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1.
BMJ Open ; 14(5): e082045, 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38754877

RESUMO

INTRODUCTION: Reunion Island, a French overseas department, is located in the southern hemisphere, close to the Capricorn tropic. This island has a multicultural and multiethnic population of 860 000 inhabitants, a quarter of whom are at high risk of developing skin cancer due to intense ultraviolet radiation. Melanoma is responsible for the majority of skin cancer deaths. The early prevention of melanoma is based on sun protection in childhood, but French regulations are not adapted to the environmental conditions of this tropical region.The main objective of our study is to evaluate the effectiveness of three sun protection programs conducted in Reunionese primary schools through a pupil knowledge questionnaire. METHODS AND ANALYSIS: PRESOLRE is an interventional, open-label, cluster-randomised controlled trial, in four parallel arms, that is being conducted throughout 2022-2023 on Reunion Island. The trial design assumes an escalation interventional effect using: first, a control arm without proposed intervention (arm 1); second, an arm whose classes are encouraged to use the validated educational programme 'Living With the Sun' (LWS) (arm 2); third, an arm whose classes are encouraged to use both 'LWS' combined with 'Mission Soleil Réunion's sun protection awareness programme (arm 3); fourth, an arm benefiting from an intervention similar to arm 3, combined with the distribution of hats, sunglasses and sun creams (arm 4). In all, 1780 pupils from 18 classes of 20 pupils, on average, will be included. Randomisation applies to the classes of pupils (so defined as clusters). The primary outcome is based on the proportion of correct answers to the knowledge questions after the awareness programme, compared between the four arms using a linear mixed model with random intercept. ETHICS AND DISSEMINATION: The study obtained ethics approval in 2022 (ID: 2022-A00350-43). Results will be published in peer-reviewed journals. TRIAL REGISTRATION NUMBER: NCT05367180.


Assuntos
Instituições Acadêmicas , Neoplasias Cutâneas , Humanos , Neoplasias Cutâneas/prevenção & controle , Reunião , Criança , Protetores Solares/uso terapêutico , Protetores Solares/administração & dosagem , Conhecimentos, Atitudes e Prática em Saúde , Ensaios Clínicos Controlados Aleatórios como Assunto , Melanoma/prevenção & controle , Luz Solar/efeitos adversos , Feminino , Queimadura Solar/prevenção & controle , Masculino , Serviços de Saúde Escolar , Educação em Saúde/métodos
2.
Arch Dermatol Res ; 316(5): 189, 2024 May 22.
Artigo em Inglês | MEDLINE | ID: mdl-38775848

RESUMO

Many individuals with vitiligo are uncertain about their skin cancer risk, phototherapy risks, and recommended sun protective practices. This study examined the perceived skin cancer risk and sun protective practices among individuals living with vitiligo. A secondary objective was to understand where participants obtain this information. This was a prospective cross-sectional study. An online survey was distributed to vitiligo support group leaders globally who shared the survey with their members. Individuals over the age of 18 and with vitiligo were included. There were 209 survey respondents, the majority were between the ages 35-54 (45.5%, n = 95), female (70.8%, n = 148), White (66.0%, n = 138). Nearly half of respondents believed they were at increased risk of skin cancer because of their vitiligo (45.5%, n = 95) and nearly a quarter (22.5%, n = 47) believed that phototherapy increased their risk of skin cancer. Having vitiligo affected sun protective practices with less than a quarter (24.4%, n = 51) of respondents using sunscreen daily or often prior to their vitiligo diagnosis in comparison to the majority of respondents (60.3%, n = 126) using it after their vitiligo diagnosis. The three most common sources where patients obtained information were the internet and social media (46.4%, n = 97), vitiligo support groups (23.4%, n = 49), and dermatologists (20.6%, n = 43). Despite evidence indicating a decreased risk of skin cancer in individuals with vitiligo and supporting the safety of narrowband ultraviolet B phototherapy, many participants believed they were at an increased risk of skin cancer. Findings were sub-stratified and showed differences in sunscreen usage based on gender, skin color, and percent depigmentation. This study also found nearly half of respondents obtained information related to vitiligo from the internet and social media. The number of participants may limit the generalizability of the findings. Survey questionnaires are also subject to response bias. The findings from this study highlight demographic variations in sunscreen usage which may help guide the development of targeted interventions to improve sun protective behaviors among diverse populations with vitiligo. In addition, this study suggests certain sun protective practices and skin cancer risk perceptions may vary based on extent of depigmentation. Lastly, this study also demonstrates the internet and social media as a popular source for obtaining information, emphasizing the need for dermatologists to leverage various online communication channels to help disseminate accurate information.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Neoplasias Cutâneas , Protetores Solares , Vitiligo , Humanos , Vitiligo/prevenção & controle , Feminino , Estudos Transversais , Masculino , Neoplasias Cutâneas/prevenção & controle , Adulto , Estudos Prospectivos , Pessoa de Meia-Idade , Protetores Solares/administração & dosagem , Inquéritos e Questionários/estatística & dados numéricos , Adulto Jovem , Idoso , Queimadura Solar/prevenção & controle , Fatores de Risco , Luz Solar/efeitos adversos
3.
BMJ Case Rep ; 17(5)2024 May 09.
Artigo em Inglês | MEDLINE | ID: mdl-38724216

