Results: 1740

Effect of microRNA-21 on the proliferation of human degenerated nucleus pulposus by targeting programmed cell death 4

Braz. j. med. biol. res; 49 (6), 2016
This study aims to explore the effect of microRNA-21 (miR-21) on the proliferation of human degenerated nucleus pulposus (NP) by targeting programmed cell death 4 (PDCD4) tumor suppressor. NP tissues were collected from 20 intervertebral disc degeneration (IDD) patients, and from 5 patients with traumati...

Impact of chronic administration of anabolic androgenic steroids and taurine on blood pressure in rats

Braz. j. med. biol. res; 49 (6), 2016
Supraphysiological administration of anabolic androgenic steroids has been linked to increased blood pressure. The widely distributed amino acid taurine seems to be an effective depressor agent in drug-induced hypertension. The purpose of this study was to assess the impact of chronic high dose administr...

Low vaspin levels are related to endothelial dysfunction in patients with ankylosing spondylitis

Braz. j. med. biol. res; 49 (7), 2016
Vaspin is a novel adipocytokine associated with glucose tolerance and chronic inflammation. Some studies reveal that vaspin may be involved in cardiovascular diseases. Our objective was to investigate the relationship between serum vaspin levels and endothelial function in patients with ankylosing spondy...

Age-related changes in the Brazilian woman's smile

Braz. oral res. (Online); 30 (1), 2016
Abstract The aim of this research was to evaluate age-related changes in the smile of Brazilian women. The sample consisted of 249 Brazilian women who had not undergone previous orthodontic treatment or facial surgery. They were divided into four groups, according to age: G1 (20-29), G2 (30-39), G3 (40-4...

Does a toothpaste containing blue covarine have any effect on bleached teeth? An in vitro, randomized and blinded study

Braz. oral res. (Online); 30 (1), 2016
Abstract The objective of this study was to analyze the effect of bleaching toothpastes, both conventional and those containing the new whitening agent Blue Covarine, on teeth previously bleached by conventional techniques (in-office and at-home). Squared bovine enamel/dentin blocks (6.0 x 6.0 x 2.0 mm) ...

The effect of standardised implantoplasty protocol on titanium surface roughness: an in-vitro study

Braz. oral res. (Online); 30 (1), 2016
Abstract: To analyse the changes of surface characteristics of machined and moderately roughened titanium disks following a standardised implantoplasty protocol. Forty titanium discs (machined: n = 20; moderately roughened: n = 20) were instrumented with one half of each disc maintained as the control (n...

Influence of different fillers on the properties of an experimental vinyl polysiloxane

Braz. oral res. (Online); 30 (1), 2016
Abstract The aim of the study was to evaluate the effect of the incorporation of different fillers on an experimental vinyl polysiloxane (VPS) at two different concentrations, 20% and 40%. Different fillers were added to an experimental VPS. The study was developed in two stages: (i) incorporation of fil...

Thickness and nanomechanical properties of protective layer formed by TiF4 varnish on enamel after erosion

Braz. oral res. (Online); 30 (1), 2016
Abstract The layer formed by fluoride compounds on tooth surface is important to protect the underlying enamel from erosion. However, there is no investigation into the properties of protective layer formed by NaF and TiF4 varnishes on eroded enamel. This study aimed to evaluate the thickness, topography...

Relationship between hypertension and periapical lesion: an in vitro and in vivo study

Braz. oral res. (Online); 30 (1), 2016
Abstract The aim of this study was to compare potential aspects of periapical lesion formation in hypertensive and normotensive conditions using hypertensive (BPH/2J) and wild-type control (BPN/3J) mice. The mandibular first molars of both strains had their dental pulp exposed. At day 21 the mice were eu...

The effect of smoking on myeloid-related protein-8 and myeloid-related protein-14

Braz. oral res. (Online); 30 (1), 2016
Abstract The aim of this study was to determine the myeloid-related protein-8 and myeloid-related protein-14 levels in the gingival crevicular fluid of smoker patients with generalized aggressive periodontitis (SAgP), smoker patients with chronic periodontitis (SCP), smoker patients with gingivitis (SG-s...