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1.
Arq. bras. med. vet. zootec. (Online) ; 71(6): 2057-2064, Nov.-Dec. 2019. tab, graf
Artigo em Português | LILACS, VETINDEX | ID: biblio-1055114

RESUMO

Objetivou-se avaliar o perfilhamento da Brachiaria brizantha cv. Piatã, como base para identificação das frequências e alturas pós-corte mais adequadas para essa gramínea forrageira. Em um esquema fatorial 2 x 2, foram estudadas combinações entre duas frequências de corte (95% e máxima interceptação de luz, ILmax) e duas alturas pós-corte (15 e 20cm). O delineamento foi em blocos ao acaso, com três repetições, totalizando 12 unidades experimentais de 14m2 cada. Foram avaliadas as taxas de aparecimento (TApP) e de mortalidade (TMoP) de perfilhos, o índice de estabilidade (IE) e a densidade populacional de perfilhos. A maior TApP no dossel sob IL de 95% ocorreu no Verão 1, em comparação às demais épocas. Nos dosséis manejados com ILmax, a TApP foi superior no Verão 1 e no Outono, quando comparados às outras épocas. No Verão 1 e no Final da Primavera e Verão 2, houve as maiores TMoP para as duas frequências de corte avaliadas. No Outono, a TMoP também foi alta no dossel cortado com ILmáx. O IE foi menor durante o Verão 1 no dossel sob ILmax e com 15cm de resíduo (0,995). Porém, nas demais épocas, os valores de índice de estabilidade foram maiores que uma unidade e não foram influenciados pela frequência e altura pós-corte. A densidade populacional de perfilhos foi menor no Verão 1, em comparação às demais épocas. O capim-piatã pode ser desfolhado com qualquer combinação entre as interceptações de luz, 95% e ILmax, e alturas pós-corte, 15 ou 20cm, sem prejudicar a persistência do pasto.(AU)


The aim of this study was to evaluate the tillering of Brachiaria brizantha cv. Piatã, as a basis for identifying the frequencies and post-cutting heights most suitable for this grass. In a 2 x 2 factorial scheme, combinations between two cut frequencies (95% and maximum light interception, IL max ) and two post-cut heights (15 and 20cm) were studied. The experimental design was in randomized blocks with 3 replicates, totaling 12 experimental units of 14m 2 each. Rates of appearance (TAR) and mortality (TMR) of tillers, the stability index and the population density of tillers were evaluated. The highest TAR in the canopy under 95% IL occurred in Summer 1, in comparison to the other seasons. In the canopies managed with IL max , TAR was higher in summer 1 and in autumn, when compared to other seasons. In summer 1 and at the end of spring and summer 2, there were the highest TMR for the two cutoff frequencies evaluated. In autumn, TMR was also high in the canopy cut with IL max . IE was lower during summer 1 in the canopy under IL max and 15cm of residue (0.995). However, at other times, stability index values were greater than one unit and were not influenced by post-cut frequency and height. The population density of tillers was lower in Summer 1, when compared to the other seasons. The piata grass may be defoliated with any combination of light intercepts, 95% and ILmax, and post-cut heights, 15 or 20cm, without impairing the persistence of pasture.(AU)


Assuntos
Luz Solar , Fenômenos Fisiológicos Vegetais , Brachiaria/crescimento & desenvolvimento
2.
Mem. Inst. Invest. Cienc. Salud (Impr.) ; 17(2): 36-43, ago. 2019. tab, ilus
Artigo em Espanhol | LILACS, BDNPAR | ID: biblio-1008411

RESUMO

La vitamina D es una hormona cumple una función en la regulación de numerosos genes que participan en la proliferación y maduración celular. El objetivo de este trabajo fue determinar la prevalencia de valores inadecuados de esta vitamina en jóvenes sanos de Asunción e identificar los posibles factores de riesgo asociados. Estudio observacional descriptivo basado en datos clínico-epidemiológicos y en la determinación de la 25-hidroxivitamina D (25-OH vitamina D) por el método de quimioluminiscencia (CMIA). Se consideró valor adecuado ≥30 ng/dl, inadecuado por debajo de este rango y deficiente ≤20 ng/dl. El análisis estadístico se realizó con el programa R-proyect. Para establecer factores de riesgo para tener deficiencia de vitamina D se utilizó regresión logística bi y multivariante. Se incluyeron 817 jóvenes universitarios de edad promedio 21 años. La concentración de vitamina D tuvo una media de 25 ± 8 ng/dl, oscilando entre 64,3 y 2,4 ng/dl. El 75,5% de los participantes tenían valores inadecuados de vitamina D. La deficiencia de vitamina D fue significativamente (p = 0,006) más frecuente en mujeres, personas con sobrepeso (p = 0,03), con falta de exposición al sol (p = 0,001) y con sedentarismo (p = 0,0001). Este estudio confirma la elevada prevalencia de valores inadecuados de vitamina D en nuestro país y permite definir un perfil de muy alto riesgo para las jóvenes sedentarias y con sobrepeso, lo que justifica una atención especial de parte de los médicos y las instituciones responsables de la salud pública en nuestro país(AU)