RESUMO

A man in his 50s was diagnosed with solar urticaria following monochromated light testing that demonstrated exquisite photosensivity to ultraviolet (UV) A, UV B (UVB) and visible light.Treatment options for this photodermatosis are limited; UVB phototherapy is one modality that can be appropriate in some patients. This is administered at very low doses in a controlled environment to induce skin hardening.1 To self-treat his condition, the patient used a commercial sunbed on two occasions several days apart. He noted an immediate flare of solar urticaria after first use with associated dizziness. Following the second use, he felt generally unwell and was witnessed to lose consciousness and displayed jerky movements of his limbs while a passenger in a car. Investigations including a head MRI and an EEG were normal; an anoxic seizure caused by a flare of solar urticaria was later confirmed.Solar urticaria is a rare photodermatosis that is poorly understood and difficult to treat. The condition has a significant impact on the quality of life of patients. Severe cases can be associated with systemic symptoms that could be life-threatening.


Assuntos
Transtornos de Fotossensibilidade , Luz Solar , Raios Ultravioleta , Urticária , Humanos , Masculino , Urticária/etiologia , Pessoa de Meia-Idade , Raios Ultravioleta/efeitos adversos , Transtornos de Fotossensibilidade/etiologia , Luz Solar/efeitos adversos , Terapia Ultravioleta/métodos , Terapia Ultravioleta/efeitos adversos , Urticária Solar
4.
Medicine (Baltimore) ; 103(18): e37991, 2024 May 03.
Artigo em Inglês | MEDLINE | ID: mdl-38701321

RESUMO

Several observational studies have found that exposure to sunlight reduces the risk of colorectal cancer (CRC). However, sun exposure remains ambiguous in its relationship to CRC. We carried out a Mendelian randomization (MR) study to explore the potential associations between them. We examined the exposure to sunlight summary statistics of the UK Biobank Consortium using a 2-sample MR analysis. Using data from the FinnGen consortium, we derived summary statistics for CRC. We conducted our analysis with various methods, incorporating inverse variance weighted (IVW) along with 4 other approaches. A Cochran Q statistic was used to measure the heterogeneity of instrumental variables (IVs). We screened 133 single nucleotide polymorphisms (SNPs) (time spent outdoors in summer), 41 SNPs (time spent outdoors in winter), and 35 SNPs (frequency of solarium/sunlamp use) representing sunlight exposure for MR analysis. All selected SNPs had an F-statistic >20, indicating that IVs did not weakly bias the results. The summer outdoor activity trait exhibited significant heterogeneity (Cochran Q statistic = 183.795, P = .002 < 0.05), but we found no horizontal polymorphisms or significant heterogeneity for the other exposure traits. According to IVW estimates, no causal association exists between time spent outdoors in summer and CRC (Odds Ratio, OR = 0.735, 95% confidence interval, CI = 0.494-1.017, P = .128 > 0.017). No causal relationship existed between time spent outdoors in winter and CRC, as indicated by Bonferroni-corrected adjusted p-values. The OR was 0.877 with a 95% CI of 0.334-2.299, and the P value was .789, more significant than the significance threshold of 0.017. The solarium/sunlamp use frequency was not associated with CRC (OR = 1.567, 95%CI = 0.243-10.119, P = .637 > .017). Also, an IVW with random effects was applied to determine the causal relationship between summer outdoor time and CRC. No causal association between summer outdoor time and CRC was found (OR = 0.735, 95% CI = 0.494-1.017, P = .128 > .017). Additionally, 4 additional analyses yielded similar results. The findings of our study suggest that exposure to sunlight may reduce CRC risk, but the causal relationship remains unsolved. There is no evidence to suggest that exposure to sunlight prevents CRC. Randomized, controlled trials are needed to determine whether sunlight exposure protects against CRC.


