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Nasirzadeh N, Monazam Esmaeelpour M, Naseri N, Omari Shekaftik S. Improving ultraviolet protection properties of cotton textiles using Zinc oxide (ZnO) nanomaterials: an approach for controlling occupational and environmental exposures. Int J Environ Health Res 2024; 34:2067-2087. [PMID: 37173286 DOI: 10.1080/09603123.2023.2211529] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023]
Abstract
Ultraviolet (UV) radiation exposure is one of the most important risk factor among workers. it may stimulate health outcomes such as multiple skin injuries and blinding eye diseases. So, UV protection is mainly important for people who expose to it. Modification of cotton textiles by nanomaterials is a new approach to overcome this problem. So, the aim of this study is to review studies conducted on using ZnO nanoparticles for improving ultraviolet protection of cotton textiles. The search strategy was provided by cochrane guideline. 45 studies were regarded as appropriate. The results show that UPF for textiles has improved by coated ZnO. However, UPF was depended on the physicochemical characteristics of ZnO and textiles such as yarn structure, effect of woven fabric construction, fabric porosity, and impurity of textiles and laundering conditions. Also, plasma technology has improved UPF, it is recommended that more studies be done to achieve better results.
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Affiliation(s)
- Nafiseh Nasirzadeh
- Occupational Health Engineering, School of Public Health, Department of Occupational Health Engineering, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Monazam Esmaeelpour
- Occupational Health Engineering, School of Public Health, Department of Occupational Health Engineering, Tehran University of Medical Sciences, Tehran, Iran
| | - Neda Naseri
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Soqrat Omari Shekaftik
- Occupational Health Engineering, School of Public Health, Department of Occupational Health Engineering, Tehran University of Medical Sciences, Tehran, Iran
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2
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Dai J, Suo L, Xian H, Pan Z, Zhang C. Investigating the Impact of Sun/UV Protection and Ease of Skin Tanning on the Risk of Pseudoexfoliation Glaucoma: A Mendelian Randomization Study. Invest Ophthalmol Vis Sci 2023; 64:4. [PMID: 37788000 PMCID: PMC10552876 DOI: 10.1167/iovs.64.13.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 09/11/2023] [Indexed: 10/04/2023] Open
Abstract
Purpose To investigate the potential causal associations between the use of sun/ultraviolet (UV) protection and ease of skin tanning and the risk of pseudoexfoliation glaucoma (PXG) in European populations. Methods Single nucleotide polymorphisms (SNPs) associated with the use of sun/UV protection and ease of skin tanning were selected from the UK Biobank genome-wide association study database consisting of 498,751 European participants. SNPs of PXG were obtained from the FinnGen study including 3424 PXG cases and 326,434 controls. Two-sample Mendelian randomization (MR) analyses were performed to assess the association between the use of sun/UV protection and ease of skin tanning and risk of PXG. Results Inverse variance weighted regression of genetic susceptibility predicted that both use of sun/UV protection and ease of skin tanning were potentially positively associated with the decreased risk of PXG in the European ancestry (use of sun/UV protection: odds ratio [OR] = 0.47; 95% confidence interval [CI], 0.24-0.92; P = 0.028; ease of skin tanning: OR = 0.81; 95% CI, 0.67-0.97; P = 0.025). Conclusions We found genetic evidence supporting a potential causal association between UV protection and a decreased risk of PXG in European population. Further research will help elucidate the underlying mechanisms and promote UV protection for eyes, especially in people with a high risk of PXG.
