Base de dados : LILACS
Pesquisa : D27.720.031.700 [Categoria DeCS]
Referências encontradas : 1084 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 109 ir para página                         

  1 / 1084 LILACS  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: biblio-1278447
Autor: Ozcelebi, Halime; Ari, Ferda; Dere, Egemen.
Título: Glutathione S-Transferase Activity in Tissues of Rats Exposed to Fenarimol
Fonte: Braz. arch. biol. technol;64:e21200751, 2021. graf.
Idioma: en.
Projeto: Bursa Uludag University.
Resumo: Abstract The unconscious use of pesticides causes various adverse effects on non-target organisms, including humans. Enzymes that control metabolism become the target of the pesticide and the organs are damaged due to toxic effects. Glutathione s-transferase (GST, EC 2.5.1.18), an important enzyme of the detoxification mechanism and antioxidant defense system, can be affected by such toxic substances. Therefore, the effect of fenarimol on GST enzyme activity was investigated in our study. For this, 200 mg/kg fenarimol was administered intraperitoneally to male and female rats at different periods (2, 4, 8, 16, 32, 64 and 72 hours). After application, GST enzyme activity was analysed in the liver, kidney, brain and small intestine tissues of the rats. According to our results, activation (liver, kidney, small intestine) or inhibition (brain) of the generally GST enzyme was observed in the tissues of rats exposed to fenarimol. It is thought that the increase and/or decrease in this enzyme activity may be the cause of the toxic effect of fenarimol.
Descritores: Praguicidas/efeitos adversos
Glutationa S-Transferase pi
-Ativação Enzimática
Fungicidas Industriais/efeitos adversos
Limites: Animais
Ratos
Responsável: BR1.1 - BIREME


  2 / 1084 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: biblio-962275
Autor: Fassa, Anaclaudia Gastal; Meucci, Rodrigo Dalke; Fiori, Nadia Spada; Carrett, Maria Laura Vidal; Faria, Neice Muller Xavier.
Título: Urinary cotinine in tobacco farmers in Southern Brazil
Fonte: Rev. saúde pública (Online);52:70, 2018. tab, graf.
Idioma: en.
Projeto: Conselho Nacional de Desenvolvimento Científico e Tecnológico; . Fundação de Amparo à Pesquisa do Rio Grande do Sul.
Resumo: ABSTRACT OBJECTIVE To describe urinary cotinine levels in tobacco farmers. METHODS A cross-sectional study was conducted in 2,570 tobacco farmers. All participants that reported green tobacco sickness in the week prior to the interview plus a subsample of 492 pesticide applicators were included. We collected urinary samples and information about sociodemographic, behavioral, dietary, occupational characteristics, and pesticide poisoning during their lifetime. Stratification by sex and smoking was performed and the Wilcoxon and Kruskal-Wallis non-parametrical tests were used to analyze cotinine means. RESULTS This study included 582 individuals. There was no difference in urinary cotinine means between green tobacco sickness symptomatic and asymptomatic individuals. Among non-smokers, having picked tobacco in the previous week was associated with higher cotinine means in both genders. Cotinine levels were higher on the first day of symptoms and reduced exponentially with each day in female non-smokers. Male non-smokers had higher levels on the second day and a more gradual reduction. The cotinine level rose up to 15 cigarettes/day of consumption. CONCLUSIONS The urinary cotinine measures exposure to nicotine up to its saturation point; while green tobacco sickness, affected by tolerance, indicates nicotine poisoning. Strategies to reduce nicotine exposure in tobacco production are needed. Mechanization could be an alternative, as long as it overcame the challenge of irregular terrain and did not affect the quality of the leaf. More studies are needed to evaluate the chronic effect of nicotine exposure.
Descritores: Tabaco/envenenamento
Exposição Ocupacional/análise
Cotinina/urina
Doenças dos Trabalhadores Agrícolas/urina
Fazendeiros
Nicotina/envenenamento
-Praguicidas/efeitos adversos
Absorção Cutânea
Fatores de Tempo
Tabaco/metabolismo
Brasil/epidemiologia
Fumar/efeitos adversos
Fumar/epidemiologia
Fatores Sexuais
Estudos Transversais
Exposição Ocupacional/efeitos adversos
Exposição Ocupacional/estatística & dados numéricos
Fatores Etários
Estatísticas não Paramétricas
Doenças dos Trabalhadores Agrícolas/epidemiologia
Pessoa de Meia-Idade
Nicotina/metabolismo
Limites: Humanos
Masculino
Feminino
Adolescente
Adulto
Adulto Jovem
Responsável: BR1.1 - BIREME


