production, Ul. Krakowska 1, Balice, 32-083, Poland
- Center for Experimental and Innovative Medicine, University of Agriculture in Kraków, Rędzina 1c, Kraków, 30 248, Poland
| | - Maria Oczkowicz
- Department of Animal Molecular Biology, National Research Institute of Animal Production, Ul. Krakowska 1, Balice, 32-083, Poland.
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15
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Kaag S, Lorentz A. Effects of Dietary Components on Mast Cells: Possible Use as Nutraceuticals for Allergies? Cells 2023; 12:2602. [PMID: 37998337 PMCID: PMC10670325 DOI: 10.3390/cells12222602] [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: 09/29/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/25/2023] Open
Abstract
Allergic diseases affect an estimated 30 percent of the world's population. Mast cells (MC) are the key effector cells of allergic reactions by releasing pro-inflammatory mediators such as histamine, lipid mediators, and cytokines/chemokines. Components of the daily diet, including certain fatty acids, amino acids, and vitamins, as well as secondary plant components, may have effects on MC and thus may be of interest as nutraceuticals for the prevention and treatment of allergies. This review summarizes the anti-inflammatory effects of dietary components on MC, including the signaling pathways involved, in in vitro and in vivo models. Butyrate, calcitriol, kaempferol, quercetin, luteolin, resveratrol, curcumin, and cinnamon extract were the most effective in suppressing the release of preformed and de novo synthesized mediators from MC or in animal models. In randomized controlled trials (RCT), vitamin D, quercetin, O-methylated epigallocatechin gallate (EGCG), resveratrol, curcumin, and cinnamon extract improved symptoms of allergic rhinitis (AR) and reduced the number of inflammatory cells in patients. However, strategies to overcome the poor bioavailability of these nutrients are an important part of current research.
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Affiliation(s)
| | - Axel Lorentz
- Institute of Nutritional Medicine, University of Hohenheim, D-70593 Stuttgart, Germany
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16
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Onyango DO, Selman BG, Rose JL, Ellison CA, Nash JF. Comparison between endocrine activity assessed using ToxCast/Tox21 database and human plasma concentration of sunscreen active ingredients/UV filters. Toxicol Sci 2023; 196:25-37. [PMID: 37561120 PMCID: PMC10613966 DOI: 10.1093/toxsci/kfad082] [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] [Indexed: 08/11/2023] Open
Abstract
Sunscreen products are composed of ultraviolet (UV) filters and formulated to reduce exposure to sunlight thereby lessening skin damage. Concerns have been raised regarding the toxicity and potential endocrine disrupting (ED) effects of UV filters. The ToxCast/Tox21 program, that is, CompTox, is a high-throughput in vitro screening database of chemicals that identify adverse outcome pathways, key events, and ED potential of chemicals. Using the ToxCast/Tox21 database, octisalate, homosalate, octocrylene, oxybenzone, octinoxate, and avobenzone, 6 commonly used organic UV filters, were found to have been evaluated. These UV filters showed low potency in these bioassays with most activity detected above the range of the cytotoxic burst. The pathways that were most affected were the cell cycle and the nuclear receptor pathways. Most activity was observed in liver and kidney-based bioassays. These organic filters and their metabolites showed relatively weak ED activity when tested in bioassays measuring estrogen receptor (ER), androgen receptor (AR), thyroid receptor, and steroidogenesis activity. Except for oxybenzone, all activity in the endocrine assays occurred at concentrations greater than the cytotoxic burst. Moreover, except for oxybenzone, plasma concentrations (Cmax) measured in humans were at least 100× lower than bioactive (AC50/ACC) concentrations that produced a response in ToxCast/Tox21 assays. These data are consistent with in vivo animal/human studies showing weak or negligible endocrine activity. In sum, when considered as part of a weight-of-evidence assessment and compared with measured plasma concentrations, the results show these organic UV filters have low intrinsic biological activity and risk of toxicity including endocrine disruption in humans.
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Affiliation(s)
- David O Onyango
- Global Product Stewardship, The Procter & Gamble Company, Mason, Ohio 45040, USA
| | - Bastian G Selman
- Global Product Stewardship, The Procter & Gamble Company, Mason, Ohio 45040, USA
| | - Jane L Rose
- Global Product Stewardship, The Procter & Gamble Company, Mason, Ohio 45040, USA
| | - Corie A Ellison
- Global Product Stewardship, The Procter & Gamble Company, Mason, Ohio 45040, USA
| | - J F Nash
- Global Product Stewardship, The Procter & Gamble Company, Mason, Ohio 45040, USA
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17
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Bopape PG, Wagenaar C, Poka M, Bronkhorst E. Vitamin D supplementation in a post-pandemic era: A narrative review. S Afr Fam Pract (2004) 2023; 65:e1-e6. [PMID: 37916701 PMCID: PMC10623655 DOI: 10.4102/safp.v65i1.5752] [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: 03/23/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 11/03/2023] Open
Abstract
Vitamin D is a fat-soluble molecule referring to the different isoforms, ergocalciferol (D2) and cholecalciferol (D3). Its physiological functions include increasing calcium serum concentrations. 25-hydroxyvitamin D3 (25(OH)D) (Calcifediol), a non-active, circulating instant precursor is seen as a pre-hormone. Studies have shown that a deficiency in calcifediol is related to chronic conditions such as cardiovascular, musculoskeletal, immune system, neurological, and anti-neoplastic functions. Vitamin D supplementation has shown its benefit as prophylaxis and treatment during the coronavirus disease 2019 (COVID-19) pandemic and an increase in the prescribing of vitamin D supplementation has been observed. The intention of this review article is to provide guidance on the recommended dosage regimen as a prophylactic measure during COVID-19 and its use as a supplement in general. From this review article, it is clear that vitamin D has an important role to play not only in COVID-19 but also in various other health aspects of the human body.Contribution: This review article highlighted the role of vitamin D in managing vitamin D deficiency and its role as a supplement in the management of respiratory tract infections, especially COVID-19. This overview can assist physicians in optimising healthcare by optimised dosing recommendations and indications.
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Affiliation(s)
- Pheagane G Bopape
- Department of Clinical Pharmacy, Faculty of Health Sciences, School of Pharmacy, Sefako Makgatho Health Sciences University, Pretoria.
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18
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Young AR. The adverse consequences of not using sunscreens. Int J Cosmet Sci 2023; 45 Suppl 1:11-19. [PMID: 37799076 DOI: 10.1111/ics.12897] [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: 02/13/2023] [Accepted: 03/10/2023] [Indexed: 10/07/2023]
Abstract
The adverse effects of solar ultraviolet radiation (UVR) on normal skin are well established, especially in those with poorly melanized skin. Clinically, these effects may be classified as acute, such as erythema or chronic such as keratinocyte and melanocyte skin cancers. Apart from skin type genetics, clinical responses to solar UVR are dependent on geophysical (e.g., solar intensity) and behavioural factors. The latter are especially important because they may result in 'solar overload' with unwanted clinical consequences and ever greater burdens to healthcare systems. Correctly used, sunscreens can mitigate the acute and chronic effects of solar UVR exposure. Laboratory studies also show that sunscreens can inhibit the initial molecular and cellular events that are responsible for clinical outcomes. Despite public health campaigns, global trends continue to show increasing incidence of all types of skin cancer. Large-scale epidemiological studies have shown the benefits of sunscreen use in preventing skin cancer, though it is likely that sunscreen use has not been optimal in such studies. It is evident that without substantial changes in sun-seeking behaviour, sunscreen use is a very important part of the defence against the acute and chronic effects of solar exposure. Ideally, sunscreens should be able to provide the level of protection that reduces the risk of skin cancer in susceptible skin types to that observed in heavily melanized skin.
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Affiliation(s)
- Antony R Young
- St John's Institute of Dermatology, King's College London, London, UK
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19
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Joshi M, Hiremath P, John J, Ranadive N, Nandakumar K, Mudgal J. Modulatory role of vitamins A, B3, C, D, and E on skin health, immunity, microbiome, and diseases. Pharmacol Rep 2023; 75:1096-1114. [PMID: 37673852 PMCID: PMC10539462 DOI: 10.1007/s43440-023-00520-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/17/2023] [Accepted: 08/18/2023] [Indexed: 09/08/2023]
Abstract
Disruption of the skin barrier and immunity has been associated with several skin diseases, namely atopic dermatitis (AD), psoriasis, and acne. Resident and non-resident immune cells and the barrier system of the skin are integral to innate immunity. Recent advances in understanding skin microbiota have opened the scope of further understanding the various communications between these microbiota and skin immune cells. Vitamins, being one of the important micronutrients, have been reported to exert antioxidant, anti-inflammatory, and anti-microbial effects. The immunomodulatory action of vitamins can halt the progression of skin diseases, and thus, understanding the immuno-pharmacology of these vitamins, especially for skin diseases can pave the way for their therapeutic potential. At the same time, molecular and cellular markers modulated with these vitamins and their derivatives need to be explored. The present review is focused on significant vitamins (vitamins A, B3, C, D, and E) consumed as nutritional supplements to discuss the outcomes and scope of studies related to skin immunity, health, and diseases.
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Affiliation(s)
- Mahika Joshi
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Priyanka Hiremath
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Jeena John
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Niraja Ranadive
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Krishnadas Nandakumar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Jayesh Mudgal
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India.