Assuntos
Neoplasias Colorretais , Análise da Randomização Mendeliana , Polimorfismo de Nucleotídeo Único , Luz Solar , Humanos , Luz Solar/efeitos adversos , Neoplasias Colorretais/genética , Neoplasias Colorretais/epidemiologia , Neoplasias Colorretais/etiologia , Estações do Ano , Fatores de Risco
6.
Am J Dermatopathol ; 46(6): 358-364, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38513120

RESUMO

ABSTRACT: Histologic differentiation between melanoma in situ in chronically sun-damaged skin (CSDS) [lentigo maligna (LM)] and CSDS without malignancy is difficult because signs of melanocyte activation and proliferation are found in both. A potentially reliable and quantifiable criterion is melanocyte density (MD). Here, we evaluated whether and to what extent MD allows the distinction between LM and CSDS, which is particularly relevant for the evaluation of borderline cases and surgical margins.Articles assessing MD in LM and/or CSDS were evaluated in a systematic review. The results were categorized and compared according to staining. Cutoff values were included whenever stated.Twenty articles matched the selection criteria. Six hundred forty-four samples of CSDS and 227 samples of LM were considered. In each individual study, mean MD scores were higher for LM than for CSDS. However, looking at the overall study situation, it becomes clear that the data are very heterogeneous and show overlaps. Therefore, no reliable orientation value can be derived. Only 1 article defined a cutoff value.The data of MD in LM in contrast to CSDS were sparse, and a defined cutoff value was only mentioned in 1 article for microphthalmia-associated transcription factor, which cannot yet be generalized. Especially regarding the importance for the definition of surgical resection margins, this unsatisfactory data set highlights the need for further studies. More precise diagnostic criteria could spare some patients extensive and possibly disfiguring surgery.


Assuntos
Melanócitos , Melanoma , Neoplasias Cutâneas , Humanos , Neoplasias Cutâneas/patologia , Neoplasias Cutâneas/diagnóstico , Melanócitos/patologia , Melanoma/patologia , Melanoma/diagnóstico , Contagem de Células , Sarda Melanótica de Hutchinson/patologia , Sarda Melanótica de Hutchinson/diagnóstico , Luz Solar/efeitos adversos , Diagnóstico Diferencial
7.
J Dtsch Dermatol Ges ; 22(5): 665-673, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38528320

RESUMO

BACKGROUND AND OBJECTIVES: Outdoor workers are at increased risk of developing non-melanoma skin cancer. We aimed to address the lack of validated German-language measurement instruments for outdoor workers' sun safety behavior and knowledge by compiling and validating two questionnaires. PARTICIPANTS AND METHODS: By expert consensus, items for the assessment of protective behavior (OccuSun) were compiled based on existing instruments. For knowledge, a translation of the Skin Cancer and Sun Knowledge (SCSK) scale was selected. After a pre-test, a validation study including 68 outdoor workers (62% female) was conducted in 2020. RESULTS: The retest reliability was r = 0.93 (95% confidence interval: 0.86-0.96) for the protection score and rs = 0.78 (0.67-0.86) for the knowledge score. Protective behaviors were correlated with respective diary data (0.38 ≤ rs ≤ 0.74, p < 0.001) and skin pigmentation changes (-0.23 ≥ rs ≥ -0.42, 0.007 ≤ p ≤ 0.165) but not with self-reported sunburn frequency (0.21 ≥ rs ≥ -0.04). CONCLUSIONS: Among German outdoor workers, two questionnaires for the assessment of sun protection behavior (OccuSun) and knowledge (SCSK) demonstrated good reliability. The OccuSun had generally good validity. Both instruments are fit for subsequent validation to determine their sensitivity to change.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Neoplasias Cutâneas , Queimadura Solar , Protetores Solares , Humanos , Feminino , Inquéritos e Questionários , Masculino , Reprodutibilidade dos Testes , Neoplasias Cutâneas/prevenção & controle , Adulto , Queimadura Solar/prevenção & controle , Protetores Solares/uso terapêutico , Comportamentos Relacionados com a Saúde , Alemanha , Pessoa de Meia-Idade , Luz Solar/efeitos adversos , Exposição Ocupacional/prevenção & controle
8.
JAMA Intern Med ; 184(5): 575-577, 2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-38526467

