Neutrophil Extracellular Traps in Systemic Sclerosis
Systemic Lupus ErythematosusSystemic SclerosisSystemic sclerosis (SSC) is a systemic disease characterized by limited or diffuse cutaneous sclerosis, microangiopathy, overproduction of autoantibodies and variable organ damage due to vasculopathy and/or fibrosis. The loss of self-tolerance is believed to be caused by the dysregulation of both innate and adaptive immune systems and may involve reactive oxygen species (ROS). Neutrophils are potent producers of ROS and may play a role in endothelial cells and fibrobasts dysfunction, as in autoantibodies generation. However, their role in SSC pathogenesis remains to be determined. Recent studies discovered abnormal regulation of neutrophil extracellular traps (NETs) in other auto-immune diseases such as systemic lupus erythematosus (SLE). NETs are web-like structures composed of chromatin backbones and granular molecules. They are released by activated neutrophils through a process called "NETosis". Nets were first described in 2004 as a novel host defense mechanism to trap and kill foreign pathogens. Recent evidence shows that NETs also participate in the pathogenesis of a variety of inflammatory and autoimmune diseases, including SLE. We hypothesis that this phenomenon could be dysregulated in SSC as in SLE and could play a prominent role in the induction of autoimmunity, as well as in the induction and perpetuation of organ damages.
Aerobic Exercise Training in Amyotrophic Lateral Sclerosis
Amyotrophic Lateral SclerosisThe purpose of this study is to compare the safety and the effects of moderate-intensity aerobic endurance training to those of an usual physical therapy intervention on exercise capacity and quality of life in patients with amyotrophic lateral sclerosis (ALS).
Music Therapy Protocol to Support Bulbar and Respiratory Functions in ALS
Motor Neuron DiseaseAmyotrophic Lateral Sclerosis12 moreThis study evaluates potential of music therapy treatment to support breathing, speech, swallow and cough of persons with amyotrophic lateral sclerosis (ALS). Music therapy is the clinical use of music and its elements to enhance human health and wellbeing. Application of music therapy principles in neurorehabilitation allow to treat cognitive, sensory, and motor dysfunctions.
Longitudinal Effect of Vitamin D3 Replacement on Cognitive Performance and MRI Markers in Multiple...
Multiple SclerosisMultiple Sclerosis5 moreThis is a longitudinal single blind randomized trial to test the effects of high compared to low dose vitamin D3 supplementation on cognitive performance at 6 and 12 months, and MRI measures of 12 months duration. A cognitive assessment battery will be administered at baseline, 6 and 12 months. Related clinical data and information on depression and anxiety, lifestyle, and food sources of vitamin D and sun exposure among other variables will also be collected.
Implementation Intention for Physical Activity in Multiple Sclerosis
MotivationMindfulnessThe purpose of this study is to evaluate the effectiveness of an 8-week intervention based on implementation intention (motivation) in patients with multiple sclerosis on objectively measured physical activity.
A Study to Evaluate AP-101 in Familial and Sporadic Amyotrophic Lateral Sclerosis (ALS)
Amyotrophic Lateral SclerosisSingle ascending doses of AP-101 will be administered by intravenous (IV) infusion
Effect of Ocrelizumab on Neuroinflammation in Multiple Sclerosis as Measured by 11C-PBR28 MR-PET...
Multiple SclerosisUsing magnetic resonance-PET (MR-PET) imaging with [11C]PBR28, a second-generation 18kDa translocator protein (TSPO) radiotracer, we have previously demonstrated abnormally high TSPO expression, indicative of microglia activation, across different brain tissue compartments of multiple sclerosis (MS) patients1. In this study, we propose to study the efficacy of ocrelizumab, a humanized monoclonal antibody that has been shown to decrease neuroinflammation in relapsing-remitting multiple sclerosis (RRMS) and progressive multiple sclerosis (MS) patients. We will test these effects by studying a cohort of 24 MS patients (12 RRMS, 12 progressive MS). Participants will be studied before (within 3 months prior to initiating treatment) and after treatment with ocrelizumab (~12 month follow up), a therapeutic drug that will be part of their standard medical care. We will use [11C]PBR28 to help determine changes in neuroinflammation. The purpose of this study is to determine the effects of ocrelizumab treatment on neuroinflammation by analyzing the uptake and distribution of [11C]PBR28 in individuals with multiple sclerosis. The specific aims of the current study are: To assess whether treatment with ocrelizumab in subjects with either relapsing-remitting MS or progressive MS is associated with decreased [11C]PBR28 binding in the cortex and white matter (lesions and normal appearing white matter), suggesting reduced neuroinflammation. To assess whether changes in neuroinflammation under ocrelizumab treatment, as measured by [11C]PBR28 uptake at 12-month follow up relative to baseline, are associated with changes in structural MR metrics of brain tissue damage including white matter lesion load, cortical atrophy, and demyelination in the cortex and in the normal-appearing white matter as measured by magnetization transfer ratio (MTR). To explore whether changes in functional and structural imaging metrics under ocrelizumab are associated with changes in clinical outcome measures.
