Loading clinical trials...
Loading clinical trials...
Discover 22,668 clinical trials near New York, New York. Find research studies in your area.
Showing 15441-15460 of 22,668 trials
NCT01470027
The overall objective of this developmental/exploratory study is to use noninvasive proton magnetic resonance spectroscopy (1H MRS) to assess (a) whether brain levels of the antioxidant glutathione (GSH) are decreased in vivo, as has been found in postmortem brain, in 30 patients with Parkinson's disease (PD) compared to matched controls; (b) whether GSH levels in PD brain increase significantly following 30 days of daily supplementation with 1800mg or 3600mg of N-acetylcysteine (NAC) compared to placebo and to baseline, and (c) whether any such increases in brain GSH would be dose-dependent and be associated with a change in the participants' oxidative stress profiles. In addition, a clinical assessment battery, including quantitative tests of motor function, will be performed to investigate potential associations between the NAC intervention, brain GSH levels, oxidative stress markers, and clinical presentation. If successful, this study will represent the first objective documentation of whether there is a GSH deficit in living PD brain that dietary NAC supplementation can mitigate, thereby providing a compelling justification for investigating such neuroprotective strategies in larger controlled clinical trials.
NCT02186704
The primary aim of the "Sensing Atrial High Rate Episodes with DX System in Implantable Cardioverter Defibrillators Trial" (SENSE Trial) is to assess the efficacy of a implantable cardioverter-defibrillator (ICD) lead with dedicated atrial sensing dipoles in detecting atrial high rate episodes. The study hypothesis is that an ICD system with a lead with dedicated atrial sensing dipoles will have a diagnostic yield comparable to that of a standard dual chamber ICD system and superior to that of a standard single chamber ICD system.