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20
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Visuthranukul J, Phansuea P, Buranakityanon P, Lerdrungroj P, Yamasmith E. Prevalence and risk factors of vitamin D deficiency among living with HIV adults receiving antiretroviral treatment in tropical area: Cross-sectional study. Heliyon 2023; 9:e19537. [PMID: 37809448 PMCID: PMC10558745 DOI: 10.1016/j.heliyon.2023.e19537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 08/04/2023] [Accepted: 08/25/2023] [Indexed: 10/10/2023] Open
Abstract
Background There was found HIV infection have a higher rate of vitamin D deficiency (VDD) than the general population, even a slight deficiency, can increase the risk of osteoporosis in adults. This study aimed to determine the prevalence and risk factors of VDD in HIV-infected adults receiving antiretroviral therapy (ART) in a tropical area. Methods A cross-sectional study of an HIV-clinical population-based cohort was conducted at Police General Hospital (PGH), from 1st August 2020 to 31st July 2021, in Bangkok, Thailand. Serum 25(OH)D level was measured using ECLIA. All other laboratory investigations were conducted at the PGH's central lab center. The descriptive analysis utilized frequency (percentages) and mean (SD) as appropriate variable types. Chi-square tests (χ2) and independent samples t-tests were used to differentiate between VDD and non-VDD groups. To determine the association between VDD and non-VDD, gender, age (years), BMI discrepancy, ART regimens, ART-duration (years), HIV viral load, and CD4 count (cells/mm3). Univariate and multivariable logistics regression was conducted, respectively. Results Of 602 patients, 66.4% were females with mean age of 45.22 ± 10.23 years. The average serum 25(OH)D level was 18.69 ± 7.23 ng/ml. The prevalence of VDD (<20 ng/ml) and insufficiency (VDI) (20-29.9 ng/ml) was 58.5% and 35.2%, respectively. Risk factors associated with vitamin D inadequacy were increasing age (AOR = 1.05, 95%CI = 1.03-1.07, P < .001), efavirenz (EFV-based) use (AOR = 6.07, 95%CI = 3.57-10.31, P < .001), while male (AOR = 0.44, 95%CI = 0.29-0.66, P < .001), body mass index (BMI) lower than 18.5 (AOR = 0.26; 95% CI, 0.11-0.62, P = .002), protease Inhibitors (PIs-based) use (AOR = 0.18, 95%CI = 0.11-0.30, P < .001),and CD4 count <200 cells/mm3 (AOR = 0.41; 95% CI, 0.20-0.85, P = .017) were associated with less VDD. Conclusion The implementation of focused strategies for vitamin D supplementation, specifically targeting older patients and patients undergoing EFV-based ART regimen, can serve as a valuable addition to comprehensive HIV management. By optimizing vitamin D levels, there is a potential to improve health outcomes and enhance overall well-being for individuals living with HIV.
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Affiliation(s)
- Jirayu Visuthranukul
- Infectious Disease Unit, Department of Internal Medicine, Police General Hospital, Bangkok, 10330, Thailand
| | - Phenphop Phansuea
- Food and Nutrition Academic and Research Cluster, Institute of Nutrition, Mahidol University, Salaya, Phutthamonthon, Nakhon Pathom, 73170, Thailand
| | | | - Prapawan Lerdrungroj
- Department of Internal Medicine, Police General Hospital, Bangkok, 10330, Thailand
| | - Eakkawit Yamasmith
- Infectious Disease Unit, Department of Internal Medicine, Police General Hospital, Bangkok, 10330, Thailand
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21
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Dos Santos EA, Cavalheiro LAM, Rodrigues D, Machado-Rodrigues A, Silva MR, Nogueira H, Padez C. Is more prolonged sun exposure associated with healthier life habits and obesity indicators in Portuguese children? Am J Hum Biol 2023; 35:e23918. [PMID: 37228007 DOI: 10.1002/ajhb.23918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 04/12/2023] [Accepted: 05/08/2023] [Indexed: 05/27/2023] Open
Abstract
OBJECTIVES Sun exposure seems to have an indirect effect on the development of obesity through vitamin D synthesis in the skin, the primary source of this vitamin. The present study aimed to investigate associations among sun exposure time, obesity indicators, and lifestyle habits in children. METHODS A total of 4755 children (3-10 years; 49.86% boys) from the north, center and south-central Portugal were included in the present study. During 2016/2017 children's sun exposure time, screen time, time devoted to the practice of physical activity and active play were collected through standard questionnaires answered by parents. Statistical analyses were conducted to investigate differences among sun exposure time according to the sex, age, obesity indicators and lifestyle habits. RESULTS Linear regression analysis showed that sun exposure time presented a negative association with Body Mass Index (β = -0.09, 95% CI: -0.18; -0.003; p = .042), body fat % (β = -0.31, 95%; CI: -0.54; -0.07; p = .010), computer time (β = -0.08, 95% CI: -0.12; - 0.05; p < .0001) and a positive association with active play time (β = 0.22, 95% CI: 0.17; 0.27; p < .0001) and total time of physical activity practice (β = 10.01, 95% CI: 4.52; 15.20; p < .0001). CONCLUSIONS The results reinforce the need for future guidance on the ideal sun exposure time, especially in children, who are at risk for vitamin D deficiency. Standardization of criteria for classifying optimal sun exposure time in this age group, considering the parameters that affect vitamin D status, such as age and seasonality, should be considered when planning future guidelines.
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Affiliation(s)
- Elizabete A Dos Santos
- Nutrition Department, School of Public Health, University of São Paulo, São Paulo, Brazil
| | | | - Daniela Rodrigues
- Research Centre for Anthropology and Health, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | | | - Maria-Raquel Silva
- Research Centre for Anthropology and Health, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
- Faculty of Health Sciences, University Fernando Pessoa, Porto, Portugal
- Comprehensive Health Research Centre-Group of Sleep, Chronobiology and Sleep Disorders-Nova Medical School, University of Lisbon, Lisbon, Portugal
| | - Helena Nogueira
- Research Centre for Anthropology and Health, Department of Geography and Tourism, University of Coimbra, Coimbra, Portugal
| | - Cristina Padez
- Research Centre for Anthropology and Health, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
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22
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Brunsgaard EK, Jensen J, Grossman D. Melanoma in skin of color: Part II. Racial disparities, role of UV, and interventions for earlier detection. J Am Acad Dermatol 2023; 89:459-468. [PMID: 35533770 DOI: 10.1016/j.jaad.2022.04.057] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 04/08/2022] [Accepted: 04/26/2022] [Indexed: 10/18/2022]
Abstract
Despite a higher incidence of melanoma among White individuals, melanoma-specific survival is worse among individuals with skin of color. Racial disparities in survival are multifactorial. Decreased skin cancer education focused on people with skin of color, lower rates of screening, increased socioeconomic barriers, higher proportions of more aggressive subtypes, and underrepresentation in research and professional education contribute to delays in diagnosis and treatment. Although high, intermittent UV exposure during childhood has been established as a significant modifiable risk factor for melanoma in individuals with lighter skin phototypes, there are limited data on UV exposure and melanoma risk in people with darker skin phototypes. The second article of this continuing medical education series will examine factors contributing to racial disparities in melanoma-specific survival, discuss the role of UV radiation, and address the need for further research and targeted educational interventions for melanoma in individuals with skin of color.
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Affiliation(s)
- Elise K Brunsgaard
- Huntsman Cancer Institute, University of Utah Health Sciences Center, Salt Lake City, Utah
| | - Jakob Jensen
- Huntsman Cancer Institute, University of Utah Health Sciences Center, Salt Lake City, Utah; Department of Communication, University of Utah, Salt Lake City, Utah
| | - Douglas Grossman
- Huntsman Cancer Institute, University of Utah Health Sciences Center, Salt Lake City, Utah; Department of Dermatology, University of Utah Health Sciences Center, Salt Lake City, Utah; Department of Oncological Sciences, University of Utah Health Sciences Center, Salt Lake City, Utah.
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23
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Cole Y, Ilyas AM, Ilyas EN. Assessment of UV Protection for Children's Summer Clothing. Cureus 2023; 15:e44137. [PMID: 37753032 PMCID: PMC10518426 DOI: 10.7759/cureus.44137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2023] [Indexed: 09/28/2023] Open
Abstract
INTRODUCTION Excess ultraviolet (UV) radiation exposure during childhood poses a particular long-term risk of developing skin cancer later in life however recent studies have called attention to the absorption of chemical sunscreen ingredients into the bloodstream with unclear significance. This has led to recommendations to consider sun protection in the form of clothing to reduce the need for sunscreen products. METHODS Ten brands of routine summer clothing not labeled as sun protective from five distributors marketed for children were identified with varying price ranges. Summer clothing items consisting of T-shirts and tops were evaluated for fiber composition, cost, and UPF testing was performed to determine UVA and UVB transmittance. Results: Around 88.2% of blended textile compositions compared to 60% of 100% cotton textiles offered adequate UV protection with an Ultraviolet Protection Factor (UPF) greater than 15. 58% of blended fabrics compared to 50% of cotton textiles offered a UPF greater than 30. There was no correlation between brand and cost with UPF values. Conclusions: In the absence of regulations for testing and labeling of all children's garments for UV protection, guidelines for the pediatric population for choosing clothing for the summer should reflect the information available to consumers that is easy to understand and more likely to result in higher UPF values. Based on fiber composition, blended textiles are more likely to have adequate UV protection compared to 100% cotton or 100% polyester.
