There are about 173942 clinical studies being (or have been) conducted in United States. 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.
The anticaries effect of fluoride is through the increase in fluoride presence and retention in the oral fluids, reducing dental demineralization and enhancing remineralization. Previous studies showed that a preapplication of calcium (in a rinse) prior to administration of fluoride greatly enhances fluoride concentration in the mouth and the anticaries effect of fluoride. The hypothesis of this study is that the same can be achieved by chewing a calcium supplement prior to a fluoride rinse. The first goal is to determine if chewing these calcium supplements will increase calcium concentration in the oral fluids above baseline levels. Secondly, the calcium supplement with the highest calcium release will be tested before a fluoride rinse to assess the increased retention of fluoride in the oral fluids when compared with the fluoride rinse alone. In both parts, healthy volunteers will participate and saliva will be collected to assess calcium and fluoride concentration.
The objectives of this study are: - To evaluate the efficacy of Nyxol to expedite the reversal of pharmacologically-induced mydriasis across multiple mydriatic agents with an emphasis on phenylephrine - To evaluate the efficacy of Nyxol to return subjects to baseline accommodation after worsening (with cycloplegic agents tropicamide and Paremyd) - To evaluate the safety of Nyxol - To evaluate any additional benefits of the reversal of pharmacologically-induced mydriasis
The purpose of this study is to evaluate the efficacy, safety, and tolerability of pradigastat 20 and 40 mg as compared to placebo in patients with Functional Constipation.
Cystic fibrosis (CF) affects men and women equally, but after the onset of puberty, women with CF have a lower life expectancy than men with CF. Despite these known differences, the link between CF symptom trends and the menstrual cycle remains critically understudied. To address this gap, this study will investigate changes in CF-specific symptoms among women with CF to evaluate whether and how they correlate with their menstrual cycle. Specifically, the investigators hope to examine whether CF-related symptoms change throughout the menstrual cycle, what the impact of those symptoms is on quality of life, and how feasible it is to use a period tracking app to track CF-related symptoms throughout the menstrual cycle. Investigators are asking women ages 18-45 with CF, who have regular menstrual cycles, to participate. Study procedures, including online surveys, period tracking, and interview, will take approximately 3 months.
This study aims to collect feedback from hydrophilic intermittent catheter end-users to assess user acceptance of the test hydrophilic intermittent catheter and generate evidence to support commercial marketing objectives.
This exploratory, randomized, open label study aims to explore the safety, tolerability, pharmacokinetics, and effects of increasing intake amounts of two novel glycans on the gut microbiota of healthy subjects.
This is a collaborative study between Icahn School of Medicine at Mount Sinai, Boehringer Ingelheim Pharmaceuticals and up to 9 other clinical centers across the US to determine the effect of nintedanib on slowing the rate of lung disease in patients who have been diagnosed with COVID-19, and have ongoing lung injury more than 30 days out from their diagnosis. Required one of the following after diagnosis with SARS-CoV-2: supplemental oxygen by nasal cannula, high flow oxygen, non invasive ventilation such as CPAP or BIPAP, or mechanical ventilation or a history of desaturation below 90%.
This study will examine the visual outcomes of subjects undergoing cataract surgery and minimally invasive glaucoma surgery with the implantation of a trifocal intraocular lens.
Currently, there are limited prevention or treatments available for dyschromia in burn hypertrophic scars (HTSs). The limited available techniques involve transferring melanocytes from unaffected areas to the scar to adjust pigment. These techniques involve the creation of a donor site and do not utilize the cells that may already be present in scars. This study aims to confirm melanocyte presence in regions of hypo- and hyper- pigmented HTS. If melanocytes can be found in regions of hypopigmentation, these scars may be able to be treated in the future by pigmentation stimulators without the need for surgery. Additionally, if pigmentation specific molecules of interest can be found to be up-regulated in hyperpigmented scar, these may be able to be altered by a pharmacotherapy.
When people walk, their ankle joints help to hold them upright and move them forward. Ankle braces are often given to people who have had a stroke to help their ankle joints work properly. The investigators have developed a method to design and make a special type of ankle brace that allows the investigators to control every characteristic of the ankle brace, allowing the investigators to customize the ankle brace to fit and function just the way the investigators want it to. The investigators think that ankle braces customized to meet the needs of each individual person will help the participants walk better. The investigators have also developed a prescription model that tells the investigators how to customize these ankle braces to address different levels of two common impairments experienced by people post stroke -decreased ability to move the ankle joint and weakened calf muscles. The purpose of this study is to test the prescription model to see if wearing the ankle brace customized based on the prescription model improves people's ability to walk. To accomplish this goal, the investigators will first measure each person's ability to move his/her ankle joint and the strength of his/her calf muscles. The investigators will put this information in to the prescription model to determine how to customize the ankle brace for each person. The investigators will then use the method developed to make the customized ankle brace. Finally, the investigators will measure how each person walks in the ankle brace customized just for the participants. This study will allow the investigators to validate and/or refine the prescription model and teach the investigators how persons post-stroke adapt to walking in ankle braces with different characteristics.