Presentation
The features described expand the clinical presentation of this myopathy, and may lead to a better understanding of its etiology. [ncbi.nlm.nih.gov]
Histologically, reducing bodies contain a substance that can reduce dihydroxydinaphthyl disulfide, confirming that sulfhydryl groups are present. [medlink.com]
Neuromuscular syndromes are presented clinically either as a case study or as an overview from the literature, accompanied by text presenting molecular defects, and differential diagnosis. [books.google.com]
Entire Body System
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Death in Childhood
Death in childhood is frequent in the severe form of the disease, due to respiratory failure. [uniprot.org]
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Pediatric Disease
Pediatric disease onset at age 16 years was found in 8 patients. [ojrd.biomedcentral.com]
Course
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Severe Clinical Course
All mutations in this residue were de novo and were associated with a severe clinical course, in particular in one male patient (H123Q). [ncbi.nlm.nih.gov]
Gastrointestinal
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Muscle Rigidity
Malignant Hyperthermia Malignant hyperthermia is a severe reaction to anesthetic agents and depolarizing muscle-blocking agents that manifests as muscle rigidity, fever, muscle necrosis, myoglobinuria, metabolic acidosis, kidney failure, and cardiac arrhythmias [clevelandclinicmeded.com]
Cardiovascular
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Mitral Valve Prolapse
She is, to our knowledge, the oldest reported case and the only patient described with severe mitral valve prolapse and scoliosis. [ncbi.nlm.nih.gov]
Musculoskeletal
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Proximal Muscle Weakness
Onset during childhood or adulthood is characterised by mainly proximal muscle weakness, a rigid spine syndrome and a slowly progressive disease course. [rarediseases.info.nih.gov]
She developed at 10 months a psychomotor retardation with short and stiff neck, a progressive malignant scoliosis with axial and proximal muscle weakness, pelvic stiffness and shoulder girdles. She presents asymmetric hypertrophic cardiomyopathy. [medworm.com]
She had proximal muscle weakness, progressive spinal rigidity, and scoliosis. There was no apparent cardiac involvement. [omim.org]
Patients typically present with proximal muscle weakness of legs more than arms, with no sensory involvement. [clevelandclinicmeded.com]
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Flexion Contracture
At the age of five years a male child started to develop a progressive rigid spine, torsion scoliosis, and flexion contractures of his elbows, knees, hips, and ankles owing to severe proximal and distal muscle weakness. [ncbi.nlm.nih.gov]
Distal arthrogryposis has also been described as due to a mutation in TPM2 .20 Presentation is at birth with flexion contractures of hands and feet. [emedicine.medscape.com]
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Hand Enlargement
On the other hand, enlarged densely stained myonuclei, in addition to the presence of many reducing bodies, were striking on light microscopy, and chromatin condensation was seen on electron microscopy. [ncbi.nlm.nih.gov]
Psychiatrical
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Psychomotor Retardation
She developed at 10 months a psychomotor retardation with short and stiff neck, a progressive malignant scoliosis with axial and proximal muscle weakness, pelvic stiffness and shoulder girdles. She presents asymmetric hypertrophic cardiomyopathy. [medworm.com]
retardation and characteristic facies-2, see UNC80 deficiency infantile leukoencephalopathy and megalencephaly, see Megalencephalic leukoencephalopathy with subcortical cysts Infantile Multiple Carboxylase Deficiency, see Holocarboxylase synthetase deficiency [herenciageneticayenfermedad.blogspot.com]
Onset
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Onset in Infancy or Childhood
[…] in those with RYR1 mutations Core–rod myopathy AD/AR AR AD α-Actin 1 ( ACTA1 ) Nebulin ( NEB ) Kelch repeat and BTB/ ( KBTBD13 ) Onset in infancy or childhood. [neurology.mhmedical.com]
Neurologic
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Foot Drop
His mother, on the other hand, noticed foot-drop at the age 29, but the clinical course was rapidly progressive, and she was wheelchair-bound at 34years. Both patients had generalized muscle weakness and atrophy and with mild CK elevation. [ncbi.nlm.nih.gov]
The first symptoms usually involve weakness of the lower extremities, with affected individuals often presenting with foot drop. Age-of-onset ranges from late teens to the fourth decade. [genedx.com]
Associated clinical findings include asymmetric weakness, foot drop and dysphagia. [ 10 ] Weakness is often asymmetrical in contrast to polymyositis. [patient.info]
Centronuclear myopathy: weakness of voluntary muscles, including those on the face, arms, legs, and trunk; drooping upper eyelids; facial weakness; foot drop; affected muscles almost always lack reflexes. [healthofchildren.com]
Workup
After complete workup, its frequency fell to 14%. [nature.com]
BAG3 should be included in the genetic workup of MFM patients, even in cases with an adult onset and a mild phenotype. [ojrd.biomedcentral.com]
Other Pathologies
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Myocardial Fibrosis
Baseline clinical and echocardiographic characteristics were compared among patients with and without myocardial fibrosis by card... [medworm.com]
