There are about 10004 clinical studies being (or have been) conducted in Brazil. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
Generalized aggressive periodontitis (GAP) is an inflammatory disease that causes the severe and rapid destruction of periodontal tissue. A relatively constant microbiological pattern, an altered inflammatory condition and familial aggregation of cases were described as important characteristics of this disease. In this vein, studies evaluating children of GAP patients were made and identified early microbiological and inflammatory alterations in this population, suggesting that these factors could favor the disease development. Thus, the aim of this project is to evaluate if the use of toothpaste with Triclosan could have a beneficial effect in control the microbiota and the inflammatory condition in children from parents with GAP, comparing them to children of periodontally healthy parents. 20 children (6-12 years old) from GAP parents and 20 children (6-12 years old) from periodontally healthy parents will be selected and will participate in a cross-over placebo study. All children will be included in a 15-day period of control of plaque to standardize the hygiene technique using only the placebo toothpaste. After this period, the children will be divided randomly into 4 groups: G1: Triclosan/health children; G2: Placebo/health children; G3: Triclosan/GAP children; G4: Placebo/GAP children and they will use the specific paste described for each group for 45 days. After this period, all children will repeat the 15 days interval, using only the placebo toothpaste, to remove the Triclosan effect and to standardize the oral hygiene again. Posteriorly, the crossing of groups will be done and children will be reallocated to change the used toothpaste. Thus, children that were in G1 will be reallocated in G2, children of G2 will be reallocated in G1, children of G3 will be in G4 and children of G4 will be in G3, staying in this new group for more 45 days. The evaluated periods will be baseline, 15 days, 30 days and 45 days while children stay in G1, G2, G3 or G4. In these periods children will be clinically evaluated for the periodontal parameter and sample collection of crevicular gingival fluid (GCF) and subgingival biofilm from incisors and molars will be done. Luminex/MAGpix technology will be used to detect IL-1β, IL-4, IL-6, IL-8, IL-10, IL-17, TNF-α, INF-γ in the GCF. The subgingival biofilm will be used to evaluate the Porphyromonas gingivalis, Tannerella forsythia, Aggregatibacter actinomycetemcomitans levels by real-time PCR.
Cardiac surgery is a recommended therapeutic option as a form of secondary prevention for the treatment of cardiovascular diseases, but may present postoperative alterations such as reduction of pulmonary volumes and flows, impairment in gas exchange and increase in the rate of pulmonary complications. The use of positive pressure may reduce these complications. Objective: To evaluate the efficacy of positive expiratory pressure (PEP) in the blow-bottle device compared to expiratory positive airway pressure (EPAP), both associated with conventional physiotherapy, and conventional physiotherapy in the pulmonary function in postoperative cardiac patients through a randomized clinical trial. Methods: The study was approved by the Research Ethics Committee of the Hospital de Clínicas of Porto Alegre (CAEE: 70213617.6.0000.5327). Patients undergoing cardiac surgery were randomized into three groups: positive expiratory pressure with blow-bottle device associated with conventional physiotherapy (G1), positive expiratory pressure in the airways with unidirectional valve associated with conventional physiotherapy (G2), and the third group only the conventional physiotherapy of HCPA cardiac intensive care unit (G3). Initially, an evaluation was performed through spirometry, manovacuometry, radiological changes in the preoperative period, prior to the interventions (immediate postoperative) and on the third postoperative day, immediately prior to cardiac intensive care unit discharge. Pulmonary complications were assessed on the third postoperative day, and length of stay (at the Intensive Care Unit and hospital) were recorded untill discharge.
Chronic obstructive pulmonary disease (COPD) is characterized by dyspnea, as well as musculoskeletal and systemic manifestations. Photobiomodulation therapy (PBMT) with use of low-level laser therapy (LLLT) and/or light emitting diode therapy (LEDT) is an electrophysical intervention that has been found to minimize or delay muscle fatigue. The aim of this study is to evaluate the acute effect of PBMT with combined use of lasers diodes, light emitting diodes (LEDs), on muscle performance, exercise tolerance and metabolic variables during the 6-minute stepper test (6MST) in patients with COPD. Twenty-one patients with COPD will completed the 6MST protocol over 2 weeks, with 1 session per week. PBMT or placebo (PL) will be performed before each 6MST (17 sites on each lower limb, with a dose of 30 J per site, using a cluster of 12 diodes: 4 × 905 nm super-pulsed laser diodes, 4 × 875 nm infrared LEDs, and 4 × 640 nm red LEDs; Multi Radiance Medical™, Solon - OH, USA). Patients will be randomized into two groups before the test according to the treatment they will receive. Assessments will be performed before the start of each protocol. The primary outcomes are oxygen uptake and number of steps, and the secondary outcome are perceived exertion (dyspnea and fatigue in the lower limbs).