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Affiliation(s)
- Yonesha Cole
- Dermatology, Drexel University College of Medicine, Philadelphia, USA
| | - Amber M Ilyas
- Health and Environmental Impact, AmberNoon LLC, King of Prussia, USA
| | - Erum N Ilyas
- Dermatology, Drexel University College of Medicine, Philadelphia, USA
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Raymond-Lezman JR, Riskin SI. Benefits and Risks of Sun Exposure to Maintain Adequate Vitamin D Levels. Cureus 2023; 15:e38578. [PMID: 37284402 PMCID: PMC10239563 DOI: 10.7759/cureus.38578] [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] [Accepted: 05/03/2023] [Indexed: 06/08/2023] Open
Abstract
Vitamin D is a hormone that can be generated in the skin upon ultraviolet light exposure or ingested through supplementation. Vitamin D deficiency may have numerous deleterious effects on health. Sun avoidance strategies should be avoided due to the unwanted health risks associated with hypovitaminosis D. We present an objective investigation of the benefits and risks of using sun exposure to increase vitamin D levels and how it impacts human health. A review of the literature was conducted using Embase and PubMed to examine the relationship between UV exposure, vitamin D levels, health benefits, and risks. UV exposure is the primary method of boosting serum vitamin D levels, which accounts for numerous health benefits. Higher levels of vitamin D are associated with protection against cancer development, including melanoma. Latitude, season, skin color, and sun protection determine UV absorption and vitamin D production. Public health sun protection guidelines decrease the incidence of skin cancer, but sun avoidance can cause hypovitaminosis D. Serum vitamin D levels less than 16 nmol/L increase morbidity through increased non-cutaneous disease. Sun protection strategies should still be implemented to reduce skin cancer, and sunscreen only minimally lowers vitamin D production. Vitamin D deficiency can increase chronic diseases and cancer, while adequate vitamin D levels can help prevent them. UV exposure and vitamin D production are dependent on many factors. Increasing UV exposure without causing sunburn maximizes vitamin D production.
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Affiliation(s)
- Jonathan R Raymond-Lezman
- Foundational Sciences, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Clearwater, USA
| | - Suzanne I Riskin
- Department of Internal Medicine, Foundational Sciences, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Clearwater, USA
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Vitamin D3 Supplementation: Comparison of 1000 IU and 2000 IU Dose in Healthy Individuals. Life (Basel) 2023; 13:life13030808. [PMID: 36983963 PMCID: PMC10053989 DOI: 10.3390/life13030808] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/10/2023] [Accepted: 03/13/2023] [Indexed: 03/18/2023] Open
Abstract
Background: Scientific studies point to a significant global vitamin D deficiency. The recommended dose of vitamin D for the adult population in Central Europe is 800–2000 IU/day. The aim of our study was to determine whether doses of 1000 IU or 2000 IU of vitamin D3 are adequate to achieve the sufficiency reference values of [25(OH)D]. Methods: Seventy-two healthy volunteers, average age twenty-two, took part in the study. The study was conducted from October to March in order to eliminate intra-dermal vitamin D production. Vitamin D3 in an oleaginous mixture was used. The participants used either 1000 IU or 2000 IU/daily for two 60-day periods with a 30-day break. Results: The dose of 1000 IU, taken for 60 days, increased vitamin D levels relatively little. Furthermore, serum vitamin D levels decreased in the 30 days following the cessation of supplementation. Taking 2000 IU daily led to a sharp increase in serum levels which plateaued 30 days after the subjects stopped using vitamin D3 drops. Conclusions: Both doses, taken daily, can help maintain adequate vitamin D levels during the winter months. A daily dose of 2000 IU, however, maintained the desired levels of vitamin D for a longer period.
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Neale RE, Lucas RM, Byrne SN, Hollestein L, Rhodes LE, Yazar S, Young AR, Berwick M, Ireland RA, Olsen CM. The effects of exposure to solar radiation on human health. Photochem Photobiol Sci 2023:10.1007/s43630-023-00375-8. [PMID: 36856971 PMCID: PMC9976694 DOI: 10.1007/s43630-023-00375-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 01/13/2023] [Indexed: 03/02/2023]
Abstract
This assessment by the Environmental Effects Assessment Panel (EEAP) of the Montreal Protocol under the United Nations Environment Programme (UNEP) evaluates the effects of ultraviolet (UV) radiation on human health within the context of the Montreal Protocol and its Amendments. We assess work published since our last comprehensive assessment in 2018. Over the last four years gains have been made in knowledge of the links between sun exposure and health outcomes, mechanisms, and estimates of disease burden, including economic impacts. Of particular note, there is new information about the way in which exposure to UV radiation modulates the immune system, causing both harms and benefits for health. The burden of skin cancer remains high, with many lives lost to melanoma and many more people treated for keratinocyte cancer, but it has been estimated that the Montreal Protocol will prevent 11 million cases of melanoma and 432 million cases of keratinocyte cancer that would otherwise have occurred in the United States in people born between 1890 and 2100. While the incidence of skin cancer continues to rise, rates have stabilised in younger populations in some countries. Mortality has also plateaued, partly due to the use of systemic therapies for advanced disease. However, these therapies are very expensive, contributing to the extremely high economic burden of skin cancer, and emphasising the importance and comparative cost-effectiveness of prevention. Photodermatoses, inflammatory skin conditions induced by exposure to UV radiation, can have a marked detrimental impact on the quality of life of sufferers. More information is emerging about their potential link with commonly used drugs, particularly anti-hypertensives. The eyes are also harmed by over-exposure to UV radiation. The incidence of cataract and pterygium is continuing to rise, and there is now evidence of a link between intraocular melanoma and sun exposure. It has been estimated that the Montreal Protocol will prevent 63 million cases of cataract that would otherwise have occurred in the United States in people born between 1890 and 2100. Despite the clearly established harms, exposure to UV radiation also has benefits for human health. While the best recognised benefit is production of vitamin D, beneficial effects mediated by factors other than vitamin D are emerging. For both sun exposure and vitamin D, there is increasingly convincing evidence of a positive role in diseases related to immune function, including both autoimmune diseases and infection. With its influence on the intensity of UV radiation and global warming, the Montreal Protocol has, and will have, both direct and indirect effects on human health, potentially changing the balance of the risks and benefits of spending time outdoors.
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Affiliation(s)
- R. E. Neale
- Population Health Program, QIMR Berghofer Medical Research Institute, Brisbane, QLD Australia ,School of Public Health, University of Queensland, Brisbane, QLD Australia
| | - R. M. Lucas
- National Centre for Epidemiology and Population Health, Australian National University, Canberra, ACT Australia
| | - S. N. Byrne
- School of Medical Science, Faculty of Medicine and Health, University of Sydney, Sydney, NSW Australia
| | - L. Hollestein
- Erasmus MC Cancer Institute, Rotterdam, The Netherlands ,Netherlands Comprehensive Cancer Organisation, Utrecht, The Netherlands
| | - L. E. Rhodes
- Dermatology Research Centre, School of Biological Sciences, University of Manchester, Salford Royal Hospital, Northern Care Alliance NHS Trust, Manchester, UK
| | - S. Yazar
- Garvan Medical Research Institute, Sydney, NSW Australia
| | | | - M. Berwick
- University of New Mexico Comprehensive Cancer Center, Albuquerque, USA
| | - R. A. Ireland
- School of Medical Science, Faculty of Medicine and Health, University of Sydney, Sydney, NSW Australia
| | - C. M. Olsen
- Population Health Program, QIMR Berghofer Medical Research Institute, Brisbane, QLD Australia ,Frazer Institute, University of Queensland, Brisbane, QLD Australia
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Association between serum Vitamin D levels and asthma severity and control in children and adolescents. Lung 2023; 201:181-187. [PMID: 36809416 DOI: 10.1007/s00408-023-00605-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 02/03/2023] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To assess the association of serum Vitamin D (vitD) levels with asthma control and severity in children and adolescents in different seasons of the year. METHOD Longitudinal, prospective study with 7- to 17-year-old children and adolescents diagnosed with asthma. All participants underwent two assessments conducted in opposite seasons of the year which included a clinical assessment, a questionnaire for classification of asthma control (Asthma Control Test), spirometry, and blood collection to measure serum vitD levels. RESULTS In total, 141 individuals with asthma were evaluated. The mean vitD was lower in females (p = 0.006) and sunlight exposure appears not to be an influencing factor for vitD levels. We found no differences in mean vitD of patients with controlled and uncontrolled asthma (p = 0.703; p = 0.956). However, the severe asthma group had lower mean Vitamin D than the mild/moderate asthma group for both assessments (p = 0.013; p = 0.032). In the first assessment, the group with vitD insufficiency had a higher prevalence of severe asthma (p = 0.015). Vitamin D was positively correlated with FEV1 in both assessments (p = 0.008; p = 0.006) and with FEF25-75% in the first assessment (p = 0.038). CONCLUSION In a tropical climate zone, there is no evidence of association between seasonality and serum vitD levels or between serum vitD levels and asthma control in children and adolescents. However, vitD and lung function were positively correlated and the group with vitD insufficiency had a higher prevalence of severe asthma.