Vitamin D is a hormone that plays a role in the regulation of numerous genes involved in cell proliferation and maturation. The objective of this work was to determine the prevalence of inadequate values of this vitamin in healthy young people of the city of Asunción and to identify the possible risk factors associated with it. Descriptive observational study based on clinical-epidemiological data and in the determination of 25-hydroxyvitamin D (25-OH vitamin D) by the chemiluminescence method (CMIA). It was considered appropriate values ≥30 ng/dl, inappropriate below this range and deficient <20 ng/dl. Statistical analyzes were carried out with the R-project program. To establish the association, bivariate and multivariate logistic regression was used. We included 817 university students with an average age of 21 years. The average value of the vitamin D concentration was 25 ± 8 ng/dl, ranging from 64.3 to 2.4 ng/dl. Inadequate vitamin D values were found in 75.5% of the participants. Vitamin D deficiency was significantly (p <0.006) more frequent in women, overweight people (p <0.03), lack of sun exposure (p = 0.001) and sedentary lifestyle (p = 0.0001). This study confirms the high prevalence of inadequate vitamin D values in our country and allows us to define a very high risk profile for sedentary and overweight young women, which justifies special attention from physicians and institutions responsible for public health in our country(AU)


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Vitamina D/sangue , Deficiência de Vitamina D/epidemiologia , Luz Solar , Pesos e Medidas Corporais , Índice de Massa Corporal , Prevalência , Estudos Transversais , Fatores de Risco , Ingestão de Alimentos
3.
An. bras. dermatol ; 94(3): 279-286, May-June 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1011121

RESUMO

Abstract: Background: Exposure to UVR provides benefits related to vitamin D synthesis, but also causes harms, since UVB is considered a complete carcinogen. There is no definition of the level of sun exposure and the proportion of exposed body required for proper synthesis of vitamin D in the skin without causing it damage. Objectives: This study aims to analyze the sun exposure index, vitamin D levels and clinical changes in the skin caused by constant sun exposure in the fishermen population. Methods: It is a cross-sectional, observational and analytical study. The sample consisted of fishermen and was calculated in 174 individuals. The questionnaire was applied, the dermatological examination was carried out and the examinations of calcidiol, parathyroid hormone, calcium and phosphorus were requested. Data were expressed as percentages. The comparative analysis was done through the Chi-square test, and the correlations were established through the Pearson's linear coefficient. Results: We observed that there was vitamin D deficiency in a small part of the cases (11.46%), and the frequency of diagnosis of skin cancer was 2.7% of the cases surveyed. Study Limitations: The difficulty in categorizing the sun exposure index. Conclusion: The fact that fishermen expose themselves to the sun chronically and have been exposed to the sun for more than 15 years, between 21 and 28 hours a week, and without photoprotection, were indicative factors for protection against vitamin D deficiency. Chronic exposure to sun and high vitamin levels D may be indicative of protection of this population against skin cancer.


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Neoplasias Cutâneas/etiologia , Neoplasias Cutâneas/epidemiologia , Luz Solar , Raios Ultravioleta , Vitamina D/biossíntese , Deficiência de Vitamina D/reabilitação , Deficiência de Vitamina D/epidemiologia , Vitamina D/sangue , Brasil/epidemiologia , Índice de Massa Corporal , Estado Nutricional , Estudos Transversais , Inquéritos e Questionários , Dieta
4.
An. bras. dermatol ; 94(3): 331-333, May-June 2019. graf
Artigo em Inglês | LILACS | ID: biblio-1011115

RESUMO

Abstract: Solar urticaria is a rare form of physical urticaria mediated by immunoglobulin E. The lesions appear immediately after the sun exposure, interfering with the patient's normal daily life. Omalizumab, a monoclonal anti-IgE antibody, has been recently approved for the treatment of chronic spontaneous urticaria, and the latest reports support its role also in the treatment of solar urticaria. Hereby, we report a case of solar urticaria refractory to conventional treatment strategies, with an excellent response to treatment with omalizumab and phototesting normalization.


Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Luz Solar/efeitos adversos , Urticária/tratamento farmacológico , Antialérgicos/uso terapêutico , Omalizumab/uso terapêutico , Transtornos de Fotossensibilidade/diagnóstico , Transtornos de Fotossensibilidade/etiologia , Transtornos de Fotossensibilidade/tratamento farmacológico , Urticária/diagnóstico , Urticária/etiologia
5.
An. bras. dermatol ; 94(2): 157-163, Mar.-Apr. 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1001134

RESUMO

Abstract BACKGROUND: Skin cancer is common in Brazil and is related to sun exposure, among other risk factors. There are no data on the incidence of malignant skin neoplasm in rural workers in western Paraná. OBJECTIVE: To analyze the incidence and profile of rural workers who were diagnosed with skin cancer at a reference service in Cascavel, western Paraná, in the last five years (2011-2016). METHODS: This retrospective cross-sectional study was carried out through a review of the anatomopathological reports of rural workers diagnosed with skin cancer at Cascavel Oncology Center (CEONC), in Cascavel. The following variables were collected: year of diagnosis, age, gender, injury location and histological subtype. RESULTS: A total of 681 cases of malignant epithelial neoplasia were identified, with a higher frequency in the 61-70 age group. Data analysis showed an increase of about 210% in the occurrence of skin cancers in the last 5 years. The cephalic region was the most affected, and the most common histological subtype was nodular basal cell carcinoma. There was no association between gender and location. STUDY LIMITATIONS: This is a retrospective study and analysis of a secondary data bank. CONCLUSION: This study is a regional estimation of the incidence of cutaneous neoplasms and provides evidence of a considerable increase in the number of diagnoses in rural workers from western Paraná, Brazil. Moreover, it is possible to conclude that the sample group studied is at risk of developing skin cancer.