RESUMO

This case-control study describes the incidence of fatal traffic crashes in the US during the 2017 total solar eclipse.


Assuntos
Acidentes de Trânsito , Humanos , Estados Unidos/epidemiologia , Acidentes de Trânsito/prevenção & controle , Luz Solar/efeitos adversos , Masculino
9.
Aust N Z J Public Health ; 48(1): 100117, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38350754

RESUMO

OBJECTIVE: To describe the development of a new position statement regarding balancing the risks and benefits of sun exposure for Australian adults. METHODS: We conducted a Sun Exposure Summit in March 2021, with presentations from invited experts and a workshop including representation from academic, clinical, policy, and patient stakeholder organisations. The group considered advice about balancing the risks and benefits of sun exposure for Australian adults and developed a revised consensus position statement. RESULTS: The balance of risks and benefits of sun exposure is not the same for everybody. For people at very high risk of skin cancer, the risks of exposure likely outweigh the benefits; sun protection is essential. Conversely, people with deeply pigmented skin are at low risk of skin cancer but at high risk of vitamin D deficiency; routine sun protection is not recommended. For those at intermediate risk of skin cancer, sun protection remains a priority, but individuals may obtain sufficient sun exposure to maintain adequate vitamin D status. CONCLUSIONS: The new position statement provides sun exposure advice that explicitly recognises the differing needs of Australia's diverse population. IMPLICATIONS FOR PUBLIC HEALTH: Mass communication campaigns should retain the focus on skin cancer prevention. The new position statement will support the delivery of personalised advice.


Assuntos
Neoplasias Cutâneas , Deficiência de Vitamina D , Adulto , Humanos , Luz Solar/efeitos adversos , Austrália , Vitamina D/uso terapêutico , Deficiência de Vitamina D/prevenção & controle , Deficiência de Vitamina D/tratamento farmacológico , Deficiência de Vitamina D/epidemiologia , Neoplasias Cutâneas/etiologia , Neoplasias Cutâneas/prevenção & controle , Medição de Risco
10.
Photodermatol Photoimmunol Photomed ; 40(2): e12955, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38361492

RESUMO

BACKGROUND: A few patients report intense pain and other unpleasant sensations, such as burning, dysesthesia and hyperalgesia, after even brief exposure to the sun and in the absence of any skin lesion. Sometimes they also develop systemic symptoms, such as mild fever, fatigue, faintness and fainting. As a result, these patients carefully avoid even short-term sun exposure with a consequent severe negative impact on their lives. METHODS: We have reviewed the clinical findings and the results of photobiological investigations of 10 patients who presented this clinical picture. Six of these patients were previously described by our group with the diagnosis of sun pain. We have reviewed the similarities with other previously described disorders such as solar dysesthesia and PUVA pain and have evaluated possible pathogenetic mechanisms. RESULTS: During phototesting our patients experienced intense pain in the exposed area and in the surrounding skin, without any visible lesion, even with very low sub-erythemal doses. At follow-up, five patients were diagnosed with fibromyalgia, three with a major depressive disorder, one with bipolar syndrome and one with a conversion disorder. The pathogenesis remains unclear, but the use of a psychopharmacological treatment with antidepressants improved both the neuropsychiatric symptoms and sensitivity to the sun in most subjects. CONCLUSION: For patients with pain and other severe symptoms in the absence of skin lesions and clinical and laboratory manifestations of known photodermatoses, a neuropsychiatric evaluation should be suggested.


