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https://www.readbyqxmd.com/read/28633754/total-body-skin-examination-adherence-among-young-adults-with-an-increased-risk-for-skin-cancer
#1
Julie Williams Merten, Jessica L King, Erin Largo-Wight
Although ultraviolent radiation exposure and skin cancer rates are rising in the US, there is not a consistent national message calling for routine total body skin examinations (TBSE) by a healthcare provider. This pilot study examined TBSE rates among adults at an increased risk for skin cancer (history of sunburn, indoor tanning use, excessive UV exposure, poor sunscreen use). Overall skin cancer prevention behaviors were insufficient among respondents (n=953) and only a quarter of respondents considered at an increased risk for skin cancer reported a TBSE...
June 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28632795/sun-protection-for-infants-parent-behaviors-and-beliefs-in-miami-florida
#2
Fleta N Bray, Sebastian H Verne, Jessica Cervantes, Alexandra Balaban, Eric R Bray, Brian J Simmons, Keyvan Nouri
Children who are not adequately protected from the sun have an increased risk for developing skin cancers later in life. The primary objective of this study was to determine the sun protection behaviors that black and Hispanic parents in Miami, Florida, employ in infants younger than 6 months. Secondary objectives included determining if this patient population is at risk for infant sunburns and tanning, beliefs among parents regarding sunscreen's efficacy in the prevention of skin cancers, and limitations of sunscreen use...
May 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28628693/understanding-the-role-of-photolyases-photoprotection-and-beyond
#3
Neal Bhatia, Brian Berman, Roger I Ceilley, Leon H Kircik
<p>The limitations of photoprotection modalities have been the inability to arrest the progression of photodamage. Chemoprevention strategies involving a sunscreen has been incomplete because of the need to induce sustained repair of mutations and slow carcinogenesis. Photolyases, or photoreactivation enzymes, serve the role of repairing mutations and damage to DNA induced by ultraviolet (UV) radiation and therefore influence the initiation phases of carcinogenesis. As these enzymes are absent in humans, exogenous forms have been manufactured and are now utilized in topical agents to supplement and augment the innate repair mechanisms that are mostly inefficient...
May 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28628692/a-novel-technology-sunscreen-with-actinic-damage-repair
#4
Leon H Kircik Md
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May 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28623841/development-of-a-hplc-method-for-determination-of-four-uv-filters-in-sunscreen-and-its-application-to-skin-penetration-studies
#5
Carla Souza, Patrícia M B G Maia Campos
This study describes the development, validation and application of a high-performance liquid chromatography (HPLC) method for the simultaneous determination of the in vitro skin penetration profile of four UV filters on porcine skin. Experiments were carried out on a gel-cream formulation containing the following UV filters: diethylamino hydroxybenzoyl hexyl benzoate (DHHB), bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT), methylene bis-benzotriazolyl tetramethylbutylphenol (MBBT) and ethylhexyl triazone (EHT)...
June 17, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28613256/strawberry-based-cosmetic-formulations-protect-human-dermal-fibroblasts-against-uva-induced-damage
#6
Massimiliano Gasparrini, Tamara Y Forbes-Hernandez, Sadia Afrin, Patricia Reboredo-Rodriguez, Danila Cianciosi, Bruno Mezzetti, Josè L Quiles, Stefano Bompadre, Maurizio Battino, Francesca Giampieri
Extreme exposure of skin to Ultraviolet A (UVA)-radiation may induce a dysregulated production of reactive oxygen species (ROS) which can interact with cellular biomolecules leading to oxidative stress, inflammation, DNA damage, and alteration of cellular molecular pathways, responsible for skin photoaging, hyperplasia, erythema, and cancer. For these reasons, the use of dietary natural bioactive compounds with remarkable antioxidant activity could be a strategic tool to counteract these UVA-radiation-caused deleterious effects...
June 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28609550/satisfaction-of-mountain-guides-with-high-sun-protection-as-a-tool-to-prevent-nmsc
#7
Linda Tizek, Julia Krause, Tilo Biedermann, Alexander Zink
BACKGROUND: NMSC is an occupational disease for outdoor workers in Germany since 2015. Sustainable prevention is demanded and sunscreen promoted as an effective tool. However, studies on the satisfaction of sunscreen users are rare. OBJECTIVE: To evaluate the satisfaction of mountain guides using a high SPF sunscreen product as an appropriate prevention tool for mountain guides. METHODS: Motivating mountain and ski guides in Germany to use very high protection sunscreen (SPF50+, Actinica Lotion) during a 4 to 8 hours workday followed by the completion of a self-filled paper-based questionnaire about their experience and satisfaction with the product...
June 13, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28602025/a-method-to-assess-the-protective-efficacy-of-sunscreens-against-visible-light-induced-pigmentation
#8
L Duteil, J Esdaile, Y Maubert, A Cathelineau, A Bouloc, C Queille-Roussel, T Passeron
BACKGROUND: Until now, photoprotection of human skin has involved the development of sunscreens effective in the ultraviolet (UV) domain. During the last ten years several studies have shown that besides the well-known damaging effects of UV, visible (400-700nm) and even infrared light (> 700 nm) can induce damage which contributes to photoaging. Furthermore, many photodermatoses are also known to be triggered by visible light (VL). OBJECTIVE/ METHOD: An in vivo method is proposed to assess the protective efficacy of sunscreens in the VL domain...
