Results: 445

Antibiotic activity of Plectranthus ornatus Codd, a Traditional Medicinal Plant

An. acad. bras. ciênc; 89 (3,supl), 2017
ABSTRACT The dichloromethane extract of Plectranthus ornatus Codd., a tradicional medicinal plant, showed antibiotic activity with minimum inhibitory concentration (MIC) values of 0.4 mg.mL-1 and 100 percent of biofilm inhibition against Staphylococcus aureus strains isolated from animals with mastitis i...

Cytotoxicity and bacterial membrane destabilization induced by Annona squamosa L. extracts

An. acad. bras. ciênc; 89 (3,supl), 2017
ABSTRACT This study aimed to further investigate the cytotoxicity against tumor cell lines and several bacterial strains of Annona squamosa and its mode of action. Methanol extracts of A. squamosa leaves (ASL) and seeds (ASS) were used. ASL showed significant antibacterial activity against S. aureus, K. ...

Antimicrobial and enzymatic activity of anemophilous fungi of a public university in Brazil

An. acad. bras. ciênc; 89 (3,supl), 2017
ABSTRACT To the fungal microbiota the UFPE and biotechnological potential enzymatic and antimicrobial production. Air conditioned environments were sampled using a passive sedimentation technique, the air I ratio and the presence of aflatoxigenic strains evaluated for ANVISA. Icelles were to determine th...

Melipona mondury produces a geopropolis with antioxidant, antibacterial and antiproliferative activities

An. acad. bras. ciênc; 89 (3,supl), 2017
ABSTRACT Geopropolis is a special type of propolis produced by stingless bees. Several pharmacological properties have been described for different types of geopropolis, but there have been no previous studies of the geopropolis from Melipona mondury. In this study, we investigated the antioxidant, antib...

The importance of integrons for development and propagation of resistance in Shigella: the case of Latin America

Braz. j. microbiol; 47 (4), 2016
Abstract In Latin America, the disease burden of shigellosis is found to coexist with the rapid and rampant spread of resistance to commonly used antibiotics. The molecular basis of antibiotic resistance lies within genetic elements such as plasmids, transposons, integrons, genomic islands, etc., which a...

The role of gyrA and parC mutations in fluoroquinolones-resistant Pseudomonas aeruginosa isolates from Iran

Braz. j. microbiol; 47 (4), 2016
Abstract The aim of this study was to examine mutations in the quinolone-resistance-determining region (QRDR) of gyrA and parC genes in Pseudomonas aeruginosa isolates. A total of 100 clinical P. aeruginosa isolates were collected from different university-affiliated hospitals in Tabriz, Iran. Minimum in...

Analysis of risk factors and clinical manifestations associated with Clostridium difficile disease in Serbian hospitalized patients

Braz. j. microbiol; 47 (4), 2016
Abstract Clostridium difficile is the leading cause of infectious diarrhoea in hospitalized patients. The aim of this study was to determine the risk factors important for the development of hospital-acquired Clostridium difficile-associated disease and clinical manifestations of Clostridium difficile-as...

Rhizobacterial characterization for quality control of eucalyptus biogrowth promoter products

Braz. j. microbiol; 47 (4), 2016
Abstract Plant growth-promoting rhizobacteria strains from special formulations have been used to optimize eucalyptus cutting production. To undertake quality control for the formulated products, the rhizobacterial strains should be characterized to assess their purity and authentication. In the present ...

Comportamiento antibacteriano de partículas de cobre frente a microorganismos obtenidos de úlceras crónicas infectadas y su relación con la resistencia a antimicrobianos de uso común

Rev. méd. Chile; 144 (12), 2016
Background: The antimicrobial activity of copper (Cu+2) is recognized and used as an antimicrobial agent. Aim: To evaluate the antimicrobial activity of copper against microorganisms obtained from chronic cutaneous wound infections. Material and Methods: Five chemical products that contained copper parti...

Eficacia antimicrobiana del primer ortodóncico adicionado con nanopartículas de plata: Estudio transversal in vitro

Invest. clín; 57 (4), 2016
Se evaluó la eficacia antimicrobiana de las nanopartículas de plata (NPsAg) incorporadas al adhesivo (primer) colocado en el esmalte dental adyacente a la aparatología ortodóncica fija (brackets). Se realizó un estudio experimental in vitro en 40 premolares, los cuales se dividieron en dos grupos co...