Active clinical trials for "Central Nervous System Diseases"

Stroke-associated pneumonia (SAP) is one of the important risk factors influencing poor outcomes and death in stroke patients. Over the past two decades, accumulating evidence suggests that post-stroke brain injury mobilizes the adrenergic system, which induces post-stroke immunosuppression and SAP. This study is designed to test the safety and efficacy of an adrenergic β-receptor blocker, propranolol, with or without combination of antibiotics, in reducing SAP in stroke patients. The underlying immune mechanisms will be investigated.

Inflammatory or degenerative diseases of the brain and spinal cord, such as multiple sclerosis, may be related to problems with an individual s immune system. However, more information is needed on the ways in which the cells of the immune system interact with the central nervous system (CNS). This study will compare tests performed on both healthy volunteers and individuals who have signs or symptoms of immune-related damage to their CNS. This study will include two groups of subjects at least 12 years old. Subjects will either have symptoms of immune-related CNS damage, or will be healthy volunteers selected for comparison purposes. Study participants will visit the NIH Clinical Center on an outpatient basis for an initial evaluation visit. During the visit, patients will provide a comprehensive medical history and undergo a neurological examination, and will provide blood samples for research purposes. The healthy volunteers will be asked to schedule a return visit for a magnetic resonance imaging (MRI) procedure, and may be asked to undergo other tests requested by the study researchers on an as-needed basis. The group of patients with symptoms of immune-related CNS damage will be asked to undergo a series of tests, including the following: MRI procedures, with a minimum of three brain MRIs and one spinal cord MRI taken approximately 4 weeks apart A diagnostic lumbar puncture, performed on an outpatient basis Tests of brain and vision activity Additional blood and tissue samples All study participants will return for a followup visit 1 year after the initial evaluation visit. Patients with symptoms of immune-related CNS damage may be offered the opportunity to participate in additional followup tests with NIH researchers.

A Multi-Center, Phase II, Randomized, Double-Blind, Prospective, Active Placebo-Controlled Trial of Sub-Anesthetic Intravenous Infusion of Ketamine to Treat Levodopa-Induced Dyskinesia in Subjects with Parkinson's Disease.

The fetal CNS screening examination during the mid-trimester scan in low-risk pregnancies should include evaluation of the fetal head and spine, using transabdominal sonography. Evaluation of two axial planes allows visualization of the relevant cerebral structures to assess the anatomic integrity of the fetal brain.These planes are commonly referred to as the transventricular and transcerebellar planes. A third plane, the so-called transthalamic plane, is frequently added, mostly for the purpose of biometry. Structures that should be noted in the routine examination include the lateral ventricles, the cerebellum, the cisterna magna, and the cavum septi pellucidi (CSP). Head shape and brain texture should also be noted on these views.

Project rationale: Since 2017, multiple sclerosis diagnosis should match the new McDonald criteria in which a "no better explanation than MS" should be fulfilled. However, many patients present with red flags that lead to a complex diagnostic work-up. There are no available biomarkers that permit to confirm or roll out MS diagnosis in such cases. Therefore, we lack biological markers that can help in the diagnosis of patients presenting with suspected MS. Many studies have found that serum and cerebrospinal fluid (CSF) cytokines could help to differentiate MS from other diseases such as neuromyelitis optica spectrum disorders (i.e., IL-6) or neurosarcoidosis (i.e., sIL-2R). Serum and CSF kappa free light chains have also shown good diagnosis performance in MS. In daily practice, our MS tertiary center already perform the analysis of CSF concentrations of IL-1β, sIL-2R, IL-6, IL-10, and serum and CSF kappa and lambda free light chains to roll out other central nervous system (CNS) autoimmune diseases in patients presenting with white matter hyperintensities (WMH). Objective: To correlate CSF IL-1β, sIL-2R, IL-6, IL-10, serum and CSF kappa and lambda free light chains with the final diagnosis in patients presenting to our MS tertiary center with suspected MS to identify a specific inflammatory biomarker profil involved in MS and other CNS autoimmune diseases. The methodology: This is an observational study. All patients ongoing a routine diagnostic work-up for suspected MS from june 2020 to june 2022 in our MS tertiary center will be analyzed. Cerebrospinal fluid IL-1β, sIL-2R, IL-6, IL-10, serum and CSF kappa and lambda free light chains will be correlated with the final diagnosis to ultimately find MS associated biomarkers.

Coronavirus disease 2019 (COVID-19) is a highly infectious pandemic disease caused by SARS-CoV-2 virus. Central Nervous System (CNS) complications associated with COVID-19 might be secondary sequelae due to exuberant systemic innate-mediated hyper-inflammation, which may impair neurovascular endothelial function, disrupt blood brain barrier (BBB), activates CNS innate immune signaling pathways, and induces parainfectious autoimmunity, potentially contributing to the CNS manifestations. Although the predominant clinical manifestation of SARS-CoV-2 is characterized by dyspnea, unremitting fever and hypoxemic respiratory failure, neurologic manifestations do occur in most hospitalized SARS-CoV-2 patients and include non-specific encephalopathy, psychosis, meningitis/encephalitis, myelitis, cerebrovascular events, Guillain-Barre' syndrome, and cranial or peripheral neuropathies, such as anosmia and ageusia. To date, data about primary CNS involvement due to neurotropism and direct neuroinvasion are still lacking.

The fetal CNS screening examination during the mid-trimester scan in low-risk pregnancies should include evaluation of the fetal head and spine, using transabdominal sonography. Evaluation of two axial planes allows visualization of the relevant cerebral structures to assess the anatomic integrity of the fetal brain.These planes are commonly referred to as the transventricular and transcerebellar planes. A third plane, the so-called transthalamic plane, is frequently added, mostly for the purpose of biometry. Structures that should be noted in the routine examination include the lateral ventricles, the cerebellum, the cisterna magna, and the cavum septi pellucidi (CSP). Head shape and brain texture should also be noted on these views.

The specific study aims will be: To design and develop the hardware and software of the VR+MT and MR+MT systems. To test the feasibility of the VR+MT and MR+MT systems from the patients and to collect the feedback of users with respect to their experiences. To examine the treatment effects of VR+MT and MR+MT compared to the traditional MT (i.e., control group) in patients with stroke by conducting a randomized controlled trial. To identify who will be the possible good responders to VR+MT and MR+MT based on their baseline motor functions and mental imagery abilities.

All patients undergoing allogeneic or autologous HSCT at the participating centres will be observed. Once a diagnosis of CNS disorder is made, additional data will be reported for these patients. We will identify clinical and diagnostic characteristics such as cerebrospinal fluid (CSF) and neuroimaging patterns, risk factors, response to treatment (including novel antifungal agents such as isavuconazole) and outcome. In addition, risk factors for CNS disorders after allogeneic and autologous HSCT will be analyzed using a prospectively assessed matched control group. In the future, this study might be the basis for an interventional trial (e.g. using a prophylactic approach).

Alzheimer's disease (AD) is the most common cause of dementia and currently has no disease modifying treatments or simple accurate diagnostic tests. The goal of this project is to study how tau (a protein thought to cause AD) is made, transported and cleared in the human body. Better understanding of these processes may lead to improved understanding of AD, earlier diagnosis and a way to evaluate treatment.