June 11, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/28595683/cholecalciferol-d%C3%A2-versus-ergocalciferol-d%C3%A2-in-older-adults
#9
Simona Dereje, Ilan Muradov, Samira Nazzal, Timothy Nguyen
Vitamin D is a fat-soluble vitamin that is naturally found in very few food sources. It is produced endogenously from ultraviolet light from the sun striking the skin and then triggering vitamin D synthesis and activation. Vitamin D helps promote calcium absorption in the gut, maintains adequate serum calcium and phosphate levels, promotes bone growth, modulates cell growth, and has many other roles. There have been an increasing number of people, especially in older adults, with vitamin D deficiency. This is in part a result of a reduction of sun exposure as people age, increase in use of sunscreen, and other factors...
June 1, 2017: Consultant Pharmacist: the Journal of the American Society of Consultant Pharmacists
https://www.readbyqxmd.com/read/28586535/ultrafast-excited-state-deactivation-dynamics-of-cyclotrisazobenzene-a-novel-type-of-uv-b-absorber
#10
Chavdar Slavov, Chong Yang, Luca Schweighauser, Hermann A Wegner, Andreas Dreuw, Josef Wachtveitl
Azobenzenes are widely utilized as molecular photoswitches for control of nanoscale processes. Their photoisomerization reaction is highly robust and is retained even in extremely rigid systems. Currently, it is not clear what geometric restrictions are required to block this isomerization successfully. We present here a combined experimental and theoretical study on the ultrafast dynamics of cyclotrisazobenzene (CTA) and demonstrate that the structural constraints in CTA prevent isomerization of the photoswitch units...
June 6, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28580469/photoprotection-extending-lessons-learned-from-studying-natural-sunscreens-to-the-design-of-artificial-sunscreen-constituents
#11
REVIEW
Lewis A Baker, Barbara Marchetti, Tolga N V Karsili, Vasilios G Stavros, Michael N R Ashfold
Evolution has ensured that plants and animals have developed effective protection mechanisms against the potentially harmful effects of incident ultraviolet radiation (UVR). Tanning is one such mechanism in humans, but tanning only occurs post-exposure to UVR. Hence, there is ever growing use of commercial sunscreens to pre-empt overexposure to UVR. Key requirements for any chemical filter molecule used in such a photoprotective capacity include a large absorption cross-section in the UV-A and UV-B spectral regions and the availability of one or more mechanisms whereby the absorbed photon energy can be dissipated without loss of the molecular integrity of the chemical filter...
June 19, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28573745/prevalence-of-sun-protective-behavior-and-intentional-sun-tanning-in-german-adolescents-and-adults-results-of-a-nationwide-telephone-survey
#12
T Görig, K Diehl, R Greinert, E W Breitbart, S Schneider
BACKGROUND: The incidence rate of melanoma in the Caucasian population is rising worldwide. One of the major environmental risk factors for melanoma is the exposure to ultraviolet (UV) radiation. To prevent skin damage caused by UV exposure, several organizations recommend wearing protective clothing, staying in the shade, avoiding the outdoors during midday, and using sunscreen. OBJECTIVE: to provide representative data on factors associated with sun-protective behaviors and intentional sun exposure during summertime in the German population...
June 2, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28571772/consumption-of-cosmetic-products-by-the-french-population-third-part-product-exposure-amount
#13
N Dornic, A S Ficheux, A C Roudot
A recent study in France provided valuable data on the frequency and amount of use of cosmetic products (Ficheux et al., 2015, 2016a). The aim of the present study was to generate Product Exposure Amount data, i.e. the amounts of cosmetics applied to the skin among the French population using the raw data collected during the previous enquiry. These data are useful to derive Consumer exposure level data which are paramount for skin sensitization risk assessments. Exposure data were generated for 69 different cosmetics, classified as products for the hair, face, buccal hygiene, hands, feet, body, shaving and depilation, sunscreens as well as products specifically intended for babies...
May 29, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28561775/stability-study-of-sunscreens-with-free-and-encapsulated-uv-filters-contained-in-plastic-packaging
#14
Benedetta Briasco, Priscilla Capra, Barbara Mannucci, Paola Perugini
Sunscreens play a fundamental role in skin cancer prevention and in protection against photo-aging. UV filters are often photo-unstable, especially in relation to their vehicles and, being lipophilic substances, they are able to interact with plastic packaging. Finally, UV filter stability can be significantly affected by the routine use of the product at high temperatures. This work aims to study the stability of sunscreen formulations in polyethylene packaging. Butyl methoxydibenzoylmethane and octocrylene, both in a free form and as encapsulated filters were chosen as UV filters...