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Neoplasias Cutâneas/epidemiologia , Carcinoma Basocelular/epidemiologia , Carcinoma de Células Escamosas/epidemiologia , Melanoma/epidemiologia , População Rural/estatística & dados numéricos , Neoplasias Cutâneas/etiologia , Luz Solar/efeitos adversos , Brasil/etnologia , Brasil/epidemiologia , Carcinoma Basocelular/etiologia , Carcinoma de Células Escamosas/etiologia , Incidência , Estudos Transversais , Estudos Retrospectivos , Distribuição por Idade , Face , Melanoma/etiologia
6.
An. bras. dermatol ; 94(2): 172-181, Mar.-Apr. 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1001149

RESUMO

Abstract BACKGROUND: Excessive sun exposure is the major risk factor for skin cancer. Thus, sun exposure behavior is the major focus for prevention of this disease, since it is potentially modifiable. Increasing the knowledge on sun related habits and other skin cancer risk factors is fundamental in the development of preventive programs, especially when directed to young people. OBJECTIVES: To assess the photoprotection habits and the knowledge about skin cancer in college students. METHODS: We conducted a cross-sectional study from Oct. 16 to Feb. 17, including 371 students from the Federal University of Santa Maria, RS, Brazil, through a self-administered questionnaire. RESULTS: The level of knowledge about skin cancer and photoprotection was unsatisfactory in more than 10% of the students. The occurrence of sunburn was extremely high among students, and 25% reported at least one episode of second degree sunburn. Proper use of sunscreen was referred by only 34% of individuals. Students who reported having received photo education in college were associated with a more consistent use of sunscreen. STUDY LIMITATIONS: health area represented a large part of the sample; instrument validated outside Brazil. CONCLUSIONS: Young people are unaware of basic information about sun protection and exposure. Even among those with proper knowledge, the use of photoprotective measures is very low. The sun exposure has shown to be excessive in most of the students, which makes this population an important target for photo-educational measures.


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Adulto Jovem , Estudantes/psicologia , Luz Solar , Conhecimentos, Atitudes e Prática em Saúde , Exposição Ambiental/estatística & dados numéricos , Hábitos , Neoplasias Cutâneas/prevenção & controle , Queimadura Solar/prevenção & controle , Protetores Solares/uso terapêutico , Brasil , Pigmentação da Pele , Estudos Transversais , Inquéritos e Questionários/estatística & dados numéricos
7.
An. bras. dermatol ; 94(1): 56-61, Jan.-Feb. 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-983734

RESUMO

Abstract: Background: Most of the organism's vitamin D (VD) is obtained through the cutaneous synthesis after exposure to the sun's UVB radiation. Sunscreens are indicated for the prevention of actinic damage to the skin, however, there are few clinical trials assessing the synthesis of cutaneous VD in real-life situations of sun exposure with ordinary clothing and usual photoprotection. Objectives: To evaluate the synthesis of VD with suberythemal sun exposure in healthy adults using topical photoprotection (SPF 30). Methods: Quasi-experimental study, conducted at Rio de Janeiro (Brazil), during winter, with 95 healthy adults who had 25-OH-VD checked twice, 24 hours apart, and were exposed to the sun (UVB=20 mJ/cm2), according to a randomized grouping: SC - use of SPF 30 on the face, neck and chest (n=64), NO - no sunscreens (n=10), CO - confined from sun exposure for 24h (n=21). The groups were matched according to the propensity score related to gender, age, phototype, body mass index, glycosylated hemoglobin and baseline levels of VD. The outcome evaluated was the variation (ΔVD) in serum level of 25-OH-VD (ng/ml) between the groups. Results: A statistically significant difference was identified between CO and SC groups [median (p25-p75)]: ΔVD =1.4 (-0.3-3.6) vs. 5.5 (4.8-6.6); p<0.01. There was no difference between SC and NO groups: 5.4 (3.1-6.1) vs. 4.1 (2.5-6.0); p=0.17. Study limitations: Laboratory analysis technique (chemiluminescence) with great variability, loss of food intake standardatization, unbalanced groups. Conclusions: Suberythemal sun exposure with sunscreen (SPF 30) provides similar vitamin D serum variation than without photoprotection in healthy adults.


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Luz Solar , Protetores Solares , Vitamina D/sangue , Valores de Referência , Pele/efeitos da radiação , Fatores de Tempo , Deficiência de Vitamina D , Estatísticas não Paramétricas , Medições Luminescentes
8.
Estud. interdiscip. envelhec ; 23(3): 159-173, dez. 2018. tab
Artigo em Português | LILACS, Index Psicologia - Periódicos técnico-científicos | ID: biblio-1010382

RESUMO

Objetivo: Identificar a presença do envelhecimento precoce de pele em pescadores de Salinópolis/PA. Métodos: A pesquisa foi realizada com 275 pescadores, de 18 a 59 anos, no período de março a maio de 2016, sendo aplicados dois questionários: "Protocolo de Avaliação Facial ­ PAF" e "Hábitos de exposição e fotoproteção solar", ambos modificados pelas pesquisadoras. Resultados: Foi observada prevalência de trabalhadores praianos de 26 a 35 anos (36%), pele parda (70%), fototipo III (64%) e com a presença de fotoenvelhecimento (61%), que se expunham diariamente ao sol (97%), não possuíam cuidados com a pele (91%) e não usavam protetor solar (92%). Os voluntários relataram que não gostavam de aplicar protetor solar (59%) e desconheciam que a radiação ultravioleta causava envelhecimento da pele (60%), manchas na pele (54%) ou câncer (56%). Conclusão: A maioria dos pescadores não utilizavam fotoprotetores e apresentavam fotoenvelhecimento com predisposição a desenvolver câncer de pele. (AU)


