There are more than 498,563 clinical trials published worldwide with over 60,000 trials that are currently either recruiting or not yet recruiting. Use our filters on this page to find more information on current clinical trials or past clinical trials (free or paid) for study purposes and read about their results.
The ability of the vaccines today to generate a long-lasting protection against infections varies greatly from one vaccine to another. The yellow fever vaccine (YF-17D) is one of the most successful vaccines ever developed, having been administered to over 600 million people globally. A single vaccination is known to induce durable protection over several decades. In contrast, the quadrivalent influenza vaccine (QIV) generates an immunity that wanes quickly with no long-lasting protection. Currently, the duration of immune protection for new vaccines is difficult to predict during vaccine product development and can only be ascertained by a "wait and see" approach. This is due, in part, to the fact that some of the signals that activate a durable immune system protection remain unknown. This study aims to provide a better understanding of this problem by vaccinating willing participants with either the FDA-approved yellow fever vaccine or the quadrivalent influenza vaccine and collecting baseline and follow-up biologic samples to compare how the immune system reacts.
This trial investigates the effects of continuous glucose monitoring (CGM) and an in-hospital diabetes team on in-hospital glycemic and clinical outcomes in patients with type 2 diabetes compared to standard glucose point-of-care (POC) testing and an in-hospital diabetes team.
In endoscopic spinal nerve root decompression surgery, the intraoperative nerve exploration is time-consuming and critical. According to statistics, the incidence of nerve root injury under spinal endoscope is 1.8-2.5%. Damage to nerve roots may lead to postoperative sensory retardation and motor weakness, thereby impairing the physical function of patients. A real-time auxiliary intraoperative nerve identification technology is necessary. In this prospective, open-label, randomized, parallel controlled trial, 40 patients who undergo endoscopic spinal surgery are included. Subjects are randomly divided into control group and low, medium and high Indocyanine green(ICG) preoperative administration experimental group. Standard endoscopic spinal surgery is performed in the control group. Patients in the experimental group received an intravenous injection of ICG before surgery, and a standard endoscopic spinal surgery is performed with the use of a fluoroscopic endoscopic surgical imaging system to assist the surgeon in identifying and protecting the nerve roots. The main objectives of this experiment are (i) to explore the safety and feasibility of ICG fluorescence imaging to assist in nerve root identification during endoscopic spinal surgery and (ii) the effectiveness of this technique for endoscopic search for nerve roots. The secondary objective is to explore the optimal ICG dosing regimen.
The Alternative Sexualities Health Research Alliance (TASHRA) will work collaboratively with Gilead Sciences, Inc. to study Pre-Exposure Prophylaxis (PrEP) uptake and adherence; levels of stigma around PrEP use; and changes in health beliefs around PrEP use. The study design will compare kink-involved or bondage/discipline/dominance/submission/sadism/masochism (BDSM)-involved individuals responses to generic vs. kink-focused printed and educational-entertaining video materials in a 12 month crossover study. The primary objective of the study is to examine factors that increase the uptake of PrEP in a novel sexual subculture by testing the impact of an entertainment-education intervention designed to be highly relatable to kink-involved individuals. Secondary Objectives: PrEP4Kink will measure knowledge of PrEP and attitudes towards PrEP uptake over time. These are elements identified by the Health Belief Model: perceived risk of HIV; susceptibility to HIV; perceived barriers to PrEP uptake; perceived benefits of PrEP uptake; perceived effectiveness of PrEP; and self-efficacy of initiating PrEP uptake. Moderating and ancillary factors will be measured, and their relation to the elements of the Health Belief Model will be analyzed. Moderating factors include the centrality of kink identity; the level of kink community involvement; the types and frequencies of kink and sex behaviors. Demographic variables will be measured and their relation to elements of the Health Belief Model will be analyzed, including age; number of years involved in kink; gender identity; sex assigned at birth; racial/ethnic identity; educational attainment; income level; insurance coverage; sexual orientation identity; and sexual attraction.
