The Experts below are selected from a list of 918 Experts worldwide ranked by ideXlab platform
Dallas R English - One of the best experts on this subject based on the ideXlab platform.
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the impact of the kidskin sun protection intervention on summer Suntan and reported sun exposure was it sustained
Preventive Medicine, 2006Co-Authors: Elizabeth Milne, Peter Jacoby, Billie Gilescorti, Donna Cross, Robyn Johnston, Dallas R EnglishAbstract:Abstract Background. Recognition that early sun exposure is an important risk factor for cutaneous melanoma in white populations has led to efforts to reduce children's sun exposure. ‘Kidskin’ was a non-randomized, school-based sun protection intervention trial in Perth, Western Australia (1995–1999). Its aim was to determine the extent to which such a program could reduce children's sun exposure. Methods. Kidskin involved 1614 children assigned to one of three groups: a Control, a ‘Moderate’ and a ‘High’ intervention group of 14, 11 and 8 schools respectively. The unit of assignment was the school. Control schools received the standard health education curriculum, while intervention schools received a multi-component intervention including a specially designed curriculum. The High intervention group received additional components. Outcomes included parent reported sun-related behaviors and objectively measured Suntan at the end of summer vacation. These outcomes were observed every 2 years. Statistical analyses allowed for correlations between students within schools. Results . Kidskin initially had favorable effects on reported sun exposure and measured Suntan. However, at the end of the 4-year program, and again 2 years later, little evidence of a favorable effect remained. Conclusions. The benefits of childhood sun protection interventions may not last beyond the life of the program.
Wojciech Macyk - One of the best experts on this subject based on the ideXlab platform.
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singlet oxygen generation in the presence of titanium dioxide materials used as sunscreens in Suntan lotions
Journal of Photochemistry and Photobiology A-chemistry, 2010Co-Authors: Marta Buchalska, Gabriela Kras, Marcin Oszajca, Wieslaw łasocha, Wojciech MacykAbstract:Abstract The goal of this study was to test photoreactivity of commercially available Suntan lotions and their components (mainly TiO2). Isolated water insoluble components containing titanium dioxide appeared almost non-active in the tests of 4-chlorophenol degradation, however a fast UV-light induced degradation of azur B and oxidation of α-terpinene to ascaridol in the presence of these materials was observed. The photoreactivity of Suntan lotions and their components was compared to the photoactivity of phenalenone (an efficient 1O2 photosensitizer). The results have proven a relatively low efficiency of hydroxyl radicals formation, however significant rates of reactions involving singlet oxygen were observed in the presence of either the components of the cosmetics or the Suntan lotions used as received. Moreover, an efficient photocurrent generation by photoelectrodes made of isolated TiO2 materials reflects their photoredox properties. Although singlet oxygen scavengers used as additives in Suntan lotions might decrease the risk related to generation of this reactive oxygen species, producers of cosmetics containing titanium dioxide should consider testing TiO2 photoactivity in reference to 1O2 generation.
Tsunehiko Nishimura - One of the best experts on this subject based on the ideXlab platform.
