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NCT ID: NCT03361605 Enrolling by invitation - Healthy Clinical Trials

Neuroimaging of Anesthetic Modulation of Human Consciousness

Start date: April 12, 2017
Phase: Phase 4
Study type: Interventional

This study's purpose is to see if mental functions take place during different levels of anesthesia, using a commonly used drug (Propofol). fMRI (functional Magnetic Resonance Imaging, or "brain imaging") shows areas in the brain involved in thinking at different depths of anesthesia.

NCT ID: NCT03340337 Enrolling by invitation - Healthy Clinical Trials

Electrical Stimulation With Different Currents: the Effects on Force, Tolerance and Fatigue in Healthy Subjects

Start date: November 30, 2017
Phase: N/A
Study type: Interventional

Muscle strength is the amount of force generated by muscle contraction. It could be measured in isometric, isotonic or isokinetic activity, either manually or using a dynamometer. The isometric dynamometer is a validated and cheap tool that could be used to measure Maximal Voluntary Isometric Contraction (MVIC) and Maximal Electrical Induced Contraction (MEIC). It is claimed that higher MEIC values will result in more force gained. If a current is more tolerated it will be easier to achieve better MEIC values. Tolerance to an electrical stimulation could be measured with the Visual Analogue Scale (VAS). A ratio between Normalized MEIC / VAS is often used, implying that the current is better with a higher ratio. Muscle fatigue is defined as a temporary loss or decrease in force-generating ability due to previous contractions. It is claimed that medium frequency neuromuscular electrical stimulation (NMES) generates more fatigue than low frequency currents. Aussie current is a newer medium-frequency alternating current which consists in a sinusoidal waveform, 1 KHz carrier frequency. Neo-Russian current is also a medium-frequency current with a rectangular biphasic symmetrical waveform, 2,5 KHz carrier frequency. Rectangular Biphasic symmetrical (RBS) waveform is a type of Low Pulsed Current (LPC), claimed to be better than classical Russian Current. Purpose: As it has been claimed that LPC is better in MEIC and tolerance, the aim of this study is to compare it with two newer medium frequency currents in terms of MEIC, tolerance and fatigue. Methods: Thirty male subjects, right leg dominant, will receive randomly the 3 types of electrical stimulation. Before that, the MVIC will be measured for data normalization. The MVIC and MEIC will be measured with an isometric dynamometer. In both measurements, subjects will be asked to perform three reps (5 sec work x 120 sec rest) and the best one will be used. To apply Aussie electrical stimulation, an Aussie Sport (Ibramed) will be used. To apply Neo-Russian, a Neurodyn III (Ibramed) will be used. To apply RBS, a Genesy (Globus) will be used. The VAS will be used to assess tolerance to each treatment. A ratio between MEIC and VAS will be calculated. One week later, the subjects will receive, randomly, a fatigue protocol that consists in 21 reps of electrical stimulation with the three types of current. The data will be normalized with the MVIC and the reps equal or below 50 % of the first rep will be considered as a fatigue rep.

NCT ID: NCT03333135 Enrolling by invitation - Healthy Clinical Trials

Ultramarathons and Impact of Phased Electromagnetic Field Therapy (PEMF)

Start date: November 13, 2017
Phase: N/A
Study type: Interventional

This research is being done to better understand the pulmonary consequences of completing an ultra marathon at altitude and a sea level city.

NCT ID: NCT03319446 Enrolling by invitation - Healthy Clinical Trials

Collection of Anonymized Samples

Start date: October 9, 2017
Phase: N/A
Study type: Observational

This is a generic sample collection study for collecting blood, stool, rectal swabs, nasal washes, nasopharyngeal aspirates, nasopharyngeal swabs, throat swabs, nasal swabs, and urine from human sources. Subjects will be recruited from BioFire Diagnostics employees and from the general community. Subjects may be asked about recent or ongoing illness at the time of specimen collection and these symptoms will be recorded and attached to the sample. No other identifying information will be collected and the samples will be kept anonymous.The samples may be used internally or by external sites, such as the clinical study sites, for evaluating and determining performance characteristics of in vitro diagnostic devices.