Effectiveness of a Schema Therapy on Anxiety in Patients With Multiple Sclerosis
AnxietyIt is a multicentric randomized and controlled study comparing a Scheme therapy program versus local practice in RRMS patients with anxiety. Patients will assist to twenty once-weekly group sessions with a 6-month follow up after the end of the programme. The main criteria is the impact of schema therapy on anxiety evaluated by the questionnaires at the end of the program and at the end of the 6-month follow-up.
Computer Assisted Cognitive Rehabilitation for Persons With Multiple Sclerosis
Multiple SclerosisThe effects of multiple sclerosis (MS) on cognition, thought to occur in 50-75% of persons with MS, have gained increasing recognition as one of the major disabling symptoms of the disease. While numerous studies have addressed the emotional and physical impact of MS, little attention has been given to strategies that might help manage the cognitive changes commonly experienced by persons with MS. The proposed study will test a novel computer-assisted cognitive rehabilitation intervention, MAPSS-MS (Memory, Attention, & Problem Solving Skills for Persons with MS). The MAPSS-MS integrates the powerful effects of group interventions to build self-efficacy for new cognitive compensatory strategies/behaviors with individual home-based computer-assisted training. The computer training will assist individuals to develop cognitive skills that they can apply to everyday life using the compensatory strategies learned in the class sessions. In the recently completed exploratory study with 61 persons with MS (R21NR011076), the eight-week MAPSS-MS intervention was acceptable and feasible and had medium to large effects on the use of compensatory strategies and performance on neuropsychological tests of verbal memory. The proposed study will test the refined MAPSS-MS intervention with a larger more diverse sample (N=180) across multiple sites, extend the period of post-intervention follow-up to 6 months and establish whether performance improvements on neuropsychological tests make the important transfer to improved neuro-cognitive functioning in everyday life. The specific aims of this study are to: (1) Evaluate the efficacy of the novel MAPSS-MS cognitive rehabilitation intervention to improve overall neuro-cognitive competence in activities of daily living including verbal memory performance, use of compensatory cognitive strategies and performance on cognitive-related instrumental activities of daily living (IADL) among persons with MS; (2) Evaluate the efficacy of the MAPSS-MS intervention to improve self-efficacy and related aspects of cognitive performance (non-verbal learning/memory, information processing speed and attention, verbal fluency and complex scanning and tracking) among persons with MS; and (3) Determine the number of intervention participants who achieve and maintain their self-identified cognitive goals three and six months following the intervention. The effects of the intervention on outcome variables will be assessed using a randomized controlled trial design with a comparison group receiving usual care computer games. Measurements of study variables will occur at baseline, immediately after the MAPSS-MS intervention, and three months and six months after the intervention is complete. Statistical analysis will include descriptive statistics and HLM analysis to account for the nested design. The intent-to-treat approach will be used. Public Health Statement: This research will provide new knowledge about an innovative intervention to improve memory, use of compensatory strategies, and performance of cognitive activities and instrumental activities of daily living for persons with MS. If effective, the intervention would provide a new and feasible approach to target a serious, debilitating problem commonly experienced by persons with MS.
Self-administered Hyperinsufflation Chest on the Risk of Low Respiratory Infection in Patients With...
Multiple SclerosisIn patients with neuromuscular disease, chest mobilization by hyperinsufflation slows respiratory decline by almost 80% compared to controls, and prevents complications like pneumonia, atelectasis and respiratory distress. This insufflation technique improves the airway clearance and reduces the need for invasive ventilation. It also improves CV and DEPtoux in patients with neuromuscular pathology