Results: 3275

One-year aging effects on microtensile bond strengths of composite and repairs with different surface treatments

Abstract The present study aimed to evaluate effects of different surface treatments and aging of composite cylinders on bond strength of composite resin repair. Thirty-two composite cylinders were produced and divided into four groups according to type of surface treatment and storage time of composite ...

Effect of final irrigation protocols on microhardness reduction and erosion of root canal dentin

Abstract This study aimed to evaluate the effect of final irrigation protocols on microhardness reduction and erosion of root canal dentin. Sixty root canals from mandibular incisors were instrumented and randomly divided into six groups (n = 10) according to the irrigant used: QMiX, 17% EDTA, 10% citric...

Influence of solvents on the bond strength of resin sealer to intraradicular dentin after retreatment

Abstract This study evaluated the removal of filling material with ProTaper Universal Rotary Retreatment system (PTR) combined with solvents and the influence of solvents on the bond strength (PBS) of sealer to intraradicular dentin after canal reobturation. Roots were endodontically treated and distribu...

Absorption mechanism of three curcumin constituents through in situ intestinal perfusion method

Braz. j. med. biol. res; 50 (11), 2017
This study aimed to investigate the absorption mechanism of three curcumin constituents in rat small intestines. Self-emulsification was used to solubilize the three curcumin constituents, and the rat in situ intestinal perfusion method was used to study factors on drug absorption, including drug mass co...

Protective effects of deferasirox and N-acetyl-L-cysteine on iron overload-injured bone marrow

Braz. j. med. biol. res; 50 (12), 2017
Using an iron overload mouse model, we explored the protective effect of deferasirox (DFX) and N-acetyl-L-cysteine (NAC) on injured bone marrow hematopoietic stem/progenitor cells (HSPC) induced by iron overload. Mice were intraperitoneally injected with 25 mg iron dextran every 3 days for 4 weeks to est...

Myostatin promotes distinct responses on protein metabolism of skeletal and cardiac muscle fibers of rodents

Braz. j. med. biol. res; 50 (12), 2017
Myostatin is a novel negative regulator of skeletal muscle mass. Myostatin expression is also found in heart in a much less extent, but it can be upregulated in pathological conditions, such as heart failure. Myostatin may be involved in inhibiting protein synthesis and/or increasing protein degradation ...

Noninvasive intracranial pressure monitoring for HIV-associated cryptococcal meningitis

Braz. j. med. biol. res; 50 (9), 2017
Mortality and adverse neurologic sequelae from HIV-associated cryptococcal meningitis (HIV-CM) remains high due to raised intracranial pressure (ICP) complications. Cerebrospinal fluid (CSF) high opening pressure occurs in more than 50% of HIV-CM patients. Repeated lumbar puncture with CSF drainage and e...

Perceived Stress Scale: confirmatory factor analysis of the PSS14 and PSS10 versions in two samples of pregnant women from the BRISA cohort

This study aimed to assess the dimensional structure, reliability, convergent validity, discriminant validity, and scalability of the Perceived Stress Scale (PSS). The sample consisted of 1,447 pregnant women in São Luís (Maranhão State) and 1,400 in Ribeirão Preto (São Paulo State), Brazil. The 14 ...

Contribuições e desafios das práticas corporais e meditativas à promoção da saúde na rede pública de atenção primária do Município de São Paulo, Brasil

O artigo apresenta análise das contribuições e os desafios das práticas corporais e meditativas à promoção da saúde na rede pública de atenção primária. A pesquisa qualitativa foi desenvolvida em 16 unidades de saúde do Município de São Paulo, Brasil, por meio de entrevistas de 29 profissi...

Validação do modelo lógico teórico da vigilância alimentar e nutricional na atenção primária em saúde

Resumo: É objetivo deste trabalho descrever as etapas de desenvolvimento e os resultados do processo de validação do modelo lógico teórico da vigilância alimentar e nutricional na atenção primária à saúde (APS). Trata-se de um estudo descritivo e exploratório, no qual foram envolvidos vinte e...