keyword
MENU ▼
Read by QxMD icon Read
search

Sunscreen

keyword
https://www.readbyqxmd.com/read/29148618/interest-in-tanning-beds-and-sunscreen-in-german-speaking-countries
#1
Michael C Kirchberger, Laura F Kirchberger, Thomas K Eigentler, Raphael Reinhard, Carola Berking, Gerold Schuler, Lucie Heinzerling, Markus V Heppt
BACKGROUND: The growing incidence of nearly all types of skin cancer can be attributed to increased exposure to natural or artificial ultraviolet (UV) radiation. However, there is a scarcity of statistical data on risk behavior or sunscreen use, which would be important for any prevention efforts. METHODS: Using the search engine Google(®) , we analyzed search patterns for the terms Solarium (tanning bed), Sonnencreme (sunscreen), and Sonnenschutz (sun protection) in Germany, Austria, and Switzerland between 2004 and 2016, and compared it to search patterns worldwide...
November 17, 2017: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/29147456/prevalence-of-sun-protection-at-outdoor-recreation-and-leisure-venues-at-resorts-in-north-america
#2
Barbara J Walkosz, Michael D Scott, David B Buller, Peter A Andersen, Larry Beck, Gary R Cutter
Background: Exposure to solar ultra violet radiation (UVR) is a primary risk factor for skin cancer. Vacationers often fail to protect themselves from harmful UVR. Purpose: The study assessed the sun protection practices of resort guests in various outdoor leisure and recreation venues during warm-weather seasons. Method: 41 North American resorts were enrolled in a quasi-experimental randomized controlled trial. Adult guests were observed (n=4091) and surveyed (n=3694) in a cross sectional sample...
2017: American Journal of Health Education
https://www.readbyqxmd.com/read/29142178/actual-consumption-amount-of-personal-care-products-reflecting-japanese-cosmetic-habits
#3
Masahiko Yamaguchi, Daisuke Araki, Takeshi Kanamori, Yasuko Okiyama, Hirokazu Seto, Masaki Uda, Masahito Usami, Yutaka Yamamoto, Takuji Masunaga, Hitoshi Sasa
Safety assessments of cosmetics are carried out by identifying possible harmful effects of substances in cosmetic products and assessing the exposure to products containing these substances. The present study provided data on the amounts of cosmetic products consumed in Japan to enhance and complement the existing data from Europe and the United States, i.e., the West. The outcomes of this study increase the accuracy of exposure assessments and enable more sophisticated risk assessment as a part of the safety assessment of cosmetic products...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/29131317/molecular-photoprotection-of-human-keratinocytes-in-vitro-by-the-naturally-occurring-mycosporine-like-amino-acid-maa-palythine
#4
K P Lawrence, R Gacesa, P F Long, A R Young
BACKGROUND: Solar ultraviolet radiation (UVR) induces molecular and genetic changes in the skin, which result in skin cancer, photoageing and photosensitivity disorders. The use of sunscreens is advocated to prevent such photodamage, however most formulations contain synthetic UVR filters that are non-biodegradable and can damage fragile marine ecosystems. Mycosporine-like amino acids (MAA) are natural UVR-absorbing compounds that have evolved in marine species for protection against chronic UVR exposure in shallow-water habitats...
November 13, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/29131088/development-and-evaluation-of-lipid-nanoparticles-containing-natural-botanical-oil-for-sun-protection-characterization-and-in-vitro-and-in-vivo-human-skin-permeation-and-toxicity
#5
Newton Andréo-Filho, Antonio Vinicius Kosiski Bim, Telma Mary Kaneko, Nidia Ayumi Kitice, Isha N Haridass, Eman Abd, Patricia Santos Lopes, Sachin S Thakur, Harendra S Parekh, Michael S Roberts, Jeffrey E Grice, Heather A E Benson, Vânia Rodrigues Leite-Silva
The use of sunscreen products is widely promoted by schools, government agencies, and health-related organizations to minimize sunburn and skin damage. In this study, we developed stable solid lipid nanoparticles (SLNs) containing the chemical UV filter octyl methoxycinnamate (OMC). In parallel, we produced similar stable SLNs in which 20% of the OMC content was replaced by the botanical urucum oil. When these SLNs were applied to the skin of human volunteers, no changes in fluorescence lifetimes or redox ratios of the endogenous skin fluorophores were seen, suggesting that the formulations did not induce toxic responses in the skin...
