Healthy Paid Clinical Trials in New York

Groups of unimpaired participants will all receive speech motor training of nonwords, and six tDCS conditions will be compared: anodal tDCS over speech motor regions; cathodal tDCS over speech motor regions; anodal tDCS over left frontal regions; cathodal tDCS over left frontal regions; cathodal stimulation over non-speech motor regions (anodal already collected);and sham tDCS (no stimulation). This will address a basic science question about whether the mechanism underlying speech motor learning requires premotor and motor cortical regions to be stimulated, which has implications for treatment of acquired speech impairment. The primary outcome measure will be the difference in production accuracy and changes in motor acuity (measured with duration) of novel consonant cluster production. Read Less

Prenatal multivitamin/multimineral supplements (MVI) provide important nutrition supplement to the diet of pregnant women to cover potential deficiencies and optimize nutrition status of both mom and baby, especially when the diet is suboptimal or nutrient demand is high while absorption is hindered by various factors such as genetic variance and gastrointestinal function. In this double-blind, randomized, controlled trial, the investigators will recruit 70 pregnant women at gestational week 12-14 and randomly assign them to either receive a Ritual prenatal MVI (n=35) or another commercially available prenatal MVI (n=35) through out pregnancy. Both supplements are over the counter and commercially available. The major differences between the two MVIs are the chemical form of folate as either 5-methyl-tetrahydrofolate or folic acid, and the dosages of vitamin D, biotin, and docosahexaenoic acid. The investigators will collect blood samples in each trimester of pregnancy and the placenta and cord blood at delivery to assess differences in blood nutrient levels. The investigators hypothesize that consumption of Ritual MVI leads to better nutrition status and biomarkers in maternal-fetal dyads compared to control during the antepartum period. Read Less

Multivitamin/multimineral supplements (MVI) provide important nutrition supplement to the diet of pregnant women to cover potential deficiencies and optimize nutrition status of both mom and baby, especially when the diet is suboptimal or nutrient demand is high while absorption is hindered by various factors such as genetic variance and gastrointestinal function. It is, however, largely unknown whether using an MVI during the lactating period helps improve nutrition status of mom and baby. In this double-blind, randomized, controlled trial, the investigators will recruit 7- postpartum women who exclusively breastfeed at week 5 postpartum and randomly assign them to either receive the Ritual MVI which is commercially available or a blank placebo for 10 weeks. A blank placebo is appropriate because there is currently no recommendation or scientific consensus that lactating women who are healthy and eat a normal diet would have improved nutrition status or maternal-infant health outcomes from a nutrition supplement. The investigators will collect blood and breastmilk samples at baseline and end of the study to assess nutrient status. The investigators hypothesize that consumption of a Ritual MVI leads to better nutrition status and biomarkers in maternal-child dyads compared to control. Read Less

This is an early feasibility trial to determine whether transcutaneous neuromuscular electrical stimulation, with or without transcutaneous spinal cord stimulation, using an investigational neurostimulation device improves functional arm/hand movements in individuals with paralysis or paresis due to a spinal cord injury or stroke and improves functional arm/hand or leg/foot movements in individuals with paralysis or paresis due to other brain or nerve injuries. In this study, eligible individuals that agree to participate will be asked to attend up to 5 study sessions a week for 1 year (depending on participant availability), with each session lasting up to 4 hours. At the first study session, participants will have their demographic information collected, vital signs assessed, and have measurements performed of their limbs and torso, as appropriate. They will also undergo clinical evaluations and tests to assess their current functional movement and sensation capabilities. During subsequent study sessions, participants will undergo many tasks designed to improve functional movements in paralyzed limbs. Specifically, participants will receive neuromuscular electrical stimulation to the limb(s) and/or electrical stimulation to the spinal cord to evoke specified movements. The stimulation parameters and locations on the spinal column and/or limb(s) that evoke specific movements will be noted. The movements will be assessed with visual inspection, electromyography, and/or sensors. The clinical evaluations and tests to assess functional movement and sensation capabilities will be repeated throughout the study and at the last study session to assess for functional improvements compared to the first study session. Upon completion of these study sessions, the individual's participation in the study is considered complete. Read Less

This is a Phase I multicenter, open-label, dose-ranging, three-dose PK and PD study of injectable LB administered as an IM or SQ injection at 40 mg, and subsequently at 50mg SQ and then 60 mg SQ depending on the preliminary pharmacokinetic and pharmacodynamic results obtained with 40 mg dosing. Read Less

In this study, we investigate the impact of insulin resistance on the acceleration of brain aging, and test whether increased neuron insulin resistance can be counteracted by utilization of alternate metabolic pathways (e.g., ketones rather than glucose). This study has three Arms, which together provide synergistic data. For all three Arms, subjects are tested in a within-subjects design that consists of 2-3 testing sessions, 1-14 days apart, and counter-balanced for order. During each session we measure the impact of fuel (glucose in one session, ketones in the other) on brain metabolism and associated functioning. For Arms 1-2, our primary experimental measure is functional magnetic resonance imaging (fMRI), which we will use to trace the self-organization of functional networks following changes in energy supply and demand. Arm 1 tests the impact of endogenous ketones produced by switching to a low carbohydrate diet, while Arm 2 tests the impact of exogenous ketones consumed as a nutritional supplement. For Arm 3, we use simultaneous magnetic resonance spectroscopy/positron-emission tomography (MR/PET) to quantify the impact of exogenous ketones on production of glutamate and GABA, key neurotransmitters. Subjects will be given the option to participate in more than one of the Arms, but doing so is not expected nor required. Prior to scans, subjects will receive a clinician-administered History and Physical (H&P), which includes vital signs, an oral glucose tolerance test (OGTT), and the comprehensive metabolic blood panel. These will be used to assess diabetes, kidney disease, and electrolytes. If subjects pass screening, they will be provided the option to participate in one or more Arms, which include neuroimaging. To provide a quantitative measure of time-varying metabolic activity throughout the scan, based upon quantitative models of glucose and ketone regulation, as well as to be able to implement safety stopping rules (see below), we will obtain pin-prick blood samples three times: prior to the scan, following consumption of the glucose or ketone drink, and following completion of the scan. To assess effects of increased metabolic demand, we measure brain response to cognitive load, transitioning from resting-state to spatial reasoning through a Tetris task. To assess effects of increased metabolic supply, we measure brain response to glucose or ketone bolus. Read Less

The main goal of this research is to determine the role of several brain regions in memory processes and cognitive functions. Participants will be remotely supervised via video chat while self-administering tDCS, a form of non-invasive brain stimulation. Before participating in the experiment, participants will be properly trained on use of the remote tDCS device and screened for eligibility. While using the tDCS device, participants will be engaging in tasks that assess different aspects of memory and executive functioning. By using remotely supervised tDCS while participants are completing these cognitive tasks, we will be able to make causal claims about the role of the targeted brain regions in different cognitive processes. Read Less