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Elgarhy LH, Eltatawy RA, Rizk O, Ismail M. Vitamin D Receptor Expression in Chronic Plaque Psoriasis Before and After Narrowband Ultraviolet B Phototherapy. J Cutan Aesthet Surg 2023; 16:128-133. [PMID: 37554687 PMCID: PMC10405538 DOI: 10.4103/jcas.jcas_122_22] [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] [Indexed: 08/10/2023] Open
Abstract
Background/Purpose Psoriasis is a multifactorial disease. It is a combination of genetic, immunological, and environmental factors. Vitamin D receptor (VDR) is a nuclear receptor that regulates epidermal cell growth through the inhibition of proliferation and induction of keratinocytes terminal differentiation. Aim of the study was to investigate the effect of Narrow-band UVB (NB-UVB) therapy on VDR expression in the skin of psoriasis patients. Materials and Methods Forty patients with different severities of psoriasis were assessed using the psoriasis area and severity index (PASI) score. Lesional and non-lesional skin biopsies were obtained from each patient before NB-UVB therapy, and then a third lesional biopsy was performed after completing 24 sessions of NB-UVB. Immunohistochemistry for VDR was performed on all specimens. Results There was a significant decrease in VDR expression in psoriatic lesions compared to that in non-lesional skin before treatment. A statistically negative correlation was detected between the degree of VDR expression before treatment and PASI score, family history, and duration of psoriasis. There was a significant increase in VDR expression at the sites of psoriasis lesions post-NB-UVB therapy compared to pretreatment lesional skin. Conclusion VDR expression was down-regulated in psoriatic lesions compared to non-lesional skin, and NB-UVB therapy improved VDR expression in psoriasis skin lesions.
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Affiliation(s)
- Lamia H Elgarhy
- Department of Dermatology and Venereology, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Rania A Eltatawy
- Department of Dermatology and Venereology, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Omnia Rizk
- Department of Pathology, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Mayada Ismail
- Department of Dermatology and Venereology, Faculty of Medicine, Tanta University, Tanta, Egypt
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Lee SH, Joo NS. Effects of narrowband ultraviolet B exposure on serum 25-hydroxyvitamin D concentrations: A pilot study. Medicine (Baltimore) 2022; 101:e29937. [PMID: 35984188 PMCID: PMC9387955 DOI: 10.1097/md.0000000000029937] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
It is known that ultraviolet B exposure increases serum 25-hydroxyvitamin D(25(OH)D) concentrations. However, little is known about the influence of narrowband ultraviolet B exposure from a light-emitting diode (NBUVB-LED) on serum 25(OH)D levels. Thus, the purpose of this study was to investigate the effect of NBUVB-LED exposure on serum 25(OH)D concentrations. Two healthy adults were enrolled in this pilot study. Their skin was exposed to ultraviolet B light (60 mJ/cm2) 3 times a week for 4 weeks in the first intervention and every day for 4 weeks in the second intervention. Serum levels of 25(OH)D were measured every 2 weeks. Serum 25(OH)D levels were decreased in both subjects at the end of the first intervention (32.1 → 21.4 ng/mL, 33.9 → 21.4 ng/mL, respectively), whereas serum 25(OH)D levels were increased in the 2 weeks of the second intervention (29.5 and 28.0 ng/mL, respectively). At the end of the second intervention, the 25(OH)D concentrations were 19.0 and 20.4 ng/mL, respectively. NBUVB-LED exposure might increase serum 25(OH)D concentrations. Future studies should expand the number of participants and adjust for confounding factors.
