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 primary objective is to evaluate whether alcohol warnings about different topics elicit higher perceived message effectiveness than control messages. The secondary objective is to evaluate whether alcohol warnings about different topics elicit higher reactance than control messages.
The goal of this prospective, randomized, controlled trial conducted at Baylor St. Luke's Medical Center is to compare the effectiveness and clinical outcomes of using a traction device in colonic endoscopic submucosal dissection (ESD) to those of using conventional ESD. The investigators of this study hypothesize that use of the traction device will help expedite colonic endoscopic submucosal dissections.
The use of electronic nicotine delivery systems, or e-cigarettes - colloquially referred to as "vaping" - in the United States has increased exponentially since their introduction to the US market in 2007. Prevalence of ever and current e-cigarette use is highest among teenagers and young adults with 16-28% of this population having reported vaping. While the majority of e-cigarette users are current tobacco smokers, 32.5% of current e-cigarette users are never- or former-smokers, representing a growing population of young adults who exclusively vape. While e-cigarettes have been marketed as a safer alternative to tobacco cigarettes, clinical studies examining these claims are limited. Cardiovascular disease (CVD) is the primary cause of premature death among tobacco cigarette smokers and reductions in vascular endothelial function, a significant predictor of future CVD, are detectible in otherwise healthy young adults who smoke. Despite the explosion in e-cigarette use among young adults, the health effects - especially the effects on mechanisms of vascular function - of these devices remain relatively unexplored. In this study, we use the blood vessels in the skin as a representative vascular bed for examining mechanisms of microvascular dysfunction in humans. Using a minimally invasive technique (intradermal microdialysis for the local delivery of pharmaceutical agents) we examine the blood vessels in a dime-sized area of the skin in otherwise healthy young (18-24yrs) chronic e-cigarette users. Local heating of the skin at the microdialysis sites is used to explore differences in mechanisms governing microvascular control. As a compliment to these measurements, we also draw blood from the subjects to measure circulating factors that may contribute to cardiovascular health and examine markers of inflammatory activation. We will also collect urine from female participants to measure estradiol.
Optimizing treatments in mental health requires an easy to obtain, continuous, and objective measure of internal mood. Unfortunately, current standard-of-care clinical scales are sparsely sampled, subject to recency bias, underutilized, and are not validated for acute mood monitoring. The recent shift to remote care also requires novel methods to measure internal mood. Recent advances in computer vision have allowed the accurate quantification of observable speech patterns and facial representations. The continuous and objective nature of these audio-facial behavioral outputs also enable the study of their neural correlates. Here, the investigators hypothesize that video-derived audio-facial behaviors have discrete neural representations in the limbic network and can provide a critical set of reliable longitudinal estimates of mood at low cost across home and clinic settings.
The long-term goal of this research is to develop a theoretically grounded, effective, accessible and sustainable mHealth PrEP care continuum intervention for racially/ethnically diverse transgender women (TW) and gay, bisexual, and other men who have sex with men (GBMSM) disproportionately impacted by the HIV epidemic. To reach this goal, the investigators will compare study outcomes among persons randomized to use a mobile app (eSTEP) intervention tailored to the unique needs of TW and GBMSM with interactive components delivered before in-person HIV testing and PrEP initiation visit and interactive components delivered after PrEP is initiated. The eSTEP group will be compared to usual HIV testing and PrEP care.
The aim of the proposed study is two-fold: to determine whether the intake of peanuts (a) enhances immune function and (b) produces a desirable impact on selected cardiometabolic biomarkers and risk factors.
The goal of this clinical trial is to test the effect of 12 weeks of 1.5 cups per day of fresh mango on glucose control, insulin resistance, lipids, inflammation, oxidation and body composition in individuals with prediabetes. The main questions it aims to answer are: - What is the effect of 1.5 cups per day of fresh mango over 12 weeks on indicators of glycemic control including fasting glucose and HgbA1c? - What is the effect of 1.5 cups per day of fresh mango over 12 weeks on fasting blood insulin and insulin resistance (HOMA-IR)? - What is the effect of 1.5 cups per day of fresh mango over 12 weeks on lipids including LDL-cholesterol, total cholesterol, HDL-cholesterol and triglycerides? - What is the effect of 1.5 cups per day of fresh mango over 12 weeks on oxidative stress including oxidized LDL-cholesterol and 8-iso-PGF2-alpha? - What is the effect of 1.5 cups per day of fresh mango over 12 weeks on markers of inflammation including c-reactive protein, e-selectin, ICAM and VCAM? - What is the effect of 1.5 cups per day of fresh mango over 12 weeks on percent body fat, fat mass, and lean mass? Participants will be asked to: - Consume 1.5 cups of mango per day for 12 weeks, take a 4 week break, and then avoid consuming mangos for 12 weeks - Attend a prerandomization clinic prior to study - Attend three (3) clinics where blood will be drawn during weeks 0, 12, and 28 of the study - Attend eight (8) clinics where anthropometric measurements (height, weight, body composition) will be conducted and interaction with study clinicians will occur during weeks 0, 4, 8, 12, 16, 20, 24, and 28 of the study - Complete questionnaires and surveys in person and remotely, including six (6) 24-hour dietary recalls. Researchers will compare the 12 weeks participants consume mango to the 12 weeks the participants are not consuming mango to see if there are differences in glycemic indicators, insulin resistance, lipids, inflammation, oxidation and body composition between the two time periods.