Assuntos
Transtorno Depressivo Maior , Transtornos de Fotossensibilidade , Humanos , Parestesia/diagnóstico , Parestesia/etiologia , Luz Solar/efeitos adversos , Transtornos de Fotossensibilidade/diagnóstico , Transtornos de Fotossensibilidade/etiologia , Dor/etiologia
11.
Prev Med ; 181: 107919, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38408648

RESUMO

OBJECTIVE: To examine associations between sun protection behaviors and physical activity (PA) by rural and urban residence in the United States. METHODS: We analyzed data from the National Health and Nutrition Examination Survey (2013-2018), restricting to participants ages 20-59 with sun behavior data. Sunburns, sun exposure, and sun protection measures were dichotomized (yes/no): ≥1 sunburn in the past year, 2+ hour outside during workdays or non-workdays, and never/rarely/sometimes using sunscreen, wearing long sleeves, and staying in the shade. Meeting PA recommendations (yes/no) was defined as ≥150 min of vigorous/moderate or ≥ 75 min vigorous PA per week. Associations between sun behaviors and PA were analyzed using logistic regression models, which accounted for survey-weights and potential confounders, and stratified by rural-urban status. RESULTS: Rural and urban individuals meeting PA recommendations had greater odds of spending 2+ hour outside during workdays (OR: 2.26 [1.88, 2.74] and 3.95 [2.72, 5.73]) and non-workdays (OR: 2.06 [1.78, 2.38] and 3.33 [2.47, 4.46]). Among urban residents, odds of staying in the shade were lower among those who met PA recommendations (OR: 0.78 [0.66, 0.92]). We did not observe differences in sunburns or other sun behaviors by PA status, regardless of rurality. CONCLUSIONS: Meeting PA recommendations was associated with greater sun exposure in both rural and urban populations. Additional exercise location (indoors/outside) data is needed to inform PA and skin cancer prevention interventions to reduce unintended increases in sun exposure and reductions in PA, respectively, especially among rural populations.


Assuntos
Neoplasias Cutâneas , Queimadura Solar , Humanos , Estados Unidos , Queimadura Solar/prevenção & controle , Inquéritos Nutricionais , População Rural , Protetores Solares/uso terapêutico , Exercício Físico , Comportamentos Relacionados com a Saúde , Luz Solar/efeitos adversos , Neoplasias Cutâneas/prevenção & controle
12.
Int J Mol Sci ; 25(3)2024 Feb 05.
Artigo em Inglês | MEDLINE | ID: mdl-38339182

RESUMO

Light and atmospheric pollution are both independently implicated in cancer induction and premature aging. Evidence has been growing more recently on the toxic synergy between light and pollutants. Polycyclic aromatic hydrocarbons (PAHs) originate from the incomplete combustion of organic matter. Some PAHs, such as the Benzo[a]pyrene (BaP), absorb ultraviolet A (UVA) wavelengths and can act as exogenous chromophores, leading to synergistic toxicity through DNA damage and cytotoxicity concomitant to ROS formation. In this study, we shed light on the mechanism underlying the toxic synergy between PAHs and UVA. Using dermal fibroblasts co-exposed to UVA and BaP, we have demonstrated that the photosensitization reaction causes mortality, which is most likely caused by ROS accumulation. We have shown that these ROS are concentrated in the lipids, which causes an important induction of lipid peroxidation and malondialdehyde, by-products of lipid peroxidation. We have also shown the accumulation of bulky DNA damage, most likely generated by these by-products of lipid peroxidation. To our knowledge, this study represents the first one depicting the molecular effects of photo-pollution on dermal skin.


Assuntos
Hidrocarbonetos Policíclicos Aromáticos , Peroxidação de Lipídeos , Hidrocarbonetos Policíclicos Aromáticos/toxicidade , Espécies Reativas de Oxigênio , Raios Ultravioleta , Luz Solar/efeitos adversos , Benzo(a)pireno , Fibroblastos
13.
Br J Cancer ; 130(9): 1441-1452, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38424165