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Affiliation(s)
- Seok-Hoon Lee
- Department of Family Practice and Community Health, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Nam-Seok Joo
- Department of Family Practice and Community Health, Ajou University School of Medicine, Suwon, Republic of Korea
- *Correspondence: Nam-Seok Joo, Department of Family Practice and Community Health, Ajou University School of Medicine, 164 Worldcup-ro, Youngtong-gu, Suwon, Gyeonggi-do, Republic of Korea (e-mail: )
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Brożyna AA, Slominski RM, Nedoszytko B, Zmijewski MA, Slominski AT. Vitamin D Signaling in Psoriasis: Pathogenesis and Therapy. Int J Mol Sci 2022; 23:ijms23158575. [PMID: 35955731 PMCID: PMC9369120 DOI: 10.3390/ijms23158575] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/15/2022] [Accepted: 07/26/2022] [Indexed: 12/13/2022] Open
Abstract
Psoriasis is a systemic, chronic, immune-mediated disease that affects approximately 2–3% of the world’s population. The etiology and pathophysiology of psoriasis are still unknown, but the activation of the adaptive immune system with the main role of T-cells is key in psoriasis pathogenesis. The modulation of the local neuroendocrine system with the downregulation of pro-inflammatory and the upregulation of anti-inflammatory messengers represent a promising adjuvant treatment in psoriasis therapies. Vitamin D receptors and vitamin D-mediated signaling pathways function in the skin and are essential in maintaining the skin homeostasis. The active forms of vitamin D act as powerful immunomodulators of clinical response in psoriatic patients and represent the effective and safe adjuvant treatments for psoriasis, even when high doses of vitamin D are administered. The phototherapy of psoriasis, especially UVB-based, changes the serum level of 25(OH)D, but the correlation of 25(OH)D changes and psoriasis improvement need more clinical trials, since contradictory data have been published. Vitamin D derivatives can improve the efficacy of psoriasis phototherapy without inducing adverse side effects. The anti-psoriatic treatment could include non-calcemic CYP11A1-derived vitamin D hydroxyderivatives that would act on the VDR or as inverse agonists on RORs or activate alternative nuclear receptors including AhR and LXRs. In conclusion, vitamin D signaling can play an important role in the natural history of psoriasis. Selective targeting of proper nuclear receptors could represent potential treatment options in psoriasis.
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Affiliation(s)
- Anna A. Brożyna
- Department of Human Biology, Institute of Biology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, 87-100 Toruń, Poland
- Correspondence: (A.A.B.); (A.T.S.)
| | - Radomir M. Slominski
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA;
- Informatics Institute, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Bogusław Nedoszytko
- Department of Dermatology, Allergology and Venerology, Medical University of Gdańsk, 80-211 Gdańsk, Poland;
- Cytogeneticr Laboratory, Invicta Fertility and Reproductive Centre, 80-850 Gdańsk, Poland
| | - Michal A. Zmijewski
- Department of Histology, Medical University of Gdańsk, 80-211 Gdańsk, Poland;
| | - Andrzej T. Slominski
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
- Laboratory Service, VA Medical Center at Birmingham, Birmingham, AL 35233, USA
- Correspondence: (A.A.B.); (A.T.S.)
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Wan Y, Lyu Y, Xu Y, Huang P. The relationship between VDR polymorphisms and keratinocyte carcinomas: a systematic review and meta-analysis. Future Oncol 2022; 18:2613-2626. [PMID: 35786964 DOI: 10.2217/fon-2021-1632] [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: 12/14/2022] Open
Abstract
Aim: To perform a meta-analysis to assess the association between common VDR polymorphisms (Fok1, Taq1, Apa1, Bsm1) and keratinocyte carcinomas (KCs) susceptibility. Methods & materials: databases were searched up to November 2021. Odds ratios (OR) with 95% CIs were evaluated in the association. Results: This meta-analysis included seven articles. KC (and its subtypes) risks are found to be associated with Fok1 (BCC: ff vs FF+Ff: OR = 2.13, 95% CI = 1.14-3.97; SCC: ff vs FF+Ff: OR = 1.54, 95% CI = 1.09-2.18) and Taq1 (BCC: Tt vs TT: OR = 1.99, 95% CI = 1.35-2.93; tt vs TT: OR = 2.09, 95% CI = 1.27-3.43; Tt +tt vs TT: OR = 2.02, 95% CI = 1.41-2.90) polymorphisms. Conclusion: This study suggests that the Fok1 f allele and the Taq1 t allele are associated with increased susceptibility to KC and its subtypes.