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Affiliation(s)
- Jinyue Dai
- Department of Ophthalmology, Peking University Third Hospital, Beijing, China
| | - Lingge Suo
- Department of Ophthalmology, Peking University Third Hospital, Beijing, China
| | - Haocheng Xian
- Department of Ophthalmology, Peking University Third Hospital, Beijing, China
| | - Zhe Pan
- Department of Ophthalmology, Peking University Third Hospital, Beijing, China
| | - Chun Zhang
- Department of Ophthalmology, Peking University Third Hospital, Beijing, China
- Department of Ophthalmology, Peking University Eye Center, Beijing, China
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Abd El-Aziz E, Zayed M, Mohamed AL, Hassabo AG. Enhancement of the Functional Performance of Cotton and Polyester Fabrics upon Treatment with Polymeric Materials Having Different Functional Groups in the Presence of Different Metal Nanoparticles. Polymers (Basel) 2023; 15:3047. [PMID: 37514435 PMCID: PMC10385963 DOI: 10.3390/polym15143047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 06/26/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
This work examined the functional properties of three different treated fabrics, cotton, polyester, and cotton/polyester, with different polymeric materials (polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), or chitosan) in the presence and absence of two synthesized metal nanoparticles to impart and enhance fabric properties. Both metal nanoparticles (silver nanoparticle (AgNPs) and Zinc oxide nanoparticles (ZnONPs)) were synthesized using Psidium guajava Leaves and characterized using different techniques. The different treated fabrics were dyed with Reactive Dye (Syozol red k-3BS) and evaluated for their color strength, fastness properties, ultraviolet protection, antimicrobial activity, and mechanical properties. Results showed that treatment with polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), or chitosan enhances the functionality of all fabrics, with improved color strength, UV protection, and antimicrobial properties. Additionally, mechanical properties were slightly increased due to the creation of a thin film on the fabric surface. All dyed treated fabrics showed good ultraviolet protection and antimicrobial properties. The K/S of all treated textiles including nanoparticles and polymers was marginally greater than that of the treated materials without polymers. The UPF values demonstrate that the three investigated polymers and both metal nanoparticles enhance the fabrics' ability to block UV radiation and shield people's skin from its damaging effects. All treated textiles had UPF values that are higher than those of untreated textiles. Further research demonstrates that ZnONP-treated textiles exhibited greater UPF values than AgNP-treated textiles when the polymer component was present. Antibacterial examination demonstrated that treated materials had robust microbial resistance. This resistance is diminished by washing, but still prevents bacterial growth more effectively than untreated textiles.
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Affiliation(s)
- Eman Abd El-Aziz
- Textile Printing, Dyeing and Finishing Department, Faculty of Applied Arts, Benha University, Benha P.O. Box 15123, Egypt
| | - Menna Zayed
- Textile Printing, Dyeing and Finishing Department, Faculty of Applied Arts, Benha University, Benha P.O. Box 15123, Egypt
| | - Amina L Mohamed
- National Research Centre (Scopus Affiliation ID 60014618), Textile Research and Technology Institute, Pretreatment, and Finishing of Cellulose-Based Fibres Department, 33 El-Behouth St. (Former El-Tahrir Str.), Dokki, Giza P.O. Box 12622, Egypt
| | - Ahmed G Hassabo
- National Research Centre (Scopus Affiliation ID 60014618), Textile Research and Technology Institute, Pretreatment, and Finishing of Cellulose-Based Fibres Department, 33 El-Behouth St. (Former El-Tahrir Str.), Dokki, Giza P.O. Box 12622, Egypt
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Sk MS, Akram W, Mia R, Fang J, Kabir SMM. Fabrication of UV-Protective Polyester Fabric with Polysorbate 20 Incorporating Fluorescent Color. Polymers (Basel) 2022; 14:polym14204366. [PMID: 36297944 PMCID: PMC9610945 DOI: 10.3390/polym14204366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/11/2022] [Accepted: 10/14/2022] [Indexed: 11/09/2022] Open
Abstract
Technological advancement leads researchers to develop multifunctional materials. Considering such trends, this study aimed to conjugate dual functionality in a single material to satisfy aesthetic and functional necessities. We investigated the potentiality of polysorbate 20 to perform as an effective ultraviolet absorber to develop UV-protective fabric. Coumarin derivative (Benzoxazolyl type) disperse dyes are well-known as fluorescent colors. On the other hand, luminescence materials are conspicuous and viable for fashion trends. Deliberate utilization of this inherent property of the dye and incorporation of polysorbate fulfilled the need for dual functionality. In addition, the knitted fabric structure enhanced wearing comfort as well. The effect of polysorbate consolidated the PET fabric as an excellent UV absorber, exhibiting an ultraviolet protection factor (UPF) of 53.71 and a blocking percentage of more than 95% for both UVA and UVB. Surface morphology was studied by scanning electron microscope (SEM). Fourier transform infrared spectroscopy (FTIR) with attenuated mode was used to investigate chemical modification. Moreover, X-ray diffraction (XRD) investigated the crystallography of the surface. Reflectance spectrophotometric analysis unveiled the color strength (K/S) of the dyed polyester fabrics. Finally, light fastness assessment revealed that the developed samples could resist a certain amount of photo fading under a controlled testing environment with the increment of ratings towards betterment.
