|
|
|
| Registros recuperados: 44 | |
|
|
| MOURA, M. A. M.; OLIVEIRA, R.; DOMINGUES, I.; JONSSON, C. M.; NOGUEIRA, A. J. A.. |
| Resumo: A cana-de-açúcar é o carro-chefe da agricultura paulista e o Brasil é líder mundial na produção do etanol em larga escala, um combustível renovável que contribui para a redução da emissão de gases de efeito estufa, por evitar a queima de combustíveis fósseis. A alta produtividade desta cultura necessita, entretanto, do uso intensivo de defensivos agrícolas, que podem contaminar mananciais próximos às áreas de cultivo ou mesmo serem transportados afetando ecossistemas distantes. O uso simultâneo de diferentes herbicidas é comum nas lavouras, mas sua interação e o impacto sobre espécies não-alvo não são bem conhecidos. O objetivo deste trabalho foi avaliar o efeito da mistura de herbicidas ametrina e diuron, usada na lavoura canavieira, sobre o... |
| Tipo: Separatas |
Palavras-chave: Toxicidade aguda; Ametrina.; Herbicida; Agrotóxico; Cana de açúcar; Peixe de água doce; Toxidez; Sinergismo; Herbicides; Sugarcane; Danio rerio; Freshwater fish; Ecotoxicology; Synergism; Diuron; Endpoints.. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1007542 |
| |
|
| |
|
|
| Mantovani,R. P.; Rall,V. L. M.; Batalha,J. E. N.; Fernandes,A. A. H.; Fernandes Junior,A.. |
| Propolis is a natural resinous substance collected by bees from vegetal sources and its therapeutic properties have been investigated. In this work, we evaluated the inhibitory activity of ethanolic extracts of propolis (EEP) from the Southeast and South of Brazil on coagulase-negative Staphylococcus (CNS) growth as well as the EEP in vitro synergism with antimicrobial drugs by using the diffusion method (E-test). The EEP chemical characteristics (dry weight, pH, flavonoid and phenolic compounds) were determined. Seven drugs were tested, and synergism was observed between three drugs and Southeast EEP, six drugs and South EEP, and one drug and ethanol control. Ethanolic extracts of propolis from the South of Brazil presented the greatest flavonoid content... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian propolis; Coagulase-negative Staphylococcus; E-test; Antimicrobial drugs; Synergism. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992008000200012 |
| |
|
|
| Kubiça,Thaís Felli; Denardi,Laura Bedin; Azevedo,Maria Isabel; Oliveira,Vanessa; Severo,Luiz Carlos; Santurio,Janio Morais; Alves,Sydney Hartz. |
| ABSTRACT The antifungal activity of tacrolimus in combination with antifungal agents against different fungal species has been previously reported. Here we report the in vitro interactions between tacrolimus and amphotericin B, fluconazole, itraconazole, and caspofungin against 30 clinical isolates of both fluconazole-susceptible and fluconazole-resistant Trichosporon asahii. For these analyses, we used the broth microdilution method based on the M27-A3 technique and checkerboard microdilution method. Tacrolimus showed no activity against T. asahii strains (minimal inhibitory concentrations, MICs > 64.0 µg mL−1). However, a larger synergistic interaction was observed by the combinations tacrolimus + amphotericin B (96.67%) and tacrolimus + caspofungin... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Susceptibility; FK506; Resistance; Synergism. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702016000600539 |
| |
|
|
| Dutta,Noton K.; Dastidar,Sujata G.; Kumar,Asok; Mazumdar,Kaushiki; Ray,Raja; Chakrabarty,Atindra N.. |