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Affiliation(s)
- Yiling Wan
- Department of Clinical Medicine, School of Queen Mary, Nanchang University, Nanchang, 330006, China
| | - Yanshuang Lyu
- Department of Clinical Medicine, School of Queen Mary, Nanchang University, Nanchang, 330006, China
| | - Yan Xu
- Department of Clinical Medicine, School of Queen Mary, Nanchang University, Nanchang, 330006, China
| | - Peng Huang
- Center for Evidence-Based Medicine, School of Public Health, Nanchang University, Nanchang, 330006, China.,Jiangxi Province Key Laboratory of Preventive Medicine, School of Public Health, Nanchang University, Nanchang, 330006, China
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Bae JM, Kim YS, Choo EH, Kim MY, Lee JY, Kim HO, Park YM. Both cardiovascular and cerebrovascular events are decreased following long-term narrowband ultraviolet B phototherapy in patients with vitiligo: a propensity score matching analysis. J Eur Acad Dermatol Venereol 2020; 35:222-229. [PMID: 32702138 DOI: 10.1111/jdv.16830] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 07/09/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND Systemic effects of long-term narrowband ultraviolet B (NB-UVB) phototherapy have not been well studied in vitiligo patients. An 11-year nationwide population-based retrospective cohort study was conducted using the Korean National Health Insurance claims database (2007-2017). OBJECTIVES To investigate the effects of long-term NB-UVB phototherapy on the risk of cardiovascular and cerebrovascular events in vitiligo patients. METHODS This study included vitiligo patients with ≥100 phototherapy sessions (phototherapy group, n = 3229) and <3 phototherapy sessions (no phototherapy group, n = 9687), in which covariables with age, sex, insurance type and comorbidities such as diabetes, hypertension and hyperlipidemia were matched by 1 : 3 propensity score matching. The outcomes of interest were cardiovascular (ischaemic heart disease and myocardial infarction) and cerebrovascular events (cerebrovascular infraction and haemorrhage). Cox proportional hazards models were used to assess the associations between NB-UVB phototherapy and each event. RESULTS The risk of cardiovascular or cerebrovascular events was significantly decreased in the phototherapy group compared with the no phototherapy group [hazard ratio (HR) 0.637, 95% confidence interval (CI) 0.523-0.776]. Subgroup analysis revealed that the risk of cardiovascular (HR: 0.682, 95% CI: 0.495-0.940) and cerebrovascular events (HR: 0.601, 95% CI: 0.470-0.769) were significantly lower in the phototherapy group than the no phototherapy group, respectively. CONCLUSIONS Our findings suggest that long-term NB-UVB phototherapy could decrease the risk of cardiovascular and cerebrovascular events in patients with vitiligo.
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Affiliation(s)
- J M Bae
- Department of Dermatology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Y-S Kim
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - E H Choo
- Division of Cardiology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - M-Y Kim
- CNP Skin Clinic, Seoul, Korea
| | - J Y Lee
- Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - H-O Kim
- Line Dermatology Clinic, Seoul, Korea
| | - Y M Park
- Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Kessler H, Marculescu R, Knobler R, Jantschitsch C. Effects of extracorporeal photopheresis on serum levels of vitamin D: Preliminary Data from a Pilot Study. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2018; 35:51-53. [PMID: 30260042 DOI: 10.1111/phpp.12428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 08/25/2018] [Accepted: 09/21/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Hannah Kessler
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Rodrig Marculescu
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Robert Knobler
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
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Abstract
Vitamin D plays a key role in skeletal and cardiovascular disorders, cancers, central nervous system diseases, reproductive diseases, infections, and autoimmune and dermatological disorders. The two main sources of vitamin D are sun exposure and oral intake, including vitamin D supplementation and dietary intake. Multiple factors are linked to vitamin D status, such as Fitzpatrick skin type, sex, body mass index, physical activity, alcohol intake, and vitamin D receptor polymorphisms. Patients with photosensitive disorders tend to avoid sun exposure, and this practice, along with photoprotection, can put this category of patients at risk for vitamin D deficiency. Maintaining a vitamin D serum concentration within normal levels is warranted in atopic dermatitis, psoriasis, vitiligo, polymorphous light eruption, mycosis fungoides, alopecia areata, systemic lupus erythematosus, and melanoma patients. The potential determinants of vitamin D status, as well as the benefits and risks of vitamin D (with a special focus on the skin), will be discussed in this article.