November 4, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/29124711/from-uv-protection-to-protection-in-the-whole-spectral-range-of-the-solar-radiation-new-aspects-of-sunscreen-development
#6
Leonhard Zastrow, Martina C Meinke, Stephanie Albrecht, Alexa Patzelt, Juergen Lademann
Sunscreens have been constantly improving in the past few years. Today, they provide an efficient protection not only in the UVB but also in the UVA spectral region of the solar radiation. Recently it could be demonstrated that 50% of all free radicals induced in the skin due to solar radiation are formed in the visible and infrared spectral region. The good protective efficacy of sunscreens in the UV region prompts people to stay much longer in the sun than if they had left their skin unprotected. However, as no protection in the visible and infrared spectral region is provided, high amounts of free radicals are induced here that could easily exceed the critical radical concentration...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29124691/polymorphous-light-eruption
#7
Marcella Guarrera
Polymorphous light eruption (PLE) is the commonest immuno-mediated photodermatosis. It occurs after solar or artificial UV-light exposure and affects only the sun-exposed areas with preference of the V-area of the chest, of arms and forearms, legs, upper part of the back, and rarely the face. The lesions are itching or burning, and vary morphologically from erythema to papules, vesico-papules and occasionally blisters, plaques, sometimes erythema multiforme-like, insect bite-like wheals and purpura. The clinical manifestations befall within a few hours to days from light exposure, last a few days, and subside in about a week without sequelae...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29124118/chemical-analysis-and-evaluation-of-antioxidant-antimicrobial-and-photoprotective-activities-of-schinopsis-brasiliensis-engl-anacardiaceae
#8
Sarah Raquel Gomes de Lima-Saraiva, Fernanda Granja da Silva Oliveira, Raimundo Gonçalves de Oliveira Junior, Camila de Souza Araújo, Ana Paula de Oliveira, Alessandra Gomes Marques Pacheco, Larissa Araújo Rolim, Elba Lúcia Cavalcanti de Amorim, Francine Celise Siqueira César, Jackson Roberto Guedes da Silva Almeida
Schinopsis brasiliensis Engl. is a native plant of Caatinga which has high concentrations of compounds capable of absorbing ultraviolet light, suggesting its potential application for the development of sunscreen preparations. After its identification and collection, this vegetable drug was submitted to a physicochemical analysis through the preparation of ethanolic extract. The phytochemical screening and analysis of extracts were carried out by high-performance liquid chromatography (HPLC) evaluation. The antioxidant activity of the extract was evaluated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) method and β-carotene bleaching test...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/29112891/a-novel-research-model-for-evaluating-sunscreen-protection-in-the-uv-a1
#9
Sônia Aparecida Figueiredo, Dayane Cristina de Moraes, Fernanda Maria Pinto Vilela, Amanda Natalina de Faria, Marcelo Henrique Dos Santos, Maria José Vieira Fonseca
The use of a broad spectrum sunscreen is considered one of the main and most popular measures for preventing the damaging effects of ultraviolet radiation (UVR) on the skin. In this study we have developed a novel in vitro method to assess sunscreens efficacy to protect calcineurin enzyme activity, a skin cell marker. The photoprotective efficacy of sunscreen products was assessed by measuring the UV-A1 radiation-induced depletion of calcineurin (Cn) enzyme activity in primary neonatal human dermal fibroblast (HDFn) cell lysates...
October 28, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29111853/metabolism-and-disposition-of-2-ethylhexyl-p-methoxycinnamate-following-oral-gavage-and-dermal-exposure-in-harlan-sprague-dawley-rats-and-b6c3f1-n-mice-and-in-hepatocytes-in-vitro
#10
Timothy R Fennell, James M Mathews, Rodney W Snyder, Yang Hong, Scott L Watson, Sherry R Black, Barry S McIntyre, Suramya Waidyanatha
1. 2-Ethylhexyl-p-methoxycinnamate (EHMC) is commonly used as an ingredient in sunscreens, resulting in potential oral and dermal exposure in humans. 2. Clearance and metabolism of EHMC in hepatocytes and disposition and metabolism of EHMC in rodents following oral (8 to 800 mg/kg) intravenous (IV) (8 mg/kg), or dermal (0.8 to 80 mg/kg representing 0.1 to 10% formulation concentration) exposure to [(14)C]EHMC were investigated in rats and mice. 3. EHMC was rapidly cleared from rat and mouse hepatocytes (half-life ≤ 3...