Objective: To identify the presence of precocious skin aging in fishermen in Salinópolis/PA. Methods: The research was carried out with 275 fishermen, from 18 to 59 years of age, from March to May 2016. Two questionnaires were applied: "Facial Evaluation Protocol ­ PAF" and "Habits of exposure and solar photoprotection", both modified by the researchers. Results: The prevalence of beach workers from 26 to 35 years of age (36%), of brown skin (70%), phototype III (64%) and photoaging (61%), who were exposed daily to the sun (97%), did not have skin care (91%) and did not use sunscreen (92%). The volunteers reported that they did not like to apply sunscreen (59%) and were unaware that ultraviolet radiation caused skin aging (60%), skin blemishes (54%) or cancer (56%). Conclusion: Most fishermen did not use photoprotectors and presented photoaging with a predisposition to develop skin cancer. (AU)


Assuntos
Humanos , Adolescente , Adulto , Pessoa de Meia-Idade , Neoplasias Cutâneas/etiologia , Protetores Solares/administração & dosagem , Raios Ultravioleta/efeitos adversos , Envelhecimento da Pele/efeitos da radiação , Pesqueiros , Luz Solar/efeitos adversos , Estudos Transversais
9.
An. bras. dermatol ; 93(1): 39-44, Jan.-Feb. 2018. tab, graf
Artigo em Inglês | LILACS | ID: biblio-887161

RESUMO

Abstract: Background: The greatest sun exposure occurs until adolescence and this is the only factor involved in photocarcinogenesis subject to modification with photoprotection. Objective: The objective of this study was to evaluate the habits and knowledge of adolescents regarding photoprotection. Method: Cross-sectional study that included 512 students from primary and high school. Data were collected by questionnaires with questions about habits and knowledge on sun protection. For data analysis, Pearson's Chi-square test and Yates test were applied, with 5% level of significance. Results: We evaluated 512 students, with a mean age of 14 years old. The teenagers agreed that ultraviolet rays cause skin cancer and aging (96% and 70%, respectively). Knowledge about the occurrence of burns even on cloudy days was recorded in 68% of cases, as well as the need for photoprotection for sports in 72%. The source of information about sun protection were by parents in 55%. In 70% was observed previous occurrence of sunburn, the daily use of sunscreens was found in 15% and 67% used only at the beach. of sunscreens with SPF higher than 30 was reported by 70% of students and 57% reported going to the beach between 10h and 16h. In 68% of cases it was registered insufficient sun protection, attributed, in 57% of the time to forgetfulness. Study limitations: The sample refers to two schools of Curitiba (PR), Brazil. Conclusion: Teenagers know the risks of sun exposure, but they do not adopt the practices for adequate protection.


Assuntos
Humanos , Masculino , Feminino , Adolescente , Luz Solar/efeitos adversos , Protetores Solares/uso terapêutico , Conhecimentos, Atitudes e Prática em Saúde , Comportamento do Adolescente , Exposição Ambiental/efeitos adversos , Queimadura Solar , Brasil , Estudos Transversais , Inquéritos e Questionários
10.
Rev. bras. psiquiatr ; 40(1): 6-11, Jan.-Mar. 2018. tab, graf
Artigo em Inglês | LILACS | ID: biblio-899396

RESUMO

Objective: To increase understanding of the influence of photoperiod variation in patients with bipolar disorders. Methods: We followed a sample of Italian bipolar patients over a period of 24 months, focusing on inpatients. All patients admitted to the Psychiatric Inpatient Unit of San Luigi Gonzaga Hospital in Orbassano (Turin, Italy) between September 1, 2013 and August 31, 2015 were recruited. Sociodemographic and clinical data were collected. Results: Seven hundred and thirty patients were included. The admission rate for bipolar patients was significantly higher during May, June and July, when there was maximum sunlight exposure, although no seasonal pattern was found. Patients with (hypo)manic episodes were admitted more frequently during the spring and during longer photoperiods than those with major depressive episodes. Conclusions: Photoperiod is a key element in bipolar disorder, not only as an environmental factor but also as an important clinical parameter that should be considered during treatment.


Assuntos
Humanos , Masculino , Feminino , Adulto , Estações do Ano , Luz Solar/efeitos adversos , Transtorno Bipolar/etiologia , Transtorno Bipolar/psicologia , Fotoperíodo , Fatores Socioeconômicos , Fatores Sexuais , Transtorno Depressivo Maior , Hospitalização/estatística & dados numéricos , Itália , Transtornos Mentais/classificação , Transtornos Mentais/etiologia , Transtornos Mentais/psicologia
11.
J. Health Biol. Sci. (Online) ; 6(1): 54-59, jan-mar.2018. tab
Artigo em Português | LILACS | ID: biblio-876356