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Nanotechnology as a Tool for Optimizing Topical Photoprotective Formulations Containing Buriti Oil (Mauritia flexuosa) and Dry Aloe vera Extracts: Stability and Cytotoxicity Evaluations. Pharmaceuticals (Basel) 2023. [DOI: 10.3390/ph16020292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
Human beings are actively exposed to ultraviolet (UV) radiation, which is associated with skin cancer. This has encouraged the continuous search for more effective and safer photoprotective formulations. Along with the application of traditional organic sunscreens, there is a growing interest in “green products” containing natural compounds such as plant extracts and oils. This trend is combined with the use of nanotechnology as a tool for optimizing the vehicles of such compounds. Nanoemulsions (NEs) are suitable for the encapsulation of natural compounds, which improves topical treatment. Therefore, we have developed oil-in-water (O/W) nanoemulsions containing 3% buriti oil (BO), incorporated in a 10% vegetal extract of Aloe vera (AV) by means of ultrasonic processing to improve the chemical characteristics of this component and, consequently, its efficacy and safety in pharmaceutical and cosmetic formulations. The composition of the formulation was initially defined in a preliminary study on surfactants where the concentrations of Tween® 80 and Span® 20 were evaluated in relation to particle size and the polydispersity index (PDI). The nanoemulsion was prepared and then chemical sunscreens were incorporated with the aim of developing a sunscreen nanoemulsion called NE-A19. This nanoemulsion was found to be the best formulation due to its stability, droplet size (146.80 ± 2.74), and PDI (0.302 ± 0.088), with a monomodal size distribution. The stability was evaluated over 90 days and showed a low growth in particle size at the end of the study. NE-A19 exhibited good viscosity and organoleptic properties, in addition to an occlusion factor indicating an interesting and higher water holding capacity when compared with a NE without AV (p < 0.05). The in vitro efficacy and safety studies of NE-19A were promising. Its average in vitro sun protection factor value was 49, with a critical wavelength (λc) of 369.7 nm, satisfactory UVA protection, and a UVA/UVB ratio of 0.40, indicating broad spectrum protection against UVA and UVB radiation. Furthermore, NE-19A displayed a good safety profile in dermal keratinocytes. It can be concluded that NE-19A is a promising formulation for carrying natural products, such as buriti oil and AV, associated with synthetic filters in lower concentrations.
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Krutmann J, Piquero-Casals J, Morgado-Carrasco D, Granger C, Trullàs C, Passeron T, Lim HW. Photoprotection for people with skin of colour: needs and strategies. Br J Dermatol 2023; 188:168-175. [PMID: 36763874 DOI: 10.1093/bjd/ljac046] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 09/02/2022] [Accepted: 10/06/2022] [Indexed: 01/09/2023]
Abstract
Skin of colour or pigmented skin has unique characteristics: it has a higher eumelanin-to-pheomelanin ratio, more mature melanosomes, an increased amount of melanin distributed in the upper layers of the epidermis, and more efficient DNA repair compared with lighter skin. However, individuals with skin of colour are at a significant risk of skin damage caused by ultraviolet radiation, including the development of photodermatoses and photoageing changes such as uneven skin tone, and are predisposed to pigmentary disorders. In fact, one of the most common conditions leading to dermatology consultations by patients with skin of colour is photoexacerbated pigmentary disorders. Unfortunately, individuals with skin of colour may be less prone to engage in photoprotective measures, including the use of sunscreens. Physicians are also less likely to prescribe sunscreens for them. There is thus a clear need for better education on photodamage and for more efficient and suitable photoprotection in populations with skin of colour. However, this need has thus far only partially been met, and the development of sunscreen products designed to provide optimal photoprotection for people with skin of colour remains a challenge. Targeted sunscreens for individuals with skin of colour require optimal cosmetic appeal (leaving no white residue and not disrupting skin tone). They should include broad-spectrum [ultraviolet (UV)B/UVA] protection with high sun protection factor, as well as protection against long-wave UVA (UVA1) and visible light, as these wavelengths are capable of inducing or augmenting pigmentary disorders. They may also contain depigmenting agents for patients with pigmentary disorders.
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Affiliation(s)
- Jean Krutmann
- IUF - Leibniz Research Institute for Environmental Medicine, Dusseldorf, Germany.,Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | | | - Daniel Morgado-Carrasco
- Dermatology Department, Hospital Clínic de Barcelona, Universitat de Barcelona, Barcelona, Spain
| | | | | | - Thierry Passeron
- University Côte d'Azur, CHU Nice, Department of Dermatology, Nice, France.,University Côte d'Azur, INSERM U1065, C3M, Nice, France
| | - Henry W Lim
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health, Detroit, MI, USA
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Seck S, Hamad J, Schalka S, Lim HW. Photoprotection in skin of color. Photochem Photobiol Sci 2023; 22:441-456. [PMID: 36227521 DOI: 10.1007/s43630-022-00314-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 09/25/2022] [Indexed: 10/17/2022]
Abstract
As populations in many parts of the world are projected to become more racially diverse over the coming decades, we must better understand the unique characteristics of the skin of populations with skin of color (SOC). This review aims to highlight important physiologic and clinical considerations of photoprotection in SOC. Ultraviolet radiation and visible light affect dark and light skin differently. SOC populations have historically not been informed on photoprotection to the same degree as their light skinned counterparts. This has exacerbated dermatologic conditions in which SOC populations are disproportionately affected, such as hyperpigmentary disorders. Patients should be encouraged to utilize multiple methods of photoprotection, ranging from avoidance of sunlight during peak intensity hours, seeking shade, wearing sun-protective clothing and wide-brimmed hat, and applying sunscreen. Ideal sunscreens for SOC populations include those with UVA-PF/SPF ratios ≥ 2/3 and tinted sunscreens to protect against VL. Although there have been increased efforts recently, more research into photoprotection for SOC and targeted public education are required to disseminate photoprotection resources that are patient-centered and evidence-based.
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Affiliation(s)
- Sokhna Seck
- Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Judy Hamad
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health, Henry Ford Medical Center - New Center One, 3031 West Grand Blvd, Suite 800, Detroit, MI, 48202, USA
| | | | - Henry W Lim
- Photomedicine and Photobiology Unit, Department of Dermatology, Henry Ford Health, Henry Ford Medical Center - New Center One, 3031 West Grand Blvd, Suite 800, Detroit, MI, 48202, USA.
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Giustina A, Bouillon R, Dawson-Hughes B, Ebeling PR, Lazaretti-Castro M, Lips P, Marcocci C, Bilezikian JP. Vitamin D in the older population: a consensus statement. Endocrine 2023; 79:31-44. [PMID: 36287374 PMCID: PMC9607753 DOI: 10.1007/s12020-022-03208-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 09/21/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND This paper reports results from the 5th International Conference "Controversies in Vitamin D" that was held in Stresa, Italy, 15-18 September 2021. The conference is part of this series that started in 2017 and has been conducted annually since. The objective of these conferences is to identify timely and controversial topics related to Vitamin D. Dissemination of the results of the conference through publications in peer-reviewed journals is an important means by which the most up to date information can be shared with physicians, investigators, and other health care professionals. Vitamin D and aging, the subject of this paper was featured at the conference. METHODS Participants were selected to review available literature on assigned topics related to vitamin D and aging and to present their findings with illustrative material, the intent of which was to stimulate discussion and to arrive at a consensus. The presentations were directed towards the following areas: impact of aging on vitamin D production and levels; skeletal effects of vitamin D deficiency in the older population; falls and vitamin D in the aging; potential extra skeletal effects of vitamin D; and strategies to prevent vitamin D deficiency. A final topic was related to how vitamin D might influence the efficacy of vaccines for Covid-19. RESULTS Hypovitaminosis D can lead to several skeletal and extra-skeletal outcomes. Older adults are at risk for vitamin D deficiency as both production and metabolism of vitamin D change with aging due to factors, such as reduced sun exposure and reduced production capacity of the skin. Skeletal consequences of these age-related changes can include reduced bone mineral density, osteomalacia and fractures. Potential extra-skeletal effects can include added risks for falls, reduced muscle strength, diabetes, cancer, and cardiovascular disease. Strategies to avoid these vitamin D deficiency-related negative outcomes include sun exposure, food fortification, and supplementation. While aging does not diminish sufficient reserve capacity for cutaneous vitamin D production, concerns about skin cancers and practical matters for the institutionalized elderly limit this option. Supplementation with vitamin D is the best option either pharmacologically or through food fortification. Regardless of treatment strategies, interventions to restore sufficient vitamin D status will show positive results only in those who are truly deficient. Thus, treatment goals should focus on avoiding 25(OH)D serum levels <30 nmol/l, with a goal to reach levels >50 nmol/l. CONCLUSIONS The results of this conference has led to consensus on several issues. Vitamin D supplementation should be combined with calcium to reduce fractures in the older population. The goal for adequate Vitamin D status should be to reach a serum level of 25(OH)D >50 nmol/l. It appears that daily low-dose vitamin D regimens reduce the risk of falling, especially in the elderly, compared with infrequent, large bolus doses that may increase it. The role of Vitamin D supplementation on muscle strength remains to be clarified. On the other hand, supplementation decreases the risk of progression to T2D from prediabetes among those who are Vitamin Ddeficient. Of three possible strategies to establish vitamin D sufficiency - sunshine exposure, food fortification, and supplementation - the latter seems to be the most effective and practical in the aging population.
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Affiliation(s)
- Andrea Giustina
- Institute of Endocrine and Metabolic Sciences, San Raffaele Vita-Salute University and IRCCS Hospital, Milan, Italy
| | - Roger Bouillon
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Aging, Leuven, KU, Belgium
| | - Bess Dawson-Hughes
- Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA
| | - Peter R Ebeling
- Department of Medicine, School of Clinical Sciences, Monash University, Clayton, VIC, 3168, Australia
| | - Marise Lazaretti-Castro
- Division of Endocrinology, Bone and Mineral Diseases Unit, Department of Internal Medicine, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
| | - Paul Lips
- Department of Internal Medicine, Endocrine Section, Amsterdam University Medical Centre, Location VUMC, Amsterdam, The Netherlands
| | - Claudio Marcocci
- Department of Clinical and Internal Medicine, University of Pisa and Endocrine Unit 2, University Hospital of Pisa, Pisa, Italy
| | - John P Bilezikian
- Department of Medicine, Vagelos College of Physicians and Surgeons, New York City, NY, USA.
