Results: 55

Isolation and characterization of bacteria associated with silkworm gut under antibiotic-treated larval feeding

Braz. j. biol; 84 (), 2024
Abstract The impact of antibiotics on growth, cocoon production was assessed in addition to isolation and characterization of bacteria associated with silkworm gut of infected larvae. Larval rearing was maintained at recommended conditions of temperature and humidity. Silkworm larvae showing abnormal sym...

Isolation and screening of chromium resistant bacteria from industrial waste for bioremediation purposes

Braz. j. biol; 83 (), 2023
Abstract Chromium (VI) a highly toxic metal, a major constituent of industrial waste. It is continuously release in soil and water, causes environmental and health related issues, which is increasing public concern in developing countries like Pakistan. The basic aim of this study was isolation and scree...

Identification by molecular techniques of halophilic bacteria producing important enzymes from pristine area in Campeche, Mexico

Braz. j. biol; 83 (), 2023
Abstract Isla Arena is located in the coordinate 20° 70´ N - 90° 45´ W, from Campeche, Mexico. In these estuaries, the ocean mixes with fresh water, and ecosystems are concentrated where petenes and pink flamingos proliferate. Crustaceans and mollusks abound in the sea. Despite its enormous marine we...

Tertiary hospital sewage as reservoir of bacteria expressing MDR phenotype in Brazil

Braz. j. biol; 82 (), 2022
High doses of antibiotics used in hospitals can affect the microbial composition of sewers, selecting resistant bacteria. In this sense, we evaluated the antibiotic resistance profile and the multiresistant phenotype of bacteria isolated in sewage from a tertiary hospital in the interior São Paulo state...

Biodegradation of petroleum by bacteria isolated from fishes of Indian Ocean

Braz. j. biol; 82 (), 2022
In this study, oil degrading bacteria discovered from fish living near the oil ports at Karachi in Pakistan were characterized. The bacteria isolated from skin, gills, and gut in fish could consume crude oil as a source of carbon and energy. Total 36 isolates were tested using Nutrient Agar (NA) and MSA ...

Bacterial diversity in high Andean grassland soils disturbed with Lepidium meyenii crops evaluated by metagenomics

Braz. j. biol; 82 (), 2022
Soil quality is usually determined by its physical-chemical characteristics without taking into account the bacterial communities that play a fundamental role in the chemical decomposition of plant nutrients. In this context, the objective of the study was to evaluate bacterial diversity in high Andean g...

Influencia de un panel molecular de reacción de polimerasa en cadena múltiple en el diagnóstico o descarte de neumonía asociada a ventilación mecánica en una cohorte chilena de pacientes críticos con COVID-19

Rev. chil. infectol; 39 (4), 2022
INTRODUCCIÓN: La neumonía asociada a ventilación mecánica (NAVM) es frecuente en pacientes críticos con COVID-19. Su diagnóstico precoz es fundamental para su pronóstico. OBJETIVO: Demostrar la utilidad del panel FilmArray Pneumo (PFA-P) en la confirmación o descarte de NAVM en estos pacientes. M...

A novel gene from the acidophilic bacterium Leptospirillum sp. CF-1 and its role in oxidative stress and chromate tolerance

Biol. Res; 55 (), 2022
BACKGROUND: Acidophilic microorganisms like Leptospirillum sp. CF 1 thrive in environments with extremely low pH and high concentrations of dissolved heavy metals that can induce the generation of reactive oxygen species (ROS). Several hypothetical genes and proteins from Leptospirillum sp. CF 1 are know...

Characterization of metal(loid)s and antibiotic resistance in bacteria of human gut microbiota from chronic kidney disease subjects

Biol. Res; 55 (), 2022
BACKGROUND: Human Gut Microbiota (HGM) is composed of more than one thousand species, playing an important role in the health status of individuals. Dysbiosis (an HGM imbalance) is augmented as chronic kidney disease (CKD) progresses, as loss of kidney function accelerates. Increased antibiotic use in CK...

Optimized broad-range real-time PCR-based method for bacterial screening of platelet concentrates

Braz. j. biol; 81 (3), 2021
Abstract Bacterial contamination of blood components remains a major challenge in transfusion medicine, particularly, platelet concentrates (PCs) due to the storage conditions that support bacterial proliferation. In this study, we develop a rapid, sensitive and specific real-time PCR protocol for bacter...