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 aim of this pilot study is to determine the effects of a 12-week indoor rock climbing training program on heart health, mental health, and behavioral health in generally healthy adults aged 18-35 years old who do not exercise. Participants will learn to rock climb using ropes on an indoor rock climbing wall and participate in the training program 2-3 days per week for 60 minutes each session over 12 weeks. Health outcomes will be measured at 4 time points over the course of the study (pre-intervention, 6-weeks/mid-intervention, 12-weeks/post-intervention, and 24-weeks post-intervention).
In recent years, the technology to detect the gut microbiome's function has become increasingly developed. GMMs are tools (GitHub - raeslab/GMMs: A manually curated database of human gut metabolic modules.) for describing metabolic pathways for linking microbial metabolic function to species associated with a single metabolite, helping to analyze the transcriptional characteristics and metabolic functions of each bacterium, and studying their role of the food chain in the ecosystem. According to our previous research, the group with good weight loss response (more than 10% body weight loss in 8 weeks) after low-carb diet intervention has higher Shannon's diversity and carbohydrate degradation activity test by GMMs, implying the deficiency of availability of energy sources may cause more weight changes. Based on the above research, we designed a low-carb diet (rich in monounsaturated fatty acids) and a low-fat diet (whole grains) with the same calories as a means of weight loss. The primary purpose of this study is to evaluate the pre-GMM test for determines the weight loss benefit of the intervention diet. Furthermore, we try to found the possible mechanism of whether metabolites of microbiota (e.g. SCFA) could affect the immune cell change which modulates adipose tissue .
People living with prediabetes are advised to lose weight to prevent development of type 2 diabetes by participating in intensive lifestyle interventions (ILI's), such as PreventT2. The PreventT2 program focuses on a low-calorie diet for weight loss. However, many people find it difficult to stick to a low-calorie diet over the long-term. The identification of novel, effective and individualized dietary strategies to produce long-term weight loss is critically important in diabetes prevention. An ILI based on PreventT2 which considers individual preferences, allowing participants to choose among a variety of diets, may result in greater adherence to the diet than a standard PreventT2 intervention. ILIs also need to be available to individuals in a wide range of communities, including Americans living in rural communities, who experience higher rates of obesity and chronic disease, yet have less access to medical care, including programs for diabetes prevention. The investigators plan to develop and carry out a 16-week pilot and feasibility study of a group-based ILI program based on PreventT2 plus choice of dietary strategy (Prevention and Choice for Type2 , PACT2) delivered via videoconference to adults with prediabetes living in rural communities. Successful completion of this project will result in the refinement of an ILI that incorporates personal preferences and is tailored to individuals at high risk for type 2 diabetes living in rural areas where access to such interventions is limited.
This study aims to determine the safety and tolerability of combining sequential therapy of Irreversible Electroporation (IRE) and Immunotherapy (IO) for patients with locally advanced unresectable pancreas cancer following first-line treatment with chemotherapy and ablative stereotactic magnetic resonance image-guided adaptive radiation therapy (A-SMART).
Sensorimotor function of the upper limb is often impaired after stroke, even in the chronic phase (minimum 6 months after stroke). Currently, an optimal assessment for sensory processing, one of the most important sensory functions, does not exists. However, our research team has developed a novel assessment paradigm using the KINARM End-Point robot to assess the level of sensory processing of the upper limb. Within a previous study, the investigators examined the validity within 20 chronic stroke patients and 80 age-matched healthy controls by comparing the novel robotic assessment with a set of existing clinical and robotic assessments for the upper limb. The investigators hypothesize that the stroke patients will show a poorer performance on this novel assessment compared to the healthy controls, that the novel assessment will show better correlation coefficients with other sensory tests compared to motor tests, that the novel assessment can differentiate between different motor subgroups of chronic stroke patients, and that the novel assessment shows good test-retest reliability.