Patients diagnosed with cancer have a particularly high risk of developing malnutrition due to the disease itself and due to symptoms of cancer treatments that can affect food intake such as reduced appetite, nausea, fatigue, and alterations in taste and smell. Nutritional treatment is essential in the prevention and treatment of malnutrition. Oral nutritional supplements (ONS) are often recommended to cancer patients who need to increase their nutritional intake and are unable to meet their nutritional requirements by consumption of normal food alone. However, patient compliance with ONS depends on sensory acceptability of such products. Therefore, the objective of this study is to investigate preferences of sensory characteristics of ONS among cancer patients. Additionally, possible associations between taste and smell alterations and dietary intake, malnutrition risk, and quality of life will be investigated. The results from this study will optimize recommendations of ONS in the clinical setting and encourage new efforts among manufacturers in developing acceptable sensory characteristics of ONS to cancer patients. Findings from this study will contribute to improving nutritional treatment for cancer patients.
The stress response is mediated by the activation of the hypothalamo-pituitary-adrenal axis and the sympathetic nervous system, leading to glucocorticoid and catecholamines release respectively. This stress response is regulated by feedback loops, involving cortical and subcortical structures. Non-invasive brain stimulation applied over the dorsolateral prefrontal cortex modulates the subcortical dopaminergic transmission at rest and can reduce the hormonal and cognitive alterations induced by stress. This study aims to investigate the Non-invasive brain stimulation -induced modulation of dopamine transmission in an acute stress situation.
The Purpose of this study is to better understand changes in obstructive coronary artery disease in different organs other than the heart such as the brain and the kidneys using a new generation total body PET scanner.
Rationale: Deep brain stimulation (DBS) of the nucleus subthalamicus (STN) is an effective surgical treatment for the patients with advanced Parkinson's disease, despite optimal pharmacological treatment. However, individual improvement after DBS remains variable and 50% of patients show insufficient benefit. To date, DBS-electrode placement and settings in the highly connected STN are based on 1,5-Tesla or 3-Tesla MR-images. These low resolution and solely structural modalities are unable to visualize the multiple brain networks to this small nucleus and prevent electrode activation directed at its cortical projections. By using structural 7-Tesla MRI (7T MRI) connectivity to visualize (malfunctioning) brain networks, DBS-electrode placement and activation can be individualized. Objective: Primary objective of the study is to determine whether visualisation of cortical projections originating in the STN and the position of the DBS electrode relative to these projections using 7T MRI improves motor symptoms as measured by the disease-specific Unified Parkinson's Disease Rating Scale (UPDRS-III). Secondary outcomes are: disease related daily functioning, adverse effects, operation time, quality of life, patient satisfaction with treatment outcome and patient evaluation of treatment burden. Study design: The study will be a single center prospective observational study. Study population: Enrollment will be ongoing from April 2023. Intervention (if applicable): No intervention will be applied. Application of 7T MRI for DBS is standard care and outcome scores used will be readily accessible from the already existing advanced electronic DBS database. Main study parameters/endpoints: The primary outcome measure is the change in motor symptoms as measured by the disease-specific Unified Parkinson's Disease Rating Scale (UPDRS-III). This is measured after 6 months of DBS as part of standard care. The secondary outcome measures are the Amsterdam Linear Disability Score for functional health status, Parkinson's Disease Questionnaire 39, Starkstein apathy scale, patient satisfaction with the treatment, patient evaluation of treatment burden, operating time, hospitalization time, change of tremor medication, side effects and complications. Nature and extent of the burden and risks associated with participation, benefit and group relatedness: The proposed observational research project involves treatment options that are standard care in daily practice. The therapies will not be combined with other research products. Participation in this study constitutes negligible risk according to NFU criteria for human research.
This study investigates the short-term effects of the MindEase app on anxiety levels.
This study will investigate the use of hyperpolarized (HP) carbon-13 (13C) alpha-ketoglutarate (aKG) (HP 13C-aKG) to characterize tumor burden in patients with isocitrate dehydrogenase (IDH) mutant glioma.