RESUMO

Introdução: O câncer de pele é a neoplasia de maior incidência no Brasil. Vários fatores têm sido atribuídos como risco para seu desenvolvimento, como: cor da pele, horário e tempo de exposição ao sol, residência em um país tropical e uso de imunossupressão crônica. Objetivo: descrever os casos de câncer de pele, bem como o hábito de proteção solar na prevenção de lesões causadas por radiação ultravioleta. Métodos: estudo transversal, individualizado e observacional com 50 pacientes, com diagnóstico de câncer de pele, acompanhados no Ambulatório de Dermatologia da Universidade do Estado do Pará, na cidade de Belém (PA), no período de janeiro de 2013 a outubro de 2016. A pesquisa foi feita por meio de um questionário padronizado autoaplicativo. Resultados: Observou-se o maior acometimento de câncer de pele em pacientes com idade > 50 anos (90%), brancos (68%), olhos castanhos (68%), cabelos castanhos (78%), que não faziam uso de filtro solar (86%); com diagnóstico de Carcinoma Basocelular (94%), tendo a face como a área corporal mais acometida (52%). Conclusões: O carcinoma Basocelular com lesões de mais de um ano de surgimento foi o câncer de pele predominante nesta população em que a maioria não apresentava o hábito do uso de filtro solar. (AU)


Introduction: Skin cancer is the cancer with the highest incidence in Brazil. Several factors have been assigned as a risk for its development, such as skin color, exposure time to the sun, living in a tropical country, making use of chronic immunosuppression. Objective: describe the cases of skin cancer and sun protection habits in preventing lesions caused by ultraviolet radiation. Methods: A cross-sectional, individuated and observational study with 50 patients, with the diagnosis of skin cancer accompanied at the dermatology clinic in the Pará State University, in Belém (PA), in the period of October 2016. Results: the greatest involvement of skin cancer was observed in patients with the following characteristics: age > 50 years (90%), White (68%), Brown eyes (68%), Brown hair (78%), did not use sunscreen (86%); as well as the predominance of Basal Cell Carcinoma in patients (94%), having the face as the most affected body area (52%. Conclusion: Basal Cell Carcinoma with lesions more than one year old was the predominant skin cancer in the population, in which the majority did not have the habit of using sunscreen. (AU)


Assuntos
Neoplasias Cutâneas , Luz Solar , Protetores Solares
12.
Rev. Hosp. Ital. B. Aires (2004) ; 37(4): 157-159, dic. 2017. ilus
Artigo em Espanhol | LILACS | ID: biblio-1096381

RESUMO

El eritema polimorfo solar es la fotodermatosis más frecuente y suele aparecer en primavera con la primera exposición intensa al sol. Sus manifestaciones cutáneas son variadas y el diagnóstico se basa en la clínica junto al antecedente de exposición solar. En los casos leves, la fotoprotección suele ser suficiente para el control de la enfermedad, pero en formas más graves se requieren otras terapéuticas, como corticoides, antihistamínicos, o fototerapia, que genera una "fotoadaptación" de las áreas de piel afectadas. Presentamos un caso típico de erupción polimorfa solar que respondió de forma adecuada a medidas de fotoprotección. (AU)


The polymorphic solar eruption is the most frequent photodermatosis, and usually appears in spring with the first intense exposure to the sun. It has multiple cutaneous manifestations, and its diagnosis is based on the clinic and the antecedent of solar exposition. In mild cases, photoprotection is usually enough to control the disease, but in more severe forms, other therapies are required, such as corticosteroids, antihistamines, or phototherapy to generate a "photo-adaptation" of the affected skin areas. We present a typical case of polymorphic solar eruption that responded adequately to photoprotection measurements. (AU)


Assuntos
Humanos , Feminino , Adulto , Transtornos de Fotossensibilidade/diagnóstico , Luz Solar/efeitos adversos , Eritema/diagnóstico , Fototerapia , Transtornos de Fotossensibilidade/imunologia , Transtornos de Fotossensibilidade/patologia , Qualidade de Vida , Estações do Ano , Protetores Solares/uso terapêutico , Azatioprina/uso terapêutico , Talidomida/uso terapêutico , Raios Ultravioleta/efeitos adversos , Terapia Ultravioleta , Corticosteroides/uso terapêutico , Colecalciferol/uso terapêutico , Eritema/etiologia , Eritema/imunologia , Eritema/patologia , Antagonistas dos Receptores Histamínicos/uso terapêutico , Antimaláricos/uso terapêutico
13.
An. bras. dermatol ; 92(6): 793-800, Nov.-Dec. 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-887112

RESUMO

Abstract: Background: epigenomes can be influenced by environmental factors leading to the development of diseases. Objective: To investigate the influence of sun exposure on global DNA methylation and hydroxymethylation status and at specific sites of the miR-9-1, miR-9-3 and MTHFR genes in skin samples of subjects with no history of skin diseases. Methods: Skin samples were obtained by punch on sun-exposed and sun-protected arm areas from 24 corpses of 16-89 years of age. Genomic DNA was extracted from skin samples that were ranked according to Fitzpatrick's criteria as light, moderate, and dark brown. Global DNA methylation and hydroxymethylation and DNA methylation analyses at specific sites were performed using ELISA and MSP, respectively. Results: No significant differences in global DNA methylation and hydroxymethylation levels were found among the skin areas, skin types, or age. However, gender-related differences were detected, where women showed higher methylation levels. Global DNA methylation levels were higher than hydroxymethylation levels, and the levels of these DNA modifications correlated in skin tissue. For specific sites, no differences among the areas were detected. Additional analyses showed no differences in the methylation status when age, gender, and skin type were considered; however, the methylation status of the miR-9-1 gene seems to be gender related. Study limitations: there was no separation of dermis and epidermis and low sample size. Conclusion: sun exposure does not induce changes in the DNA methylation and hydroxymethylation status or in miR-9-1, miR-9-3 and MTHFR genes for the studied skin types.


