RESUMO Este trabalho objetivou caracterizar a resistência antimicrobiana de 43 cepas de Escherichia coli isoladas do açude Santo Anastácio (Fortaleza, CE), durante os meses de janeiro a abril de 2007. As cepas foram submetidas a testes de suscetibilidade a oito antimicrobianos, tendo 67,4% delas apresentado sensibilidade a todos. Observou-se resistência à tetraciclina (25,6%), ao sulfazotrin (18,6%), ao ácido nalidixíco (9,3%) e a ciprofloxacina (4,7%). Nenhuma resistência foi observada aos betalactâmicos. Nove (21%) cepas apresentaram multirresistência, com um percentual de 78% para resistência cromossômica e 56% para resistência plasmidial. A presença de bactérias resistentes pode estar relacionada ao lançamento de antimicrobianos nas águas através de esgotos, sendo que o uso inadequado dessas águas pode comprometer a saúde da população.

ABSTRACT The aim of this study was to determine the antimicrobial resistance of 43 Escherichia coli strains isolated from the Santo Antonio weir (Fortaleza, CE, Brazil) from January to April 2007. Susceptibility tests performed with 8 antimicrobials indicated that 67.5% of the strains were susceptible to all of them. Resistance to tetracycline (25.6%), sulfazotrim (18.6%), nalidixic acid (9.3%), and ciprofloxacin (4.7%) was observed. The strains did not show resistance to betalactamics. Nine strains (21%) were multiresistant, the resistance being chromosome (78%) and plasmid (56%) mediated. The presence of resistant bacteria may be related to antimicrobials in the sewage discharged into the weir, and the inappropriate use of this body of water may pose human health risks.

O objetivo da pesquisa foi investigar a presença de Staphylococcus aureus resistente a antibióticos nos boxes de venda de peixe e nas mãos e cavidades nasal e oral de manipuladores de pescado da Feira de Pescado do Mucuripe, Fortaleza, Ceará. Todas as cepas isoladas foram resistentes à ampicilina e 44% apresentaram multiresistência.

The aim of this study was to investigate the presence of antibiotic resistant Staphylococcus aureus strains in fish stalls and in hands and nasal and oral cavities of fish handlers of the Mucuripe Fish Market, Fortaleza, Ceará, Brazil. All S. aureus isolates were resistant to Ampicillin and 44 % were multi-drug resistant.

O presente trabalho avaliou as atividades antinociceptiva e antiinflamatória do óleo essencial de cascas de Duguetia lanceolata. Para isto, foram realizados os testes de contorções abdominais induzidas por ácido acético; tempo da lambida da pata induzida por formalina; e edema de pata induzido por carragenina. O número de contorções abdominais (DE50 = 21,79 mg/kg) e o tempo da lambida da pata 1ª fase (DE50 = 5,27 mg/kg) e 2ª fase (DE50 = 1,43 mg/ kg) foram reduzidos significativamente de forma dependente da dose. O material vegetal nas doses de 50, 100 e 200 mg/kg diminuíram de maneira expressiva o edema de pata em 20,83; 36,46 e 48,96%, respectivamente. O óleo essencial de cascas de D. lanceolata possui efeitos antinociceptivo e antiinflamatório por prováveis ações central e periférica.

The present work evaluated the antinociceptive and anti-inflammatory activities of the essential oil from barks of Duguetia lanceolata. For this purpose, acetic acid writhing, formalin and carrageenan tests were performed. The number of writhings (ED50 = 21,79 mg/kg) and the lick of the paw 1st phase (ED50 = 5,27 mg/kg) e 2nd phase (ED50 = 1,43 mg/kg) reduced significantly in a dosedependent form. The doses 50, 100 and 200 mg/kg reduced the paw edema significantly in 20,83; 36,46 and 48,96%, respectively. These results suggest that the essential oil from barks of D. lanceolata has antinociceptive and anti-inflammatory effects and probably the mechanisms(s) involve central and peripheric actions.

As plantas denominadas de ruibarbo sintetizam antraquinonas e taninos, que são responsáveis pelos efeitos laxante e adstringente, respectivamente. Análises da qualidade de cinco matérias-primas de ruibarbo foram realizadas a fim de detectar adulterações. As reações para antraquinonas e taninos foram positivas. Os constituintes rapônticos foram observados na amostra de Rheum palmatum (2). As medidas de cinzas totais para Rheum palmatum (2) e Ferraria cathartica estão acima do esperado. Conforme resultados, as amostras de Rheum palmatum (2) e Ferraria cathartica devem estar adulteradas.

Plants known as rhubarb synthesize anthraquinones and tannins. Theses compounds have medicinal uses as laxative and astringent, respectivity. The quality of five raw materials was analysed to detect adulterant. Anthraquinones and tannins reactions were positive. Derivatives rhapontocoside were observed in the sample of Rheum palmatum (2). Total ashes were increased to Rheum palmatum (2) and Ferraria cathartica. According to the results, samples of Rheum palmatum (2) and Ferraria cathartica shoulde are adulterated.

This work was carried out to evaluate the damages caused by Grapholita molesta (Busck) in twigs and fruits of peach trees (Prunus persicae) in Caldas, MG, during the growing seasons of 1995/96 and 1996/97. Fruits and twigs from three branches of fifteen plants were examined every 15 days. A great variation in the percentage of twigs damage was obtained throughout each season, especially in the second year, when a peak was observed in the end of January. The averages of the porcentage of damage were estimated in 22,9% and 19,4% in 1995/96 and 1996/97, respectively. The total incidence in fruits was 28,1% during the first year and 21,6% during the second year with peaks well definided in the end of October and beginning of November of 1995/96.