Results: 3204

The virulence of Streptococcus pneumoniae partially depends on dprA

Braz. j. microbiol; 48 (2), 2017
Abstract Streptococcus pneumoniae is one of the most frequent opportunistic pathogens worldwide. DNA processing protein A (DprA) is an important factor involved in bacterial uptake and DNA integration into bacterial genome, but its role in S. pneumoniae virulence remains unclear. The aim of this study wa...

Frequency of indeterminate results from an interferon-gamma release assay among HIV-infected individuals

J. bras. pneumol; 43 (3), 2017
ABSTRACT Objective: To evaluate the frequency of and factors associated with indeterminate interferon-gamma release assay (IGRA) results in people living with HIV/AIDS (PLWHA). Methods: We tested 81 PLWHA in the central-west region of Brazil, using the tuberculin skin test and an IGRA. Information on s...

Rickettsia amblyommii associado a roedores e marsupiais nativos da Estação Experimental Rafael Fernandes da UFERSA, Rio Grande do Norte

Pesqui. vet. bras; 37 (6), 2017
O presente estudo teve como objetivo registrar a ocorrência de Rickettsia sp. em roedores e marsupiais nativos da Estação Experimental Rafael Fernandes da UFERSA, Mossoró/RN. O trabalho consistiu em uma pesquisa de campo, com roedores e marsupiais silvestres, com os dados expressos em frequência sim...

Prevalence of small intestine bacterial overgrowth in patients with gastrointestinal symptoms

Arq. gastroenterol; 54 (2), 2017
ABSTRACT BACKGROUND Small intestine bacterial overgrowth is a heterogeneous syndrome characterized by an increase in the number and/or the presence of atypical microbiota in the small intestine. The symptoms of small intestine bacterial overgrowth are unspecific, encompassing abdominal pain/distension, ...

Ex vivo model of rabbit intestinal epithelium applied to the study of colonization by enteroaggregative escherichia coli

Arq. gastroenterol; 54 (2), 2017
ABSTRACT BACKGROUND The diarrheal syndrome is considered a serious public health problem all over the world and is considered a major cause of morbidity and mortality in developing countries. The high incidence of enteroaggregative Escherichia coli in diarrheal syndromes classified as an emerging patho...

Effects of probiotic intake on intestinal bifidobacteria of celiac patients

Arq. gastroenterol; 54 (2), 2017
ABSTRACT BACKGROUND Healthy individuals exhibit a significantly higher concentration of faecal bifidobacteria in comparison to celiac patients. Even though there are potential benefits in probiotic usage, they have been little explored as an adjunctive therapy in celiac disease. OBJECTIVE This study ai...

Characterization of biofilm formation, antimicrobial resistance, and staphylococcal cassette chromosome mec analysis of methicillin resistant Staphylococcus hominis from blood cultures of children

Abstract INTRODUCTION: Methicillin resistant Staphylococcus hominis (MRSHo) has been recognized as an important human pathogen, particularly in immunocompromised patients. METHODS: A total of 19 S. hominis isolates were collected from children at the Children's Medical Centre, Tehran, Iran, from Marc...

Molecular detection of β-lactamase and integron genes in clinical strains of Klebsiella pneumoniae by multiplex polymerase chain reaction

Abstract INTRODUCTION: Infections caused by β-lactamase-producing gram-negative bacteria, such as Klebsiella pneumoniae, are increasing globally with high morbidity and mortality. The aim of the current study was to determine antimicrobial susceptibility patterns and the prevalence of antibiotic r...

Molecular and serological characterization of Leptospira kirschneri serogroup Pomona isolated from a human case in a Brazilian rural area

Abstract INTRODUCTION: Leptospirosis is an important health concern in Brazil. Currently, information on the epidemiology of the disease in the rural areas of the country is lacking. METHODS: Serological and molecular techniques were used to characterize a clinical isolate of Leptospira. RESULTS: T...