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Idoso , Adulto Jovem , Pele/efeitos da radiação , Dermatopatias/etiologia , Luz Solar/efeitos adversos , Metilação de DNA/genética , Valores de Referência , Pele/química , Ensaio de Imunoadsorção Enzimática , Fatores Sexuais , Reação em Cadeia da Polimerase , Fatores Etários , Exposição à Radiação , MicroRNAs/genética , Metilenotetra-Hidrofolato Redutase (NADPH2)/genética , Epigenômica
14.
An. bras. dermatol ; 92(6): 774-778, Nov.-Dec. 2017. tab
Artigo em Inglês | LILACS | ID: biblio-887115

RESUMO

Abstract: Background: Actinic prurigo (AP) is an idiopathic photodermatosis. Although its initial manifestations can appear in 6 to 8-year-old children, cases are diagnosed later, between the second and fourth decades of life, when the injuries are exacerbated. Objective: To identify risk factors associated with clinical manifestations of AP such as skin and mucosal lesions. Methods: Thirty patients with AP and 60 controls were included in the study, the dependent variable was the presence of skin or labial mucosal lesions, the independent variables were age, sex, solar exposure, living with pets or farm animals, exposure to wood smoke, smoking habit, years smoking, and hours spent per day and per week in contact with people who smoke. Results: Of the 30 diagnosed AP patients, 66.7% were female. Patients age ranged from 7 to 71 years and the mean age was 35.77 ± 14.55 years. We found significant differences with the age and cohabitation with farm animals. Those who lived with farm animals presented 14.31 times higher probability of developing AP (95% CI 3-78.06). Study limitations: This is a case-control study; therefore, a causal relationship cannot be proven, and these results cannot be generalized to every population. Conclusions: The identification of factors related to the development of AP increases our knowledge of its physiopathology. Moreover, identifying antigens that possibly trigger the allergic reaction will have preventive and therapeutic applications in populations at risk of AP.


Assuntos
Humanos , Animais , Masculino , Feminino , Criança , Adolescente , Adulto , Pessoa de Meia-Idade , Idoso , Adulto Jovem , Transtornos de Fotossensibilidade/etiologia , Dermatopatias Genéticas/etiologia , Exposição Ambiental/efeitos adversos , Transtornos de Fotossensibilidade/fisiopatologia , Dermatopatias Genéticas/fisiopatologia , Luz Solar/efeitos adversos , Fatores de Tempo , Estudos de Casos e Controles , Modelos Logísticos , Fatores de Risco , Fatores Etários , Estatísticas não Paramétricas , Hipersensibilidade/etiologia , Hipersensibilidade/fisiopatologia , Animais Domésticos
15.
An. bras. dermatol ; 92(6): 785-792, Nov.-Dec. 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-887119

RESUMO

Abstract: Background: Decreasing the time of exposure to the sun and increasing sunscreen use are important actions to prevent skin cancer. Objective: This study aimed to verify the prevalence of exposure to the sun and the use of sunscreen, as well as associated factors among physical education teachers of the basic education network from city of Pelotas, southern Brazil. Methods: A census type study was conducted with physical education teachers of the basic education network from Pelotas. This study assessed the time of exposure to the sun in the workplace for at least 20 min, between 10am and 4pm, and the use of sunscreen during the workday. Results: 188 teachers answered the questionnaire. The prevalence of exposure to the sun between 10:00am and 4:00pm was 89.2% (95% CI of 83.8% -93.3%), while sunscreen use was 63.3% (95% CI of 56.0% -70.2%). However, when the sample was stratified by sex, women reported a higher rate of sunscreen use (78.5% -95% CI of 72.2-84.3) than men (38.9% -95% CI of 31.8-46.2) (p<0.001). Teachers with longer work weeks were at greater risk of exposure to the sun. In addition, women, with normal weight and who worked less hours, were more likely to use sunscreen. Study limitations: Cross-sectional study and lack of information on the proper use and frequency of use of sunscreen. Conclusion: Physical education teachers were highly exposed to solar radiation, and less than two-thirds used sunscreen during the workday. Interventions with this professional group are necessary to reduce the risk of skin cancer.


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Educação Física e Treinamento , Luz Solar/efeitos adversos , Protetores Solares/uso terapêutico , Exposição Ocupacional/estatística & dados numéricos , Neoplasias Cutâneas/prevenção & controle , Fatores de Tempo , Brasil/epidemiologia , Prevalência , Estudos Transversais , Análise Multivariada , Inquéritos e Questionários , Fatores de Risco , Distribuição por Sexo , Distribuição por Idade , Doenças Profissionais/prevenção & controle
16.
An. bras. dermatol ; 92(5): 704-706, Sept.-Oct. 2017. graf
Artigo em Inglês | LILACS | ID: biblio-887026

RESUMO

Abstract: Pigmented purpuric dermatoses are chronic vascular inflammatory conditions characterized by the presence of pigmented macules. Among its different presentations, lichen aureus is distinguished by the lichenoid conformation of its plaques and the predilection for lower limb involvement. Its segmented form is rare and difficult to control, especially in cases of symptomatic lesions. We report a rare case of segmental lichen aureus with six years of evolution associated with light itching. We also discuss the main therapeutic approaches to control the disease.


