Presentation
Patients present at birth, or within the first few months of life, with hypotonia, muscle weakness and often with joint contractures. [uniprot.org]
Affected children may present with delay or arrest of gross motor development together with joint and/or spinal rigidity. [ncbi.nlm.nih.gov]
Whether or not there is a structural brain abnormality present, children may experience seizure activity. Laminin is also present in peripheral nerves, leading to peripheral neuropathy. [disabled-world.com]
[…] be present as well. [ipfs.io]
Entire Body System
- Developmental Delay
(requires mutations in both copies of a gene to produce symptoms) CMD with muscle hypertrophy and severe intellectual disability; also called MDC1D Description : onset around 5 months, with low muscle tone and weakness; some muscles enlarged; global developmental [mda.org]
The heterogeneous nature of CMD is reflected by differing degrees of motor developmental delay, physical disability, muscle pathology, elevation of serum creatine kinase (CK) and a variable presence of mental retardation and structural brain defects. [dmd.nl]
Developmental delays and eye (ocular) abnormalities are also common findings. In mild forms of MEB, affected individuals experience delays in attaining developmental milestones, but eventually may be able to walk independently. [rarediseases.org]
Additional indications for polysomnography include testing in the very young or those with developmental delay in whom reliable, consistent pulmonary function testing can be difficult to obtain. [ncbi.nlm.nih.gov]
- Asymptomatic
Heterozygotes (carriers) are asymptomatic. [ncbi.nlm.nih.gov]
Both asymptomatic parents are heterozygous for this variant. [journals.plos.org]
In a subsequent review, Jones et al. [ 24 ] identified a range of electrocardiogram and echocardiogram abnormalities in 7 out of 20 patients (35% ) with more than half being asymptomatic. [content.iospress.com]
- Congestive Heart Failure
[…] the body and resulting in fluid buildup in the heart, lung, and various body tissues (congestive heart failure). [rarediseases.org]
Gastrointestinal
- Failure to Thrive
Affected infants may fail to gain weight and grow at the expected rate (failure to thrive). Developmental delays and eye (ocular) abnormalities are also common findings. [rarediseases.org]
The child showed failure to thrive with height and weight under the 3 rd percentile and a head circumference around the 3 rd percentile. [ijponline.biomedcentral.com]
The severe clinical course is characterized by neonatal muscle weakness, proximal joint contractures, hyper-laxity of the distal joints, failure to thrive, lack of independent ambulation, and severe respiratory impairment by the end of the first decade [cyberleninka.org]
The severe clinical course is characterized by neonatal muscle weakness, proximal joint contractures, hyperlaxity of the distal joints, failure to thrive, lack of independent ambulation, and severe respiratory impairment by the end of the first decade [scielo.br]
- Nausea
[…] of hospitalization, rates of antibiotic use, rates of pulmonary infections, pneumothorax, atelectasis, aspiration and adverse complaints including bloating, constipation, chest pain, dyspnea assessed by a validated breathing assessment, vomiting and nausea [clinicaltrials.gov]
- Vomiting
[…] including rates of hospitalization, rates of antibiotic use, rates of pulmonary infections, pneumothorax, atelectasis, aspiration and adverse complaints including bloating, constipation, chest pain, dyspnea assessed by a validated breathing assessment, vomiting [clinicaltrials.gov]
Cardiovascular
- Heart Disease
Neuromuscul Disord 13: 757–764 PubMed Google Scholar Cox GF, Kunkel LM (1997) Dystrophies and heart disease. Curr Opin Cardiol 12: 329–343 PubMed Google Scholar Davies KE (1997) Challenges in Duchenne muscular dystrophy. [link.springer.com]
Neurologic
- Delayed Milestone
DISCUSSION The clinical presentation of most patients carrying LAMA2 gene mutation is relatively similar with severe congenital hypotonia, delayed milestones with inability to achieve independent ambulation, extensive joint contractures, muscle weakness [content.iospress.com]
Workup
↑ "Congenital Muscular Dystrophy Workup: Laboratory Studies, Imaging Studies, Other Tests". emedicine.medscape.com. Retrieved 2016-04-28. 1 2 "Congenital muscular dystrophy". Guidelines American Academy of Neurology. 2015. Retrieved 28 April 2016. [ipfs.io]
Treatment
See also the following treatment articles: Treatments for Muscular Dystrophy Causes See also causal information: Causes of Muscular Dystrophy Similar Topic Articles Muscular dystrophy Integrin alpha-7 deficiency Names and Terminology References Source [familydiagnosis.com]