RESUMO

BACKGROUND: Acute lymphocytic leukaemia (ALL) and non-Hodgkin lymphoma (NHL) are among the commonest types of childhood cancer. Some previous studies suggested that elevated ultraviolet radiation (UVR) exposures increase ALL risk; many more indicate NHL risk is reduced. METHODS: We assessed age<20 ALL/NHL incidence in Surveillance, Epidemiology and End Results data using AVGLO-derived UVR irradiance/cumulative radiant exposure measures, using quasi-likelihood models accounting for underdispersion, adjusted for age, sex, racial/ethnic group and other county-level socioeconomic variables. RESULTS: There were 30,349 cases of ALL and 8062 of NHL, with significant increasing trends of ALL with UVR irradiance (relative risk (RR) = 1.200/mW/cm2 (95% CI 1.060, 1.359, p = 0.0040)), but significant decreasing trends for NHL (RR = 0.646/mW/cm2 (95% CI 0.512, 0.816, p = 0.0002)). There was a borderline-significant increasing trend of ALL with UVR cumulative radiant exposure (RR = 1.444/MJ/cm2 (95% CI 0.949, 2.197, p = 0.0865)), and significant decreasing trends for NHL (RR = 0.284/MJ/cm2 (95% CI 0.166, 0.485, p < 0.0001)). ALL and NHL trend RR is substantially increased among those aged 0-3. All-age trend RRs are most extreme (increasing for ALL, decreasing for NHL) for Hispanics for both UVR measures. CONCLUSIONS: Our more novel finding, of excess UVR-related ALL risk, is consistent with some previous studies, but is not clear-cut, and in need of replication.


Assuntos
Linfoma não Hodgkin , Leucemia-Linfoma Linfoblástico de Células Precursoras , Raios Ultravioleta , Humanos , Feminino , Criança , Masculino , Linfoma não Hodgkin/epidemiologia , Linfoma não Hodgkin/etiologia , Pré-Escolar , Raios Ultravioleta/efeitos adversos , Adolescente , Incidência , Estados Unidos/epidemiologia , Lactente , Leucemia-Linfoma Linfoblástico de Células Precursoras/epidemiologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/etiologia , Programa de SEER , Luz Solar/efeitos adversos , Adulto Jovem , Recém-Nascido , Neoplasias Induzidas por Radiação/epidemiologia , Neoplasias Induzidas por Radiação/etiologia , Exposição à Radiação/efeitos adversos , Fatores de Risco
14.
Photodermatol Photoimmunol Photomed ; 40(1): e12942, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38288771

RESUMO

BACKGROUND: Standardized methods for sun protection factor (SPF) testing are still beset with endpoint and method-driven issues, and can be influenced by multiple factors. The purpose of this analysis is to explore the factors influencing the results of sun protection factor (SPF) testing in human subjects according to the ISO 24444:2019 standard. Intrinsic factors, such as baseline skin color, age and gender, the minimal erythemal dose on an unprotected area (MEDu), as well as environmental factors such as season/weather influences, are considered for analysis. METHODS: Datasets generated for two reference products (P2 and P8) during the conduct of 50 such studies using the ISO standard 24444:2019 for the testing of SPF products, from a single testing center located in Bucharest, Romania between April 2021 and December 2022, were retrieved and compiled. Overall, the data for 334 subjects was available, with 276 observations for the reference P8, and 171 for P2. RESULTS: No effects due to gender or age were detected. Seasonal changes, the individual typology angle (ITA°) and MEDu were found to have an influence on the outcome of the SPF values. CONCLUSIONS: This study adds new original data about the impact of intrinsic and extrinsic factors on SPF variations pertaining to ISO reference sunscreen P8 (SPF 50+). The findings suggest that some factors will inevitably impact the results between two SPF experiments for the same product and SPF testing laboratory. The interconnections between the sources of this variation are discussed. The findings of this research help to identify and characterize factors that contribute to SPF testing variability.


Assuntos
Fator de Proteção Solar , Protetores Solares , Humanos , Luz Solar/efeitos adversos , Raios Ultravioleta/efeitos adversos , Tempo (Meteorologia)
15.
Exp Dermatol ; 33(1): e15008, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38284197

RESUMO

Skin is the ultimate barrier between body and environment and prevents water loss and penetration of pathogens and toxins. Internal and external stressors, such as ultraviolet radiation (UVR), can damage skin integrity and lead to disorders. Therefore, skin health and skin ageing are important concerns and increased research from cosmetic and pharmaceutical sectors aims to improve skin conditions and provide new anti-ageing treatments. Biomolecules, compared to low molecular weight drugs and cosmetic ingredients, can offer high levels of specificity. Topically applied enzymes have been investigated to treat the adverse effects of sunlight, pollution and other external agents. Enzymes, with a diverse range of targets, present potential for dermatological use such as antioxidant enzymes, proteases and repairing enzymes. In this review, we discuss enzymes for dermatological applications and the challenges associated in this growing field.