Miura K, Shirasawa H: Congenital muscular dystrophy of the Fukuyama type (FCMD) with severe myocardial fibrosis. A case report with postmortem angiography. Acta Pathol Jpn 1987;37:1823–1835. [karger.com]
Biopsy
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Muscle Biopsy showing Inclusion Bodies
In both girls, serum creatine kinase was increased, and skeletal muscle biopsies showed inclusion bodies that stained with NBT. [omim.org]
Treatment
Part one discusses the approach to neuromuscular disorders, covering principles and basics, neuromuscular investigations, and assessment and treatment of neurological disorders. [books.google.com]
CLOSE Medical Disclaimer The medical information on this site is provided as an information resource only, and is not to be used or relied on for any diagnostic or treatment purposes. [diseaseinfosearch.org]
Management and treatment Management is supportive and should be multidisciplinary (involving a neurologist, orthopaedic surgeon and physical therapist). [orpha.net]
Prognosis
Prognosis The prognosis is generally severe: disease progression results in loss of ambulation, and death due to respiratory failure occurs even in patients with later-onset slowly progressive forms of the disease. Last updated: 4/28/2008 [rarediseases.info.nih.gov]
Prognosis The prognosis is generally severe: disease progression results in loss of ambulation, and death due to respiratory failure occurs even in patients with later-onset slowly progressive forms of the disease. [orpha.net]
Progressive dysphagia is associated with a poorer prognosis and a poorer quality of life. [patient.info]
Treatment and prognosis At the time of writing there is no definitive cure nor a standard course of treatment for Inclusion body myositis. The disease is generally unresponsive to corticosteroids and immunosuppressive drugs 4. [radiopaedia.org]
[…] muscles Difficulty with walking Weakness of upper leg muscles, hips, shoulders, and hands Usually no weakening of muscles on the front of thighs (quadriceps) Normal or slightly elevated creatine kinase levels No muscle weakness in the eyes or heart Prognosis [evolvegene.com]
Etiology
The features described expand the clinical presentation of this myopathy, and may lead to a better understanding of its etiology. [ncbi.nlm.nih.gov]
Etiology Both sporadic and familial cases of RBM are caused by mutations in the gene encoding the four-and-a-half LIM domain 1 protein ( FHL1 ; Xq27.2). [rarediseases.info.nih.gov]
Rhabdomyolysis may also be seen with infectious etiologies, alcohol, and toxic exposures. [clevelandclinicmeded.com]
The treatment entails preventing other complications such as aspiration, and addressing the etiology more specifically. [nature.com]
Epidemiology
Epidemiology The prevalence is unknown: although some sporadic cases have been described, only four families with RBM have been reported in the literature so far. [rarediseases.info.nih.gov]
Summary Epidemiology The prevalence is unknown: although some sporadic cases have been described, only four families with RBM have been reported in the literature so far. [orpha.net]
Interest has been stimulated by the finding that substances deposited in muscle are similar to those found in the brain in Alzheimer's disease - eg, amyloid precursor proteins. [ 7, 8 ] Epidemiology [ 1 ] Most cases present in patients aged over 50 years [patient.info]
Table 1 Clinical Features of Common Myopathies Myopathy Epidemiology Distribution of Weakness Other Systemic Manifestations Acquired Myopathies Dermatomyositis Female male Peak incidence: children and ages 40–60 yr Symmetrical proximal muscle weakness [clevelandclinicmeded.com]
Epidemiology of inclusion body myositis in the Netherlands: a nationwide study. Neurology. 2000;55:1385-1387 3 Phillips BA, Zilko PJ, Mastaglia FL. Prevalence of sporadic inclusion body myositis in Western Australia. [s-ibm.org]
Pathophysiology
This genetic progress has uncovered crucial pathophysiological concepts, thus redefining clinical phenotypes. [ncbi.nlm.nih.gov]
Although the pathophysiology remains poorly understood, inclusions may be involved in processing and assembling ribosomes. [medlink.com]
[…] novel technique to assess muscle velocity recovery cycles (MVRC) that provides information on the polarisation state and T-tubule function of myocytes. 1 This study aimed to identify differences in MVRC parameters in sIBM patients that could provide pathophysiological [jnnp.bmj.com]
Magnesium deficiency: pathophysiologic and clinical overview. Am J Kidney Dis 24: 737 - 752, 1994. Dorup I. Magnesium and potassium deficiency. [arklatexurology.com]
General Pathophysiology Inherited, Autosomal Dominant In myotonic dystrophy 1 (DM1) the CTG repeats on Chromosome 19 affect the 3’ untranslated region of the myotonic dystrophy protein kinase gene (DMPK), causing a decreased expression of the protein. [eyewiki.aao.org]
Prevention
How can cardiomyopathy be prevented? You cannot prevent inherited types of cardiomyopathy. [heart.org]
INTRODUCTION Statins are the primary class of medication used to lower serum cholesterol concentration for both primary and secondary prevention of coronary disease. [uptodate.com]
Preventive treatment for permanent contraction of a muscle ( contractures ) includes physical therapy and bracing. There are currently no drugs available to prevent or treat contractures. [healthcommunities.com]
Prevention As of 2004 there is no way to prevent the genetic mutations that cause myopathies, nor are there ways to prevent metabolic and endocrine failures that result in myopathies. [healthofchildren.com]
Because patients taking prednisone are at risk for osteoporosis, they should receive proper treatment to prevent it. [rheumatology.org]