| Diclofenac sodium, an antiinflammatory agent, exhibited remarkable inhibitory action against both drug sensitive and drug resistant clinical isolates of Mycobacterium tuberculosis, as well as other mycobacteria. This drug was tested in vitro against 45 different strains of mycobacteria, most of which were inhibited by the drug at 10-25 µg/ml concentration. When tested in vivo, diclofenac, injected at 10 µg/g body weight of a Swiss strain of white mice, could significantly protect them when challenged with 50 median lethal dose of M. tuberculosis H37 Rv 102. According to chi2 test, the in vivo data were highly significant (p<0.01). Diclofenac was further tested for synergism with the conventional antimycobacterial drug streptomycin against M. smegmatis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antiinflammatory drug; Diclofenac sodium; Antimycobacterial activity; Streptomycin; Synergism; Non-antibiotic. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000300009 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| ARAÚJO, N. J. S.; SILVA, A. R. P.; COSTA, M. S.; FREITAS, T. S.; BARBOSA FILHO, J. M.; MATOS, Y. M. L. S.; MORAIS-BRAGA, M. F. B.; PEREIRA JUNIOR, F. N.; SILVA, C. A. P.; SOUZA, E. O.; RIBEIRO, P. R. V.; LACERDA, B. C. G. V. DE; ANDRADE, E. M. DE; COUTINHO, H. D. M.; ANDRADE-PINHEIRO, J. C.. |
| Tipo: Artigo de periódico |
Palavras-chave: Inhibition; Inibição; Biofilme; Saponina; Sinergismo; Biofilm; Saponins; Synergism. |
| Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1149828 |
| |
|
|
| Lima,Rafaela Karin; Cardoso,Maria das Graças; Moraes,Jair Campos; Carvalho,Stephan Malfitano; Rodrigues,Vanessa Gregório; Guimarães,Luiz Gustavo Lima. |
| The chemical composition of Lippia sidoides essential oils obtained by hydrodistillation was characterized and quantified by GC/MS and their insecticidal activity by fumigation test was assayed against Tenebrio molitor. Moreover, the toxicity of monoterpenes carvacrol, 1,8-cineol and thymol were also evaluated when applied alone or in binary (1:1) or tertiary (1:1:1) mixture. The essential oil of L. sidoides has as major constituents carvacrol (31.68%), ρ-cymene (19.58%), 1,8-cineole (9.26%) and ϒ-terpinene (9.21%), from a 21 compounds identified, being 92.53% of total. Both compounds have insecticidal activity against T. molitor, being the degree of toxicity of carvacrol > 1,8-cineole > L. sidoides essential oil > thymol, and its respectively... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: "Alecrim pepper"; Mealworm; Natural compound; Toxicity; Synergism. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000400004 |
| |
|
|
| Bortolotto,Fernanda Cristina Kandalski; Ceccoti,Stephane Pini Costa; Orso,Paloma Bianca; Wolupeck,Hanna Lethycia; Holley,Richard Alan; Luciano,Fernando Bittencourt; Macedo,Renata Ernlund Freitas de. |
| ABSTRACT: Escherichia coli O157:H7 is a toxigenic serotype of E. coli and has been associated with foodborne outbreaks involving meat products, vegetables and fresh produces worldwide. Salts for curing are usually employed as antimicrobials in the production of pork sausages. However, salts do not have a significant inhibitory effect on enterobacteria. Due to the growing demand for natural foods, the use of essential oils has been proposed as natural antimicrobials in food. This study aimed to evaluate the effects of garlic essential oil (GO) and allyl isothiocyanate (AITC) against E. coli O157:H7 in vitro and in pork sausage. The Minimal Inhibitory Concentration (MIC) and Minimal Bactericidal Concentration (MBC) of these oils, alone and in combination,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Foodborne pathogens; Meat products; Natural preservatives; Synergism. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001000750 |
| |
|
|
| FERREIRA,S.D.; SALVALAGGIO,A.C.; MORATELLI,G.; VASCONCELOS,E.D.; COSTA,N.V.. |