Assuntos
Cosméticos , Dermatopatias , Humanos , Raios Ultravioleta/efeitos adversos , Pele , Dermatopatias/terapia , Luz Solar/efeitos adversos , Cosméticos/farmacologia
16.
Sci Rep ; 14(1): 1097, 2024 01 11.
Artigo em Inglês | MEDLINE | ID: mdl-38212604

RESUMO

Outdoor exposure is considered the primary modifiable risk factor in preventing the development of myopia. This effect is thought to be attributed to the light-induced synthesis and release of dopamine in the retina. However, until recent years, there was no objective quantifiable method available to measure the association between time spent outdoors and myopia. It is only recently that the conjunctival ultraviolet autofluorescence (CUVAF) area, serving as a biomarker for sun exposure, has begun to be utilized in numerous studies. To provide a comprehensive summary of the relevant evidence pertaining to the association between the CUVAF area and myopia across different geographic regions and age groups, a systematic review and meta-analysis were conducted. The search encompassed multiple databases, including MEDLINE, SCIENCE DIRECT, GOOGLE SCHOLAR, WEB OF SCIENCE, and SCOPUS, and utilized specific search terms such as "conjunctival ultraviolet autofluorescence", "CUVAF", "UVAF", "objective marker of ocular sun exposure", "myopia", "degenerative myopia", and "high myopia". The bibliographic research included papers published between the years 2006 and 2022. A total of 4051 records were initially identified, and after duplicates were removed, 49 articles underwent full-text review. Nine articles were included in the systematic review. These studies covered myopia and outdoor exposure across different regions (Australia, Europe and India) with a total population of 3615 individuals. They found that myopes generally had smaller CUVAF areas compared to non-myopes. The meta-analysis confirmed this, revealing statistically smaller CUVAF areas in myopic patients, with a mean difference of - 3.30 mm2 (95% CI - 5.53; - 1.06). Additionally, some studies showed a positive correlation between more outdoor exposure and larger CUVAF areas. In terms of outdoor exposure time, myopic patients reported less time outdoors than non-myopic individuals, with a mean difference of - 3.38 h/week (95% CI - 4.66; - 2.09). Overall, these findings highlight the connection between outdoor exposure, CUVAF area and myopia, with regional variations playing a significant role. The results of this meta-analysis validate CUVAF as a quantitative method to objectively measure outdoor exposure in relation with myopia development.


Assuntos
Miopia , Raios Ultravioleta , Humanos , Raios Ultravioleta/efeitos adversos , Luz Solar/efeitos adversos , Exposição Ambiental/efeitos adversos , Estudos Transversais , Túnica Conjuntiva , Miopia/epidemiologia , Biomarcadores
18.
Actas Dermosifiliogr ; 115(3): T288-T292, 2024 Mar.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-38219907

RESUMO

Few reports describing an association between UV radiation and fixed skin eruptions have been published since 1975. These reactions have received various names, including fixed sunlight eruption, fixed exanthema due to UV radiation, and broad-spectrum abnormal localized photosensitivity syndrome. We present a series of 13 patients (4 men [30.8%] and 9 women [69.2%]) aged between 28 and 56 years who were evaluated for fixed eruptions induced by UV radiation at a dermatology referral hospital in Bogotá, Colombia. The lesions were located on the inner thighs, buttocks, popliteal region, anterior and posterior axilla, and dorsum of the feet. Photoprovocation reproduced lesions in all the affected areas, and histopathology showed changes similar to those seen in fixed drug eruptions. While these UV-provoked reactions may be a type of fixed skin eruption, we cannot rule out that they may also be a distinct condition that simply shares a pathogenic mechanism with fixed eruptions.


