Ethylmalonic encephalopathy
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Ethylmalonic encephalopathy is an inherited disorder that affects several body systems, particularly the nervous system. Neurological signs and symptoms include delayed development and the loss of previously acquired skills (developmental regression), weak muscle tone (hypotonia), seizures, and abnormal movements. The body's network of blood vessels (the vascular system) is also affected. Children with this disorder often develop rashes of tiny red spots (petechiae) caused by bleeding under the skin and blue discoloration in the hands and feet due to reduced oxygen in the blood (acrocyanosis). Chronic diarrhea is another common feature of ethylmalonic encephalopathy.
Descrizione
Ethylmalonic encephalopathy is an inherited disorder that affects several body systems, particularly the nervous system. Neurological signs and symptoms include delayed development and the loss of previously acquired skills (developmental regression), weak muscle tone (hypotonia), seizures, and abnormal movements. The body's network of blood vessels (the vascular system) is also affected. Children with this disorder often develop rashes of tiny red spots (petechiae) caused by bleeding under the skin and blue discoloration in the hands and feet due to reduced oxygen in the blood (acrocyanosis). Chronic diarrhea is another common feature of ethylmalonic encephalopathy.
The signs and symptoms of ethylmalonic encephalopathy are apparent at birth or begin in the first few months of life. Problems with the nervous system typically worsen over time, and most affected individuals survive only into early childhood.
Modelli di ereditarietà
The source lists the following possible inheritance patterns: Autosomal recessive. More than one pattern can apply in different cases.
Related genes
Altri nomi
Encephalopathy, petechiae, and ethylmalonic aciduria
EPEMA syndrome
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Ulteriori letture e riferimenti
- Ethylmalonic encephalopathy; MedlinePlus, National Library of Medicine.
- Di Meo I, Fagiolari G, Prelle A, Viscomi C, Zeviani M, Tiranti V. Chronic exposure to sulfide causes accelerated degradation of cytochrome c oxidase in ethylmalonic encephalopathy. Antioxid Redox Signal. 2011 Jul 15;15(2):353-62. doi: 10.1089/ars.2010.3520. Epub 2011 Feb 25.
- Drousiotou A, DiMeo I, Mineri R, Georgiou T, Stylianidou G, Tiranti V. Ethylmalonic encephalopathy: application of improved biochemical and molecular diagnostic approaches. Clin Genet. 2011 Apr;79(4):385-90. doi: 10.1111/j.1399-0004.2010.01457.x.
- Garcia-Silva MT, Ribes A, Campos Y, Garavaglia B, Arenas J. Syndrome of encephalopathy, petechiae, and ethylmalonic aciduria. Pediatr Neurol. 1997 Sep;17(2):165-70. doi: 10.1016/s0887-8994(97)00048-9.
- Tiranti V, Briem E, Lamantea E, Mineri R, Papaleo E, De Gioia L, Forlani F, Rinaldo P, Dickson P, Abu-Libdeh B, Cindro-Heberle L, Owaidha M, Jack RM, Christensen E, Burlina A, Zeviani M. ETHE1 mutations are specific to ethylmalonic encephalopathy. J Med Genet. 2006 Apr;43(4):340-6. doi: 10.1136/jmg.2005.036210. Epub 2005 Sep 23.
- Tiranti V, D'Adamo P, Briem E, Ferrari G, Mineri R, Lamantea E, Mandel H, Balestri P, Garcia-Silva MT, Vollmer B, Rinaldo P, Hahn SH, Leonard J, Rahman S, Dionisi-Vici C, Garavaglia B, Gasparini P, Zeviani M. Ethylmalonic encephalopathy is caused by mutations in ETHE1, a gene encoding a mitochondrial matrix protein. Am J Hum Genet. 2004 Feb;74(2):239-52. doi: 10.1086/381653. Epub 2004 Jan 19.
- Tiranti V, Viscomi C, Hildebrandt T, Di Meo I, Mineri R, Tiveron C, Levitt MD, Prelle A, Fagiolari G, Rimoldi M, Zeviani M. Loss of ETHE1, a mitochondrial dioxygenase, causes fatal sulfide toxicity in ethylmalonic encephalopathy. Nat Med. 2009 Feb;15(2):200-5. doi: 10.1038/nm.1907. Epub 2009 Jan 11.
- Tiranti V, Zeviani M. Altered sulfide (H(2)S) metabolism in ethylmalonic encephalopathy. Cold Spring Harb Perspect Biol. 2013 Jan 1;5(1):a011437. doi: 10.1101/cshperspect.a011437.
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