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Kang MS, Kim JH, Nam SM, Park ES. A split-face study evaluating the efficacy of a topical antioxidant cream containing tocotrienol after 1064-nm picosecond Nd:YAG laser treatment for environment-induced skin pigmentation. ARCHIVES OF AESTHETIC PLASTIC SURGERY 2021. [DOI: 10.14730/aaps.2021.00143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background This study aimed to evaluate the efficacy and safety of a topical antioxidant cream containing tocotrienol after 1064-nm picosecond neodymium-doped yttrium aluminum garnet (Nd:YAG) laser treatment for environment-induced skin pigmentation.Methods A split-face study was conducted between December 2020 and March 2021 in 26 patients (25 women and one man) who were treated with a 1064-nm picosecond Nd:YAG laser. On the right side of the face, an antioxidant cream containing tocotrienol was applied after picosecond laser treatment, and on the left side, only picosecond laser treatment was performed. We compared the right and left sides of the face at 4 weeks after laser treatment using an automatic skin analysis device to investigate skin pigmentation. The melasma severity scores of the two sides were evaluated before and 4 weeks after picosecond laser treatment.Results The skin pigmentation score showed a significant difference between pretreatment and 4 weeks after picosecond laser treatment on both sides of the face (P<0.001), and there was a significant difference in skin pigmentation score improvement between the right and left sides (P<0.001). The melasma severity score showed a significant difference on the right side between pretreatment and 4 weeks after laser treatment (P<0.001), but there was no significant change on the left side (P>0.05).Conclusions Our results show that, for the treatment of environment-induced skin pigmentation, the application of a tocotrienol-containing antioxidant cream after 1064-nm picosecond laser treatment can provide good results without any complications.
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Wright CY, Norval M. Health Risks Associated With Excessive Exposure to Solar Ultraviolet Radiation Among Outdoor Workers in South Africa: An Overview. Front Public Health 2021; 9:678680. [PMID: 33996735 PMCID: PMC8113384 DOI: 10.3389/fpubh.2021.678680] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 03/31/2021] [Indexed: 11/13/2022] Open
Abstract
Exposure of outdoor workers to high levels of solar ultraviolet radiation (UVR) poses significant, well-known health risks including skin cancer and eye diseases. In South Africa, little is known about how many workers are potentially overexposed to solar UVR and what the associated impacts on their health might be. In this overview, the geography and solar UVR environment in South Africa are considered, as well as the different outdoor occupational groups likely to be affected by excessive solar UVR exposure. Sunburn, pterygium, cataract, keratinocyte cancers, and melanoma are discussed in the context of outdoor workers. Few studies in South Africa have considered these health issues and the most effective ways to reduce solar UVR exposure for those working outside. Several countries have developed policies and guidelines to support sun safety in the workplace which include training and education, in addition to the provision of personal protective equipment and managerial support. Several gaps in occupational sun protection and workplace sun safety for South Africa are identified. Legislation needs to recognize solar UVR exposure as an occupational health hazard, with sun safety guidelines and training provided for employers and employees.
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Affiliation(s)
- Caradee Y Wright
- Environment and Health Research Unit, South African Medical Research Council, Pretoria, South Africa.,Department of Geography, Geoinformatics and Meteorology, University of Pretoria, Pretoria, South Africa
| | - Mary Norval
- Biomedical Sciences, University of Edinburgh Medical School, Edinburgh, United Kingdom
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Fan F, Li Y, Liu Y, Shao L, Yu J, Li Z. Overexpression of klotho in adipose-derived stem cells protects against UVB-induced photoaging in co-cultured human fibroblasts. Mol Med Rep 2018; 18:5473-5480. [PMID: 30365106 PMCID: PMC6236291 DOI: 10.3892/mmr.2018.9594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 10/05/2018] [Indexed: 01/08/2023] Open
Abstract
Co-culture methods are widely used in tissue engineering to drive tissue formation with the direct or indirect interaction of multiple cell types. Klotho is a novel biomarker involved in aging. In this study, we evaluated the protective effects of klotho overexpressed adipose-derived stem cells (ADSCs) against ultraviolet radiation B (UVB)-induced photoaging in co-cultured human skin fibroblasts (HSF2 cell line). Furthermore, the involvement of P38 mitogen-activated protein kinase (MAPK) signaling was investigated. ADSCs were isolated from human subcutaneous adipose tissue and the 3rd generation of ADSCs was used after being identified. Klotho overexpression (OE) lentivirus vectors were constructed and identified in ADSCs. The HSF2 cells were seeded in the upper layer of the Transwell co-culture plate (0.4 µm pore polycarbonate membrane) and ADSCs were seeded in the lower layer. UVB irradiation of HSF2 cells was performed using UVB lamps in uncovered petri dishes at room temperature. The present results indicated that the proliferation of ADSCs was increased by klotho OE. Furthermore the proliferation and collagen content of HSF2 were decreased by UVB irradiation in a dose-dependent manner. By contrast, the protein level of matrix metalloproteinases (MMP) 1, 3 and p-P38 in HSF2 were upregulated. In the co-culture system, relative mRNA expression of MMP-1 and MMP-3 as well as protein level of MMP-1, MMP-3 and p-P38 in HSF2 were reduced by co-culture with klotho overexpressed ADSCs when exposed to UVB (20 mJ/cm2). By contrast, the collagen content of HSF2 was increased. Collectively, OE of klotho in ADSCs notably ameliorates UVB-induced photoaging in co-cultured HSF2, and these effects were potentially achieved by increasing the collagen content and decreasing the protein level of MMP-1, MMP-3 and p-P38.
