Active clinical trials for "Brain Diseases"

Phase II randomised control trial of whole body cooling in mild neonatal encephalopathy.

This study aims to determine the safety of HB-adMSC infusion and treatment effects of HB-adMSC infusion on brain structure, neurocognitive/functional outcomes, and neuroinflammation after subacute and chronic neurological injury in adults.

The main goals of this study are to further determine whether the study drug donanemab is safe and effective in participants with Alzheimer's disease and to validate video scale assessments.

This pilot study aims to assess if participants that meet the criteria for a TES diagnosis have a specific tau deposition profile on PET scanning using the PET tau binding ligand - [18F] PI-2620. It is hoped this study will highlight potential diagnostic tests of TES diagnosis, the in-life correlate of CTE.

Readmission rates for patients with hepatic encephalopathy due to end stage liver disease are high. Hyperammonemia contributes significantly to encephalopathy and occurs because of impaired hepatic ureagenesis and increased skeletal muscle proteolysis. We propose a randomized, 6-month nutritional intervention in cirrhotic patients who have had at least 1 admission for hepatic encephalopathy within the last 6 months. We hypothesize that a combination of late evening and early morning protein supplement (Ensure Enlive) will decrease recurrent hepatic encephalopathy and consequent readmission rates by lowering skeletal muscle proteolysis and improved lean body mass.

Minimal hepatic encephalopathy (MHE) is a subclinical cognitive impairment and represents the mildest type of hepatic encephalopathy (HE). Portal hypertension is the main complication of cirrhosis and is responsible of severe complications such as HE. The consequence of portal hypertension is the formation of the spontaneous portosystemic shunts (SPSS). The relationship between the SPSS and their characteristics and the prevalence of MHE in patient with cirrhosis is poorly known. The main objective of this study is to evaluate the MHE in patients with cirrhosis and portal hypertension.

Background: About 5 million adults in the U.S. have Alzheimer s disease or another adult-onset neurodegenerative disorder. Many studies have found that inflammation in the brain contributes to these diseases. Researchers want to find a better way to measure this inflammation. Objective: To learn whether COX-1 and/or COX-2 is elevated in the brains of individuals with neurodegenerative brain disease compared to healthy volunteers. Eligibility: Adults age 18 years and older in good general health who have an adult-onset neurodegenerative dementia, such as AD, FTD, corticobasal syndrome, or Huntington s disease and healthy adult volunteers enrolled in protocols 01-M-0254 or 17-M-0181. Design: Participants will be screened with medical history, physical exam with vital signs, and lab tests. They will have a neuropsychological testing. Their heart function will be measured. Participants will have a magnetic resonance imaging (MRI) scan. The MRI scanner is a metal tube surrounded by a strong magnetic field. Participants will lie on a table that slides in and out of the tube. The machine makes noise. Participants will get earplugs. Participants will have 2 PET scans. They will be injected with the study drugs through an intravenous catheter placed in an arm vein. The PET scanner is shaped like a doughnut. Participants will lie on a bed that slides in and out of the scanner. A plastic mask will be molded to their head to keep them from moving. A thin plastic tube will be put into an artery at the wrist or elbow crease area. This will be used to draw blood during the scan. Participants will have 2-3 study visits. Participation lasts 1 week to 4 months, depending on scheduling.

The objective of this study is to evaluate, using MRI, the microstructural consequences and the onset of any cognitive impairment in professional soccer players at the end of their career, who have experienced repeated minor head injuries. Over the long term, these head injuries could lead to morphological lesions and have an impact on soccer players' cognitive skills. The main evaluation criterion corresponds to the modifications found on MRI in the professional soccer player group (diffusion tensor, cerebral perfusion, fMRI, cerebral volumetry and cortical thickness, spectroscopy, susceptibility imaging). This is an exposure/nonexposure study assessing the onset of MRI abnormalities (diffusion tensor, cerebral perfusion, fMRI, volumetry and cortical thickness, spectroscopy, susceptibility imaging) in professional soccer players exposed to repeated mild head injuries, who are either at the end of their career or retired for approximately 10 years, compared to high-level athletes not exposed to head injuries.

Neonatal anoxia-ischemia causes significant neurodevelopmental disorders. In this study the investigators want to better understand the interactions between the nervous and the hemodynamic cerebral systems during the adaptation of the neonate to ectopic life just after birth. Birth is an at risk situation of neonatal anoxic ischemia and the lack of objective criteria for cerebral tissue oxygenation has consequences on neuronal activity. Ph cord analysis is inadequate and only indirectly reflects the state of cerebral oxygenation. Both neuronal and vascular systems are part of the same functional entity and the analysis of their interactions is likely to reveal some early malfunctions of these networks. In this study, the investigators want to develop a multi-scale, multimodal approach that allows simultaneous interrogation of both neuronal and vascular compartments during the 15 minutes after delivery. The investigators will record, with the aid of a single sensor placed on the scalp of the child, the electroencephalogram and the cerebral tissue oxygenation. The investigators will measure interactions by means of correlation analysis between both signals.

Rationale: Hepatic encephalopathy (HE) is a major and common complication in patients with liver cirrhosis. HE can be classified in the extensive range of neurocognitive deterioration as minimal HE (MHE), covert HE (grade I), or overt HE (OHE, grade II-IV). Liver cirrhosis is the most common cause of portal hypertension (PH). Patients who develop complications of PH, like variceal bleeding or refractory ascites, can benefit from a Transjugular Intrahepatic Portosystemic Shunt (TIPS) placement. Unfortunately, post-TIPS HE is a common and often severe complication. Incidence of new onset or worsening of HE after TIPS is approximately 20-45%. Currently there is no strategy to prevent post-TIPS HE.