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The aim of the proposed research is to compare two commonly used pediatric strength testing measures: handheld myometry (HHM) and CINRG Quantitative Measurement System (CQMS), with the goal of identifying a sensitive and valid tool for measuring muscle strength in children with DMD. The data obtained from this study will be used to make recommendations for strength measurement endpoints in prospective muscular dystrophy trials and provide more reliable and accurate recommendations in the clinic for strength assessment. This study will be performed at six participating sites in the Cooperative International Neuromuscular Research Group (CINRG).
We propose to compare the reliability of CQMS vs. HHM in the DMD population. The importance of this study is to be able to compare the results of clinical trials done by different networks using distinct strength endpoints. If results indicate a distinct difference in reliability of one tool over the other, a standardized tool could be established for research groups throughout the world to interpret strength in the context of clinical trials. If the results indicate minor differences then it would be possible to interpret and compare/contrast strength measurements used in different studies.
Understanding the relationship between the HHM vs CQMS will help us examine other surrogate measures capable of predicting functionality that are based on strength measurements.
Observational Model: Case-Crossover, Time Perspective: Prospective
Duchenne Muscular Dystrophy
Children's National Medical Center
District of Columbia
Cooperative International Neuromuscular Research Group
Published on BioPortfolio: 2014-08-27T03:13:35-0400
The purpose of this study is to determine if ACE-031 is safe and well-tolerated in children with Duchenne Muscular Dystrophy (DMD) and to select the optimal doses of ACE-031 in terms of sa...
The objective of this study is to evaluate the efficacy after 24-week repeated oral doses of TAS-205 in patients with Duchenne Muscular Dystrophy (DMD) in an exploratory manner.
Data on preventive therapy in Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) affected individuals without cardiac involvement are very limited and currently lacking ...
The purpose of this research study is to understand the walking patterns, strength and function changes of boys with Duchenne muscular dystrophy on/off corticosteroids to determine the bes...
OBJECTIVES: I. Characterize the effect of prednisone on muscle protein metabolism in patients with Duchenne muscular dystrophy. II. Determine whether prednisone changes levels of insuli...
Prolonged ambulation is considered important in children with Duchenne muscular dystrophy (DMD). However, previous studies analyzing DMD gait were sensitive to false positive outcomes, caused by uncor...
Duchenne muscular dystrophy (DMD) is an x-linked myopathy affecting one in 3,600 - 6,000 live male births. The aim of this study was to gain further insight into how parents experience caring for boys...
We report a first-in-patient study of vamorolone, a first-in-class dissociative steroidal anti-inflammatory drug, in Duchenne muscular dystrophy. This 2-week, open-label Phase IIa multiple ascending d...
Duchenne muscular dystrophy is an X-chromosome-linked genetic disorder (locus Xp21). Involvement of the cardiovascular system is characterized by fibrous degeneration/replacement of myocytes with cons...
Although prolonged ambulation is considered important in children with Duchenne muscular dystrophy (DMD), articles describing gait deviations in DMD are scarce.
A muscle protein localized in surface membranes which is the product of the Duchenne/Becker muscular dystrophy gene. Individuals with Duchenne muscular dystrophy usually lack dystrophin completely while those with Becker muscular dystrophy have dystrophin of an altered size. It shares features with other cytoskeletal proteins such as SPECTRIN and alpha-actinin but the precise function of dystrophin is not clear. One possible role might be to preserve the integrity and alignment of the plasma membrane to the myofibrils during muscle contraction and relaxation. MW 400 kDa.
A strain of mice arising from a spontaneous MUTATION (mdx) in inbred C57BL mice. This mutation is X chromosome-linked and produces viable homozygous animals that lack the muscle protein DYSTROPHIN, have high serum levels of muscle ENZYMES, and possess histological lesions similar to human MUSCULAR DYSTROPHY. The histological features, linkage, and map position of mdx make these mice a worthy animal model of DUCHENNE MUSCULAR DYSTROPHY.
An X-linked recessive muscle disease caused by an inability to synthesize DYSTROPHIN, which is involved with maintaining the integrity of the sarcolemma. Muscle fibers undergo a process that features degeneration and regeneration. Clinical manifestations include proximal weakness in the first few years of life, pseudohypertrophy, cardiomyopathy (see MYOCARDIAL DISEASES), and an increased incidence of impaired mentation. Becker muscular dystrophy is a closely related condition featuring a later onset of disease (usually adolescence) and a slowly progressive course. (Adams et al., Principles of Neurology, 6th ed, p1415)
MUSCULAR DYSTROPHY that occurs in VERTEBRATE animals.
A heterogenous group of inherited muscular dystrophy without the involvement of nervous system. The disease is characterized by MUSCULAR ATROPHY; MUSCLE WEAKNESS; CONTRACTURE of the elbows; ACHILLES TENDON; and posterior cervical muscles; with or without cardiac features. There are several INHERITANCE PATTERNS including X-linked (X CHROMOSOME), autosomal dominant, and autosomal recessive gene mutations.
Pediatrics is the general medicine of childhood. Because of the developmental processes (psychological and physical) of childhood, the involvement of parents, and the social management of conditions at home and at school, pediatrics is a specialty. With ...
Arthritis Fibromyalgia Gout Lupus Rheumatic Rheumatology is the medical specialty concerned with the diagnosis and management of disease involving joints, tendons, muscles, ligaments and associated structures (Oxford Medical Diction...
Muscular dystrophy is a group of degenerative inherited disorders causing muscle weakness and loss of muscle tissue. The different types are Becker muscular dystrophy, Duchenne muscular dystrophy, Emery-Dreifuss muscular dystrophy, Facioscapulohumeral mu...