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Fletcher J, Brown M, Hewison M, Swift A, Cooper SC. Prevalence of vitamin D deficiency and modifiable risk factors in patients with Crohn's disease: A prospective observational study. J Adv Nurs 2023; 79:205-214. [PMID: 36281072 DOI: 10.1111/jan.15476] [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: 05/23/2022] [Revised: 09/20/2022] [Accepted: 10/12/2022] [Indexed: 12/15/2022]
Abstract
AIMS To determine the prevalence of vitamin D deficiency in adults with Crohn's Disease (CD) in Birmingham, UK (latitude 52.4°N, -1.9°E) and identify modifiable risk factors. DESIGN/METHOD A nurse-led, single-centre, prospective study was conducted over 5 months in 2019 and 2020 in outpatients with CD, at a tertiary referral hospital in Birmingham UK. Vitamin D (25OHD) levels were measured at a single timepoint by a dried blood spot sample. Modifiable risk factor data were collected including intake of vitamin D-containing foods, use of vitamin D supplements, sun exposure and current smoking. RESULTS Total 150 participants (53.3% male, 79.3% white British). Vitamin D deficiency (25OHD <50 nmol/L) was found in 53.3%. 32.7% of participants took over-the-counter vitamin D supplements and 20.7% used prescribed supplements. We found that diets were generally poor in relation to vitamin D-rich foods. In terms of sun exposure, few (18%) had visited a sunny country recently, and few (6%) covered their whole body with clothing. Most used High Sun Protection Factor (80%) with a median grade of SPF 45. CONCLUSION Patients with CD are at high risk of vitamin D deficiency as defined by 25OHD < 50 nmol/L, with the prevalence of deficiency being highest during the winter months. Patients with CD in the UK are unlikely to maintain vitamin D levels from sunlight exposure, dietary sources or over-the-counter supplements. IMPACT Patients with Crohn's Disease are at high risk of developing vitamin D deficiency but there is little data from the UK at this latitude. We demonstrate the prevalence and severity of vitamin D deficiency in people with Crohn's Disease in the UK. The prevalence of vitamin D deficiency in this group is high and warrants monitoring by nurses and clinical teams. Nurses and clinical teams should consider strategies for vitamin D supplementation in patients with Crohn's Disease.
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Affiliation(s)
- Jane Fletcher
- Nutrition Nurses, University Hospital Birmingham NHS Trust, Queen Elizabeth Hospital Birmingham, Birmingham, UK.,School of Nursing, Institute of Clinical Sciences, University of Birmingham, Birmingham, UK
| | - Michaela Brown
- Liverpool Clinical Trials Centre, Alder Hey Children's NHS Trust, Liverpool, UK
| | - Martin Hewison
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| | - Amelia Swift
- School of Nursing, Institute of Clinical Sciences, University of Birmingham, Birmingham, UK
| | - Sheldon C Cooper
- Department of Gastroenterology, University Hospital Birmingham NHS Trust, Queen Elizabeth Hospital Birmingham, Birmingham, UK
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Abstract
The ubiquity of vitamin D metabolising enzymes and vitamin D receptors in mammalian organisms suggests that vitamin D has pleiotropic effects. There are quite a few studies indicating the anticancer, cardioprotective and antidiabetic effects of vitamin D; however, the best-documented actions of vitamin D are the regulation of Ca-phosphate balance and its effect on immune function.Vitamin D levels in organisms are modulated by many environmental and non-environmental factors. One potential factor that may influence vitamin D levels and effects is the sex of the individuals studied. This review focuses on the scientific evidence indicating different synthesis and metabolism of vitamin D in females and males, mainly from PubMed database sources. The article verifies the sex differences in vitamin D levels reported around the world. Moreover, the different effects of vitamin D on the musculoskeletal, cardiovascular, nervous and immune systems, as well as cancer in males and females, were discussed.Most studies addressing sex differences in vitamin D levels and effects are observational studies with conflicting results. Therefore, carefully designed clinical trials and experiments on animal models should be carried out to determine the role of non-environmental factors that may differentiate vitamin D levels in females and males.
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Pedersen JE, Hansen J. Colorectal cancer and occupational exposure to solar ultraviolet B radiation in Denmark. ENVIRONMENTAL RESEARCH 2022; 215:114260. [PMID: 36084677 DOI: 10.1016/j.envres.2022.114260] [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: 04/18/2022] [Revised: 08/15/2022] [Accepted: 08/31/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVES Solar ultraviolet B radiation (UV) may reduce the risk of cancer, including colorectal cancer (CRC), although the evidence is inconclusive. To contribute with evidence, the present largescale register-based nested case-control study aimed to investigate the association between occupational UV exposure and CRC in Denmark. METHODS The Danish Cancer Registry was used to identify a total of 12,268 men and women diagnosed with primary CRC before age 70. Five controls matched on year of birth and sex, alive and free of CRC at the time of diagnosis of the index case were randomly selected from The Danish Civil Registration System. Occupational UV exposure was assessed by obtainment of full employment history from the Danish Supplementary Pension Fund Register, which was linked to a job exposure matrix. Conditional logistic regression was used to estimate odds ratios (ORs) with corresponding 95% confidence intervals. RESULTS We observed an inverse association between longer duration of UV exposure and CRC in women (≥20 years: OR = 0.84, 95% CI: 0.69-1.03), while no noteworthy associations were observed in men. When focusing on colon cancer only, longer duration of UV exposure (>20 years: OR = 0.92, 95% CI: 0.83-1.01) and higher cumulative UV exposure (highest exposure category: OR = 0.90, 95% CI: 0.83-0.99) were indicated to lower the risk in the study population including both men and women, although the risk reduction appeared to be more evident for women. No consistent risk patterns were observed for rectal cancer. CONCLUSIONS The present study suggests a modest protective effect from long-term occupational UV exposure on the risk of colon cancer. The effect may be greater in women and these findings need further attention in future large-scale studies.
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Affiliation(s)
| | - Johnni Hansen
- Danish Cancer Society Research Center, Danish Cancer Society, Copenhagen, Denmark
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35
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Review on photoprotection: a clinician’s guide to the ingredients, characteristics, adverse effects, and disease-specific benefits of chemical and physical sunscreen compounds. Arch Dermatol Res 2022; 315:735-749. [PMID: 36443500 DOI: 10.1007/s00403-022-02483-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 09/15/2022] [Accepted: 11/15/2022] [Indexed: 11/29/2022]
Abstract
Photoprotection is a critical health prevention strategy to reduce the deleterious effects of ultraviolet radiation (UVR) and visible light (VL). Methods of photoprotection are reviewed in this paper, with an emphasis on sunscreen. The most appropriate sunscreen formulation for personal use depends on several factors. Active sunscreen ingredients vary in their protective effect over the UVR and VL spectrum. There are dermatologic diseases that cause photosensitivity or that are aggravated by a particular action spectrum. In these situations, sunscreen suggestions can address the specific concern. Sunscreen does not represent a single entity. Appropriate personalized sunscreen selection is critical to improve compliance and clinical outcomes. Health care providers can facilitate informed product selection with awareness of evolving sunscreen formulations and counseling patients on appropriate use. This review aims to summarize different forms of photoprotection, discuss absorption of sunscreen ingredients, possible adverse effects, and disease-specific preferences for chemical, physical or oral agents that may decrease UVR and VL harmful effects.
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Das A, Chakraborty P, Khatiwara B, Dhakal J, Sarangi S, Singh S, Chakrabarti S. Herbal microsponge incorporated sunscreen gel: A novel strategy. Biomedicine (Taipei) 2022. [DOI: 10.51248/.v42i5.2016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Different dermatological disorders have different effects on the lives of patients. Recently microsponge formulations have been used to treat several dermatological complications. Microsponges are basically tiny sponge like spherical particles with porous surface having valuable and attractive effect on topical delivery. The side effect of the used drug can be reduced, bioavailability can be increased, and the drug release can be modified. Microsponges can be used in different bases like gel, lotion, ointment and even in powder form. Microsponges used in sunscreen gel are now very popular. Excessive UV exposure leads to different pathological conditions like skin burns, erythema, skin carcinogenesis, etc., The microsponge sunscreen gel protects our skin from all these skin problems and most importantly, with a very less amount of side effects compared to others. Moreover, microsponges are very much cost effective, easy to handle, can deliver minimum dose of drug and enhance the stability.
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Patel S, Patel S, Shah RM, Doshi S, Shah S, Lio PA. Effects of sun protection on serum vitamin D deficiency. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2022. [DOI: 10.1111/phpp.12838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 09/20/2022] [Accepted: 09/29/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Shrey Patel
- University of Miami Miller School of Medicine Miami Florida USA
| | - Shiv Patel
- Northwestern University Feinberg School of Medicine Chicago Illinois USA
| | - Rohan M. Shah
- Northwestern University Feinberg School of Medicine Chicago Illinois USA
| | - Sahil Doshi
- Northwestern University Feinberg School of Medicine Chicago Illinois USA
| | - Sareena Shah
- University of Missouri‐Kansas City School of Medicine Kansas City Missouri USA
| | - Peter A. Lio
- Northwestern University Feinberg School of Medicine Chicago Illinois USA
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da Silveira EA, Moura LDANE, Castro MCR, Kac G, Hadler MCCM, Noll PRES, Noll M, Rezende ATDO, Delpino FM, de Oliveira C. Prevalence of Vitamin D and Calcium Deficiency and Insufficiency in Women of Childbearing Age and Associated Risk Factors: A Systematic Review and Meta-Analysis. Nutrients 2022; 14:nu14204351. [PMID: 36297034 PMCID: PMC9612098 DOI: 10.3390/nu14204351] [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: 08/23/2022] [Revised: 10/01/2022] [Accepted: 10/01/2022] [Indexed: 11/25/2022] Open
Abstract
Vitamin D deficiency and insufficiency as well as low serum calcium levels can trigger negative health outcomes in women of childbearing age. Therefore, we aimed to estimate the prevalence of serum vitamin D and calcium deficiencies and insufficiencies and associated risk factors in Brazilian women of childbearing age and to assess whether there are differences in prevalence according to regions of the country and the presence or absence of pregnancy. The systematic literature review was performed using the following databases: PubMed, LILACS, Embase, Scopus, and Web of Science. Cross-sectional, cohort, and intervention studies were included. Among pregnant women, the prevalence of vitamin D deficiency ranged from 0% to 27% and of vitamin D insufficiency from 33.9% to 70.4%. Among non-pregnant women, the prevalence of vitamin D deficiency ranged from 0% to 41.7% and of vitamin D insufficiency from 38.5% to 69.3%. We found a high prevalence of vitamin D deficiency and insufficiency in women of childbearing age, with insufficiency affecting more than half of these women. The highest prevalence of vitamin D deficiency and insufficiency was observed in the South region. It was not possible to assess the prevalence and factors associated with calcium deficiency.