| ABSTRACT: The objective of this study was to evaluate the chemical control of the species C. benghalensis and C. erecta with desiccants alone and mixtures, as well as the spreading of spray droplets on the leaf surfaces. The experimental design was completely randomized in a 2 x 16 factorial arrangement with four replications, totaling 32 treatments and 128 plots. The first factor is related to the species C. benghalensis and C. erecta and the second factor corresponds to the treatments carfentrazone-ethyl in doses of 15, 30, 60 g ha-1, which added 0.5% v v-1 adhesive spreader; glufosinate ammonium at doses of 100, 200, 400 g ha-1, added 0.5% v v-1 mineral oil; glyphosate at 240, 480, 960 g ha-1; carfentrazone-ethyl + glufosinate ammonium in doses of 100,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Weed; Droplets surface tension; Spreader and sticker agent; Chemical control; Synergism. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100278 |
| |
|
| |
|
| |
|
|
| CAMPOS, W. P.; SILVEIRA, M. A. da; CALIARI, M.; WANDER, A. E.. |
| An analysis of several indicators, socio-economic and environmental, through the Dashboard of Sustainability is possible to tell which category has the highest rate of farmer sustainability, whether smallholders or monoculture. However, the secondary data available in Brazil today does not support a thorough analysis of the participation of each actor and to which the interconnection between the actors and their synergy in local economic activity. Since, given the narrowing between urban and rural, the statistical data available are not able to demonstrate the extent to which gives the rural-urban dichotomy. Thus, it is relevant to point out and discuss ways to provide consistent statistical data and be, in fact, able to demonstrate the local reality of a... |
| Tipo: Parte de livro |
Palavras-chave: Dicotomia; Área rural; Área urbana; Estatística; Economia; Welfare economics; Synergism; Rural areas. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1018000 |
| |
|
|
| Rodrigues,M.; Barbosa Junior,F.; Perussi,J.R.. |
| This paper describes the effect of dipyridamole (DIP) on the cytotoxicity of cisplatin in HEp-2 human larynx cancer cells in vitro and the nature of the interaction between cisplatin and dipyridamole. Cytotoxic assays were performed to obtain the IC50 for cisplatin. The cells were treated with 0, 20, 40, 80, 120 or 200 µM cisplatin, with or without a single concentration of DIP and incubated for 60 min at 37ºC and 5% CO2 for 3 days and then counted with a hemocytometer. The accumulation of cisplatin in the cells was measured by atomic absorption and fluorescence was used to determine the membrane binding constant of DIP. In the presence of 10, 20 and 30 µM DIP, the IC50 of cisplatin was reduced by 25, 60 and 82% in HEp-2 cells. Combination index analysis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cisplatin; Dipyridamole; Synergism; Tumor cells; Cytotoxicity; IC50. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000400017 |
| |
|
| |
|
| |
|
|
| Ruiz, Nicolas; Petit, Karina; Vansteelandt, Marieke; Kerzaon, Isabelle; Baudet, Joseph; Amzil, Zouher; Biard, Jean-francois; Grovel, Olivier; Pouchus, Yves Francois. |
| Peptaibols are small linear fungal peptides which are produced in the marine environment. They exhibit neurotoxicity by forming pores in neuronal membranes. This work describes their combine effect with domoic acid, a neurotoxic phycotoxin, on Diptera larvae. The Acute toxicity bioassay on this biological model was tested with a panel of different toxins (microbial, algal or fungal). It allowed the discrimination of neurotoxins and non-neurotoxic toxins, and an evaluation of the toxicity level (MED and ED50) which were correlated with published LD50 in mice for neurotoxins tested. The highest activities on this test were found for Na+ channel blockers tetrodotoxin (ED50 = 0.026 mg/kg) and saxitoxin (ED50 = 0.18 mg/kg). Domoic acid was less active with an... |
| Tipo: Text |
Palavras-chave: Domoic acid; Peptaibol; Synergism; Neurotoxicity; Marine-derived fungal metabolite; Diptera larvae bioassay. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00002/11279/7886.pdf |
| |
| Registros recuperados: 44 | |
|
|
|
