ENFERMEDAD DE MENKES PDF
February 21, 2020 | by admin
Wikipedia. Instance of, disease, Designated intractable/rare diseases. Subclass of, hair disease, metal metabolism disorder. Menkes disease (MNK), also known as Menkes syndrome, is an X-linked recessive disorder caused by mutations in genes coding for the copper-transport . A number sign (#) is used with this entry because of evidence that Menkes disease is caused by mutation in the gene encoding Cu(2+)-transporting ATPase .
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The cellular pathology of Menkes’ steely hair syndrome. Molecular 3-dimensional modeling based on the structure of ATP2A1 showed that the mutations were more spatially clustered than expected from the primary sequence.
De Bie et al. Dyskeratosis congenita Hypohidrotic ectodermal dysplasia EDA X-linked ichthyosis X-linked endothelial corneal dystrophy. Mandelstam SA, Fisher R.
Features were somewhat variable, but included hypotonia, myopathic facies, coarse hair, silvery hair, skin and joint laxity, and severe global developmental delay. We need long-term secure funding to provide you the information that you need at your fingertips. A number of Golgi-resident proteins contain specific localization signals, and Francis et al. Isolation of a candidate gene for Menkes disease that encodes a potential heavy metal binding protein.
Treatment with atropine resulted in a brisk increase in heart rate and rapid clinical recovery. Additionally, the findings in muscle biopsy can range from mild changes found in a myriad of other disease, like an increase of variability of muscle fiber size, atrophy of type I and II muscle fibers, lack of fiber predominance, with mostly normal histological findings in muscle fibers 18, Symptoms began at age 12 years and defective copper absorption from the distal intestine, with high copper levels in rectal mucosa, was demonstrated.
Studies of the biochemical basis of kinky hair disease. The similarities in biochemical findings between type IX Ehlers-Danlos syndrome and Menkes syndrome may indicate allelism. This prevents the production of a functional ATP7A protein, leading to the impaired absorption of copper from food and copper will not be supplied to certain enzymes. Altered copper metabolism in cultured cells from human Menkes’ syndrome and mottled mouse mutants.
OMIM is intended for use primarily by physicians and other professionals concerned with genetic disorders, by genetics researchers, and by advanced students in science and medicine. These patients had normal head circumference, moderate to severe mental retardation, onset at age of 3 to 4 years, dysarthria, laxity of skin, bladder diverticula, tortuous vessels, chronic diarrhea, and occipital exostoses evident in 3 persons aged 18 to 38 years.
Menkes’ disease: case report
A newspaper photograph of the 9-year-old patient indicated his appearance at the time of the report. Isolation of a candidate gene for Menkes disease that encodes a potential heavy metal binding protein. Radiological findings in the kinky-hair syndrome.
They established a lymphoblastoid cell line from the patient of Kapur et al. J Med Genet ; Early diagnosis is uncommon, as the first menks can be somewhat unspecific, with more prominent features like the unique hair abnormalities developing over time, sometimes at the same time as neurological compromise From Wikipedia, the free encyclopedia. The anatomic change in the central nervous system was described on the basis of 2 autopsies.
Category:Menkes disease – Wikimedia Commons
Localization of the Menkes gene to the long arm of the X-chromosome. French and Sherard presented evidence that they interpreted as indicating that this disorder may represent an abnormality of lipid metabolism. West syndrome as an epileptic presentation in Menkes’ disease: However, in those patients in late stages of MD mitochondrial compromise oxidase c cytochrome complex ragged red fibers can be found, similar to those found in mitochondrial myopathies 18, Menkes disease in affected females: Menkes disease was diagnosed at autopsy and confirmed by copper accumulation studies on cultured fibroblasts.
The patient had been born at term, vaginal delivery, without any sort of complication; his parents were not related and prior to his admission he had had 5 episodes of pneumonia.
CC ]. Screening of unrelated patients affected with Menkes disease and finding of 57 gross deletions in ATP7A. Suppression by copper supplementation”. Menkes kinky hair disease with ‘ragged red’ fibers.
No adverse effects of pamidronate treatment were noted. By a database search of the predicted sequence, Vulpe et al. Weakened bones osteoporosis may result in fractures. X-linked inheritance was suggested. They demonstrated that the normal X chromosome was late replicating, whereas the derivative X chromosome was selectively early replicating. The authors hypothesized that function of the ATP7A gene had been disrupted by the translocation, either by a structural disruption or by ‘silencing’ as a result of inappropriate localized inactivation in an otherwise active X;13 derivative chromosome.
Biochemical studies showed depressed serum tocopherol and normal amino acid content of hair serum enfsrmedad urine.
They meneks presented Western blot data for the normal gene product in tissues. Primary defect in copper transport underlies mottled mutants menkws the mouse. A murine model of Menkes disease reveals a physiological function of metallothionein. Menkes kinky hair syndrome: Three children with Menkes disease and significant osteoporosis with or without pathologic fractures all received pamidronate treatment for 1 year.
All studies were done following informed consent of parents.