Active clinical trials for "Muscular Diseases"

The researcher wants to explore the genetic causes of muscle disease. The researcher is particularly interested in muscle disorders that occur in combination with diseases of bone that appear to be passed on from generation to generation. Diffuse Optical Spectroscopy will measure the concentrations of blood, water, and lipids (fats, for example) in your tissues. This device essentially measures the color of tissues in order to determine tissue physiology (its physical and chemical processes).

Analyze the various causes of breakdown of muscle fibers in hospitalized patients. Analyze the characteristics of these patients in Taiwan (including the drugs history, risk factors and the incidence of complications).

Critical illness myopathy (CIM) is a disabling condition that develops in critically ill patients. The syndrome is not only a cause of prolonged intensive care hospitalisation but also a main reason for delayed recovery. Critical illness myopathy presents as diffuse muscle weakness and failure to wean from mechanical ventilation. The pathogenesis of CIM is unclear. The proposed mechanisms for critical illness myopathy include muscle membrane depolarization, circulating depolarizing factor, and an endotoxin that reduces muscle sodium channel availability at depolarized membrane potentials. The electrophysiological diagnosis of CIM diagnosis is done by electromyography (EMG). In order to be able to detect changes in EMG, more than 2-3 weeks' time is required. Moreover the findings resemble other myopathies and are unspecific. EMG studies in paralysed muscles and sometimes unconscious patients is difficult or even impossible Since the 1950s, it has been attempted to investigate the muscle cell membrane properties, but it has not been possible to develop a clinically applicable diagnostic method. The novel electrophysiological method MVRCs is a possible future diagnostic method. It's more sensitive to muscle cell membrane changes than existing methods and it is simple enough to use in multiple clinical settings. The objective of this study is to investigate the utility of MVRCs in the early diagnosis of critical illness myopathy by investigating the muscle membrane properties in sepsis patients, who are in risk of developing CIM. In addition, this will contribute to a better understanding of the pathophysiology of critical illness myopathy. The study will enrol 70 participants in total, divided in to 2 groups of 20 patients aged ≥18 years; 1) patients with sepsis at intensive care units and 2) patients with chronic renal failure and uremia, and 30 sex- and aged-matched healthy participants. All subjects are to undergo neurological examinations, electromyography, nerve conduction studies, direct muscle stimulation and MVRCs. Blood tests will be taken in all patients. Patients with sepsis will be examined every week in 3 weeks. The presence of probable CIM will be determined on the 4th examination. Healthy participants and patients with chronic renal failure will only be examined in 1 occasion. The primary outcomes will be MVRCs parameters which will be compared between patients and healthy participants. Furthermore, MVRCs parameters will be correlated to blood sample results.

Autoimmune necrotizing myopathies (AINM) in adult patients are characterized by severity of muscle damage, presence of necrosis with little inflammation on muscle biopsy and anti-HMGCR or anti-SRP auto-antibodies. Data on AINM in children are currently lacking. The purpose of this study is to specify the characteristics at AINM diagnosis, treatments and evolution of juvenile AINM with anti-HMGCR or anti-SRP antibodies.

GNE myopathy, an ultra-rare disease, is a severe progressive myopathy that typically presents in early adulthood as weakness in the distal muscles of the lower extremities and progresses proximally, leading to a loss of muscle strength and function, and ultimately a wheelchair-bound state. The rate of progression is gradual and variable over the course of 10-20 years or longer. There is a need to understand the world wide epidemiology of this ultra-rare condition, better understand a long-term disease course and the progression of disease-specific features, support translational research by evaluating burden illness and support clinical research recruitment. Therefore, the study will longitudinally collect information via an online patient registry platform.