Results: 125

Viral hepatitis in female sex workers using the Respondent-Driven Sampling

ABSTRACT OBJECTIVE To estimate the prevalence of hepatitis B virus and C virus infections and their genotypes and analyze the risk factors for the markers of exposure to hepatitis B virus in female sex workers in a region of intense sex trade. METHODS This is a cross-sectional study performed with four...

Influence of Treg cells and HBV genotype on sustained response and drug resistance in the treatment with nucleoside drugs

Braz. j. med. biol. res; 50 (3), 2017
We aimed to investigate the influence of regulatory T cells including CD4+CD25+, CD8+CD28- and hepatitis B virus (HBV) genotype on sustained virological response and tolerance of nucleoside drugs. One hundred and thirty-seven patients were enrolled. Lamivudine was administered to 84 patients. Entecavir w...

Serum microRNA-30c levels are correlated with disease progression in Xinjiang Uygur patients with chronic hepatitis B

Braz. j. med. biol. res; 50 (6), 2017
We aimed to investigate the potential role and mechanism of microRNA-30c (miR-30c) in the pathological development of chronic hepatitis B (CHB). The serum levels of miR-30c in hepatitis B virus (HBV) carrier Xinjiang Uygur patients with inactive, low-replicative, high-replicative and HBe antigen-positive...

Prevalence, risk factors and hepatitis B immunization: helping fill the gap on hepatitis B epidemiology among homeless people, Goiânia, Central Brazil

Data are limited in Brazil on hepatitis B infection among homeless individuals, a marginalized population with high risk of sexually transmissible infections (STI), including hepatitis B. The aim of this study was to investigate hepatitis B epidemiology in homeless persons lodged in a public shelter in G...

Evolution of hepatitis B serological markers in HIV coinfected patients: a case study

Rev. saúde pública; 51 (), 2017
ABSTRACT OBJECTIVE To describe the evolution of serological markers among HIV and hepatitis B coinfected patients, with emphasis on evaluating the reactivation or seroreversion of these markers. METHODS The study population consisted of patients met in an AIDS Outpatient Clinic in São Paulo State, B...

Frecuencia del virus de la hepatitis B (HBV) en estudiantes universitarios de la ciudad de Corrientes, Argentina
Frequency of hepatitis B virus (HBV) in university students in the city of Corrientes, Argentina

El virus de la hepatitis B (HBV) presenta amplia distribución en todo el mundo, con más de 500 millones de individuos infectados. Este microorganismo pertenece a la familia Hepadnaviridae. En el presente trabajo se analizó la presencia del antígeno de superficie del virus (HBsAg) y perfil enzimático...

Infección oculta por el virus de la hepatitis B en pacientes sometidos a trasplante hepático

Introducción: la infección oculta por el virus de la hepatitis B (VHB) se caracteriza por la presencia del genoma viral en suero y/o tejido hepático de individuos negativos para el antígeno de superficie HBsAg. La infección oculta se ha asociado con el desarrollo de cirrosis y carcinoma hepatocelula...

In-house quantitative real-time PCR for the diagnosis of hepatitis B virus and hepatitis C virus infections

Braz. j. microbiol; 47 (4), 2016
Abstract The quantification of viral nucleic acids in serum by real-time PCR plays an important role in diagnosing hepatitis B virus and hepatitis C virus infection. In this study, we developed an assay using specific primers and probes to quantify hepatitis B virus DNA or hepatitis C virus RNA in serum ...

An original method for producing acetaldehyde and diacetyl by yeast fermentation

Braz. j. microbiol; 47 (4), 2016
Abstract In this study a natural culture medium that mimics the synthetic yeast peptone glucose medium used for yeast fermentations was designed to screen and select yeasts capable of producing high levels of diacetyl and acetaldehyde. The presence of whey powder and sodium citrate in the medium along wi...

Infección oculta por el virus de la hepatitis B en pacientes hemodializados cubanos
Occult hepatitis B virus infection in hemodialysis patients

Rev. cuba. med. trop; 68 (3), 2016
Introducción: la infección oculta por el virus de la hepatitis B se caracteriza por la presencia en suero o plasma del genoma viral y anticuerpos contra la proteína de la cápsida (anti-HBc) en ausencia del marcador de infección.Objetivos: detectar la IOB en los pacientes hemodializados e identificar...