  3 / 1084 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: biblio-1058888
Autor: Silvério, Alessandra Cristina Pupin; Martins, Isarita; Nogueira, Denismar Alves; Mello, Marco Antônio Santos; Loyola, Edilaine Assunção Caetano de; Graciano, Miriam Monteiro de Castro.
Título: Assessment of Primary Health Care for rural workers exposed to pesticides / Avaliação da atenção primária à saúde de trabalhadores rurais expostos a praguicidas
Fonte: Rev. saúde pública (Online);54:09, 2020. tab.
Idioma: en.
Projeto: FAPEMIG.
Resumo: ABSTRACT OBJECTIVE To evaluate the attributes of Primary Health Care (PHC) for rural workers; to analyze sociodemographic conditions, history of poisoning and hospitalizations for pesticides and use of personal protective equipment; and to verify exposure to pesticides by determining bioindicators. METHODS Cross-sectional, descriptive-analytical study with a sample of 1,027 rural workers living in municipalities belonging to a regional health department in Southern Minas Gerais, whose PHC is governed by the Family Health Strategy model. We used the adult version of the Primary Care Assessment Tool (PCATool Brazil) and a structured questionnaire to collect socioeconomic data, history of poisoning and hospitalization for pesticides and use of personal protective equipment. Blood samples were collected to measure biomarkers of pesticide exposure and signs of renal and hepatic sequelae. RESULTS Low education was prevalent, as well as the intense contact of workers with pesticides. Frequent use of personal protective equipment was higher among men, as was the history of poisoning and hospitalizations for pesticides. Rates of 20% poisoning, 15% liver disease and 2% nephropathy were detected. Signs of hepatotoxicity were more frequent in men. Gender differences were all statistically significant. Regarding PHC, only the attribute "degree of affiliation" had a high score. None of the poisoning cases detected in the study were previously diagnosed. CONCLUSIONS Despite the high coverage of the Family Health Strategy, occupational risk and its consequences have not been detected by health services, which do not seem oriented to primary care, even lacking their essential attributes. There is a need for immediate and effective adaptation of public policies regarding the health of rural workers, with adequate training of teams and review of the portfolio of PHC services offered.

ABSTRACT OBJETIVO Avaliar os atributos da atenção primária à saúde (APS) na assistência à saúde de trabalhadores rurais; analisar condições sociodemográficas, histórico de intoxicação e internações por agrotóxicos e uso de equipamentos de proteção individual; e verificar a exposição aos praguicidas pela determinação de bioindicadores. MÉTODOS Estudo transversal, descritivo-analítico, com amostra de 1.027 trabalhadores rurais residentes em municípios pertencentes a uma superintendência regional de saúde do sul de Minas Gerais, cuja APS é regida pelo modelo da Estratégia Saúde da Família. Utilizou-se o Instrumento de Avaliação da Atenção Primária (PCATool Brasil) versão adulto e um questionário estruturado para coleta de dados socioeconômicos, histórico de intoxicação e internação por agrotóxicos e uso de equipamentos de proteção individual. Foram coletadas amostras sanguíneas para dosagem de biomarcadores de exposição a praguicidas e de sinais de sequelas renais e hepáticas. RESULTADOS A baixa escolaridade foi prevalente, bem como o contato intenso dos trabalhadores com praguicidas. O uso frequente de equipamentos de proteção individual foi maior entre os homens, assim como o histórico de intoxicação e de internações por agrotóxicos. Detectaram-se índices de 20% de intoxicação, 15% de hepatopatia e 2% de nefropatia. Os sinais de hepatotoxicidade foram mais frequentes em homens. As diferenças entre sexos foram todas estatisticamente significantes. Com relação à APS, apenas o atributo "grau de afiliação" apresentou escore elevado. Nenhum dos casos de intoxicação detectados no estudo tinha diagnóstico prévio. CONCLUSÕES A despeito de uma alta cobertura da Estratégia Saúde da Família, o risco ocupacional e suas consequências não têm sido detectados pelos serviços de saúde, que se apresentam como não orientados à atenção primária, carecendo mesmo de seus atributos essenciais. Percebe-se a necessidade de adequação imediata e efetiva das políticas públicas no que concerne à saúde do trabalhador rural, com adequada capacitação das equipes e revisão da carteira de serviços da APS ofertados.
Descritores: Praguicidas/toxicidade
Atenção Primária à Saúde/estatística & dados numéricos
Exposição Ocupacional/estatística & dados numéricos
Doenças dos Trabalhadores Agrícolas/induzido quimicamente
-População Rural
Fatores Socioeconômicos
Brasil/epidemiologia
Saúde da População Rural
Saúde da Família
Estudos Transversais
Inquéritos e Questionários
Fatores de Risco
Exposição Ocupacional/efeitos adversos
Doenças dos Trabalhadores Agrícolas/epidemiologia
Equipamento de Proteção Individual
Inseticidas/envenenamento
Pessoa de Meia-Idade
Limites: Humanos
Masculino
Feminino
Adulto
Responsável: BR1.1 - BIREME