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Affiliation(s)
- Md. Salauddin Sk
- Department of Wet Process Engineering, Bangladesh University of Textiles, Tejgaon, Dhaka 1208, Bangladesh
| | - Wasim Akram
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Rony Mia
- School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, China
- Correspondence: (R.M.); (J.F.)
| | - Jian Fang
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
- Correspondence: (R.M.); (J.F.)
| | - Shekh Md. Mamun Kabir
- Department of Wet Process Engineering, Bangladesh University of Textiles, Tejgaon, Dhaka 1208, Bangladesh
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Ribas JR, Rodríguez SG, Fariña EA, Suárez-García A. An Assessment on the Efficiency of Clothing with UV Protection among the Spanish Navy School Students. Materials (Basel) 2022; 15:6227. [PMID: 36143539 PMCID: PMC9500963 DOI: 10.3390/ma15186227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 08/31/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Abstract
Concern about the harmful effects that ultraviolet (UV) rays have on the skin of people who are routinely exposed to solar radiation has driven the industry of skin protection creams, sunglasses and clothing. Spanish Navy personnel are subject to different levels of exposure depending on their rank and function. The objective of this research is to analyze the behavioral variables associated to the effects on the skin caused by UV rays, denoted by the combined effects of perceived susceptibility and perceived severity, on their decision to purchase and wear uniforms with UV protection. A confirmatory analysis using a structural equation modeling (SEM) was performed on a sample of 100 respondents. The model results revealed a strong mediating characteristic of the intention to use, variable associated with the exogenous variables. Attitude towards the use of clothing and social influence, as well as the exogenous variable clothing action planning, on the sun protective clothing use during tactical maneuvers. These relationships were significant with p-values close to zero. However, exogenous variables related to perceived susceptibility and perceived severity in exposure to sunlight did not represent a significant influence when mediated by self-efficacy in use. The results revealed the consequence of awareness about the importance of protecting oneself and the influence that usage habits can have on the military with respect to the decision to purchase uniforms with UV protection.
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Affiliation(s)
- José Roberto Ribas
- Escola Politécnica, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Sol García Rodríguez
- Research Group Solar and Wind Feasibility Technologies (SWIFT), Electromechanical Engineering Department, University of Burgos, 09006 Burgos, Spain
| | - Elena Arce Fariña
- Department of Industrial Engineering, Ferrol Polytechnic University School, University of A Coruña, 15403 A Coruña, Spain
| | - Andrés Suárez-García
- Defense University Center, Naval Academy, University of Vigo, Plaza de España 2, 36920 Marín, Spain
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Zhou Y, Lin Y, Tawiah B, Sun J, Yuen RKK, Fei B. DOPO-Decorated Two-Dimensional MXene Nanosheets for Flame-Retardant, Ultraviolet-Protective, and Reinforced Polylactide Composites. ACS Appl Mater Interfaces 2021; 13:21876-21887. [PMID: 33939405 DOI: 10.1021/acsami.1c05587] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This study presents a novel and facile strategy for fabricating fire-resistant, ultraviolet (UV)-shielding, and tensile-enhanced polylactide (PLA) composites using two-dimensional (2D) MXene (Ti3C2) flakes chemically modified with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). The thermal and burning performances of PLA composites were demonstrated by the limiting oxygen index, UL-94 test, and cone calorimetry. The UV-shielding and tensile performances were also examined. The results revealed that PLA/Ti3C2-DOPO (3 wt %) displayed a V-0 rating in the UL-94 test. The enhancement against fire hazard was reflected by the significant reduction in the peak heat release rate (33.7%), total heat release (47%), peak CO production (58.8%), and total smoke production (41.7%). The improved fire-safety performance of the composites is attributed to the interplay of catalytic, barrier, and condensed effects of the Ti3C2-DOPO nanosheets in the PLA matrix. PLA/Ti3C2-DOPO also showed an increase (∼9%) in tensile strength and an "Excellent" level (UPF 50+) in the UV-protection assessment. In all, this study introduces a novel chemical modification strategy for 2D MXene flakes to fabricate multifunctional PLA composites, which are promising candidates for next-generation sustainable and protective plastic products.
