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.
In recent years, photobiomodulation has been studied as a means of increasing muscle performance in athletes and healthy individuals. This is possible due to the physiological changes that photobiomodulation therapy can promote. Moreover, given a large number of existing studies on the subject, some directions for future research have been established. For example, future research was established, the relationship between power and time because with high power, it will achieve the same energy with shorter application times. However, irradiation may not be offered for the minimum recommended time. Therefore, this study aims to compare different powers and, consequently, different application times for muscle performance in healthy individuals. For this, 42 participants will be recruited, males between 18 to 40 years old, without recent musculoskeletal injury or cardiorespiratory problems. The participants will participate in 3 evaluations containing functional and physiological variables and ten training sessions of lower limbs with previous photobiomodulation therapy application, comparing devices with a power of 0.864W and 1.864W. 0.864W and 1.2W. Lower limbs training will be composed of stiff and squat exercises twice a week, for five weeks. In the pre- and post-intervention evaluations, the following parameters will be evaluated isokinetic apparatus, body composition, and functionality of the vertical jump. For data analysis, we will use a normality test to verify the distribution and statistical tests will be used for intra and intra and intergroup comparisons, considering two factors in the comparisons time and group. A significance level of 5% will be adopted.
The study aims to evaluate the safety and efficacy of a 2 drugs ART regimen (lamivudine plus dolutegravir) for prevention of mother to child transmission in pregnant women with HIV. 20 pregnant women will be enrolled in this proof of concept protocol. They will be prescribed DTG-3TC (fixed-dose combination), and will be followed up to the end of gestation. Initially, a total of 10 pregnant women will be recruited for the first phase of the study. Once the first phase is successfully completed, 10 additional participants will be included in a second step.
This clinical study is aimed at investigating the effects of transcranial direct current stimulation (tDCS) on COVID-19 patients not admitted to the intensive care unit. The tDCS is a non-invasive brain stimulation technique which applies a low intensity electrical current in order to modulate neuronal activity. Patients included will be submitted to a single session with active or sham tDCS, aiming to modulate prefrontal or supplementary motor area (SMA). Evaluation protocol will be performed before and after stimulation to verify the incidence of adverse events related to treatment and whether tDCS would affect measures of executive functioning, mood, anxiety, autonomic response and motor function in COVID-19 patients. We hypothesize the neuromodulation would be a safety, promising treatment to reduce possible impairments in COVID-19 patients.
The RECOVER SUS-BRASIL network, made up of excellent academic and research institutions, was formed in response to the emergence of unprecedented public health related to SARS-CoV-2. The Network's objectives are the production of scientific knowledge, the technical and scientific strengthening of participating centers, the sharing of information and experiences with other assistance services and the generation of evidence for public health policies in Brazil. The present proposal aims to increase the magnitude of the Network, proposing two studies to assess the epidemic of COVID-19 in Brazil. The first study deals with the establishment of a prospective cohort of patients hospitalized for COVID-19. Through using standardized data collection procedures, biological samples and biomarkers, this study will be able to describe clinical presentation, severity, risk factors for worsening of the disease. Multiple clinical outcomes of severity of disease, organ dysfunction, hospital mortality, length of hospital stay, hospital readmission and early post-discharge death. Will be biomarkers of inflammation, cellular and humoral immunity were also evaluated to study their association with clinical outcomes, variability of SARS-CoV-2 and the development of immunity in infected individuals through the detection and titration of neutralizing antibodies anti-SARS-CoV-2. The second study 2 will evaluate the COVID-19 epidemic in people living with HIV / AIDS, using SUS databases, such as SIM, SICLOM and SISCEL. This study is particularly relevant since on the one hand it includes a population potentially at greater risk of developing severe forms of the disease, given their underlying condition, as, on the other hand, they are exposed chronically to drugs that could potentially have an effect on SARS-CoV-2. Finally, a major objective of RECOVER SUS-BRASIL is integrate technical and scientific capacities generating scientific production of high relevance and impact and strengthening health and science throughout the country.
This is a randomized study that sought to analyze the diagnostic accuracy of the telemedicine consultation of patients suspected of respiratory tract infections during COVID-19 pandemic in comparison with the face-to-face evaluation at the emergency department.