NCT ID: NCT03269474 Enrolling by invitation - Healthy Clinical Trials

Computational Drug Repurposing for EBS

Start date: November 28, 2017
Phase: N/A
Study type: Observational

The study will compare gene expression differences between blistered and non-blistered skin from individuals with EBS, as well as normal skin from non-EBS subjects. State of the art computational analysis will be performed to help identify new drugs that might help EBS wound healing and reduce pain. Researchers will focus on drugs that have already been approved for treatment of other dermatologic or non-dermatologic diseases, and therefore be repurposed for treatment of EBS. Drug development is a very expensive process taking decades for execution. Drug repurposing on the other hand, significantly reduces the cost and shortens the amount of time that is needed to bring effective treatments to clinical use. To date, there is no specific treatment targeting the physiology and immunologic response in EB patients during wound healing. Market availability of repurposed medications will provide EBS patients rapid access to treatments, thus improving their quality of life.

NCT ID: NCT03253835 Enrolling by invitation - Healthy Clinical Trials

Cardiac Blood Flow Patterns Associated With Left Ventricular Myocardial Damage

Start date: November 21, 2013
Phase: N/A
Study type: Observational

Various factors affect the performance of the heart: The contractile properties of myocardial muscle cells are the fundamental devices for translating tension-generation and shortening of the cardiac muscle into pressure-generation and blood volume ejection from the heart into the body. On the other hand, the performance of heart can be analyzed with respect to input and output of blood to/from the hollow cardiac muscle and evaluated in terms of the performance of a pump: With every heartbeat blood is sucked from a low-pressure system (veins) and pumped to the arterial high-pressure system via one-way valves, whereas efficiency, ejected blood volume, blood flow and pressures are linked by hemodynamic laws. Cardiac magnetic resonance (CMR) is the "gold standard technique" to determine cardiac function and muscle mass, as well as for non-invasive diagnosis of myocardial necrosis/fibrosis. Furthermore, new CMR imaging techniques enabling the measurement of myocardial magnetic relaxation times for characterization of myocardial morphology and the acquisition of time-resolved, three-dimensional blood flow velocity fields in the heart and surrounding vessels, represent promising tools for the evaluation of the interaction between myocardial morphology and cardiac function. Aim of this explorative study is to 1. identify myocardial pathology-associated blood flow patterns in the heart and surrounding great vessels, and 2. correlate characteristic blood flow patterns in the heat (existence of vortices, vorticity, vortex formation, propagation dynamics …) with myocardial injuries.

NCT ID: NCT03243448 Enrolling by invitation - Healthy Clinical Trials

Skin Sympathetic Nerve Activity and Sympathetic Tone

Start date: August 1, 2016
Phase: N/A
Study type: Observational [Patient Registry]

There are many sympathetic hyperactivity diseases in the investigators' clinical practice. However, the conventional method to measure the sympathetic nerve activity had many limitations such as clinical application, data interpretation and even therapeutic manipulation. Therefore the investigators would like to develop a non-invasive method to record the sympathetic nerve activity in the investigators' study that can help gathering the sympathetic nerve activity easily in the investigators' daily clinical situation. By the determination of sympathetic nerve activity status, the health caregiver can understand the disease more.

NCT ID: NCT03160261 Enrolling by invitation - Healthy Clinical Trials

Effect of Exenatide on Cortisol Secretion

Start date: September 7, 2017
Phase: Phase 4
Study type: Interventional

The primary aim of the study is to describe the effect of single dose of 10 micrograms (μg) exenatide given subcutaneously (s/c) on cortisol secretion. Secondary outcomes involve ACTH and glucose levels.

NCT ID: NCT03146520 Enrolling by invitation - Healthy Clinical Trials

Clinical Validation of Stool DNA-based SDC2 Methylation Test for Colorectal Cancer Detection

Start date: December 13, 2016
Phase: N/A
Study type: Observational

Pivotal trials of SDC2 methylation biomarker test in stool DNA to estimate clinical sensitivity and specificity in detection of colorectal cancer.

NCT ID: NCT03127046 Enrolling by invitation - Healthy Clinical Trials

Drug-drug Interaction Between Aceclofenac 200 mg and Esomeprazole 20 mg in Healthy Male Volunteers

Start date: March 31, 2017
Phase: Phase 1
Study type: Interventional

To evaluate the drug-drug interaction between aceclofena and esomeprazole