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Affiliation(s)
- Yuyang Zhou
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong 999077, China
- Centre of Micro/Nano Manufacturing Technology (MNMT-Dublin), School of Mechanical & Materials Engineering, University College Dublin, Dublin D04 KW52, Ireland
| | - Yichao Lin
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong 999077, China
- School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Benjamin Tawiah
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong 999077, China
- Department of Industrial Art (Textiles), Kwame Nkrumah University of Science and Technology, Kumasi 00000, Ghana
| | - Jun Sun
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Richard K K Yuen
- Department of Civil and Architectural Engineering, City University of Hong Kong, Hong Kong 999077, China
| | - Bin Fei
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong 999077, China
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Sonnahalli NK, Chowdhary R. Effect of nanoparticles on color stability and mechanical and biological properties of maxillofacial silicone elastomer: A systematic review. J Indian Prosthodont Soc 2020; 20:244-254. [PMID: 33223694 PMCID: PMC7654200 DOI: 10.4103/jips.jips_429_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 02/26/2020] [Accepted: 03/27/2020] [Indexed: 01/24/2023] Open
Abstract
Aim: The aim of this systematic review was to evaluate the effect of addition of various nanoparticles into maxillofacial silicone elastomer on color stability and mechanical and biological properties of the silicone elastomer. Settings and Design: This systematic review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines(PRISMA). Materials and Methods: The electronic database search in MEDLINE/PubMed was based on population (silicone elastomer), intervention (nanoparticles), comparison (unreinforced silicone elastomer with nanoparticle-reinforced silicone elastomer), outcome (color stability and mechanical, physical, and biological properties), i.e., PICO framework. The key words used are (”maxillofacial silicone” OR “silicone elastomer” OR “facial silicone”) AND (”nanoparticles” OR “Nano-oxides”) AND (”colour stability” OR “Hardness,” “tensile strength” OR “tear strength” OR “antifungal activity”). Results: The database search resulted in 2099 studies, of which 2066 articles were excluded as they were irrelevant, duplicates, and data were not available. The remaining 33 full-text articles were assessed for eligibility, out of which 2 articles were in Chinese language, 3 articles were thesis documents, and 8 were review articles. A total of 12 articles were excluded and the remaining 20 articles were included. One article was yielded by hand search of references of included studies. A total of 21 studies were included in the present systematic review. Conclusion: With the available evidence in the literature, it can be concluded that addition of nanoparticles at various concentrations may improve the physical and mechanical properties and color stability of the prosthesis made from the silicone elastomers.
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Affiliation(s)
| | - Ramesh Chowdhary
- Department of Prosthodontics, Raja Rajeswari Dental College and Hospital, Bengaluru, Karnataka, India
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8
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Abstract
This work reports a facile fabrication method for constructing multifunctional moth-eye TiO2/polydimethylsiloxane (PDMS) pads using soft nano-imprinting lithography and a gas-phase-deposited thin sacrificial layer. Mesoporous TiO2 nanoparticles act as an effective UV filter, completely blocking high-energy UVB light and partially blocking UVA light and forming a robust TiO2/PDMS composite pad by allowing the PDMS solution to easily fill the porous TiO2 network. The paraboloid-shaped moth-eye nanostructures provided high transparency in the visible spectrum and also have self-cleaning effects because of nanoroughness on the surface. Furthermore, we successfully achieved a desired multiscale-patterned surface by partially curing select regions using TiO2/PDMS pads with partial UVA ray blockers. The ability to fabricate multifunctional polymeric pads is advantageous for satisfying increasing demands for flexible and wearable electronics, displays, and solar cells.
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Affiliation(s)
| | - Seong Min Kang
- Department of Mechanical Engineering, Chungnam National University , Daejeon 34134, Republic of Korea
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Abstract
Skin pigmentation is one of the most strikingly variable phenotypes in humans, therefore making cutaneous pigmentation disorders frequent symptoms manifesting in a multitude of forms. The most common among them include lentigines, postinflammatory hyperpigmentation, dark eye circles, and melasma. Variability of skin tones throughout the world is well-documented, some skin tones being reported as more susceptible to pigmentation disorders than others, especially in Asia and India. Furthermore, exposure to ultraviolet radiation is known to trigger or exacerbate pigmentation disorders. Preventive strategies for photoprotection and treatment modalities including topical and other medical approaches have been adopted by dermatologists to mitigate these disorders. This review article outlines the current knowledge on pigmentation disorders including pathophysiology, molecular profiling, and therapeutic options with a special focus on the Indian population.