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Affiliation(s)
- Furong Fan
- Department of Plastic and Reconstructive Surgery, The No. 455 Hospital of PLA, Shanghai 200052, P.R. China
| | - Yufei Li
- Department of Plastic and Reconstructive Surgery, The No. 455 Hospital of PLA, Shanghai 200052, P.R. China
| | - Yi Liu
- Burns and Plastic Surgery Center of CPLA, Lanzhou General Hospital of CPLA, Lanzhou, Gansu 730050, P.R. China
| | - Li Shao
- The VIP Department, East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
| | - Juehua Yu
- Cancer Research Institute, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 320000, P.R. China
| | - Ziwei Li
- The VIP Department, East Hospital, Tongji University School of Medicine, Shanghai 200120, P.R. China
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Lee JH, Park SR, Jo JH, Park SY, Seo YK, Kim SM. Comparison of epidermal/dermal damage between the long-pulsed 1064 nm Nd:YAG and 755 nm alexandrite lasers under relatively high fluence conditions: quantitative and histological assessments. Photomed Laser Surg 2016; 32:386-93. [PMID: 24992273 DOI: 10.1089/pho.2013.3665] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE The purpose of this study was to compare degrees of epidermal/dermal tissue damage quantitatively and histologically after laser irradiation, to find ideal treatment conditions with relatively high fluence for skin rejuvenation. BACKGROUND DATA A number of recent studies have evaluated the clinical efficacy and safety of therapeutic lasers under relatively low fluence conditions. METHODS We transmitted the long-pulsed 1064 nm Nd:YAG and 755 nm Alexandrite lasers into pig skin according to different fluences and spot diameters, and estimated epidermal/dermal temperatures. Pig skin specimens were stained with hematoxylin and eosin for histological assessments. The fluence conditions comprised 26, 30, and 36 J/cm2, and the spot diameter conditions were 5, 8, and 10 mm. Pulse duration was 30 ms for all experiments. RESULTS Both lasers produced reliable thermal damage on the dermis without any serious epidermal injuries, under relatively high fluence conditions. The 1064 nm laser provided more active fibrous formations than the 755 nm laser, while higher risks for tissue damages simultaneously occurred. CONCLUSIONS The ideal treatment conditions for skin rejuvenation were 8 mm diameter with 30 J/cm2 and 10 mm diameter with 26 J/cm2 for the 1064 nm laser, and 8 mm diameter with 36 J/cm2 and 10 mm diameter with 26 J/cm2 for the 755 nm laser.
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Affiliation(s)
- Ju Hwan Lee
- Department of Medical Bio Technology, Dongguk University-Seoul Seoul , Republic of Korea
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Lucas RM, Norval M, Wright CY. Solar ultraviolet radiation in Africa: a systematic review and critical evaluation of the health risks and use of photoprotection. Photochem Photobiol Sci 2016; 15:10-23. [DOI: 10.1039/c5pp00419e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The majority of the African continent experiences high solar UVB radiation throughout the year. The adverse consequences of this on the health of populations living in Africa are reviewed.
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Affiliation(s)
- Robyn M. Lucas
- National Centre for Epidemiology and Population Health
- The Australia National University
- Canberra
- Australia
| | - Mary Norval
- Biomedical Sciences
- University of Edinburgh
- Edinburgh
- UK
| | - Caradee Y. Wright
- South African Medical Research Council and University of Pretoria
- Pretoria
- South Africa
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Moon HR, Yun WJ, Lee YJ, Lee MW, Chang S. A prospective, randomized, double-blind comparison of an ablative fractional 2940-nm erbium-doped yttrium aluminum garnet laser with a nonablative fractional 1550-nm erbium-doped glass laser for the treatment of photoaged Asian skin. J DERMATOL TREAT 2015; 26:551-7. [DOI: 10.3109/09546634.2014.999020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Wright CY, Norval M, Hertle RW. Oculocutaneous albinism in sub-Saharan Africa: adverse sun-associated health effects and photoprotection. Photochem Photobiol 2014; 91:27-32. [PMID: 25298350 DOI: 10.1111/php.12359] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 10/01/2014] [Indexed: 01/15/2023]
Abstract
Oculocutaneous albinism (OCA) is a genetically inherited autosomal recessive condition. Individuals with OCA lack melanin and therefore are susceptible to the harmful effects of solar ultraviolet radiation, including extreme sun sensitivity, photophobia and skin cancer. OCA is a grave public health issue in sub-Saharan Africa with a prevalence as high as 1 in 1000 in some tribes. This article considers the characteristics and prevalence of OCA in sub-Saharan African countries. Sun-induced adverse health effects in the skin and eyes of OCA individuals are reviewed. Sun exposure behavior and the use of photoprotection for the skin and eyes are discussed to highlight the major challenges experienced by these at-risk individuals and how these might be best resolved.