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Umar M, Sastry KS, Al Ali F, Al-Khulaifi M, Wang E, Chouchane AI. Vitamin D and the Pathophysiology of Inflammatory Skin Diseases. Skin Pharmacol Physiol 2018; 31:74-86. [DOI: 10.1159/000485132] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 11/07/2017] [Indexed: 12/13/2022]
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Evaluation of Serum Vitamin D Levels in Patients with Vitiligo Undergoing NBUVB (Narrowband UV-B) Therapy. Jundishapur J Nat Pharm Prod 2017. [DOI: 10.5812/jjnpp.65045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Weber B, Bachmann CC, Braun R, Abraham AG, Serra AL, Hofbauer GFL. 25-Hydroxyvitamin-D3 serum modulation after use of sunbeds compliant with European Union standards: A randomized open observational controlled trial. J Am Acad Dermatol 2017; 77:48-54. [PMID: 28416344 DOI: 10.1016/j.jaad.2017.02.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 02/06/2017] [Accepted: 02/08/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND Regular use of sunbed exposure has been reported to increase 25-hydroxyvitamin-D3 [25(OH)D] serum levels. However, the influence of sunbeds compliant with the recent European Union standard EN-60335-2-27 on 25(OH)D serum levels is unknown. OBJECTIVE We investigated the impact of standard sunbed use compliant with the European Union standard on 25(OH)D serum modulation and well-being. METHODS In a randomized controlled study, 25(OH)D serum levels were measured at enrollment, after 1 week, and after completion of the 12-week period of sunbed use with twice weekly exposure and compared with the control group without any sunbed exposure. RESULTS In the sunbed intervention group (N = 31), a 27% increase of mean 25(OH)D levels was noted 1 week after starting sunbed use (P < .01). However, after 12 weeks, mean 25(OH)D levels had declined and were no longer different from baseline (P = .06). After 12 weeks, 25(OH)D levels did not differ between the intervention and control group (P = .36). Also the 5-item World Health Organization Well-Being Index score did not differ between the sunbed and control groups (P = .19). LIMITATIONS For ethical reasons recruitment was limited to persons actively seeking sunbed exposure. CONCLUSIONS Standard use of sunbeds compliant with the European Union standard induced a transient increase of 25(OH)D levels, whereas no change in well-being was observed.
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Affiliation(s)
- Benedikt Weber
- Department of Dermatology, University Hospital Zurich, Zürich, Switzerland
| | - Chantal C Bachmann
- Department of Dermatology, University Hospital Zurich, Zürich, Switzerland
| | - Ralph Braun
- Department of Dermatology, University Hospital Zurich, Zürich, Switzerland
| | - Alison G Abraham
- School of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Andreas L Serra
- Department of Internal Medicine, Hirslanden Hospital, Zürich, Switzerland
| | - Günther F L Hofbauer
- Department of Dermatology, University Hospital Zurich, Zürich, Switzerland; Department of Internal Medicine, Hirslanden Hospital, Zürich, Switzerland.