This is a phase 1/2 trial of pacritinib in combination with azacitidine in patients with Chronic Myelomonocytic Leukemia (CMML). Patients will be newly diagnosed or previously treated but could not have received a prior JAK inhibitor. Patients who have previously been treated with a hypomethylating agent (HMA) must have received ≤ 1 cycle. Pacritinib will be initially tested at a dose of 200mg twice daily (dose level 0) in combination with azacitidine 75mg/m2, which can be administered subcutaneously or intravenously, for 7 days in a 28-day cycle. If there are 2 DLTs in the first 6 patients, there will be a dose escalation to pacritinib 100mg twice daily (dose level -1) and an additional 6 patients will be enrolled. Based on the phase 1, 3+3 dose de-escalation design, 6-12 patients will be enrolled in the phase 1 portion. After the completion of phase 1 and identification of the recommended phase 2 dose (RP2D), the trial will then proceed to phase 2 which will employ a Simon two stage design. This portion will include the 6 patients enrolled during the phase 1 portion at the MTD. An interim analysis for futility will occur. If 3 or fewer patients have had a clinical benefit (CB) or better, as defined by 2015 MDS/MPN IWG criteria, the PI and DSMC will meet to discuss the totality of the evidence and determine if the trial shall proceed. In the second stage, an additional 12 patients will be enrolled.
The purpose of this study is to examine the effects of a postural adjustment, targeted training program on balance ability and postural responses anticipatory postural adjustments (APA) and compensatory postural adjustments (CPA) in individuals with MS
In low-resource areas of the world, anemia screening relies on analyzing a blood sample and is generally carried out in health facilities. Current anemia screening approaches have not yielded satisfactory results due to critical limitations including lack of a) reliable access to laboratory facilities, b) reliable non-invasive out-of-hospital screening tools for community health-workers, c) integration of anemia data across health systems and d) distinction between hemolytic and nutritional causes. Currently available non-invasive tools have unacceptably low accuracy and cannot distinguish between nutritional and hemolytic etiologies. Prototype Anemia Diagnostic Assistant (ADA) We have developed a prototype Anemia Diagnostic Assistant for non-invasive, simultaneous detection of two markers of anemia, blood hemoglobin and the End-Tidal carbon monoxide levels. The device comprises an optical sensor module and ETCO breath sampling module. The unique and significant advantage of the instrument is its ability to detect, independently, two orthogonal variables that are required for differential diagnosis of the nutritional and hemolytic anemia: 1. Hemoglobin concentration using a non-invasive diffuse reflectance spectroscopy. Using high-fidelity, 11 wave-length spectral sensor, the device will provide optical quantification of hemoglobin levels. Optical hemoglobin sensing using diffused reflectance spectroscopy is well known, however; using traditional spectrophotometry instrumentation is very costly and thus impractical for this project. As a solution, we propose to use a validated commercially-available high accuracy 11-wavelength sensor within the visual and near-infrared (IR) range of the spectrum. The 11-wavelength spectrum will allow for sufficient accuracy in measuring the reflectance AND transmittance at isosbestic wavelengths on hemoglobin extinction curve as well as to compensate for the presence of melanin, which is a major interferant in optical determination of hemoglobin concentration. [9] The sensor was originally designed to collect data on the earlobe and/or the fingertip. Additional iterations include a sensor that straps around the wrist (similar to a smartwatch). Both versions of the device may be used in the study, and both feature standard USB or Bluetooth connectivity to ubiquitous mobile Android an iOS-based mobile platform . 2. End-tidal carbon monoxide. Using a non-invasive probe placed in proximity to the nostrils, the device will measure ETCO as a proxy measure of hemolysis. ETCO measurement as a measure for the presence of hemolysis is well documented in the medical literature and is commonly used in newborns units as a screening method for the presence of hemolysis [7,8,10]. A positive finding (presence of elevated levels of ETCO) will then prompt a referral for further hospital testing. The objective of this study is to determine the hemoglobin and ETCO concentration in healthy volunteers using the prototype device and compare the results with the hemoglobin and ETCO concentrations obtained using standard of care devices and the CoSense system for the (ETCO measurement).