There is currently no treatment for these conditions; though optimizing and standardizing care and care delivery can promote significant gains in quality of life and survival. [clinicaltrials.gov]
Key points for each genetic disease are identified to suggest treatment, when available, or the main clinical exams useful in follow-up of patients. [books.google.com]
It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice . [uniprot.org]
The material is in no way intended to replace professional medical care by a qualified specialist and should not be used as a basis for diagnosis or treatment. [orpha.net]
Prognosis
To date, data for all CMD subtypes are insufficient to make any firm genotype / phenotype correlations or to provide definitive prognosis or anticipatory guidance based on CMD subtype. [ncbi.nlm.nih.gov]
膠芽腫において肝臓でのP450を誘導する抗痙攣薬の服薬は理論的には化学療法薬の代謝を促進させてしまうが、予後因子であった Patterns of relapse and prognosis after bevacizumab failure in recurrent glioblastoma. Neurology 2009 73: 1200-1206. [treatneuro.com]
In addition, in the heterozygotes the mutation different from the 3 kb insertion founder mutation, according to its type, could influence the seizure prognosis 178. [scielo.br]
Since both Ullrich and Bethlem phenotypes show clinical and genetic heterogeneity, the molecular diagnosis is helpful for the defining the prognosis and for an accurate genetic counseling. [cyberleninka.org]
Performing clinical and molecular diagnosis is extremely important for genetic counseling, prognosis, and anticipatory treatment and also for prospective treatment. [ijponline.biomedcentral.com]
Etiology
Antibodies against the intracellular domain of the integrin alpha 7A and alpha 7B were used to stain muscle biopsies from 210 patients with muscular dystrophy/myopathy of unknown etiology. [ncbi.nlm.nih.gov]
Integrin alpha 7 beta 1 in muscular dystrophy/myopathy of unknown etiology. Am J Pathol. 2002;160(6):2135–43. [link.springer.com]
The exact genetic mutation and etiology has not been found. Merosin positive CMD is a nonspecific diagnosis; because of this, persons with Merosin positive CMD may have a variable presentation. [disabled-world.com]
Clinical diagnosis of infantile hypotonia is particularly difficult considering the different etiologic factors causing the lesions, the difficulty in localizing the involved CNS area (central vs. peripheral) and the limited role of the diagnostic procedures [ijponline.biomedcentral.com]
Epidemiology
The only epidemiological study of the CMD's comes from a study in northern Italy, which placed disease prevalence at 8 x 106 (Mostacciulo ML, et al, 1996). [disabled-world.com]
Neuromuscular disorders in childhood: a descriptive epidemiological study from western Sweden. [ncbi.nlm.nih.gov]
This study aims to analyze the phenotypes and genotypes of Taiwanese patients with CMD as the epidemiology of CMD varies among populations and has been scantly described in Asia. [journals.plos.org]
The epidemiology of CMD is not well known. Data from an epidemiological study in North-East Italy, considering the period 1979-1993, reported an incidence rate of 4.65 x 10(-5) and a prevalence rate of 6.8 x 10(-6)3. [cyberleninka.org]
The epidemiology of CMD is not well known. Data from an epidemiological study in North-East Italy, considering the period 1979-1993, reported an incidence rate of 4.65 × 10(–5) and a prevalence rate of 6.8 × 10(–6) 3. [scielo.br]
Pathophysiology
Références bibliographiques Arbogast S, Beuvin M, Fraysse B, et al. (2007) Oxydative stress in SEP N1-related myopathy:from pathophysiology to treatment. [link.springer.com]
Chromosome 21, a land of fascinating disorders with unknown pathophysiology. Chromosome 21, from sequence to applications, disease genes and chromosomes, disease maps of the human genome. The DNA sequence of human chromosome 21, sawinska M, Ladon D. [wikivisually.com]
Prevention
Congenital muscular dystrophy affects the integrin alpha 7 gene and prevents the muscle cell from producing the affiliated protein. [digitalcommons.library.umaine.edu]
[…] such as laxatives to prevent constipation, medication for gastroesophageal reflux (GER), and oral caloric supplements as required Trunk bracing in those with severe axial or cervical hypotonia with spinal collapse to prevent severe spinal deformities [ncbi.nlm.nih.gov]
However, physiotherapic treatment is advisable to prevent joints deformity, muscles retractions, and scoliosis. [ijponline.biomedcentral.com]
脳性麻痺では、痙性四肢麻痺、ジスキネジアなどの神経症状がある場合、あるいは重症度が強い場合、他の神経学的異常を合併していることが多い Selective neuronal nitric oxide synthase inhibitors and the prevention of cerebral palsy. Ann Neurol. 2009 Feb 20. [treatneuro.com]
In Brazil, there is not a precise estimate about the frequency of Ullrich CMD, probably due to the lack of molecular studies that prevents a correct diagnosis in patients with CMD and distal joint laxity. [cyberleninka.org]