Recent studies in eastern Amazon coastal drainages and their surroundings have revealed new fish species that sometimes exhibit little morphological differentiation (cryptic species). Thus, we used a DNA-based species delimitation approach to test if populations showing the morphotype and typical charact...
Gonçalves, Verônica Dias;
Meirelles-Pereira, Frederico;
Cataldo, Márcio;
Fonseca, Bianca de Oliveira;
Nogueira, Barbara Araujo;
Olivella, Julianna Giordano Botelho;
Esteves, Francisco de Assis;
Mattos-Guaraldi, Ana Luiza;
Andrade, Arnaldo Feitosa Braga de;
Bello, Alexandre Ribeiro;
Pereira, José Augusto Adler.
Abstract Introduction: The use of antibiotics in humans, animal husbandry and veterinary activities induces selective pressure leading to the colonization and infection by resistant strains. Objective: We evaluated water samples collected from rivers of the Guanabara Bay, which have suffered minor and ...
Bahías/microbiología,
Farmacorresistencia Bacteriana Múltiple,
Infecciones por Enterobacteriaceae/microbiología,
Enterobacteriaceae/efectos de los fármacos,
Genes Bacterianos,
Ríos/microbiología,
Microbiología del Agua,
Proteínas Bacterianas/genética,
Proteínas Bacterianas/fisiología,
Brasil/epidemiología,
Recuento de Colonia Microbiana,
ADN Bacteriano/genética,
Farmacorresistencia Bacteriana Múltiple/genética,
Enterobacteriaceae/enzimología,
Enterobacteriaceae/genética,
Enterobacteriaceae/aislamiento & purificación,
Hospitales Urbanos,
Residuos Sanitarios,
Plásmidos/genética,
Contaminación del Agua
Abstract Escalating burden of antibiotic resistance that has reached new heights present a grave concern to mankind. As the problem is no longer confined to clinics, we hereby report identification of a pandrug resistant Escherichia coli isolate from heavily polluted Delhi stretch of river Yamuna, India....
Antibacterianos/farmacología,
Farmacorresistencia Bacteriana Múltiple,
Escherichia coli/efectos de los fármacos,
Escherichia coli/enzimología,
Escherichia coli/genética,
Escherichia coli/aislamiento & purificación,
Proteínas de Escherichia coli/genética,
Proteínas de Escherichia coli/metabolismo,
India,
Metales Pesados/farmacología,
Pruebas de Sensibilidad Microbiana,
Operón,
Ríos/microbiología,
beta-Lactamasas/genética,
beta-Lactamasas/metabolismo
Abstract The detection of pathogenic microorganisms in aquatic environments is extremely relevant in terms of public health. As these laboratorial methodologies are usually difficult, expensive and time-consuming, they are frequently replaced by the assessment of fecal indicator bacteria, such as Escheri...
ABSTRACT Detection of virulent strains associated with aquatic environment is a current concern for the management and control of human and animal health. Thus, Vibrio diversity was investigated in four estuaries from state of Ceará (Pacoti, Choró, Pirangi and Jaguaribe) followed by antimicrobial susce...
Antibacterianos/farmacología,
Organismos Acuáticos/efectos de los fármacos,
Organismos Acuáticos/aislamiento & purificación,
Organismos Acuáticos/patogenicidad,
Brasil,
Resistencia a Múltiples Medicamentos,
Estuarios,
Mapeo Geográfico,
Pruebas de Sensibilidad Microbiana,
Ríos/microbiología,
Vibrio/efectos de los fármacos,
Vibrio/aislamiento & purificación,
Vibrio/patogenicidad,
Virulencia,
Factores de Virulencia,
Microbiología del Agua
Abstract This study was conducted to investigate the occurrence of PAH degrading microorganisms in two river systems in the Western Cape, South Africa and their ability to degrade two PAH compounds: acenaphthene and fluorene. A total of 19 bacterial isolates were obtained from the Diep and Plankenburg ri...
Abstract Rivers and streams are important reservoirs of freshwater for human consumption. These ecosystems are threatened by increasing urbanization, because raw sewage discharged into them alters their nutrient content and may affect the composition of their microbial community. In the present study, we...
Metagenoma,
Microbiota,
Ríos/microbiología,
Urbanización,
Microbiología del Agua,
Código de Barras del ADN Taxonómico,
Ecosistema,
Metabolismo Energético,
Redes y Vías Metabólicas,
Metagenómica,
Filogenia,
ARN Ribosómico 16S/genética
Abstract The objective of this work was to investigate the patterns of diversity and abundance of ciliates protozoa community in three tropical urban streams and verify which species can be considered bioindicators of water quality. In each stream, three regions (headwater, middle and mouth) were sampled...
O Rio dos Sinos está localizado na região sul do Brasil, possui aproximadamente 190 km de extensão e fornece água para atividades agrícolas, industriais e para o consumo de mais de um milhão de habitantes. Este rio é considerado um dos mais poluídos do Brasil e, portanto, estudos para avaliar a q...
ABSTRACT Plesiomonas shigelloides isolated from water in Brazil was previously described as a hemorrhagic heat-labile cytotoxic-enterotoxin producer. We purified this toxin from culture supernatants using ion metallic affinity chromatography (IMAC) followed by molecular exclusion chromatography. The pure...
Supervivencia Celular/efectos de los fármacos,
Chlorocebus aethiops,
Vesículas Citoplasmáticas,
Enterotoxinas/farmacología,
Dosificación Letal Mediana,
Microscopía Electrónica de Rastreo,
Pruebas de Neutralización,
Plesiomonas/metabolismo,
Plesiomonas/patogenicidad,
Plesiomonas/ultraestructura,
Ríos/microbiología,
Células Vero,
Factores de Virulencia