  4 / 1084 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: biblio-1145055
Autor: Buralli, Rafael Junqueira; Ribeiro, Helena; Iglesias, Verónica; Muñoz-Quezada, María Teresa; Leão, Renata Spolti; Marques, Rejane Correa; Almeida, Milena Maria Cordeiro de; Guimarães, Jean Remy Davée.
Título: Occupational exposure to pesticides and health symptoms among family farmers in Brazil
Fonte: Rev. saúde pública (Online);54:133, 2020. tab, graf.
Idioma: en.
Projeto: Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); . Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Capes).
Resumo: ABSTRACT OBJECTIVE: To explore the association of occupational pesticide exposure with acute and mental health symptoms. METHODS: Cross-sectional survey carried out with 78 Brazilian family farmers, who were pesticide applicators and helpers conveniently selected. Symptoms and exposure data were collected by interviews, and mental health outcomes by the Self-Reporting Questionnaire. Blood samples were analyzed to assess cholinesterase levels. Exposure indicators and symptoms were compared between applicators and helpers, and Poisson regression was performed to estimate prevalence ratios. RESULTS: Farmers reported exposure to multiple pesticides from early ages; they worked without safety training, technical support, and full protective equipment, and they had a high prevalence of acute and mental health symptoms (e.g., headache, mucosal irritation, tachycardia, and depressive signs). Applicators had more cholinesterase changes than helpers, but less symptoms. Helpers used less personal protection and had significantly higher prevalence ratio of headache, dyspnea, wheezing, cough, poor digestion, tiredness, and feeling worthless, after adjustment. CONCLUSIONS: Acute and mental health symptoms were observed, both among farmers and helpers. Thus, surveillance actions must be reinforced in Brazil, technical support and safety training improved, focused on applicators and helpers, who are occupationally and environmentally exposed to pesticides. Agricultural practices of these groups with less pesticide use should receive incentive.
Descritores: Praguicidas/envenenamento
Praguicidas/toxicidade
Envenenamento/epidemiologia
Doenças Respiratórias/induzido quimicamente
Taquicardia/induzido quimicamente
Exposição Ocupacional/estatística & dados numéricos
Depressão/induzido quimicamente
Fazendeiros
Cefaleia/induzido quimicamente
-Doenças Respiratórias/diagnóstico
Doenças Respiratórias/epidemiologia
Taquicardia/epidemiologia
Brasil/epidemiologia
Família
Prevalência
Estudos Transversais
Exposição Ocupacional/efeitos adversos
Agricultura
Depressão/epidemiologia
Cefaleia/epidemiologia
Pessoa de Meia-Idade
Limites: Humanos
Masculino
Feminino
Criança
Adolescente
Adulto
Adulto Jovem
Responsável: BR1.1 - BIREME