November 7, 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/29110595/the-impact-of-ultraviolet-radiation-on-barrier-function-in-human-skin-molecular-mechanisms-and-topical-therapeutics
#11
Abdulaziz Alhasaniah, Michael J Sherratt, Catherine O'Neill
A competent epidermal barrier is crucial for terrestrial mammals. This barrier must keep in water and prevent entry of noxious stimuli. Most importantly, the epidermis must also be a barrier to ultraviolet radiation (UVR) from the sunlight. Currently, the effects of ultraviolet radiation on epidermal barrier function are poorly understood. However, studies in mice and more limited work in humans suggest that the epidermal barrier becomes more permeable, as measured by increased transepidermal water loss, in response UVR, at doses sufficiently high to induce erythema...
November 6, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29110466/degradation-of-organic-uv-filters-in-chlorinated-seawater-swimming-pools-transformation-pathways-and-bromoform-formation
#12
Tarek Manasfi, Bruno Coulomb, Sylvain Ravier, Jean-Luc Boudenne
Organic ultraviolet (UV) filters are used in sunscreens and other personal-care products to protect against harmful effects of exposure to UV solar radiation. Little is known about the fate of UV filters in seawater swimming pools disinfected with chlorine. The present study investigated the occurrence and fate of five commonly used organic UV filters, namely dioxybenzone, oxybenzone, avobenzone, 2-ethylhexyl-4-methoxycinnamate, and octocrylene, in chlorinated seawater swimming pools. Pool samples were collected to monitor the variation of UV filter concentrations during pool opening hours...
November 7, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29105107/sunscreen-formulations-do-not-interfere-with-sweat-cooling-during-exercise
#13
Hao Ou-Yang, Karen Meyer, Tim Houser, Gary Grove
OBJECTIVE: Sweating plays a critical role in maintaining thermal balance and keeping skin cool during exercise. People often wear sunscreens on hot summer days for sun protection. Most recreational sunscreens are designed to be water and sweat resistant, so that sweating will not remove or compromise the protection. The objective of this study was to determine whether wearing sweat-resistant sunscreen might impede natural sweating, potentially interfering with thermal regulation and resulting in the elevation of skin temperature...
November 3, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/29089638/a-quantitative-and-non-contact-technique-to-characterise-microstructural-variations-of-skin-tissues-during-photo-damaging-process-based-on-mueller-matrix-polarimetry
#14
Yang Dong, Honghui He, Wei Sheng, Jian Wu, Hui Ma
Skin tissue consists of collagen and elastic fibres, which are highly susceptible to damage when exposed to ultraviolet radiation (UVR), leading to skin aging and cancer. However, a lack of non-invasive detection methods makes determining the degree of UVR damage to skin in real time difficult. As one of the fundamental features of light, polarization can be used to develop imaging techniques capable of providing structural information about tissues. In particular, Mueller matrix polarimetry is suitable for detecting changes in collagen and elastic fibres...
October 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29080360/quantifying-the-visual-appearance-of-sunscreens-applied-to-the-skin-using-indirect-computer-image-colorimetry
#15
Vincent Richer, Pegah Kharazmi, Tim Lee, Sunil Kalia, Harvey Lui
BACKGROUND: There is no accepted method to objectively assess the visual appearance of sunscreens on the skin. METHODS: We present a method for sunscreen application, digital photography, and computer analysis to quantify the appearance of the skin after sunscreen application. Four sunscreen lotions were applied randomly at densities of 0.5, 1.0, 1.5 and 2.0 mg/cm(2) to areas of the back of 29 subjects. Each application site had a matched contralateral control area...