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Affiliation(s)
- Stephanie Nouveau
- Department of Advanced Research, L'Oreal Research and Innovation, France
| | - Divya Agrawal
- Department of Advanced Research, L'Oreal India Pvt. Limited, Mumbai, Maharashtra, India
| | - Malavika Kohli
- Department of Dermatology, Jaslok Hospital and Breach Candy Hospital Trust, Mumbai, Maharashtra, India
| | - Francoise Bernerd
- Department of Advanced Research, L'Oreal Research and Innovation, France
| | - Namita Misra
- Department of Advanced Research, L'Oreal India Pvt. Limited, Mumbai, Maharashtra, India
| | - Chitra Shivanand Nayak
- Department of Dermatology, Leprology and Venereology, Topiwala National Medical College and B. Y. L. Nair Charitable Hospital, Mumbai, Maharashtra, India
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Penacchio O, Cuthill IC, Lovell PG, Ruxton GD, Harris JM. Orientation to the sun by animals and its interaction with crypsis. Funct Ecol 2015; 29:1165-1177. [PMID: 26937063 PMCID: PMC4758631 DOI: 10.1111/1365-2435.12481] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 03/17/2015] [Indexed: 11/28/2022]
Abstract
Orientation with respect to the sun has been observed in a wide range of species and has generally been interpreted in terms of thermoregulation and/or ultraviolet (UV) protection. For countershaded animals, orientation with respect to the sun may also result from the pressure to exploit the gradient of coloration optimally to enhance crypsis. Here, we use computational modelling to predict the optimal countershading pattern for an oriented body. We assess how camouflage performance declines as orientation varies using a computational model that incorporates realistic lighting environments. Once an optimal countershading pattern for crypsis has been chosen, we determine separately how UV protection/irradiation and solar thermal inflow fluctuate with orientation. We show that body orientations that could optimally use countershading to enhance crypsis are very similar to those that allow optimal solar heat inflow and UV protection. Our findings suggest that crypsis has been overlooked as a selective pressure on orientation and that new experiments should be designed to tease apart the respective roles of these different selective pressures. We propose potential experiments that could achieve this.
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Affiliation(s)
- Olivier Penacchio
- School of Psychology and Neuroscience University of St Andrews South Street St Andrews Fife KY16 9JP UK
| | - Innes C Cuthill
- School of Biological Sciences Life Sciences Building 24 Tyndall Avenue Bristol BS8 1TQ UK
| | - P George Lovell
- School of Psychology and Neuroscience University of St Andrews South Street St Andrews Fife KY16 9JP UK; Division of Psychology Social and Health Sciences Abertay University Dundee DD1 1HG UK
| | - Graeme D Ruxton
- School of Biology Dyers Brae University of St Andrews St Andrews Fife KY16 9TH UK
| | - Julie M Harris
- School of Psychology and Neuroscience University of St Andrews South Street St Andrews Fife KY16 9JP UK
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Abstract
Skin has been reported to reflect the general inner-health status and aging. Nutrition and its reflection on skin has always been an interesting topic for scientists and physicians throughout the centuries worldwide. Vitamins, carotenoids, tocopherols, flavonoids and a variety of plant extracts have been reported to possess potent anti-oxidant properties and have been widely used in the skin care industry either as topically applied agents or oral supplements in an attempt to prolong youthful skin appearance. This review will provide an overview of the current literature "linking" nutrition with skin aging.
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Affiliation(s)
- Silke K. Schagen
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center; Dessau, Germany
| | - Vasiliki A. Zampeli
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center; Dessau, Germany
- Laboratory for Biogerontology, Dermato-Pharmacology and Dermato-Endocrinology; Institute of Clinical Pharmacology and Toxicology; Charité Universitaetsmedizin Berlin; Berlin, Germany
| | - Evgenia Makrantonaki
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center; Dessau, Germany
- Laboratory for Biogerontology, Dermato-Pharmacology and Dermato-Endocrinology; Institute of Clinical Pharmacology and Toxicology; Charité Universitaetsmedizin Berlin; Berlin, Germany
| | - Christos C. Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center; Dessau, Germany
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