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Erupções Liquenoides/patologia , Luz Solar , Betametasona/uso terapêutico , Fármacos Fotossensibilizantes/uso terapêutico , Erupções Liquenoides/terapia , Glucocorticoides/uso terapêutico , Metoxaleno/uso terapêutico
17.
Clinics ; 72(7): 415-421, July 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-890715

RESUMO

OBJECTIVES: Recent studies have shown a high prevalence of hypovitaminosis D, defined as a serum 25-hydroxyvitamin D level less than 30 ng/ml, in both healthy populations and patients with chronic kidney disease. Patients undergoing kidney transplant are at an increased risk of skin cancer and are advised to avoid sunlight exposure. Therefore, these patients might share two major risk factors for hypovitaminosis D: chronic kidney disease and low sunlight exposure. This paper describes the prevalence and clinical characteristics of hypovitaminosis D among patients undergoing kidney transplant. METHODS: We evaluated 25-hydroxyvitamin D serum levels in a representative sample of patients undergoing kidney transplant. We sought to determine the prevalence of hypovitaminosis D, compare these patients with a control group, and identify factors associated with hypovitaminosis D (e.g., sunlight exposure and dietary habits). RESULTS: Hypovitaminosis D was found in 79% of patients undergoing kidney transplant, and the major associated factor was low sunlight exposure. These patients had higher creatinine and intact parathyroid hormone serum levels, with 25-hydroxyvitamin D being inversely correlated with intact parathyroid hormone serum levels. Compared with the control group, patients undergoing kidney transplant presented a higher prevalence of 25-hydroxyvitamin D deficiency and lower serum calcium, phosphate and albumin but higher creatinine and intact parathyroid hormone levels. CONCLUSIONS: Our results confirmed the high prevalence of hypovitaminosis D in patients undergoing kidney transplant. Therapeutic strategies such as moderate sunlight exposure and vitamin D supplementation should be seriously considered for this population.


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Adulto Jovem , Luz Solar , Deficiência de Vitamina D/etiologia , Transplante de Rim/efeitos adversos , Vitamina D/análogos & derivados , Vitamina D/sangue , Deficiência de Vitamina D/diagnóstico , Estudos de Casos e Controles , Fatores de Risco , Exposição Ambiental
18.
Biosci. j. (Online) ; 33(4): 1028-1037, july/aug. 2017. tab
Artigo em Inglês | LILACS | ID: biblio-966264

RESUMO

The aim of this study was to analyze the compatibility of the Metarhizium anisopliae JAB 68 isolate with liposoluble photoprotectants and the photoprotection conferred to its conidia. The fungus was cultivated in a medium with the photoprotectants Neo Heliopan® BB, Neo Heliopan® E 1000, Eusolex® 6007 and Neo Heliopan® AV in various concentrations. Vegetative growth, sporulation and germination were assessed to determine compatibility. Then, conidia were suspended in oil containing the compatible photoprotectants, in their respective concentrations, and exposed to 0-7 hours of light from a solar simulator operating at 1,000 W m-2. Neo Heliopan BB® and Neo Heliopan® E 1000 were compatible with M. anisopliae at 2% and 1%, respectively. Eusolex® 6007 and Neo Heliopan® AV were compatible up to 8% a 7%, respectively. Conidia exposed to radiation from the solar simulator, with photoprotectant-free oil as its carrier, presented germination of 78.12% after five hours. When adding any photoprotectant to the conidia oily suspension, the germination percentage was always higher than that obtained in the control. Neo Heliopan® BB at 1 and 2% and Neo Heliopan® AV at 0.5% increased the germination. After 7 hours of exposure the germination percentages were 93.77, 94.55 and 98.82%, respectively. Eusolex® 6007 was not as efficient as previous products, but in the same exposure period was able to protect the conidia (88.60% germination) when used at a 1% concentration. Adding photoprotectants in oily formulations of M. anisopliae protects against the harmful effects of UV radiation contributing to the fungus efficiency in the field.


O objetivo desse trabalho foi analisar a compatibilidade do isolado JAB 68 de Metarhizium anisopliae com fotoprotetores lipossolúveis e a fotoproteção conferida aos seus conídios. O fungo foi cultivado em meio contendo os fotoprotetores Neo Heliopan® BB, Neo Heliopan® E 1000, Eusolex® 6007, Neo Heliopan® AV em várias concentrações. O crescimento vegetativo, a esporulação e a germinação foram avaliados para determinar a compatibilidade. Conídios foram suspensos em óleo contendo os fotoprotetores compatíveis, em suas respectivas concentrações, e submetidos por 0 a 7 horas à luz de um simulador solar na potência de 1.000W m-2. Neo Heliopan BB® e Neo Heliopan® E 1000 foram compatíveis com M. anisopliae à 2% e 1%, respectivamente. Eusolex® 6007 e Neo Heliopan® AV foram compatíveis até 8% e 7%, respectivamente. Conídios de M. anisopliae expostos à radiação do simulador solar, tendo óleo isento de fotoprotetor como veículo, apresentaram germinação de 78,12% após cinco horas. Adicionando-se qualquer fotoprotetor à suspensão oleosa de conídios a porcentagem de germinação foi sempre maior que a obtida no controle. Neo Heliopan® BB a 1 e 2% e Neo Heliopan® AV a 0,5% incrementaram a germinação. Após 7 horas de exposição as porcentagens de germinação foram de 93,77, 94,55 e 98,82%, respectivamente. Eusolex® 6007 não foi tão eficiente quanto os produtos anteriores, mas no mesmo período de exposição foi capaz de proteger os conídios (88,60% de germinação) quando usado na concentração de 1%. A adição de fotoprotetores em formulações oleosas de M. anisopliae confere proteção aos raios UV, contribuindo com a eficiência do fungo no campo.