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Association between Skin Phototype and Radiation Dermatitis in Patients with Breast Cancer Treated with Breast-conserving Therapy: Suntan Reaction could be a Good Predictor for Radiation Pigmentation
2016Co-Authors: Hideya Yamazaki, Ken Yoshida, Takuya Nishimura, Kana Kobayashi, Takuji Tsubokura, Naohiro Kodani, Norihiro Aibe, Tsunehiko NishimuraAbstract:Breast-conserving therapy/Breast cancer/Radiation dermatitis. The purpose of this study was to evaluate the significance of skin phototype (Suntan or sunburn type) in association with radiation dermatitis in patients with breast cancer who underwent postoperative radio-therapy after breast-conserving surgery because phototype could predict sunlight reaction. We divided patients into two phototypes (58 Suntan/darkening and 28 sunburn/reddening types) according to self-reports before radiotherapy. We examined skin color changes in 86 patients who underwent breast-conserving surgery followed by 50 Gy/25 fractions (median) of radiotherapy with or without boost radia-tion (10 Gy/5 fractions). Color change was assessed according to CIE L*a*b * space, which is defined by the Commission Internationale de l’Éclairage (CIE) in 1976 for quantitative color assessment. The patients were also assessed by individual typology angle (ITA°; indicator of skin color calculated by L*a*b* space) and Common Terminology Criteria for Adverse Event v3.0 (CTCAE v3). Radiation therapy changed all values except the b * value, and the Suntan type showed a greater darkening response associ-ated with radiation dermatitis than did the sunburn type in terms of ITA ° value change (p = 0.04), whereas the sunburn type did not show higher a * value (reddening). By CTCAE v3 classifications, a Grade 2 reac-tion appeared in 14 % sunburn patients and in 31 % of the Suntan group, respectively (p = 0.16). Suntan type predicted higher pigmentation associated with radiation dermatitis. Self-reported phototype has the potential to be a good predictor of skin sensitivity to radiation exposure for clinical screening
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association between skin phototype and radiation dermatitis in patients with breast cancer treated with breast conserving therapy Suntan reaction could be a good predictor for radiation pigmentation
Journal of Radiation Research, 2011Co-Authors: Hideya Yamazaki, Ken Yoshida, Takuya Nishimura, Kana Kobayashi, Takuji Tsubokura, Naohiro Kodani, Norihiro Aibe, Tsunehiko NishimuraAbstract:Breast-conserving therapy/Breast cancer/Radiation dermatitis. The purpose of this study was to evaluate the significance of skin phototype (Suntan or sunburn type) i n association with radiation dermatitis in patients with breast cancer who underwent postoperative radiotherapy after breast-conserving surgery because phototype could predict sunlight reaction. We divided patie nts into two phototypes (58 Suntan/darkening and 28 sunburn/reddening types) according to selfreports before radiotherapy. We examined skin color changes in 86 patients who underwent breastconserving surgery followed by 50 Gy/25 fractions (median) of radiotherapy with or without boost radiation (10 Gy/5 fractions). Color change was assessed according to CIE L*a*b* space, which is defined by th e Commission Internationale de l’Eclairage (CIE) in 1976 for quantitative color assessment. The patients were also assessed by individual typology angle (ITA°; indicator of skin color calculated by L*a*b* space) and Common Terminology Criteria for Adverse Event v3.0 (CTCAE v3). Radiation therapy changed all values except the b* value, and the Suntan type showed a greater darkening response associated with radiation dermatitis than did the sunburn type in terms of ITA° value change (p = 0.04), whereas the sunburn type did not show higher a* value (reddening). By CTCAE v3 classifications, a Grade 2 reaction appeared in 14% sunburn patients and in 31% of the Suntan group, respectively (p = 0.16 ). Suntan type predicted higher pigmentation associated with radiation dermatitis. Self-reported phototype has the potential to be a good predictor of skin sensitivity to radiation exposure for clinical screening.
Marta Buchalska - One of the best experts on this subject based on the ideXlab platform.
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singlet oxygen generation in the presence of titanium dioxide materials used as sunscreens in Suntan lotions
Journal of Photochemistry and Photobiology A-chemistry, 2010Co-Authors: Marta Buchalska, Gabriela Kras, Marcin Oszajca, Wieslaw łasocha, Wojciech MacykAbstract:Abstract The goal of this study was to test photoreactivity of commercially available Suntan lotions and their components (mainly TiO2). Isolated water insoluble components containing titanium dioxide appeared almost non-active in the tests of 4-chlorophenol degradation, however a fast UV-light induced degradation of azur B and oxidation of α-terpinene to ascaridol in the presence of these materials was observed. The photoreactivity of Suntan lotions and their components was compared to the photoactivity of phenalenone (an efficient 1O2 photosensitizer). The results have proven a relatively low efficiency of hydroxyl radicals formation, however significant rates of reactions involving singlet oxygen were observed in the presence of either the components of the cosmetics or the Suntan lotions used as received. Moreover, an efficient photocurrent generation by photoelectrodes made of isolated TiO2 materials reflects their photoredox properties. Although singlet oxygen scavengers used as additives in Suntan lotions might decrease the risk related to generation of this reactive oxygen species, producers of cosmetics containing titanium dioxide should consider testing TiO2 photoactivity in reference to 1O2 generation.