October 28, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/29076601/uv-b-induced-biosynthesis-of-a-novel-sunscreen-compound-in-solar-radiation-and-desiccation-tolerant-cyanobacteria
#16
Jin-Long Shang, Zhong-Chun Zhang, Xiao-Yue Yin, Min Chen, Fu-Hua Hao, Kai Wang, Jun-Li Feng, Hai-Feng Xu, Yan-Chao Yin, Hui-Ru Tang, Bao-Sheng Qiu
The small-molecule sunscreen compounds, mycosporine-like amino acids (MAAs), have strong UV absorption and can protect cyanobacteria against UV-B damage. However, the molecular mechanism underlying UV-B signaling and MAA chemical diversity remain largely unclear. Here, we identified a five-gene cluster for MAA biosynthesis in the solar radiation and desiccation tolerant cyanobacterium Nostoc flagelliforme. A LuxR family protein OrrA was identified as a positive UV-B responsive regulator binding to the promoter region of this gene cluster...
October 27, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/29065484/mycosporine-like-amino-acids-potential-health-and-beauty-ingredients
#17
REVIEW
Ewelina Chrapusta, Ariel Kaminski, Kornelia Duchnik, Beata Bober, Michal Adamski, Jan Bialczyk
Human skin is constantly exposed to damaging ultraviolet radiation (UVR), which induces a number of acute and chronic disorders. To reduce the risk of UV-induced skin injury, people apply an additional external protection in the form of cosmetic products containing sunscreens. Nowadays, because of the use of some chemical filters raises a lot of controversies, research focuses on exploring novel, fully safe and highly efficient natural UV-absorbing compounds that could be used as active ingredients in sun care products...
October 21, 2017: Marine Drugs
https://www.readbyqxmd.com/read/29064988/signs-of-facial-aging-in-men-in-a-diverse-multinational-study-timing-and-preventive-behaviors
#18
MULTICENTER STUDY
Anthony M Rossi, Joseph Eviatar, Jeremy B Green, Robert Anolik, Michael Eidelman, Terrence C Keaney, Vic Narurkar, Derek Jones, Julia Kolodziejczyk, Adrienne Drinkwater, Conor J Gallagher
BACKGROUND: Men are a growing patient population in aesthetic medicine and are increasingly seeking minimally invasive cosmetic procedures. OBJECTIVE: To examine differences in the timing of facial aging and in the prevalence of preventive facial aging behaviors in men by race/ethnicity. METHODS: Men aged 18 to 75 years in the United States, Canada, United Kingdom, and Australia rated their features using photonumeric rating scales for 10 facial aging characteristics...
November 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/29049974/photolysis-study-of-octyl-p-methoxycinnamate-loaded-microemulsion-by-molecular-fluorescence-and-chemometric-approach
#19
Danielle Silva Nascimento, Matías Insausti, Beatriz Susana Fernández Band, Marcos Grünhut
Octyl p-methoxycinnamate (OMC) is one of the most widely used sunscreen agents. However, the efficiency of OMC as UV filter over time is affected due to the formation of the cis-isomer which presents a markedly lower extinction coefficient (εcis=12,600L mol(-1)cm(-1) at 291nm) than the original trans-isomer (εtrans=24,000L mol(-1)cm(-1) at 310nm). In this work, a novel carrier for OMC based on an oil-in-water microemulsion is proposed in order to improve the photostability of this sunscreen. The formulation was composed of 29...
October 10, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29048595/ultraviolet-radiation-and-skin-cancer-risk-in-offshore-workers
#20
J S Stenehjem, T E Robsahm, M Bråtveit, S O Samuelsen, J Kirkeleit, T K Grimsrud
Background: Excess skin cancer mortality and incidence have been reported among both land-based and offshore petroleum workers. The association between skin cancer and ultraviolet radiation (UVR) exposure has not been examined in these workers, although they have long off-duty periods and high average income that may allow travelling to sunny destinations. In addition, they have access to solariums free of charge on many accommodation platforms. Aims: To prospectively examine risk of incident cutaneous melanoma (CM) and non-melanoma skin cancer (NMSC), according to sun-tanning habits with adjustment for aromatic hydrocarbon exposure...
October 1, 2017: Occupational Medicine
keyword
keyword
2347
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"