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Serum vitamin D level - the effect on the clinical course of psoriasis. Postepy Dermatol Alergol 2016; 33:445-449. [PMID: 28035222 PMCID: PMC5183783 DOI: 10.5114/ada.2016.63883] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 10/26/2015] [Indexed: 01/06/2023] Open
Abstract
Introduction Psoriasis is a hyperproliferative disorder of the skin, and vitamin D analogs are widely used in its treatment. It is evident that ultraviolet radiation enables vitamin D3 (cholecalciferol) formation in the epidermis, and this product is further converted into the active metabolites 25-hydroxycholecalciferol and 1,25-hydroxycholecalciferol, which exert several important effects on the skin. The disruption in proper functioning of the skin which occurs in psoriasis leads to a loss of capacity for cutaneous synthesis of vitamin D3. In consequence, it activates a vicious circle that impairs homeostasis of the skin and results in a progressive decrease in the level of vitamin D in the whole human body. Aim To estimate the prevalence of vitamin D serum deficiency in patients with psoriasis and analyse the association of vitamin D food intake with clinical features. Material and methods Forty adults with psoriasis and 40 healthy subjects (control group) were recruited. Psoriasis plaques were diagnosed and evaluated by the PASI scale. Collected blood samples enabled measurement of serum vitamin D level by assessment with the immunoenzyme technique. Results The analysis with the Mann-Whitney U test revealed a statistically significant difference in 25-hydroxycholecalciferol level between healthy individuals and patients with psoriasis (p = 0.048). In both groups (control and psoriatic) the level of 25-hydroxycholecalciferol was seriously deficient (< 50 nmol/l). There was also a negative correlation of 25-hydroxycholecalciferol serum level with both PASI (r = –0.43) and the duration of psoriasis (r = –0.53). Conclusions It is necessary to bear in mind that not only the ingestion of food rich in vitamin D is necessary, but also the production of vitamin D with sun exposure. The quantity of 25-hydroxycholecalciferol is very important both in the general population and in patients with psoriasis, because these groups have a distinct metabolism.
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Maul JT, Kretschmer L, Anzengruber F, Pink A, Murer C, French L, Hofbauer G, Navarini A. Impact of UVA on pruritus during UVA/B phototherapy of inflammatory skin diseases: a randomized double-blind study. J Eur Acad Dermatol Venereol 2016; 31:1208-1213. [DOI: 10.1111/jdv.13994] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 09/20/2016] [Indexed: 11/27/2022]
Affiliation(s)
- J.-T. Maul
- Department of Dermatology; University Hospital of Zurich; Zurich Switzerland
| | - L. Kretschmer
- Department of Dermatology; University Hospital of Zurich; Zurich Switzerland
| | - F. Anzengruber
- Department of Dermatology; University Hospital of Zurich; Zurich Switzerland
| | - A. Pink
- St John's Institute of Dermatology; Guy's & St. Thomas’ NHS Foundation Trust; London UK
| | - C. Murer
- Department of Dermatology; University Hospital of Zurich; Zurich Switzerland
| | - L.E. French
- Department of Dermatology; University Hospital of Zurich; Zurich Switzerland
| | - G.F. Hofbauer
- Department of Dermatology; University Hospital of Zurich; Zurich Switzerland
| | - A.A. Navarini
- Department of Dermatology; University Hospital of Zurich; Zurich Switzerland
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Abstract
The skin is the site for the photosynthesis of vitamin D and is a target tissue for the active metabolite of vitamin D. An increasing body of evidence indicates that vitamin D produced during phototherapy may be responsible for the positive effects observed during treatment of some skin diseases. Topical or oral application of vitamin D derivatives are used alone or with phototherapy. This paper reviews what is known about the use of phototherapy to enhance vitamin D levels, the use of vitamin D analogues with phototherapy, the efficacy of combination therapies, and controversies regarding some of the outcomes. Vitamin D can play a beneficial role in treating psoriasis, even though the exact role of vitamin D in the pathogenesis and severity of psoriasis remains unclear. The role of vitamin D in vitiligo, atopic dermatitis, polymorphic light eruption, and mycosis fungoides must be further investigated.