  5 / 1084 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Saúde Pública
Silva, Marina Vieira da
Texto completo
Id: biblio-1280608
Autor: Marques, Jacqueline Mary Gerage; Silva, Marina Vieira da.
Título: Estimation of chronic dietary intake of pesticide residues / Estimativa de ingestão crônica de resíduos de agrotóxicos por meio da dieta
Fonte: Rev. saúde pública (Online);55:36, 2021. tab.
Idioma: en.
Resumo: ABSTRACT OBJECTIVE To estimate the maximum theoretical daily intake of pesticides potentially consumed, chronically, by the Brazilian population. METHOD By using data from the food consumption section of the 2008-2009 Household Budget Survey to characterize the population diet, a database was built to group the foods based on the NOVA classification. Considering the maximum residue limit values of each pesticide authorized in the country until 2016, the limits of all consumed foods were added and multiplied by the amount consumed, resulting in the maximum theoretical intake index, which was compared with the acceptable daily intake. RESULTS The results show that, of the 283 pesticides considered in the database, 71 (25%) compounds had estimates of zero intake, 144 compounds (50.8%) reached acceptable daily intake values and 68 compounds (24%) showed median intake that exceeded the acceptable daily value. The pesticide intake estimation according to the different regions of the country showed a variation in the amount of compounds that exceeded the acceptable daily intake (48 to 69 substances) due to the different consumption patterns. The categories of products that most exceeded the limits were the insecticides, herbicides and fungicides. CONCLUSION The application of this methodology is valid for the first step in risk assessment, but the resulting values may be different from the actual exposure since they do not include other factors, such as the combined use of pesticides or unauthorized products. The importance of developing research on specific national food consumption data in a systematic way is emphasized, which generates data and analyses that allow a detailed risk assessment.

RESUMO OBJETIVO Estimar a ingestão diária máxima teórica dos agrotóxicos potencialmente consumidos, de forma crônica, pela população brasileira. MÉTODO Utilizando os dados do bloco de consumo alimentar da Pesquisa de Orçamentos Familiares de 2008-2009 para caracterização da dieta da população, foi construído um banco de dados agrupando os alimentos com base na classificação NOVA. Considerando os valores de limite máximo de resíduos de cada agrotóxico autorizado no país até o ano de 2016, foram somados os limites de todos os alimentos consumidos, multiplicados pela quantidade consumida, gerando o índice de ingestão teórica máxima, que foi comparado com a ingestão diária aceitável. RESULTADOS Os resultados mostram que dos 283 agrotóxicos considerados no banco de dados, 71 compostos tiveram estimativas de ingestão zero (25%), 144 compostos (50,8%) atingiram aos valores de ingestão diária aceitável e 68 compostos (24%) apresentaram mediana de ingestão que excedeu o valor diário aceitável. Quando realizada a estimativa de ingestão de agrotóxicos discriminando as distintas regiões do país, houve variação (entre 48 e 69 substâncias) na quantidade de compostos que excederam a ingestão diária aceitável devido aos diferentes padrões de consumo da população. As categorias dos produtos que mais excederam as estimativas são inseticidas, herbicidas e fungicidas. CONCLUSÃO A aplicação dessa metodologia é válida para o primeiro passo na avaliação de risco, porém os valores resultantes podem ser diferentes da exposição real por não englobar outros fatores, como o uso combinado de agrotóxicos ou de produtos de uso não autorizado. É ressaltada a importância do desenvolvimento de pesquisas de dados específicos de consumo de alimentos nacionais de forma sistemática, gerando dados e análises que viabilizem uma avaliação pormenorizada sobre riscos.
Descritores: Praguicidas
Resíduos de Praguicidas/análise
-Brasil
Contaminação de Alimentos/análise
Medição de Risco
Ingestão de Alimentos
Limites: Humanos
Responsável: BR1.1 - BIREME