Spinal anesthesia is commonly used in cesarean section surgeries . The most important adverse effects of spinal anesthesia are hypotension and bradycardia caused by sympathetic blockade, with an incidence of about 55-100% . However, blocking the venous return by the gravid uterus increases the risk of hypotension. Spinal anesthesia-induced hypotension is commonly associated with uncomfortable symptoms, such as shivering , nausea and vomiting, in the mother. Prolonged maternal hypotension may lead to serious maternal adverse effects, such as cardiovascular collapse, loss of consciousness, apnea, and aspiration of gastric contents. In addition, uteroplacental blood flow decreases in cases of sustained hypotension and detrimental neonatal effects, such as fetal acidosis and fetal death, may occur. Preventing spinal anesthesia-induced hypotension during cesarean section is essential for the well-being of both the mother and neonate. Also, Shivering often happens after spinal anesthesia. Shivering is an unconscious and rhythmic movement involving several groups of muscles. The increase of muscle activity generates the elevation of oxygen consumption, lactic acidosis, and carbon dioxide production In recent years, researchers have focused on the effects of the Bezold-Jarisch reflex (BJR) . This reflex includes a triad of bradycardia, hypotension, and apnea. Researchers have suggested that serotonin and 5-hydroxytryptamine 3 (5-HT3) receptors play an important role in the occurrence of the BJR after spinal anesthesia . The 5-HT3 receptors are present in the heart, lung, and spine. Diminished venous return caused by spinal anesthesia stimulates the cardiac chemoreceptors, and parasympathetic activity increases, which results in bradycardia and hypotension . Studies have suggested that the use of 5-HT3 antagonists may attenuate spinal anesthesia-induced hypotension, thus inhibiting peripheral vasodilatation, alleviating the BJR, and increasing venous return to the heart . Ondansetron is a commonly used 5-HT3 receptor antagonist, and its peak plasma concentration occurs within 30 min following IV injection. Granisetron is a new 5-HT3 receptor antagonist, and the onset of action occurs 30 min following its IV administration [
The purpose of this study is to measure the short- and long-term voice outcome and outcome predictors of glottoplasty, cricothyroid approximation, thyroplasty, and chondrolaryngoplasty using a prospective non-randomized controlled trial and a multidimensional voice assessment protocol. Secondly, a laryngeal magnetic resonance imaging protocol will be developed to measure pre- and postoperative anatomical factors and compare them with the acoustic changes.
The objective of this study is to assess if patients presenting for antenatal testing can complete a Bio Physical Score (BPP) with a home-use ultrasound with remote clinician guidance.
To prospectively evaluate the radiodrug biodistribution of a novel PET imaging agent [18F]F-PSMA-N5 in different organs of prostate cancer patients and its diagnostic efficacy in the diagnosis, recurrence and metastasis of prostate cancer, and to compare with [18F]F-PSMA-1007.
Several studies have reported that diabetic subjects have lower plasma vitamin C concentrations than non-diabetic subjects. Although urinary vitamin C loss in diabetic subjects was reported to be increased in two studies, these are difficult to interpret due to lack of controlled vitamin C intake, inadequate sampling, lack of control subjects, or methodology uncertainties in vitamin C assay and sample processing. Consequently, it is unclear whether diabetic subjects truly have both low plasma and high urine vitamin C concentrations. We propose that low plasma vitamin C concentrations in diabetic subjects are due in part to inappropriate renal loss of vitamin C in these subjects but not in healthy controls. We will study vitamin C concentrations in patients with type 1 and type 2 diabetes and in matched healthy research subjects. Vitamin C concentrations in plasma, neutrophils (as a proxy for tissue concentrations) and in urine will be measured in outpatients. In those willing to be admitted to the Clinical Center, we will measure 24-hour urinary excretion of vitamin C while on a vitamin C free diet, and creatinine clearance, a measure of glomerular filtration rate. On day 2 of the inpatient study, subjects will receive a single 200mg dose of oral vitamin C and we will measure vitamin C concentrations in frequent blood and urine samples to determine the renal threshold and relative bioavailability for vitamin C. Single nucleotide polymorphisms (SNPs) will be determined in genomic DNA responsible for the two proteins mediating sodium-dependent vitamin C transport, SVCT1 and SVCT2. If low plasma and high urine vitamin C concentrations are found in diabetic subjects, further studies will be needed to explore mechanisms and to determine recommended dietary allowances for this patient population.