Assuntos
Esporos Fúngicos , Luz Solar , Raios Ultravioleta , Controle Biológico de Vetores , Metarhizium , Fungos
19.
An. acad. bras. ciênc ; 89(2): 1167-1174, Apr.-June 2017. graf
Artigo em Inglês | LILACS | ID: biblio-886713

RESUMO

ABSTRACT Piper hispidinervum C. DC. is popularly known as long-pepper and it owns a commercial value due to the essential oil it produces. Long-pepper oil is rich in safrole and eugenoln components that have insecticidal, fungicidal and bactericidal activity. It has been establish that to medicinal plants light influences not only growth but also essential oil production. The growth, the content of photosynthetic pigments and the essential oil production of Piper hispidinervum at greenhouses with different light conditions was evaluated. The treatments were characterized by cultivation of plants for 180 days under different light conditions, produced by shading greenhouses with 50% and 30% of natural incident irradiance, two colored shading nets red (RN) and blue (BN) both blocking 50% of the incident radiation and one treatment at full-sun (0% of shade). The results showed that the treatments of 50% shade and RN and BN were the ones which stimulated the greater growth. Blue and red light also had the best production of photosynthetic pigments. Essential oil yielded more under full sun therefore this is the most indicated condition to produce seedlings for the chemical and pharmaceutical industry.


Assuntos
Fotossíntese/fisiologia , Luz Solar , Óleos Voláteis/metabolismo , Piper/crescimento & desenvolvimento , Piper/efeitos da radiação , Piper/metabolismo , Fotossíntese/efeitos da radiação , Fatores de Tempo , Clorofila/análise , Clorofila/metabolismo , Reprodutibilidade dos Testes , Folhas de Planta/crescimento & desenvolvimento , Folhas de Planta/efeitos da radiação , Folhas de Planta/metabolismo
20.
Rev. bras. ginecol. obstet ; 39(3): 102-109, Mar. 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-843921

RESUMO

Abstract Objectives To assess the prevalence of hypovitaminosis D, altered arterial blood pressure, and serum levels of glucose and lipids in community-dwelling women in the city of Ribeirão Preto, in the southeast of Brazil. Methods Thiswas a cross-sectional studyof women aged40-70years old.Calciumintake and level of sun exposure were assessed by means of a questionnaire. A blood sample was used to determine glucose, lipid profile and 25-hydroxyvitaminD(25[OH]D) concentration. Results Ninety-one women were enrolled (age = 54.2 ± 7.1 years). Themean serum 25(OH)D concentration was 25.7 ± 8.9 ng/mL. A total of 24 (26.4%) women had 25 (OH)D levels < 20 ng/mL. Seventy women (76.9%) had 25(OH)D levels < 30 ng/mL. Seventy-five women (90.4%) had inadequate calcium intake, and 61 women (67%) had appropriate sun exposure, 49 of whom (80.3%) had serum 25(OH)D levels < 30 ng/mL. Conclusion This study indicates that even in community-dwelling women, living in a city with high sun exposure, serum levels of 25(OH)D > 30 ng/ml are hardly reached. Thus, it is probable that other intrinsic factors besides sun exposure may regulate the levels of vitamin D.


Resumo Objetivos Estimar a prevalência de hipovitaminose D, hipertensão arterial, e níveis séricos de glicose e perfil lipídico em uma comunidade de mulheres de Ribeirão Preto, no Sudeste brasileiro. Métodos Estudo transversal com mulheres de 40 a 70 anos de idade, submetidas a um questionário para determinar ingestão diária de cálcio e nível de exposição solar, e coleta de sangue para determinar glicose, perfil lipídico e concentração de 25- hidroxivitamina D (25[OH]D). Resultados Noventa e uma mulheres foram incluídas (idade = 54,2 ± 7,1 anos). O nível sérico médio de 25(OH)D foi 25,7 ± 8,9 ng/mL. Um total de 24 (26,4%) mulheres teve níveis de 25(OH)D < 20 ng/mL. Setenta mulheres (76.9%) tiveram níveis de 25 (OH)D < 30 ng/mL. Setenta e uma mulheres (90.4%) tiveram uma ingesta inadequada de cálcio e 61 mulheres (67%) tiveram exposição solar adequada; 49 das quais (80.3%) tiveram níveis séricos de 25(OH)D < 30 ng/mL. Conclusão Este estudo indica que mesmo morando em uma cidade com exposição solar adequada, níveis séricos de 25(OH)D > 30 ng/mL dificilmente são atingidos por mulheres climatéricas. Logo, é provável que outros fatores intrínsecos podem regular o nível de vitamina D.


Assuntos
Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Luz Solar , Deficiência de Vitamina D/epidemiologia , Vitamina D/análogos & derivados , Brasil/epidemiologia , Estudos Transversais , Prevalência , Vitamina D/sangue
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