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.
Background: Photobiomodulation therapy (PBMT) has become an adjuvant therapeutic possibility in body remodeling procedures. Although this modality emerged in 1960, there are still few studies that demonstrate the real mechanism of action and possible interaction with subcutaneous fatty tissue. Given this scenario, this study was proposed with the aim of evaluating the effects of PBMT to Light Emitting Diode (LED) associating the red (630 nm) and infrared (850 nm) wavelengths in the subcutaneous fatty tissue. Methods: This is a non-randomized controlled study of comparative intervention that evaluated a sample of subcutaneous fatty tissue from women with grade II obesity. The participants received the LED PBMT treatment with associated red and infrared wavelengths sequentially on the left side of the abdomen and the right side was considered as control, with the collection of biological material performed at the time of bariatric surgery. For histological and immunohistochemical evaluation, Caspase 3, Cleaved Caspase 3, CD68+, HSL and adipophilin markers were used.
The PJS-539 is a multicentre, phase 2, randomized, double-blind, placebo-controlled clinical trial to evaluate the effect of PJS-539 in the viral load of patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
The purpose of this study is to evaluate the function of the adjustment procedure with the Spatz4 in subjects with a BMI ≥ 27. Up to 66 eligible subjects will undergo endoscopy and those without endoscopic contraindications will be implanted with the Spatz4 balloon. All subjects will follow a calorie restricted diet designed by the dietician. An up adjustment will be performed at 16 weeks (±2 weeks). The subjects will be followed for 2 weeks after the up adjustment procedure, after which the study ends. Subjects will be given the option to continue the implantation period until 52 weeks.
The primary purpose of this study is to assess the safety, reactogenicity, and humoral immune response of Ad26.COV2.S administered intramuscularly (IM) as a 1-dose schedule or as a 2-dose schedule (56-day interval) in adolescents.
This is an early feasibility study to evaluate the device functionality of an open-field handheld wireless fluorecence imaging system for detection of sentinel lymph nodes in women with cervical and uterine cancers who underwent open surgery.
NDV-HXP-S is an inactivated COVID-19 vectored-vaccine virus using the Newcastle Disease Virus as basis and expressing S protein from SARS-CoV-2 stabilized in pre-fusion form with Hexapro technology. This vaccine was successfully tested in non-clinical study with a good safety profile and eliciting neutralizing antibodies against SARS-CoV-2. Clinical testing is conducted by an international consortium including three different manufacturers. Butantan, in Brazil, is one of them.
Researchers are looking to learn more about future menstrual bleeding in women who have started using intrauterine contraception methods. "Intrauterine contraception" means that a device is inserted into a woman's uterus by her doctor. The device then releases a birth control treatment into the uterus. Researchers have found that when women use intrauterine contraception, its effects on the menstrual cycle can cause changes to how often and for how long women will bleed. This is one of reasons women may stop using their intrauterine contraception. So, the researchers in this study wanted to learn about a tool that can be used to predict future bleeding events. This tool was developed based on the results of previous clinical studies that researched menstrual bleeding. This tool is a smartphone application called MyIUS. This study will include about 3,000 women who have recently had intrauterine contraception inserted and who use the MyIUS app. There will be no visits with a study doctor in this study. After the intrauterine contraception has been inserted, the women will start to record any events of bleeding in the MyIUS app. After they have recorded events of bleeding for a total of 90 days, the MyIUS app will give a prediction of menstrual bleeding expected for the next 180 days. The women who sign the electronic informed consent form will continue to record their bleeding events for a total of 6 months. The researchers will then collect this information. They will use this information to find out how well the MyIUS app can predict future menstrual bleeding.
This study aims to evaluate the effects of beetroot juice supplements on lower-limb strength and muscular endurance in physically active women, due to the presence of NO3- in beetroot juice.
Statins are part of one of the largest groups of drugs prescribed worldwide used in the treatment of dyslipidemia. Despite the good therapeutic results of statins and their good tolerance on the part of patients, some adverse effects may occur during treatment. In skeletal muscle, statins can lead to mitochondrial dysfunction characterized by decreased adenosine triphosphate production, decreased oxidative phosphorylation capacity, increased concentration of reactive oxygen species, and decreased mitochondrial biogenesis. Cardiorespiratory fitness is a physiological indicator that corresponds to the integration of the cardiovascular, pulmonary, muscular, and cellular (mitochondria) systems in capturing, transporting and using oxygen, commonly expressed as the maximum oxygen consumption. Several studies show a strong association of lower cardiorespiratory capacity with an increased risk of mortality from cardiovascular disease and mortality from all causes. Combining the use of statins with lifestyle changes has been suggested in many medical guidelines. Physical exercise plays a fundamental role in improving cardiorespiratory fitness and controlling dyslipidemia. However, some studies suggest that the association of statin with physical training can negatively influence the adaptation and improvement of cardiorespiratory capacity. On the other hand, some studies show that the combination of statin and physical exercise does not negatively interfere with the maximum oxygen consumption. To determine the impact of statins on cardiorespiratory fitness and adaptation to physical exercise, the investigators will use the database of the Cardiovascular Rehabilitation and Exercise Physiology Department at Heart Institute (Sao Paulo, Brazil), which currently has 33,804 maximal cardiopulmonary exercise tests. This large database, which is the gold standard of cardiorespiratory capacity (maximum oxygen consumption), will be used retrospectively with relevant information and a huge number of participants. Therefore, the aim of this study will be to explore a large database to assess the effect of the use of statins and their relationship with cardiorespiratory capacity in physically active and sedentary individuals (with and without heart failure).
This is a randomised, double-blind, placebo-controlled, multi-center sequential phase 2b and Phase 3 study to evaluate the efficacy and safety of AZD4831 administered for up to 48 Weeks in participants with heart failure with left ventricular ejection fraction > 40%. The study will consist of 2 separate parts, Part A and Part B, approximately 660 participants will be randomised in Part A, 820 in Part B.