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Affiliation(s)
- Erika Aparecida da Silveira
- Health Science Graduate Program, Faculty of Medicine, Federal University of Goiás, Goiânia 74605-050, GO, Brazil
- Department of Epidemiology and Public Health, University College London, London WC1E 6BT, UK
- Correspondence: ; Tel.: +55-6232096146
| | | | - Maria Clara Rezende Castro
- Health Science Graduate Program, Faculty of Medicine, Federal University of Goiás, Goiânia 74605-050, GO, Brazil
| | - Gilberto Kac
- Nutritional Epidemiology Observatory, Department of Social and Applied Nutrition, Institute of Nutrition Josué de Castro, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Maria Claret Costa Monteiro Hadler
- Health Science Graduate Program, Faculty of Medicine, Federal University of Goiás, Goiânia 74605-050, GO, Brazil
- Graduate Program in Nutrition and Health, Faculty of Nutrition, Federal University of Goiás, Goiânia 74605-050, GO, Brazil
| | - Priscilla Rayanne E. Silva Noll
- Department of Obstetrics and Gynaecology, University of São Paulo, São Paulo 05403-000, SP, Brazil
- Campus Ceres, Federal Institute Goiano, Ceres 76300-000, GO, Brazil
| | - Matias Noll
- Health Science Graduate Program, Faculty of Medicine, Federal University of Goiás, Goiânia 74605-050, GO, Brazil
- Campus Ceres, Federal Institute Goiano, Ceres 76300-000, GO, Brazil
| | | | - Felipe Mendes Delpino
- Postgraduate Program in Nursing, Federal University of Pelotas, Pelotas 96010-610, RS, Brazil
| | - Cesar de Oliveira
- Department of Epidemiology and Public Health, University College London, London WC1E 6BT, UK
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Szymczak-Tomczak A, Ratajczak AE, Kaczmarek-Ryś M, Hryhorowicz S, Rychter AM, Zawada A, Słomski R, Dobrowolska A, Krela-Kaźmierczak I. Pleiotropic Effects of Vitamin D in Patients with Inflammatory Bowel Diseases. J Clin Med 2022; 11:jcm11195715. [PMID: 36233580 PMCID: PMC9573215 DOI: 10.3390/jcm11195715] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/18/2022] [Accepted: 09/21/2022] [Indexed: 12/07/2022] Open
Abstract
The multifaceted activity of vitamin D in patients with inflammatory bowel disease (IBD) presents a challenge for further research in this area. Vitamin D is involved in the regulation of bone mineral metabolism, it participates in the regulation of the immune system, and it is an underlying factor in the pathogenesis of IBD. Additionally, vitamin D affects Th1 and Th2 lymphocytes, influencing the release of cytokines and inhibiting tumor necrosis factor (TNF) expression and the wnt/β-catenin pathway. As far as IBDs are concerned, they are associated with microbiota dysbiosis, abnormal inflammatory response, and micronutrient deficiency, including vitamin D hypovitaminosis. In turn, the biological activity of active vitamin D is regulated by the vitamin D receptor (VDR) which is associated with several processes related to IBD. Therefore, in terms of research on vitamin D supplementation in IBD patients, it is essential to understand the metabolic pathways and genetic determinants of vitamin D, as well as to identify the environmental factors they are subject to, not only in view of osteoporosis prevention and therapy, but primarily concerning modulating the course and supplementation of IBD pharmacotherapy.
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Affiliation(s)
- Aleksandra Szymczak-Tomczak
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, 61-701 Poznan, Poland
- Correspondence: (A.S.-T.); (A.E.R.); Tel.: +48-8691-343 (A.S.-T.); +48-667-385-996 (A.E.R.); Fax: +48-8691-686 (A.E.R.)
| | - Alicja Ewa Ratajczak
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, 61-701 Poznan, Poland
- Correspondence: (A.S.-T.); (A.E.R.); Tel.: +48-8691-343 (A.S.-T.); +48-667-385-996 (A.E.R.); Fax: +48-8691-686 (A.E.R.)
| | - Marta Kaczmarek-Ryś
- Institute of Human Genetics, Polish Academy of Sciences, 60-479 Poznan, Poland
| | - Szymon Hryhorowicz
- Institute of Human Genetics, Polish Academy of Sciences, 60-479 Poznan, Poland
| | - Anna Maria Rychter
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, 61-701 Poznan, Poland
| | - Agnieszka Zawada
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, 61-701 Poznan, Poland
| | - Ryszard Słomski
- Institute of Human Genetics, Polish Academy of Sciences, 60-479 Poznan, Poland
| | - Agnieszka Dobrowolska
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, 61-701 Poznan, Poland
| | - Iwona Krela-Kaźmierczak
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, 61-701 Poznan, Poland
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Ramírez-Gamboa D, Díaz-Zamorano AL, Meléndez-Sánchez ER, Reyes-Pardo H, Villaseñor-Zepeda KR, López-Arellanes ME, Sosa-Hernández JE, Coronado-Apodaca KG, Gámez-Méndez A, Afewerki S, Iqbal HMN, Parra-Saldivar R, Martínez-Ruiz M. Photolyase Production and Current Applications: A Review. Molecules 2022; 27:molecules27185998. [PMID: 36144740 PMCID: PMC9505440 DOI: 10.3390/molecules27185998] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/20/2022] [Accepted: 08/24/2022] [Indexed: 11/16/2022] Open
Abstract
The photolyase family consists of flavoproteins with enzyme activity able to repair ultraviolet light radiation damage by photoreactivation. DNA damage by the formation of a cyclobutane pyrimidine dimer (CPD) and a pyrimidine-pyrimidone (6-4) photoproduct can lead to multiple affections such as cellular apoptosis and mutagenesis that can evolve into skin cancer. The development of integrated applications to prevent the negative effects of prolonged sunlight exposure, usually during outdoor activities, is imperative. This study presents the functions, characteristics, and types of photolyases, their therapeutic and cosmetic applications, and additionally explores some photolyase-producing microorganisms and drug delivery systems.
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Affiliation(s)
- Diana Ramírez-Gamboa
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
| | | | | | - Humberto Reyes-Pardo
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
| | | | | | - Juan Eduardo Sosa-Hernández
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
| | - Karina G. Coronado-Apodaca
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
| | - Ana Gámez-Méndez
- Department of Basic Sciences, Universidad de Monterrey, Av. Ignacio Morones Prieto 4500 Pte, San Pedro Garza Garcia 66238, Mexico
| | - Samson Afewerki
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
- Division of Gastroenterology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Hafiz M. N. Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
| | - Roberto Parra-Saldivar
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
- Correspondence: (R.P.-S.); (M.M.-R.)
| | - Manuel Martínez-Ruiz
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
- Correspondence: (R.P.-S.); (M.M.-R.)
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Young AR, Schalka S, Temple RC, Simeone E, Sohn M, Kohlmann C, Morelli M. Innovative digital solution supporting sun protection and vitamin D synthesis by using satellite-based monitoring of solar radiation. Photochem Photobiol Sci 2022; 21:1853-1868. [DOI: 10.1007/s43630-022-00263-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 06/30/2022] [Indexed: 11/30/2022]
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Martelli M, Salvio G, Santarelli L, Bracci M. Shift Work and Serum Vitamin D Levels: A Systematic Review and Meta-Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19158919. [PMID: 35897284 PMCID: PMC9332580 DOI: 10.3390/ijerph19158919] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 02/01/2023]
Abstract
Vitamin D deficiency and insufficiency are highly prevalent conditions worldwide due to several factors, including poor sun exposure. Shift workers may be exposed to the risk of hypovitaminosis D due to fewer opportunities for sunlight exposure compared to day workers. A systematic review of the PubMed, SCOPUS, and EMBASE databases was conducted according to the Preferred Reporting Items for Systemic Reviews and Meta-Analyses (PRISMA) statement to investigate the effect of shift work on vitamin D levels. Mean differences (MD) and 95% confidence intervals (CI) of serum 25-OH-D levels in shift workers and non-shift workers were calculated. A total of 13 cross-sectional studies were included in the meta-analysis. We found significantly lower levels of serum 25-OH-D in shift workers compared with non-shift workers (MD: −1.85, 95% CI [−2.49 to −1.21]). Heterogeneity among included studies was high (I2 = 89%, p < 0.0001), and neither subgroup analysis nor meta-regression were able to identify specific sources of the heterogeneity that may be related to the different characteristics of shift work among studies. The monitoring of serum vitamin D levels and prompt correction of any deficiencies should be considered in shift workers. Notably, since a large part of the observations are derived from Koreans, larger epidemiological studies are needed in other populations.
