View clinical trials related to Cerebral Amyloid Angiopathy.
Filter by:Background: In stroke patients treated with intravenous thrombolysis (IVT), presence and high number of strictly lobar cerebral microbleeds (compatible with cerebral amyloid angiopathy, CAA) seems to be associated with increased risk of hemorrhagic transformation, symptomatic hemorrhagic transformation, remote hemorrhage, and poor functional outcome. Some of these reported CAA patients with cerebral microbleeds also had chronic lobar intracerebral haemorrhage. Few data is available on IVT-treated CAA patients showing cortical superficial siderosis. There are no reports studying factors associated with brain hemorrhagic complication or functional outcome inside a group of IVT-treated CAA patients. Our aim was to evaluate brain hemorrhagic complications on 24h-CT and functional outcome after IVT in stroke patients with CAA features on pre-IVT MRI. Methods: In our stroke center, IVT decision in patients with CAA MRI features is left at the discretion of the treating physician. We retrospectively screened pre-IVT imaging of 959 consecutive IVT-treated stroke patients (between January 2015 and July 2022) without ongoing anticoagulation therapy for probable CAA MRI features defined by modified Boston criteria. After exclusion of 119 patients with lacking MRI (n=47), with MRI showing motion artefacts (n=49) or with alternative chronic brain hemorrhage cause on MRI (n=23), 15 IVT-treated patients with probable CAA on pre-IVT MRI were identified. In these 15 patients, clinical, biological and MRI characteristics were compared between patients with vs. without post-IVT hemorrhage and between patients with poor (MRS 3-6) vs. good (MRS 0-2) functional outcome at discharge.
White matter hyperintensities (WMH) are one of the small vessel disease-related MRI characteristics of both cerebral amyloid angiopathy (CAA) and hypertensive arteriopathy (HA). WMH tend to show a peri-basal ganglia pattern in HA, whereas a multiple subcortical spots pattern can be observed in CAA. Periventricular WMH (PVWMH) have been reported to be posterior predominant using a semiautomated segmentation method and logarithmic transformation, not used in daily clinical practice. In these studies including CAA patients, patients initially presented with haemorrhage-related symptoms. In another study analysing PVWMH and cerebral amyloid evidence in patients with mild cognitive impairment, frontal PVWMH burden was associated with high uptake on florbetapir-PET whereas parietal and occipital PVWMH burden was associated with low CSF-amyloid-beta. The aim of this study is the descriptive comparative analysis of the distribution of PVWMH between CAA and HA patients with radiological tools available in daily practice.
Cerebellar superficial siderosis (SS) has been recently reported to be present in about 10% of both hereditary (n=50) and sporadic (n=46) cerebral amyloid angiopathy (CAA) patients on 3T MRI using susceptibility-weighted imaging (SWI) in the majority of patients. In that study, cerebellar SS was associated with a higher number of supratentorial lobar and superficial cerebellar macrobleeds (although cerebellar SS was not directly located adjacent to these cerebellar macrobleeds). It is unclear if cerebellar SS is caused by in situ leakage of cerebellar leptomeningeal vessels or rather represents hemorrhagic diffusion from cerebellar parenchymal micro/macrobleeds or from supratentorial bleeding sources via the tentorium cerebelli (TC).
Cerebral Amyloid Angiopathy (CAA) is one form of disease of the small vessels of the brain and can cause frequent cerebral hemorrhages as well as other types of stroke. The aim of the research was to examine the balance of the body in patients after a stroke and to determine how the tension of selected muscles of the cervical spine changes under the conditions of statics and dynamics, depending on the visual control or its absence.
Transient focal neurological episode (TFNE) is the most frequent presenting symptom of convexity subarachnoid haemorrhage (cSAH) in elderly patients with non-traumatic cSAH with suspected, possible or probable cerebral amyloid angiopathy (CAA). The aim of our study was to analyse in detail clinical and MRI characteristics in these patients. Methods: We performed a retrospective study analysing baseline, acute clinical symptom (TFNE and headache), and MRI characteristics (acute cSAH and chronic CAA features) of consecutive elderly (≥55 years) patients, recruited and registered in the stroke database, between june 2008 and october 2020 of two centres (Nîmes and Montpellier University Hospital, France), presenting with cSAH with suspected, possible, or probable CAA.
Until now there is no medical treatment and/or intervention that can slow, stop or reverse the underlying neurodegenerative of Alzheimer's disease (AD). The goal of this study is to demonstrate "Oleocanthal rich-extra-virgin olive oil (EVOO) consumption stops or delay mild cognitive impairment conversion to AD by restoring the blood-brain barrier (BBB) function in humans". Specific Aims: 1. Evaluate effect of EVOO on the brain function by functional MRI (fMRI) imaging, and BBB function by dynamic contrast-enhanced MRI (DCE-MRI). 2. Evaluate effect of EVOO on cognitive function and on selected biomarkers
In this project, we will try to enhance the diagnostic potentials of amyloid PET in CAA by combination of dynamic amyloid PET with MRI SWI and MR perfusion images. We will also try to investigate the roles of CAA in patients with drug-related ICH and validate the accuracy of clinical CAA diagnostic criteria. In addition, we will try to study the characteristics of long-term progression of amyloid deposition in CAA patients. This project will enroll 100 patients with ICH, 30 patients with AD, and 30 control subjects. Each patient will receive the above image studies, followed by data analysis and comparison.
The Cerebral Amyloid angiopathy (CAA) is the leading cause of cortical hemorrhage after 65 years. The presence of cerebral infarction is also reported anatomically in the AAC. MRI studies of these infarcts are rare. They are described as punctate, cortical silent. Frequency and pathophysiology is poorly understood. The investigators put the question of a link with hemorrhagic lesions of the AAC.
Cerebral Amyloid Angiopathy (CAA) is a condition caused by the build-up of a protein called amyloid, predominantly Aβ40, within the walls of brain blood vessels, especially those blood vessels in the occipital lobe of the brain. Probable CAA may be defined as two or more hemorrhages in the brain cortex in individuals 55 years of age or older. This study will examine the study drug (PF-04360365) vs. placebo (saline) at 10 mg/kg - Day 1 and the maintenance dose of the study drug (PF-04360365) vs. placebo (saline) at 7.5mg/kg on Days 30 and 60. Subjects will be followed for 6 months after receiving the last dose of study medication.
The main objective of this study is to evaluate the safety, tolerability and pharmacokinetics of Cerebril™ in Cerebral Amyloid Angiopathy (CAA) patients who have had lobar cerebral hemorrhage.