Active clinical trials for "Shy-Drager Syndrome"

The purpose of this study is to test the hypothesis that endothelin plays a role in the pathogenesis of supine hypertension in pure autonomic failure by increasing vascular resistance. To gauge its contribution to blood pressure regulation, pure autonomic failure and multiple system atrophy patients with supine hypertension will undergo a medication testing with the endothelin blocker, BQ123. We will compare the hemodynamic effects between PAF and MSA patients. Our primary endpoint will be the decrease in blood pressure during the administration of this compound.

This study seeks to establish the sensitivity and specificity of what appears to be a unique brainstem biomarker of Parkinson's Disease (PD) - an electrically induced olygosynaptic nasotrigeminal reflex response - in differentiating early stage PD from normal controls and from patients with various other neurodegenerative diseases. This study will additionally compare the biomarker to olfactory testing.

Progressive Supranuclear Palsy and related disorders (PRD) are debilitating, costly, and understudied conditions. Improving access to comprehensive, specialized, in-home patient care offers the potential to minimize the downward spiral of morbidity and preventable healthcare utilization. The aim of this study is to test whether and to what degree an interdisciplinary home visit program will improve patient- and caregiver-reported outcomes, and to identify unmet needs in this population.

Multiple system atrophy (MSA) is a disorder of the nervous system of unclear cause. In MSA there is degeneration (progressive loss) of nerve cells in several brain and spinal cord regions. The result is a variety of symptoms, from physical (parkinsonism, ataxia, incoordination, falls, slowness) to autonomic (fainting, bladder incontinence, sexual dysfunction) to sleep problems (dream enactment, sleep apnea). This research aims to help us better understand the patterns and timing of nerve degeneration relatively early in the disease, and how this affects symptoms and progression. For instance: Does MSA affect certain nerves that stimulate heart pumping? If so, does the severity of loss of heart nerves affect disease progression and survival? It is thought that MSA does not affect memory and thinking much, unlike other diseases (such as Parkinson's). Is this accurate? Is there loss of nerves that transmit acetylcholine (a neurochemical important in mental functioning)? What can we learn about mood and sleep in MSA, through visualizing the serotonin system in the brain? How does this relate to symptoms that subjects report in these often underappreciated areas? To answer these and other questions, investigators will take images of specific nerves in the brain and heart using Positron Emission Tomography (PET) scans. Such imaging gives us information that cannot be obtained from MRIs and CT scans. We will measure the levels of several nerve cell types: serotonin, acetylcholine, and norepinephrine. Subjects will also have many standardized assessments including quality-of-life and symptom assessments, neurological examination, autonomic assessments, neuropsychological assessments, coordination tests, and even assessments of vision and sense of smell. By pooling these results from many MSA patients, and comparing with other diseases (such as Parkinson's disease) we hope to gain a better understanding of what is happening early in MSA. Such knowledge could be very valuable in future efforts to develop better therapies in this rare disease.

The PET tracer [F18]-FDDNP has a specific affinity for lesions containing tau protein. The study consists of two phases: In the first (cross-sectional) phase it will be assessed the uptake of [18F]-FDDNP in 10 cases with progressive supranuclear palsy (PSP, a tauopathy) en 10 with multi-system atrophy (MSA, a non-tauopathy), along with 20 individuals with Unclassifiable Parkinsonism, as previously defined in a European cohort study. In the second (longitudinal) phase it will be prospectively followed the 20 unclassifiable patients (at 6, 12 and 18 months) by means of validated scales and accepted diagnostic criteria in order to try to correlate their eventual clinical diagnosis with baseline PET findings. On this basis, we endeavour to estimate the ability of this technique to detect in vivo underlying tau pathology in subjects initially unclassifiable on clinical grounds. We hypothesized that: Patients with clinically definite PSP will present an increased uptake in basal ganglia, brainstem and cerebellum. Patients with clinically defined MSA will not present specific uptake. Part of unclassifiable patients with parkinsonism will present a pattern of uptake similar to patients with clinically defined PSP and this part along the clinical follow-up will be meet clinical criteria for diagnose of PSP

The gut may be a portal of entry for agents that cause or contribute to the causes of Parkinson's disease (PD). The investigators are studying changes in the normal population of gut flora and in intestinal permeability and their associations with early PD.

To determine whether retinal abnormalities, as measured by high definition optical coherence tomography (HD-OCT) and visual electrophysiology techniques can be used as a clinical biomarker to monitor disease progression overtime in patients with Parkinson disease. To establish whether these measures can be used to identify patients with PD in the premotor phase. To define the rate of progression of retinal abnormalities in PD (both in the motor and premotor stages) for potential use as a clinical outcome measure

The Synuclein-One Study will be evaluating α-synuclein in patients with Parkinson's disease, Multiple System Atrophy, Dementia with Lewy bodies and Pure Autonomic Failure. Using a simple diagnostic test will improve clinical accuracy in diagnosing, earlier diagnosis, and distinguish between neurodegenerative diseases.

The aim of the project is to develop the first alpha-synuclein (a-syn)-specific PET tracer. The research phase will exploit ACI's proprietary MorphomerTM library and extensively optimized screening workflow. Promising PET-tracer candidates will be tested for their ability in detecting a-syn pathology in patients with a range of Parkinsonian conditions with different a-syn levels and distributions, comprising hereditary forms of PD and other synucleinopathies.

The purpose of this study is; compare respiratory function parameters and respiratory muscle strength in patients with MSA compare to healthy controls, and to evaluate the results of SNIP and PImax in measuring inspiratory muscle strength in MSA patients.