  6 / 1084 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
Id: biblio-1178861
Autor: García, Carmiña; Heredia, Claudia; Flores, Pamela; Parra, Cinthia.
Título: El uso de los agrotoxicos y su afectación al sistema inmune: un tema de interés actual / The use of pesticides and affectation on immune system: an issue of current interest
Fonte: Con-ciencia (La Paz);4(2):61-70, nov. 2016.
Idioma: es.
Resumo: Actualmente se conoce que nos enfrentamos a una variedad de agentes químicos (agrotóxicos) como ser los plaguicidas, pesticidas, herbicidas, porque están presentes en el ambiente, en los alimentos, en el agua, en bajas concentraciones, pero que a la larga inducen efectos nocivos en la salud. Se utilizan estos agentes químicos en los programas públicos de salud, para la erradicación de criaderos de mosquitos transmisores de enfermedades como por ejemplo el vector de la malaria y se utilizan también en la agricultura, principalmente para el control de plagas, que afectan grandemente en la producción de productos alimenticios. La aplicación indiscriminada de estos agrotóxicos, ahora en países como el nuestro, está causando una grave contaminación ambiental, aumentando los potenciales riesgos para la salud, porque estos tóxicos se difunden rápidamente en el medio ambiente por lo que es necesario conocer los estudios realizados a nivel mundial de los potenciales riesgos para la salud humana. La mayoría de los estudios se han realizado en animales de experimentación. La inmunotoxicidad no es solo el resultado del contacto con grandes dosis de un agrotóxicos, sino también de la exposición crónica a bajas dosis, durante largos periodos de tiempo. Las investigaciones sobre la toxicidad de los plaguicidas se han centrado en observar: alteraciones enzimáticas, efectos patológicos, mutagénicos y cancerígenos en poblaciones humanas expuestas y solo recientemente se han estudiado los efectos de los plaguicidas sobre la respuesta inmune. Estos estudios no tienen conclusiones implícitas sobre la inmunotoxicidad, sin embargo, dejan claramente establecido que los efectos lentos o retrasados de los agrotóxicos sobre la salud y principalmente sobre el sistema inmune, a pesar de que son más difíciles de detectar, son los más importantes, porque dan lugar a diferentes tipos de alteraciones como la susceptibilidad a enfermedades, diagnosticadas tardíamente las cuales en muchos casos no tiene un pronóstico favorable.

Currently it is known that we face a variety of chemicals (pesticides) such as pesticides, pesticides, herbicides, because they are present in the environment, in food, in water, in low concentrations, but eventually induce effects harmful to health. These chemicals are used in public health programs for the eradication of breeding sites for mosquitoes transmitting diseases such as malaria vector and are also used in agriculture, mainly for pest control, which greatly affect the food production. The indiscriminate application of these pesticides, now in countries like ours, is causing severe environmental pollution, increasing the potential health risks because these toxic diffuse rapidly in the environment so it is necessary to know the level studies world of potential risks to human health. Most studies have been conducted in experimental animals. Immunotoxicity is not only the result of contact with large doses of pesticides, but chronic exposure to low doses over long periods of time.Researches on the toxicity of pesticides have focused on observing: enzyme abnormalities, pathological effects, mutagenic and carcinogenic in human populations exposed and only recently have studied the effects of pesticides on the immune response.These studies have implied conclusions on immunotoxicity, however, they leave it clear that the slow effects or delayed of pesticides on health and primarily on the immune system, although they are more difficult to detect, are the most important, because they give rise to different types of disturbances such as disease susceptibility, belatedly diagnosed which in many cases have a favorable prognosis.
Descritores: Praguicidas
Agroquímicos
Poluição Ambiental
Toxicidade
-Controle de Pragas
Agricultura
Alimentos
Responsável: BO138.1 - Biblioteca Central


  7 / 1084 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Cuba
Texto completo
Texto completo
Id: biblio-1149906
Autor: Orellana García, Arturo; Mesa Cisneros, Victor Alexis; Miranda Hernández, Manuel Alejandro.
Título: Software de gestión y análisis de los casos de intoxicaciones por plaguicidas - PlaguiTox / Management and analysis software for pesticide poisoning cases - PlaguiTox
Fonte: Rev. cuba. med. mil;49(2):e482, abr.-jun. 2020. tab.
Idioma: es.
Resumo: Introducción: El Centro Nacional de Toxicología de Cuba, supervisa y controla la información de eventos atribuibles a la inmunización, vacunación e intoxicaciones con medicamentos y plaguicidas. Los casos que llegan al centro, se justifican mayormente por el uso de plaguicidas que tienen un alto nivel de toxicidad y riesgo de muerte. Los especialistas en toxicología, requieren facilidad para revisar las hojas de seguridad, el listado oficial de plaguicidas autorizados en Cuba y los casos anteriores. Esto permite analizar y emitir un diagnóstico, que salve la vida del afectado. Objetivo: Presentar un sistema para la gestión y el análisis de los casos intoxicados por plaguicidas. Métodos: El desarrollo se sustentó en la metodología de software Extreme Programming, modelado con la herramienta CASE Visual Paradigm 8.0 y lenguaje UML 2.0. Se utilizó Java con NetBeans 8.0.2 y como gestor de base de datos PostgreSQL 9.3. Resultados: Se desarrolló una herramienta de gestión de la información toxicológica, así como una base de casos de los síntomas, plaguicidas y diagnóstico por plaguicida. Los especialistas en toxicología cuentan con una herramienta de apoyo a la toma de decisiones, que reduce la ocurrencia de errores humanos(AU)