Bladder cancer (BC) is one of the most common cancers worldwide and the most successful example of vaccine in cancer treatment, representing an efficient model for studying the importance of systemic and local immune mechanisms. Despite being the standard of treatment for the last 40 years, the exact mode of action of immunotherapy with the bacillus Calmette-Guérin (BCG) is still poorly defined. In a mechanistic study, the investigators intend to prospectively investigate immunological signatures, including immune-checkpoints, pre and post-treatment in patients with BC, and correlate the cytokines of the immune by-product and BCG administration pathway to understand the independent contributions of BCG priming (prior exposure to BCG) and crosstalk immunotherapy between tumor profiles and immune response of the patient. The proposed research strategy is justified by the need to identify subsets of patients who better respond to an intervention, or to predict why new immunotherapies and drugs may be successful or failed in clinical trials.
This placebo controlled study is intended to generate safety and efficacy data in order to provide a treatment option for COVID-19 in patients with a high risk of disease progression based on age or co-morbid medical conditions.
The long and very long stents, although they represent a greater navigability challenge, especially in tortuous and calcified coronary arteries, they have the advantage of providing shorter procedural time, with less contrast use, less exposure to radiation, lower cost, lower risk of occlusion of lateral branches, as well as less interference in the local flow. However, in the context of the use of such long stents, as some vessels have a tapering shape, with a progressively smaller diameter in their more distal segments (as is the typical case of the left anterior descending artery), a significant disproportion (mismatch) of vessel size between the proximal and distal landing zone of the stent can be noted. Such disproportion may lead to the underestimation of the proximal reference or overestimation of the distal reference diameter of the vessel, generating an increase of the stress on the vessel wall, with consequent increase in the risk of restenosis. In view of this situation, long or very long stents were developed in a tapered shape, with progressive reduction of their diameter between their proximal and distal portion, respecting the phenomenon of tapering of the coronary artery during the treatment of very long lesions.Some of these stents also have a hybrid design, with closed cells at the ends and open cells in the middle, allowing a more efficient expansion in their middle portion (thus avoiding the dog-boning phenomenon). However, there is still a lack of studies in the literature evaluating whether these DES in a tapered shape and hybrid cells may effectively heal over time, specially with respect to strut covering and strut malapposition. Thus, this is a prospective, single-arm, open-label study, including patients presenting at least one long or very long lesion (≥ 30 mm), who will undergo angioplasty with a tapered DES. The objective is to analyze the neointimal healing as well as other data on the efficacy and safety of the tapered DES Biomime Morph in patients with long or very long lesions.
Comorbidities associated with severe obesity determine an important public health problem. Few methods are considered potentially effective for the treatment of severe obesity and the clinical relevance of bariatric surgery is growing, as well as the number of procedures performed. The insertion of the physiotherapist in the multiprofessional team responsible for performing the surgical procedure is essential from the preoperative screening and evaluation to the prevention and treatment of postoperative complications. Therefore, the physiopathological aspects involved with severe obesity, the technical aspects and risks of the surgical procedure, as well as the physiotherapeutic techniques that have scientific proof must be known by the physiotherapist responsible for the surgical follow-up of the patient. In this context, the use of non-invasive ventilation (NIV) in the postoperative period of bariatric surgery has ample therapeutic potential. The present research project aims to evaluate the immediate prophylactic use of NIV on the respiratory and functional recovery of the patients.
The purpose of this study is to learn whether having the AMP Study antibody (called VRC01) in a person's body might help their immune system control HIV better, even without HIV medication called antiretroviral therapy or ART, if they get HIV. This study will evaluate the viral and immune system responses in an Analytical Treatment Interruption (ATI), in participants who received VRC01 or placebo and got HIV while enrolled in HVTN 704/HPTN 085 (NCT02716675). Participants in this study will stop taking their HIV medication. They will stay off HIV medication unless and until the HIV levels in their blood show that their immune system is unable to control the HIV or they meet other ART re-start criteria as noted in section "Detailed Description". While they are not taking HIV medication, their HIV levels will be tested frequently, and their health will be monitored closely. This is called an analytical treatment interruption, or an ATI. An ATI is an experimental procedure that is only used in carefully monitored research.