Bruno W. - One of the best experts on this subject based on the ideXlab platform.
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Melanoma risk factors, perceived threat and intentional tanning: An international online survey
'Ovid Technologies (Wolters Kluwer Health)', 2010Co-Authors: Branstrom R., Chang Y. -m., Kasparian N., Affleck P., Tibben A., Aspinwall L. G., Azizi E., Baron-epel O., Battistuzzi L., Bruno W.Abstract:Cutaneous melanoma continues to increase in incidence in many countries, and intentional tanning is a risk factor for melanoma. The aim of this study was to understand how melanoma risk factors, perceived threat and preferences for a Suntan relate to intentional tanning. Self-report data were collected on behalf of GenoMEL (www.genomel.org) from the general population using an online survey. A total of 8178 individuals completed the survey, with 72.8% of respondents being from Europe, 12.1% from Australia, 7.1% from the US, 2.5% from Israel and 5.5% from other countries. Seven percent of respondents had previously been diagnosed with melanoma and 8% had at least one first-degree relative with a previous melanoma. Overall, 70% reported some degree of intentional tanning during the past year, and 38% of respondents previously diagnosed with melanoma had intentionally tanned. The total number of risk factors was positively correlated with perceived risk of melanoma [correlation coefficient (\u3c1) = 0.27], and negatively correlated with intentional tanning (\u3c1 = -0.16). Preference for a dark Suntan was the strongest predictor of intentional tanning [regression coefficient (\u3b2) = 0.35, P<0.001], even in those with a previous melanoma (\u3b2 = 0.33, P<0.01). A substantial proportion of participants reported having phenotypic and behavioural risk factors for melanoma. The preference regarding Suntans seemed more important in the participants' decision to intentionally tan than their perceived risk of developing melanoma, and this finding was consistent among respondents from different countries. The drive to sunbathe to tan is a key factor to be moderated if melanoma incidence is to be reduced. \ua9 2010 Wolters Kluwer Health | Lippincott Williams & Wilkins
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Melanoma risk factors, perceived threat and intentional tanning: an international online survey
'Ovid Technologies (Wolters Kluwer Health)', 2010Co-Authors: Branstrom R., Kasparian N., Affleck P., Tibben A., Azizi E., Baron-epel O., Battistuzzi L., Chang Y.m., Aspinwall L.g., Bruno W.Abstract:Cutaneous melanoma continues to increase in incidence in many countries, and intentional tanning is a risk factor for melanoma. The aim of this study was to understand how melanoma risk factors, perceived threat and preferences for a Suntan relate to intentional tanning. Self-report data were collected on behalf of GenoMEL (www.genomel.org) from the general population using an online survey. A total of 8178 individuals completed the survey, with 72.8% of respondents being from Europe, 12.1% from Australia, 7.1% from the US, 2.5% from Israel and 5.5% from other countries. Seven percent of respondents had previously been diagnosed with melanoma and 8% had at least one first-degree relative with a previous melanoma. Overall, 70% reported some degree of intentional tanning during the past year, and 38% of respondents previously diagnosed with melanoma had intentionally tanned. The total number of risk factors was positively correlated with perceived risk of melanoma [correlation coefficient (rho) = 0.27], and negatively correlated with intentional tanning (rho = -0.16). Preference for a dark Suntan was the strongest predictor of intentional tanning [regression coefficient (beta)= 0.35, P