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Affiliation(s)
- Caradee Y Wright
- Climate Studies, Modelling and Environmental Health Research Group, Council for Scientific and Industrial Research, Pretoria, South Africa; Department of Geography, Geoinformatics and Meteorology, University of Pretoria, Pretoria, South Africa
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Chandrashekar BS, Sriram R, Mysore R, Bhaskar S, Shetty A. Evaluation of microneedling fractional radiofrequency device for treatment of acne scars. J Cutan Aesthet Surg 2014; 7:93-7. [PMID: 25136209 PMCID: PMC4134659 DOI: 10.4103/0974-2077.138328] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background: Various treatment modalities including non-invasive methods such as chemical peels, topical retinoids, microdermabrasion, minimally invasive techniques such as microneedling, fractional lasers, microneedling radiofrequency devices and invasive procedures such as acne scar surgeries and ablative lasers are used for acne scars, each with its own unique advantages and disadvantages. This study is a retrospective assessment of efficacy and safety of microneedling fractional radiofrequency in the treatment of acne scars. Methods: Thirty one patients of skin types III-V with moderate and severe facial acne scarring received four sequential fractional radiofrequency treatments over a period of 6 months with an interval of 6 weeks between each session. Goodman & Baron's acne scar grading system was used for assessment by a side by side comparison of preoperative and post- operative photographs taken at their first visit and at the end of 3 months after the last session. Results: Estimation of improvement with Goodman and Baron's Global Acne Scarring System showed that by qualitative assessment of 31 patients with grade 3 and grade 4 acne scars, 80.64% showed improvement by 2 grades and 19.35% showed improvement by 1 grade. Quantitative assessment showed that 58% of the patients had moderate, 29% had minimal, 9% had good and 3% showed very good improvement. Adverse effects were limited to transient pain, erythema, edema and hyperpigmentation. Conclusion: Microneedling fractional radiofrequency is efficacious for the treatment of moderate and severe acne scars.
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Affiliation(s)
| | - Rashmi Sriram
- Department of Dermatology, CUTIS Academy of Cutaneous Sciences, Bengaluru, Karnataka, India
| | - Rajdeep Mysore
- Department of Dermatology, CUTIS Academy of Cutaneous Sciences, Bengaluru, Karnataka, India
| | - Sapnashree Bhaskar
- Department of Dermatology, CUTIS Academy of Cutaneous Sciences, Bengaluru, Karnataka, India
| | - Abhishek Shetty
- Department of Dermatology, CUTIS Academy of Cutaneous Sciences, Bengaluru, Karnataka, India
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Eimpunth S, Wanitphadeedecha R, Manuskiatti W. A focused review on acne-induced and aesthetic procedure-related postinflammatory hyperpigmentation in Asians. J Eur Acad Dermatol Venereol 2012. [DOI: 10.1111/jdv.12050] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Abstract
The growing diversification of the patient population coupled with the increasing demand for cosmetic laser rejuvenation has highlighted the need to develop cutaneous laser systems and establish treatment protocols for patients with a wide range of skin conditions and phototypes. Recent technologic advancements have provided viable treatment options to achieve clinical outcomes that were previously only attainable in patients with lighter skin tones. This review provides an updated discussion of the range of laser treatments available for pigmented skin and sets the stage for further advancements. Pigment-specific laser technology with green, red, or near-infrared light targets a variety of pigmented lesions such as lentigines, ephelides, café-au-lait macules, and melanocytic nevi as well as tattoos and unwanted hair. Short-pulsed alexandrite, ruby, and neodymium:yttrium-aluminum-garnet (Nd:YAG) lasers are used for pigmented lesions and tattoos, whereas their longer pulse-width laser counterparts are used for laser-assisted hair removal. Vascular lesions and hypertrophic scars can be treated with a variety of vascular-specific lasers, but it is the pulsed dye laser (PDL) that has long been the gold standard treatment for these lesions due to its high specificity for hemoglobin and its ability to improve skin surface texture in children and adults. Laser skin resurfacing techniques for photodamaged skin and atrophic scars have been optimized with fractional technology to produce excellent clinical outcomes and minimal complication risks. Radiofrequency and nonablative lasers are also used to provide skin tightening and collagen remodeling with virtually no postoperative recovery.
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Affiliation(s)
- Sona Shah
- Washington Institute of Dermatologic Laser Surgery, Washington, DC 20005, USA
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Manuskiatti W, Siriphukpong S, Varothai S, Wanitphakdeedecha R, Fitzpatrick RE. Effect of pulse width of a variable square pulse (VSP) erbium:YAG laser on the treatment outcome of periorbital wrinkles in Asians. Int J Dermatol 2010; 49:200-6. [DOI: 10.1111/j.1365-4632.2009.04292.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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