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.
Smoking is the "leading, preventable death-cause worldwide", being responsible for almost 700,000 deaths in the E.U. annually. Therefore, implementing successful, long-term smoking cessation strategies is a long-term priority for the NHS. Recent evidence suggests that e-cigarettes (i.e., vaping) are a successful cessation tool, with around 3.6 million users in the UK. There are concerns about long-term vaping, particularly in relation to their cardiovascular effects, as there are no relevant, longitudinal studies. Therefore, we propose a 38-month, four-group longitudinal study exploring the cardiovascular physiological effects of the use of e-cigarettes over a two-year period, informing policy makers and e-cigarette users (vapers). Our study was developed with the support of vapers. The main research question is whether there are any differences in cardiovascular physiology between vapers, who are ex-smokers (Group A), vapers with no previous smoking experience (Group B), dual users (i.e., those who vape and smoke (Group C) and ex-smokers who don't vape (Group D). Two-hundred participants from Sheffield and Leeds will be invited on five occasions (baseline, as well as 6-,12-,18- and 24-months post-baseline). We will assess macrovascular and lung function, cardiovascular disease risk (through questionnaires and blood biomarkers), vaping and smoking dependence, smoking and and vaping history among others.
The purpose of this study is to compare porcine collagen membrane and bovine collagen wound dressing in human tooth extraction sites. The outcomes measured will be soft tissue thickness changes as well as bone density changes.
The goal of this clinical trial is to explore the effect of mesenchymal stem cell therapy on immune non-responder patients. The main questions it aims to answer are: 1. Efficacy of human umbilical cord mesenchymal stem cells combined with antiviral therapy in the treatment of AIDS patients with immune non-response. 2. Safety of human umbilical cord mesenchymal stem cells combined with antiviral therapy in AIDS patients with immune non-response. Participants will receive CD4,CD4/CD8, and RNA viral load tests and will be randomly assigned to either saline or mesenchymal stem cell therapy. Investigators will evaluate the safety and efficacy of mesenchymal stem cell therapy based on examination results.
Nasal patency is an important component of performing exercises because it helps in humidifying, heating and filtering the inhaled air. However, many athletes and exercisers experience difficulty breathing through their nose, which can affect their breathing and performance. Namely, during sports activities and greater physical effort, there is increased air flow, which causes significant dehydration and cooling of the mucous membrane of the upper respiratory system. This dehydration is associated with the release of inflammatory mediators, which can ultimately lead to narrowing of the airways (eg in athletes with asthma). However, in all athletes, regardless of whether they have asthma or not, damage to the airways can occur because during exercise, hyperpnea exposes the respiratory epithelium to increased physical forces and pressure, which leads to the risk of exfoliation of the previously dehydrated epithelial cells of the nose and even their complete separation. Repeated stretching and compression can negatively affect the functionality of the epithelium and, with repeated exposure and damage, lead to structural and functional changes. Rinsing the nose with a hypertonic or isotonic solution of seawater is a potential solution for nasal obstruction because after rinsing, the airflow through the nose improves and symptoms of obstruction are reduced. However, the effects of using nasal lavage solutions along with exercise in elite athletes are not yet known. The potential synergy of exercise and isotonic seawater solution as a nasal spray on airflow and the subjective impression of nasal patency in healthy individuals has not been sufficiently investigated5. Research question What is the effect of an isotonic seawater solution applied as a nasal spray on nasal airflow and the subjective impression of nasal obstruction in healthy athletes? Hypothesis An isotonic seawater solution applied as a nasal spray will improve nasal airflow and the subjective impression of nasal obstruction in healthy athletes.
This is a prospective single center, randomized, double-blind, 2 arm placebo-controlled study in subjects with Parkinson's disease receiving levodopa .The patients will be randomized to receive tablet Folic Acid 10 mg per day or placebo for 8 weeks. The safety and efficacy outcome measures will be assessed at baseline and 8 weeks.
During the initial encounter, the nurses will complete program enrollment forms (consents and disclosures as approved by IRB), medical history, and risk assessment. If needed, the RN will facilitate a 4th generation rapid HIV test or draw HIV serology. A general review of systems, focused physical exam with emphasis on sexually transmitted infections and signs of seroconversion is provided, including identifying signs of genitourinary infection. The nurse will order labs per standing order and performs blood draw. Pre-test and Post-test counseling with HIV and STI testing is provided at this time. Upon receipt of a negative HIV rapid or serology test, PrEP-RN provides a 7-14 day supply of samples with a 30-day prescription of FTC/TDF (Truvada) or a 30-day prescription of FTC/TAF (Descovy) per standing order. At each follow-up visit, client's self-efficacy, attitudes/beliefs about PrEP, general health indicators, and social determinants of health, such as access to transportation and housing status, are recorded. Process evaluation will be performed to determine relationships of these variables and PrEP adherence, implementation (12 months), and continuation/dissemination (year 2) phases of the study.
The goal of this randomized controlled trial is to compare the effectiveness of two innovative interventions aimed at preventing cognitive decline and work-related problems to enhanced usual care in improving quality of life in people with multiple sclerosis. Secondary objectives are: - to compare the effectiveness of the investigated interventions in improving cognitive, psychological, and work functioning, and in enhancing the brain's functional network - to examine which factors (i.e., baseline cognitive, psychological, work, and brain MRI-parameters) are predictive of the response to the investigated interventions - aim to qualitatively reflect on the process and outcome of the investigated interventions considering the perspectives of relevant stakeholders to allow for smooth and successful implementation in clinical practice Participants will follow the intervention for four months, with follow-up measurements at six months after intervention and 12 months after intervention.
The investigators will conduct randomized and controlled clinical studies in order to preliminarily explore the efficacy and safety of low-dose cyclophosphamide and lenalidomide in maintenance therapy for MM that is not suitable for transplantation in the standard-risk group.
The purpose of this study is to assess the safety and effectiveness of the Artisse™ Intrasaccular Device in the treatment of unruptured and ruptured wide-neck bifurcating intracranial aneurysms.
Our data suggest that modulating the characteristics of light carries the potential to modify the host response to injury and critical illness and thus, improve outcome. The ability to modify the host response to the stress of major operations and sepsis carries immense potential to improve patient care. The primary purpose of this study is to determine if exposure to bright blue (442nm) enriched light, by comparison to ambient white fluorescent light, reduces the inflammatory response or organ dysfunction in patients undergoing 1) medical treatment for pneumonia, 2) a 2-stage arthroplasty for surgical management of a septic joint, 3) surgery for a necrotizing soft tissue infection (NSTI), and 4) surgery for an intraabdominal infection (e.g., diverticulitis). We will expose participants to one of two (2) lighting conditions: 1) high illuminance (~1700 lux,), blue (442nm) spectrum enriched light and 2) ambient white fluorescent light that provides the standard environmental lighting (~300-400 lux, no predominant spectrum) of the hospital. Both cohorts will be exposed to a 12 hours:12 hours light:dark cycle photoperiod. Those subjects assigned to blue light will be asked to shine this small portable blue enriched light on themselves from 0800 to 2000 for 3 days. At the transition from light to dark, the blue-enriched light is turned off, and additional blue wavelength light removed with an amber filter. Thus, the total period of intervention is 72 hours. The outcome of interest is change in the inflammatory response after surgery for appendicitis or diverticulitis as measured by the following parameters: white blood cell count, heart rate, the development of abdominal abscess, serum cytokine concentrations. The outcome of interest is change in the inflammatory response during pneumonia as measured by the following parameters: white blood cell count, heart rate, and serum cytokine concentrations.