To evaluated the clinical performance of composite resin restorations, considering also the evaluation of release of resin components into saliva and the presence cytokines in gingival fluid. Restorative system FL-Bond II (self-etching adhesive system)/ beautifil II (composite restorative) were use. For in vitro assays, adhesive and resin specimens are being preparing for assessing the monomers degree of conversion (by FTIR), sorption and solubility and release of resinous components in ethanol and Ringer solutions (through a gas chromatography and mass spectroscopy - GC-MS). In the longitudinal clinical study clinical performance of restorations and periodontal response were evaluate.
The aim of this study was to evaluate the effect of nanohydroxyapatite associated with low potency laser therapy in eliminating or reducing dentin hypersensitivity in a randomized placebo-controlled clinical trial. Volunteers 18 to 50 years old with hypersensitive teeth were randomized into 4 groups: GPLACEBO - positioning of the laser tip without light emission + placebo dentifrice; GnHAP - positioning of the laser tip without light emission + nano-hydroxyapatite; GLASER - laser tip positioning with light emission + placebo substance; GLASERnHAP - positioning by laser beam with light emission + nano-hydroxyapatite.
The purpose of this study is to provide critical information on the safety, reactogenicity and immunogenicity profile of the investigational recombinant chimpanzee adenovirus Type 155-vectored RSV (ChAd155-RSV) vaccine in infants likely to be unexposed to RSV and will assess a single lower dose and a higher two dose regimen, before moving to future studies. This study will also assess if there is a risk of 'vaccine-induced enhanced RSV disease' after vaccination of these infants with the ChAd155-RSV vaccine.
The purpose of the study is to test the effectiveness (how well the drug works), safety, and tolerability of the investigational drug called NKTR-214, when combined with nivolumab versus nivolumab given alone in participants with previously untreated melanoma skin cancer that is either unable to be surgically removed or has spread
Approximately 50% of coronary events occur in previously asymptomatic patients. Thus, the early detection of the individuals at higher risk became an important research target within the current cardiology. The various clinical scores used present a predictive accuracy for ischemic events, evaluated by the ROC curve, which ranges from 0.73 to 0, 79. Therefore, the introduction of new non-invasive techniques for the detection of atherosclerosis aims to allow a more adequate classification of risk. The development of radiological techniques, fundamentally coronary angiotomography of multiple detectors (CAMD) and electron beam computed tomography-EBCT‖, demonstrated that the degree of coronary calcification correlates with endothelial lesion and individual prognosis in the long term. Notably, the calcium score has a weak correlation with the severity of coronary stenosis per se, possibly due to variations in arterial remodeling due to coronary calcification. On the other hand, the CAMD allows the detection of a small magnitude atheromatous disease, not diagnosed clinically, nor by tests provoking ischemia, or even by coronary catheterization. The clinical relevance of the small magnitude atheromatous disease diagnosed by the ACMD and its correlation with plaque vulnerability markers, mainly platelet aggregation, vascular reactivity, and inflammation are still not well determined. This is a case and control study and we will enrolled 90 patients with low and medium risk of cardiovascular event whose cases should present discrete plaques in the CAMD e controls should present none plaque in coronary stenosis
The hyperinflation ventilator was performed in different modalities and ventilatory adjustments, with total pressure of 40cmH2O. The inspiratory volume, inspiratory time, mean airway pressure, inspiratory and expiratory flow, and bias flow were evaluated.
Olanzapine has been used as prophylactic antiemetic for chemotherapy induced nausea and vomiting. The project aims to evaluate the efficacy of olanzapine in combination with ondansetron and dexamethasone in patients at high risk of postoperative nausea and vomiting, with previous history of nausea and vomiting induced by prior chemotherapy, submitted to medium and large surgery.