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Affiliation(s)
- Margherita Martelli
- Occupational Health, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60126 Ancona, Italy;
| | - Gianmaria Salvio
- Endocrinology Clinic, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60126 Ancona, Italy;
| | - Lory Santarelli
- Occupational Health, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60126 Ancona, Italy;
- Correspondence: (L.S.); (M.B.)
| | - Massimo Bracci
- Occupational Health, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, 60126 Ancona, Italy;
- Correspondence: (L.S.); (M.B.)
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43
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Tsugawa N, Kuwabara A, Ogasawara H, Nishino M, Nakagawa K, Kamao M, Hasegawa H, Tanaka K. Vitamin D Status in Japanese Young Women in 2016-2017 and 2020: Seasonal Variation and the Effect of Lifestyle Including Changes Caused by the COVID-19 Pandemic. J Nutr Sci Vitaminol (Tokyo) 2022; 68:172-180. [PMID: 35768248 DOI: 10.3177/jnsv.68.172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Avoidance of sunlight and self-restraint due to the COVID-19 pandemic may contribute to reduced vitamin D status. This study provides comparable data on vitamin D status in Japanese young women and assesses the effect of lifestyle, including changes caused by the COVID-19 pandemic, on vitamin D status. In study 1, 39 young healthy Japanese women aged 21-25 y were recruited from May 2016-June 2017. Serum 25-hydroxyvitamin D (25OHD) concentration and diet and lifestyle information were obtained from participants each month (n=124). In study 2, using the same parameters as study 1, young women aged 21-23 y (n=10) were recruited in September 2020. In the results of study 1, we found the frequencies of vitamin D deficiency (25OHD<20 ng/mL) in spring, summer, fall, and winter were 90.5%, 62.5%, 81.5%, and 91.3%, respectively. The substantial difference of serum 25OHD concentration was obtained in spring (Δ3.6 ng/mL) and summer (Δ5.1 ng/mL) depending on the frequency of sunscreen use (0-2 d/wk, 3-7 d/wk). In study 2, serum 25OHD concentration in September 2020 was extremely lower than in September 2016 (13.2 ng/mL vs. 21.7 ng/mL). The number of days spent outside in 2020 decreased drastically compared with 2019. In conclusion, vitamin D deficiency was highly common in Japanese women in their early 20s, and frequent sunscreen use contributed to low vitamin D status. Moreover, because the decrease in days outside due to the COVID-19 pandemic obviously resulted in a decline in vitamin D status, both appropriate sunbathing and increased dietary vitamin D intake are recommended to young women.
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Affiliation(s)
- Naoko Tsugawa
- Department of Health and Nutrition, Osaka Shoin Women's University.,Division of Human Dietics, Graduate School of Human Science, Osaka Shoin Women's University
| | - Akiko Kuwabara
- Department of Nutrition, Graduate School of Human Life and Ecology, Osaka Metropolitan University
| | - Honami Ogasawara
- Department of Health and Nutrition, Osaka Shoin Women's University
| | - Mayu Nishino
- Division of Human Dietics, Graduate School of Human Science, Osaka Shoin Women's University
| | | | - Maya Kamao
- Extension Center, Kobe Pharmaceutical University
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Dickerson RN, Turner SC, Holmes WL, Van Matre ET, Swanson JM, Byerly S, Filiberto DM, Fischer PE. Reduction in Hypercalcemia Following Readjustment of Target Serum 25-Hydroxy Vitamin D Concentration during Cholecalciferol Therapy in Vitamin D-Deficient Critically Ill Patients. Nutrients 2022; 14:nu14081650. [PMID: 35458212 PMCID: PMC9032836 DOI: 10.3390/nu14081650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/07/2022] [Accepted: 04/13/2022] [Indexed: 11/23/2022] Open
Abstract
The intent of this study was an evaluation of our effort to reduce the incidence of hypercalcemia in critically ill vitamin D-deficient patients with multiple traumatic injuries given cholecalciferol. Vitamin D deficiency was defined as a serum 25-hydroxy vitamin D concentration (25-OH vit D) of <20 ng/mL. Adult patients (>17 years of age) were given 10,000 IU of cholecalciferol daily with an intended target 25-OH vit D of >19.9 ng/mL. These patients were compared to a historical control group that underwent therapy with a higher target of >29.9 ng/mL. Patients received cholecalciferol via the feeding tube along with enteral nutrition (EN) until the target 25-OH vit D was achieved, EN discontinued, the nutrition support service signed off the patient, or the patient was discharged from the TICU. Patients were included if two consecutive weekly 25-OH vit D were measured. One hundred and three critically ill trauma patients were retrospectively studied. Fifty were given cholecalciferol therapy with the new lower target 25-OH vit D, and 53 were from a historical cohort aiming for the higher target. Hypercalcemia (serum ionized calcium concentration > 1.32 mmol/L) was reduced from 40% (21 out of 53 patients) to 4% (2 out of 50 patients; p < 0.001). None of the hypercalcemic patients were symptomatic. Readjustment of target 25-OH vit D concentration resulted in a ten-fold decrease in the rate of hypercalcemia and improved the safety of cholecalciferol therapy for critically ill patients with traumatic injuries.
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Affiliation(s)
- Roland N. Dickerson
- Department of Clinical Pharmacy and Translational Science, University of Tennessee College of Pharmacy, Memphis, TN 38163, USA; (E.T.V.M.); (J.M.S.)
- Correspondence:
| | | | - Whitney L. Holmes
- Department of Pharmacy, Regional One Health, Memphis, TN 38103, USA;
| | - Edward T. Van Matre
- Department of Clinical Pharmacy and Translational Science, University of Tennessee College of Pharmacy, Memphis, TN 38163, USA; (E.T.V.M.); (J.M.S.)
| | - Joseph M. Swanson
- Department of Clinical Pharmacy and Translational Science, University of Tennessee College of Pharmacy, Memphis, TN 38163, USA; (E.T.V.M.); (J.M.S.)
| | - Saskya Byerly
- Department of Surgery, University of Tennessee Health Science Center, Memphis, TN 38163, USA; (S.B.); (D.M.F.); (P.E.F.)
| | - Dina M. Filiberto
- Department of Surgery, University of Tennessee Health Science Center, Memphis, TN 38163, USA; (S.B.); (D.M.F.); (P.E.F.)
| | - Peter E. Fischer
- Department of Surgery, University of Tennessee Health Science Center, Memphis, TN 38163, USA; (S.B.); (D.M.F.); (P.E.F.)
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Ab Malik N, Mohamad Yatim S, Mokhtar KN, Md Ramli SNR, Dissanayaka WL, Pelekos G, McGrath C. ORAL HEALTH AND VITAMIN D IN ADULT - A SYSTEMATIC REVIEW. Br J Nutr 2022; 129:1-29. [PMID: 35416136 DOI: 10.1017/s0007114522000964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This systematic review aimed to provide a synthesis of the evidence relating to how the provision of Vitamin D supplements influences oral health status. An electronic database search was performed across six databases using a standardised search strategy. The PICO framework was used to define the review question. The screening and selection followed PRISMA process. The quality of reporting was assessed using CONSORT guidelines, and the bias was assessed using the revised Cochrane tool RoB2. A total of 1812 studies were retrieved. 1427 studies were excluded due to unmet inclusion criteria. Full texts of 75 potential studies were retrieved and ultimately six studies met the inclusion criteria. There were limitations in the quality of reporting of studies (between 49% and 73%). 70% of the risk of bias items were in the low risks category. Vitamin D interventions varied with respect to dosage and duration. Qualitative syntheses identified significantly better oral health outcomes. Heterogeneity of study design, intervention and outcomes precluded quantitative synthesis. Few clinical trials investigated the effect of Vitamin D supplementation on oral health. There is considerable heterogeneity among studies interventions and oral health outcomes. Quality of reporting of studies have limitations and there is evidence of study biases. Nonetheless, qualitative synthesis of the evidence suggest that Vitamin D supplements improve oral health outcomes, particularly periodontal health. Calcium may also play a significant role. Further high-quality trials are required of comparable Vitamin D supplements with similar oral health outcomes focus to inform quantitative synthesis of the evidence.
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Affiliation(s)
- Normaliza Ab Malik
- Faculty of Dentistry, Universiti Sains Islam Malaysia, Level 15, Menara B, MPAJ, Jalan Pandan Utama, Pandan Indah, Kuala Lumpur 55100, Malaysia, Email Address: /, Phone number: +6 0342891176/ 0126075031
| | - Sa'ari Mohamad Yatim
- Department of Rehabilitation Medicine, Hospital Serdang, Kajang 43000, Selangor, Malaysia.
| | | | - Siti Nur Rasyidah Md Ramli
- Faculty of Dentistry, Universiti Sains Islam Malaysia, Level 15, Menara B, MPAJ, Jalan Pandan Utama, Pandan Indah, Kuala Lumpur 55100, Malaysia. Email Address
| | - Waruna Lakmal Dissanayaka
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, 34 Hospital Road, Sai Ying Pun, Hong Kong. Email :
| | - George Pelekos
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, 34 Hospital Road, Sai Ying Pun, Hong Kong. Email :
| | - Colman McGrath
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, 34 Hospital Road, Sai Ying Pun, Hong Kong. Email :
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Study of NBT-Pluronic F-127 Gels as 1D UV Radiation Dosimeters for Measurement of Artificial Light Sources. MATERIALS 2022; 15:ma15072370. [PMID: 35407702 PMCID: PMC8999834 DOI: 10.3390/ma15072370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/18/2022] [Accepted: 03/21/2022] [Indexed: 12/04/2022]
Abstract
This work reports on radiochromic dosimeters for 1D UV light measurements. The dosimeter is composed of a 25% Pluronic F–127 that forms a physical gel matrix and nitro blue tetrazolium chloride (NBT) as a radiation-sensitive compound. This dosimeter was exposed to UVA, UVB and UVC radiation, and the radiochromic reactions were followed with reflectance spectrophotometry including changes in light reflectance and color coordinates in the CIELAB color system. The exposition of dosimeters to all UV radiation caused color changes from pale yellow to dark violet, and its intensity increased with increasing absorbed dose. The effects of NBT concentration and UV radiation type on the dose–response of the dosimeters were also examined. The results obtained reveal that the dosimeters are the least sensitive to irradiation with UVC and the most sensitive to irradiation with UVB (e.g., dosimeter with 2 g/dm3 of NBT was characterized by the following parameters: the threshold dose 0.1 J/cm2; the dose sensitivity −5.97 ± 0.69 cm2/J; the linear dose range 0.1–2.5 J/cm2; the dynamic dose range was equal to 0.1–3 J/cm2). The results obtained reveal that the NBT–Pluronic F–127 dosimeters can be potentially useful as 1D sensors for artificial UV radiation sources measurements.