Assuntos
Exantema , Transtornos de Fotossensibilidade , Masculino , Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Colômbia , Luz Solar/efeitos adversos , Transtornos de Fotossensibilidade/etiologia , Transtornos de Fotossensibilidade/patologia , Raios Ultravioleta/efeitos adversos , Exantema/etiologia
19.
Cancer Epidemiol Biomarkers Prev ; 33(4): 608-615, 2024 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-38227023

RESUMO

BACKGROUND: Evidence regarding whether rural residence is a risk factor for skin cancer is mixed. We compared sun exposure and protection behaviors between rural and urban residents by ethno-racial group in the United States. METHODS: We analyzed data from three (2013-2018) National Health and Nutrition Examination Survey cycles. We compared self-reported sun exposure and protection measures (sunburn, time spent outside, sunscreen use, wearing long sleeves, staying in shade) by rural-urban residential status using survey-weighted logistic regression models stratified by ethno-racial group, adjusting for age, sex, income, education, body mass index, and smoking. RESULTS: Hispanic rural versus urban residents more often reported sunburns in the past year [41.6% vs. 31.2%, adjusted OR (aOR): 1.46 (1.15-1.86)]. White rural versus urban residents more often spent 2+ hours outside on workdays [42.9% vs. 29.1%, aOR: 1.60 (1.27-2.01)] and non-workdays [72.2% vs. 64.8%, aOR: 1.45 (1.12-1.88)] and less often used sunscreen [26.0% vs. 35.1%, aOR: 0.74 (0.59-0.93)] and stayed in the shade [21.7% vs. 26.7%, aOR: 0.72 (0.57-0.89)]. Black rural versus urban residents stayed in the shade less often [31.6% vs. 43.9%, aOR: 0.60 (0.39-0.91)] but less often spent 2+ hours outside on non-workdays [47.6% vs. 56.8%, aOR: 0.67 (0.51-0.90)]. CONCLUSIONS: Across all ethno-racial groups included, rural residents reported greater sun risk behaviors than urban residents, with some nuances by ethno-racial identity, suggesting rural residence is a potential risk factor for skin cancer. IMPACT: Sun protection promotion programs should consider rural-urban settings while also accounting for ethno-racial identities.


Assuntos
Neoplasias Cutâneas , Queimadura Solar , Humanos , Estados Unidos/epidemiologia , Protetores Solares/uso terapêutico , Comportamentos Relacionados com a Saúde , Inquéritos Nutricionais , População Rural , Queimadura Solar/prevenção & controle , Neoplasias Cutâneas/epidemiologia , Neoplasias Cutâneas/prevenção & controle , Luz Solar/efeitos adversos
20.
J Cosmet Dermatol ; 23(5): 1771-1776, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38164125

RESUMO

BACKGROUND: Sunken upper eyelids, characterized by hollowing in the upper orbital region, can contribute to an aged or fatigued appearance. We aim to report on the surgical technique and its effects, involving the release of the arcus marginalis of the upper eyelid and the precise distribution of orbital fat. METHODS: From December 2021 to March 2023, a total of 84 eyelids from 42 patients who underwent surgical correction for sunken upper eyelids, utilizing the upper arcus marginalis release and precision fat distribution technique, were included in this study. Preoperative and postoperative sunken depths were measured and statistically analyzed. Aesthetic satisfaction was assessed through patient questionnaires. RESULTS: Preoperative and postoperative sunken depths measured 9.2 ± 2.2 mm and 5.9 ± 2.3 mm, respectively. The mean improvement was 3.3 mm, a change of statistical significance. Aesthetic outcomes and patient satisfaction yielded favorable results. No major complications were observed during the follow-up period. CONCLUSION: The upper arcus marginalis release and orbital fat distribution technique demonstrated favorable outcomes in correcting sunken upper eyelids. This procedure ensures stable placement of orbital fat at the deepest sunken point, resulting in aesthetically pleasing and enduring results. This technique serves as a valuable alternative for patients with moderate to severe sunken eyelids.


Assuntos
Blefaroplastia , Estética , Pálpebras , Satisfação do Paciente , Humanos , Feminino , Pálpebras/cirurgia , Pessoa de Meia-Idade , Blefaroplastia/métodos , Masculino , Adulto , Tecido Adiposo , Idoso , Resultado do Tratamento , Envelhecimento da Pele , Luz Solar/efeitos adversos
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