May 31, 2017: Pharmaceutics
https://www.readbyqxmd.com/read/28558374/development-of-an-in-vitro-test-procedure-to-determine-the-direct-infrared-a-protection-of-sunscreens-and-non-cosmetic-samples
#15
Jan Carlos Quistdorf, Dieter Kockott, Birgit Garbe, Ulrike Heinrich, Hagen Tronnier, Nicole Braun
BACKGROUND: Every day human skin is exposed to infrared A (IRA) radiation as part of the natural sun rays. As IRA radiation accounts for around one third of the solar radiation, it has gained great attention concerning its effects on the human body and skin. In the past few years it has been discussed controversially whether IRA radiation (of solar origin) is harmful or not. Nonetheless, there are several sunscreens on the German market that claim IRA protection for themselves. AIMS: The present study seeks to find an experimental set-up and a test procedure for the determination and quantification of direct IRA protection (realized via reflection or absorption of the IRA radiation), since to our knowledge these do not yet exist...
May 31, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28554325/mycosporine-like-amino-acids-for-skin-photoprotection
#16
Karl P Lawrence, Paul F Long, Antony R Young
Excessive human exposure to solar ultraviolet radiation (UVR) continues to be a major public health concern, with skin cancer rates increasing year on year. The major protective measure is the use of synthetic UVR filters formulated into sunscreens, but there is growing concern that these chemicals cause damage to delicate marine ecosystems. One alternative is the use of biocompatible mycosporine-like amino acids (MAA), which occur naturally and are found predominantly in a wide range of marine species. Their role within nature is mainly thought to be photoprotective...
May 29, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28551143/screening-of-tio2-and-au-nanoparticles-in-cosmetics-and-determination-of-elemental-impurities-by-multiple-techniques-dls-sp-icp-ms-icp-ms-and-icp-oes
#17
Inmaculada de la Calle, Mathieu Menta, Marlène Klein, Fabienne Séby
Cosmetics are part of the daily life of most of the people. Thus, a complete characterization of the products we applied in our skin is necessary. In this work, an analytical investigation of a wide variety of cosmetics from the point of view of total element content and metallic nanoparticles (NPs) has been performed. Firstly, we analyzed the total element content by ICP-MS and ICP-OES after acid digestion as an assessment of the presence of metal impurities. Prohibited elements in cosmetics, according to the European Commission regulation No 1223/2009, were not detected, and only elements mentioned in the label were found (e...
August 15, 2017: Talanta
https://www.readbyqxmd.com/read/28549611/successful-short-desensitization-treatment-protocol-with-narrowband-uvb-phototherapy-tl-01-in-polymorphic-light-eruption
#18
A Combalia, C Fernández-Sartorio, X Fustà, D Morgado-Carrasco, S Podlipnik, P Aguilera
INTRODUCTION: Polymorphic light eruption (PLE) is a common idiopathic photodermatosis that typically presents with pruritic papular or papulovesicular lesions on sun-exposed skin between spring and autumn. In many subjects PLE is mild, and can usually be prevented by the use of broad-spectrum topical sunscreens and a gradual increase in sunlight exposure. However, in some individuals, sunlight exposure results in florid PLE and they often benefit from prophylactic desensitization treatment using phototherapy in early spring, an artificial method that induces a "hardening" phenomenon...
May 23, 2017: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/28544727/ultraviolet-radiation-accelerates-nras-mutant-melanomagenesis-a-cooperative-effect-blocked-by-sunscreen
#19
Rebecca C Hennessey, Andrea M Holderbaum, Anamaria Bonilla, Conor Delaney, James E Gillahan, Kathleen L Tober, Tatiana M Oberyszyn, Jonathan H Zippin, Christin E Burd
To mitigate melanoma risk, sunscreen use is widely advocated; yet, the ability of sunscreens to prevent melanoma remains controversial. Here, we test the tenet that sunscreens limit melanoma risk by blocking ultraviolet radiation (UV)-induced DNA damage using murine models that recapitulate the genetics and spontaneous evolution of human melanoma. We find that a single, non-erythematous dose of UV dramatically accelerates melanoma onset and increases tumor multiplicity in mice carrying an endogenous, melanocyte-specific NRas(61R) allele...
May 24, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/28540161/choctaw-nation-youth-sun-exposure-survey
#20
Dorothy A Rhoades, Martina Hawkins, Barbara Norton, Dannielle Branam, Tamela K Cannady, Justin Dvorak, Kai Ding, Ardis L Olson, Mark P Doescher
The incidence of skin cancer is rising among American Indians (AI) but the prevalence of harmful ultraviolet light (UVL) exposures among AI youth is unknown. In 2013, UVL exposures, protective behaviors, and attitudes toward tanning were assessed among 129 AI and Non-Hispanic (NHW) students in grades 8-12 in Southeastern Oklahoma. Sunburn was reported by more than half the AI students and most of the NHW students. One-third of AI students reported never using sunscreen, compared to less than one-fifth of NHW students, but racial differences were mitigated by propensity to burn...
September 2017: Preventive Medicine Reports
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