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47
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[Sunscreens of the future: challenges and opportunities]. Hautarzt 2022; 73:257-265. [PMID: 35258659 DOI: 10.1007/s00105-022-04959-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/26/2022] [Indexed: 10/18/2022]
Abstract
Sunscreens provide excellent protection against erythema and against chronic damage such as photoaging and skin cancer. Today's challenges concern safety of the products and improved methods for standardizing the evaluation of their efficacy. Other important topics are the further development of sunscreen products, as well as personalization of use. Personalized sun protection based on the phenotype, the genetic profiles and moreover the skin's microbiome - all linked to the identification of certain consumer susceptibility factors - is an exciting new area of research. In particular, the expansion with innovative topical agents such as DNA repair liposomes in improved galenic formulations with UV filters tailored to the skin phototype and new topical antioxidants could in future provide even more comprehensive sun protection. New antioxidants and other agents such as nicotinamide could increase systemic photoprevention. Sustainability will also be an important aspect to protect consumers, but also the environment (i.e. especially marine wildlife) from toxic effects of sunscreens.
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Abstract
Photoprotection behaviors can mitigate skin damage caused by ultraviolet radiation, and common methods include seeking shade, avoiding sun exposure during peak daylight hours, wearing sun-protective clothing, applying sunscreen, and using sunglasses. While the role of sun protection in preventing sunburns, photoaging, and skin cancer is well established in fair-skinned populations, individuals with skin of color (SOC) are presumed to suffer fewer negative effects from solar radiation. Thus, the importance of photoprotection in this population is understudied and may be underestimated. In SOC populations, sun exposure is known to cause pigmentary disorders, photoaging, and basal cell carcinoma (BCC), highlighting the potential benefits of photoprotection. Although SOC populations tend to practice photoprotection by seeking shade and wearing sun-protective clothing, survey and interview-based studies have consistently found relatively low use of sunscreen among these populations. Common motivators for photoprotection in individuals with SOC include preventing sunburn and pigmentation, with the prevention of skin cancer being a less important reason. As a skin cancer risk behavior, indoor tanning is relatively rare in SOC populations, but its use may increase with acculturation to US norms. While more studies are necessary to clarify whether photoprotection behaviors may decrease skin cancer-related mortality in SOC populations, regular dermatologic care and counseling on photoprotection remain essential in patients with SOC for overall skin health.
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Affiliation(s)
- Jerry Tsai
- Department of Dermatology, Johns Hopkins University School of Medicine, 601 N Caroline Street, Suite 8060C, Baltimore, MD, 21287, USA
| | - Anna L Chien
- Department of Dermatology, Johns Hopkins University School of Medicine, 601 N Caroline Street, Suite 8060C, Baltimore, MD, 21287, USA.
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49
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Addor FAS, Barcaui CB, Gomes EE, Lupi O, Marçon CR, Miot HA. Sunscreen lotions in the dermatological prescription: review of concepts and controversies. An Bras Dermatol 2022; 97:204-222. [PMID: 35039207 PMCID: PMC9073257 DOI: 10.1016/j.abd.2021.05.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/01/2021] [Accepted: 05/11/2021] [Indexed: 11/28/2022] Open
Abstract
The skin is regularly exposed to several environmental aggressions, including solar radiation, whose biological effects can induce sunburn, dyschromia, skin aging and cancer. Among the photoprotection measures, sunscreens comprise a relevant part of the strategy aimed to prevent solar radiation damage and, for effective action, the patient must adhere to the product use and the latter, in turn, must follow technical parameters to promote adequate protection. This review article brings together the most current and relevant concepts about photoprotection for dermatological use, including the challenges for their formulation, the risks of certain photoprotective active substances for individual and environmental safety and the importance of stringency in determining the product efficacy, considering the regulatory aspects, highlighting relevant differences between Brazil and other countries. Thus, when assessing a sunscreen, not only the visual aspects and sensory perception will be immediately evaluated, but also the quality and suitability of the vehicle, the chemical composition of the formulation, the environmental risks, the photostability of the screening system, and the measurement of its protection spectrum. Technical knowledge of sunscreens can help dermatologists in this important role of educating patients about the best photoprotective strategies in each situation.
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Affiliation(s)
| | - Carlos Baptista Barcaui
- Dermatology, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Dermatology, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | - Elimar Elias Gomes
- Cancer Center, Beneficência Portuguesa de São Paulo, São Paulo, SP, Brazil
| | - Omar Lupi
- Dermatology Service, Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Rio de Janeiro, RJ, Brazil; Policlínica Geral do Rio de Janeiro (PGRJ), Rio de Janeiro, RJ, Brazil; Clinical Immunology Service, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | | | - Hélio Amante Miot
- Dermatology Department, Faculty of Medicine, Universidade Estadual Paulista, Botucatu, SP, Brazil
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Brogniez C, Doré JF, Auriol F, Cesarini P, Minvielle F, Deroo C, Catalfamo M, Metzger JM, Da Conceicao P. Erythemal and vitamin D weighted solar UV dose-rates and doses estimated from measurements in mainland France and on Réunion Island. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2021; 225:112330. [PMID: 34678614 DOI: 10.1016/j.jphotobiol.2021.112330] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 09/06/2021] [Accepted: 10/04/2021] [Indexed: 06/13/2023]
Abstract
Solar UV radiation causes beneficial and detrimental changes in human health. International and national Health agencies recommend avoiding sun exposure when the solar rays are strongest (typically 2 h before and after solar noon). In this study we detail and refine such recommendations. We estimated biologically-effective radiation (inductive of erythema and pre-vitamin D) using spectral solar UV radiation measurements on a horizontal plane at three French sites equipped with spectroradiometers: Villeneuve d'Ascq (VDA) (North of France); Observatoire de Haute-Provence (OHP) (French Southern Alps); and Saint-Denis de La Réunion (SDR) on Réunion Island, in the Indian Ocean. These sites are very different: VDA is a semi-urban site in a flat region, OHP a rural mountainous site and SDR a coastal urban site on a small mountainous island. Biologically active radiation was analyzed by studying erythema induction and measuring pre-vitamin D synthesis. Dose-rates, doses and times for sunburn induction and vitamin D production were derived. Regarding the level of vitamin D dose considered here (1000 IU), we found that at mainland sites time required for vitamin D synthesis was relatively long, even around solar noon, in winter months this could be 2-3 h for phototype II individuals exposing their face and hands. In the tropics vitamin D could always be synthesized in a reasonable time (e.g. 20 min in winter). By contrast, in summer, the required duration times (exposing face, hands, arms and legs) are very short, approximately 2-4 min on the mainland and 1 min in the tropics for phototype II individuals. In all skin phototypes the duration of sun exposure required to induce erythema was generally longer than that to produce vitamin D. These quantitative results, obtained using an instrument measuring on a horizontal plane and with an unobstructed view, do not represent realistic values for human exposure. To account for realistic human body exposure, received doses and times of exposure were adjusted. Our study shows that, mostly in summer, the time periods where limited solar exposure is recommended should be extended, especially at low latitude locations.
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Affiliation(s)
- Colette Brogniez
- Univ. Lille, CNRS, UMR 8518, LOA - Laboratoire d'Optique Atmosphérique, F-59000 Lille, France.
| | - Jean-François Doré
- INSERM U 1296 Radiations, Défense, Santé, Environnement, Centre Léon Bérard, F-69000 Lyon, France.
| | - Frédérique Auriol
- Univ. Lille, CNRS, UMR 8518, LOA - Laboratoire d'Optique Atmosphérique, F-59000 Lille, France.
| | - Pierre Cesarini
- Association Sécurité Solaire, Fondation A. de Rothschild, 25 rue Manin, F-75019 Paris, France.
| | - Fanny Minvielle
- Univ. Lille, CNRS, UMR 8518, LOA - Laboratoire d'Optique Atmosphérique, F-59000 Lille, France.
| | - Christine Deroo
- Univ. Lille, CNRS, UMR 8518, LOA - Laboratoire d'Optique Atmosphérique, F-59000 Lille, France.
| | - Maxime Catalfamo
- Univ. Lille, CNRS, UMR 8518, LOA - Laboratoire d'Optique Atmosphérique, F-59000 Lille, France.
| | - Jean-Marc Metzger
- UMS 3365 - OSU Réunion, Université de La Réunion, F-97744 St-Denis de La Réunion, France.
| | - Pierre Da Conceicao
- UMS 3470 - OSU Pytheas, Observatoire de Haute-Provence, F-04870 St-Michel-l'Observatoire, France.
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