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Affiliation(s)
- Asta Juzeniene
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Montebello, N-0310 Oslo, Norway.
| | - Mantas Grigalavicius
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Montebello, N-0310 Oslo, Norway
| | - Marina Juraleviciute
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Montebello, N-0310 Oslo, Norway
| | - William B Grant
- Sunlight, Nutrition, and Health Research Center, San Francisco, CA
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Influence of dermal exposure to ultraviolet radiation and coal tar (polycyclic aromatic hydrocarbons) on the skin aging process. J Dermatol Sci 2016; 81:192-202. [DOI: 10.1016/j.jdermsci.2015.12.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 12/17/2015] [Accepted: 12/22/2015] [Indexed: 12/14/2022]
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Risk of fractures in vitiligo patients treated with phototherapy-A retrospective population-based cohort study. J Dermatol Sci 2016; 82:197-203. [PMID: 26988075 DOI: 10.1016/j.jdermsci.2016.02.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 02/12/2016] [Accepted: 02/26/2016] [Indexed: 12/18/2022]
Abstract
BACKGROUND Phototherapy might increase bone mineral density. However, it is unknown whether phototherapy can reduce the risk of fractures in patients with vitiligo. OBJECTIVES To investigate the effect of phototherapy on fracture risks in vitiligo patients aged 40 or older. METHODS This population-based cohort study used the 2000-2010 Taiwan National Health Insurance Research Database (NHIRD) to identify 3863 patients newly diagnosed with vitiligo between 2003 and 2009 at age ≥40 years. Study subjects were classified into three cohorts: (1) frequent phototherapy; (2) infrequent phototherapy; and (3) no phototherapy. Patients were followed until the first hip or vertebral fracture or 31 December 2010. Data were analysed using Cox regression models and also stratified by age and gender. RESULTS Frequent phototherapy decreased the fracture risks (adjusted hazard ratio (aHR)=0.32, p=0.009) in vitiligo patients. Stratification by age and gender confirmed the fracture prevention effect of frequent phototherapy in patients aged 40-64 years (aHR=0.14, p=0.016) and in female patients (aHR=0.31, p=0.024). CONCLUSIONS This study provides the first evidence that frequent phototherapy can reduce the risk of fractures among middle-aged and among female vitiligo patients.
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Le P, Tu J, Gebauer K, Brown S. Serum 25-hydroxyvitamin D increases with NB-UVB and UVA/UVB phototherapy in patients with psoriasis and atopic dermatitis in Western Australia. Australas J Dermatol 2015; 57:115-21. [DOI: 10.1111/ajd.12315] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 01/16/2015] [Indexed: 12/20/2022]
Affiliation(s)
- Patricia Le
- Department of Dermatology; Fremantle Hospital; Fremantle
| | - Jenny Tu
- Department of Dermatology; Fremantle Hospital; Fremantle
| | - Kurt Gebauer
- Department of Dermatology; Fremantle Hospital; Fremantle
| | - Suzanne Brown
- Department of Endocrinology & Diabetes; Sir Charles Gairdner Hospital; Nedlands Western Australia Australia
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Maafi M, Maafi W. Quantitative assessment of photostability and photostabilisation of Fluvoxamine and its design for actinometry. Photochem Photobiol Sci 2015; 14:982-94. [DOI: 10.1039/c5pp00022j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Wavelength-dependent forward and reverse Fluvo quantum yields have been reported.
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Affiliation(s)
- Mounir Maafi
- Leicester School of Pharmacy
- De Montfort University
- Leicester LE1 9BH
- UK
| | - Wassila Maafi
- Leicester School of Pharmacy
- De Montfort University
- Leicester LE1 9BH
- UK
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Klebes M, Lademann J, Philipp S, Ulrich C, Patzelt A, Ulmer M, Kluschke F, Kramer A, Weltmann K, Sterry W, Lange-Asschenfeldt B. Effects of tissue-tolerable plasma on psoriasis vulgaris treatment compared to conventional local treatment: A pilot study. CLINICAL PLASMA MEDICINE 2014. [DOI: 10.1016/j.cpme.2013.11.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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