Introduction: The Cuban National Toxicology Center supervises and controls the information of events attributable to immunization, vaccination and poisonings with medications and pesticides. The cases that arrive at the center are mainly justified by the use of pesticides that have a high level of toxicity and risk of death. Specialists in toxicology require ease to review the safety sheets, the official list of authorized pesticides in Cuba and the above cases. This allows analyzing and issuing a diagnosis that saves the life of the affected person. Objective: To present a system for the management and analysis of cases poisoned by pesticides. Methods: The development was based on the Extreme Programming software methodology, modeled with the CASE Visual Paradigm 8.0 tool and the UML 2.0 language. Java was used with NetBeans 8.0.2 and as PostgreSQL 9.3 database manager. Results: A toxicological information management tool was developed, as well as a case database of symptoms, pesticides and pesticide diagnosis. Toxicology specialists have a decision support tool that reduces the occurrence of human errors(AU)
Descritores: Praguicidas/efeitos adversos
Praguicidas/envenenamento
Software/normas
-Cuba
Limites: Humanos
Responsável: CU1.1 - Biblioteca Médica Nacional


  8 / 1084 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
Id: biblio-834308
Autor: Alvarez Valenzuela, Gustavo Adolfo; Santos Bravo, María del Carmen; Centes Carrillo, Luis Fernando.
Título: Bioprospección de los hiperparásitos cicinobolus cesatii de bary y eudarluca caricis (Biv.) O.E. Erikss sobre cultivos y plantas adyacentes en la región central de Guatemala / Bioprospecting of fungal hyperparasites cicinobolus cesatii de bary and eudarluca caricis (Biv.) O.E. Erikss on crops and adjacent plants in central region of Guatemala
Fonte: Cienc. tecnol. salud;1(1):43-49, jul.-dic. 2014. ilus, tab.
Idioma: es.
Resumo: Se realizó una bioprospección para detectar los hiperparásitos Cicinobolus cesatii y Eudarluca caricis en la región central de Guatemala para establecer la presencia y la obtención de cepas prometedoras para control biológico. Setecientos seis muestras de plantas silvestres y cultivadas fueron analizadas, en 16 se detectó C. cesatii y en 46 E. caricis. Las regiones con más detecciones de ambos hiperparásitos fueron San Juan Comalapa y Tecpán Guatemala del departamento de Chimaltenango, emergiendo como una región con alto potencial biológico y variabilidad. Se obtuvieron aislamientos e hicieron comparaciones de estructuras reproductivas y se estableció que existe variabilidad a través de análisis estadístico que marcó diferencias significativas al 5% de significancia al comparar entre cepas de la misma localidad y entre localidades, además de la diferencia entre origen vegetal. También se estableció que hay cepas promisorias de C. cesatii aislado de Physalis sp. y E. caricis aislado de Prunus sp., Zea mays y Phaseolus vulgaris. El estudio pone de manifiesto el potencial de presencia de ambos agentes sobre plantas silvestres o áreas sin aplicación de fungicidas.

Bioprospecting was performed to detect hyperparasites Cicinobolus cesatii and Eudarluca caricis in central region of Guatemala to establish their presence and obtain promising strains to be use in biological control. Seven hundred and six samples from wild and cultivated plants were analyzed; C. cesatii was detected in 16 samples, and 46 cases of E. caricis. Both hyperparasites were identified in San Juan Comalapa and Tecpan of Chimaltenango County, having high biological potential and variability. Reproductive structures comparison of the different isolates was made and its variability was established through statistical analysis showing significant differences when they were compare between strains from the same site and between sites, also they showed difference between plant origins. These strains such as C. cesatii from Physalis sp. and E. caricis from Prunus sp., Zea mays and Phaseolus vulgaris have a high potential. This research showed a high presence of both agents on wild plants or areas without application of fungicides.
Descritores: Controle Biológico de Vetores
Cultivos Agrícolas
Plantas
-Biodiversidade
Fungicidas Industriais
Praguicidas
Limites: Animais
Responsável: GT49.1


  9 / 1084 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Chile
Texto completo
Id: biblio-950747
Autor: Khan, Alam; Islam, Md Hedayetul; Islam, Md Ekramul; Al-Bari, Md Abdul Alim; Parvin, Mst Shahnaj; Sayeed, Mohammed Abu; Islam, Md Nurul; Haque, Md Ekramul.
Título: Pesticidal and pest repellency activities of rhizomes of Drynaria quercifolia (J. Smith) against Tribolium castaneum (Herbst)
Fonte: Biol. Res;47:1-6, 2014. ilus, graf, tab.
Idioma: en.
Resumo: BACKGROUND: Tribolium castaneum (Herbst) is a harmful pest of stored grain and flour-based products in tropical and subtropical region. In the present study, rhizome of Drynaria quercifolia (J. Smith) was evaluated for pesticidal and pest repellency activities against T. castaneum, using surface film method and filter paper disc method, respectively. In addition, activity of the isolated compound 3,4-dihydroxybenzoic acid was evaluated against the pest. RESULTS: Chloroform soluble fraction of ethanol extract of rhizome of D. quercifolia showed significant pesticidal activity at doses 0.88 to 1.77 mg/cm² and significant pest repellency activity at doses 0.94 to 0.23 mg/cm². No pesticidal and pest repellency activity was found for petroleum ether, ethyl acetate and methanol soluble fractions of ethanol extract as well as for 3,4-dihydroxybenzoic acid. CONCLUSION: Considering our findings it can be concluded that chloroform soluble fraction of rhizome of D. quercifoliais useful in controlling T. castaneum of stored grain and flour-based products.
Descritores: Praguicidas
Tribolium/efeitos dos fármacos
Controle de Pragas/métodos
Polypodiaceae/química
Rizoma/química
Hidroxibenzoatos/farmacologia
Repelentes de Insetos/farmacologia
-Extratos Vegetais/isolamento & purificação
Extratos Vegetais/química
Clorofórmio
Etanol
Metanol
Alcanos
Hidroxibenzoatos/isolamento & purificação
Dose Letal Mediana
Acetatos
Limites: Animais
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: CL1.1 - Biblioteca Central


  10 / 1084 LILACS  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Chile
Texto completo
Id: biblio-950764
Autor: Khan, Alam; Islam, Shariful; Rahman, Moizur; Zaman, Tanjeena; Haque, Ekramul.
Título: Pesticidal and pest repellency activities of a plant derived triterpenoid 2α, 3ß, 21ß, 23, 28-penta hydroxyl 12-oleanene against Tribolium castaneum
Fonte: Biol. Res;47:1-6, 2014. graf, tab.
Idioma: en.
Resumo: BACKGROUND: Tribolium castaneum (Herbst) is a major pest of stored grain-based products, and cause severe damage to cereal grains throughout the world. The present investigation was aimed to determine the pesticidal and pest repellent activities of 2α,3ß,21ß,23,28-penta hydroxyl 12-oleanene against T. castaneum. The compound 2α,3ß,21ß,23,28-penta hydroxyl 12-oleanene is a triterpenoid which was isolated from the roots of Laportea crenulata Gaud. Surface film technique was used for pesticidal screening, whereas, pest repellency property of the triterpenoid was determined by filter paper disc method. RESULTS: At 24 hours of exposure duration, significant mortality records (80% and 86%) were observed at doses 0.88 and 1.77 mg/cm². No significant change in mortality records was observed when duration of exposure was increased up to 48 hours. The triterpenoid showed significant repellency activity at doses 0.47 and 0.94 mg/cm². CONCLUSION: These data suggest that the triterpenoid 2α,3ß,21ß,23,28-penta hydroxyl 12-oleanene possess both pesticidal and pest repellency activities against T. castaneum and can be used in controlling the pest of grain-based products.
Descritores: Ácido Oleanólico/análogos & derivados
Tribolium/efeitos dos fármacos
Controle de Insetos/métodos
Urticaceae/química
Repelentes de Insetos/farmacologia
-Ácido Oleanólico/farmacologia
Praguicidas/farmacologia
Tribolium/classificação
Raízes de Plantas/química
Urticaceae/classificação
Dose Letal Mediana
Limites: Animais
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: CL1.1 - Biblioteca Central



página 1 de 109 ir para página                         
   


Refinar a pesquisa
  Base de dados : Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde