síndrome de Rett
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Rett syndrome is a brain disorder that occurs almost exclusively in girls. The most common form of the condition is known as classic Rett syndrome. After birth, girls with classic Rett syndrome have 6 to 18 months of apparently normal development before developing severe problems with language and communication, learning, coordination, and other brain functions. Early in childhood, affected girls lose purposeful use of their hands and begin making repeated hand wringing, washing, or clapping motions. They tend to grow more slowly than other children and about three-quarters have a small head size (microcephaly). Other signs and symptoms that can develop include breathing abnormalities, spitting or drooling, unusual eye movements such as intense staring or excessive blinking, cold hands and feet, irritability, sleep disturbances, seizures, and an abnormal side-to-side curvature of the spine (scoliosis).
Descrição
Rett syndrome is a brain disorder that occurs almost exclusively in girls. The most common form of the condition is known as classic Rett syndrome. After birth, girls with classic Rett syndrome have 6 to 18 months of apparently normal development before developing severe problems with language and communication, learning, coordination, and other brain functions. Early in childhood, affected girls lose purposeful use of their hands and begin making repeated hand wringing, washing, or clapping motions. They tend to grow more slowly than other children and about three-quarters have a small head size (microcephaly). Other signs and symptoms that can develop include breathing abnormalities, spitting or drooling, unusual eye movements such as intense staring or excessive blinking, cold hands and feet, irritability, sleep disturbances, seizures, and an abnormal side-to-side curvature of the spine (scoliosis).
Researchers have described several variant or atypical forms of Rett syndrome, which can be milder or more severe than the classic form.
Rett syndrome is part of a spectrum of disorders with the same genetic cause. Other disorders on the spectrum include PPM-X syndrome, MECP2 duplication syndrome, and MECP2-related severe neonatal encephalopathy. These other conditions can affect males.
Padrões de herança
The source lists the following possible inheritance patterns: X-linked dominant. More than one pattern can apply in different cases.
Related genes
Other names
Autism-dementia-ataxia-loss of purposeful hand use syndrome
Rett disorder
Rett's disorder
Rett's syndrome
RTT
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Leitura adicional e referências
- síndrome de Rett; MedlinePlus, National Library of Medicine.
- Chahrour M, Zoghbi HY. The story of Rett syndrome: from clinic to neurobiology. Neuron. 2007 Nov 8;56(3):422-37. doi: 10.1016/j.neuron.2007.10.001.
- Ehrhart F, Coort SL, Cirillo E, Smeets E, Evelo CT, Curfs LM. Rett syndrome - biological pathways leading from MECP2 to disorder phenotypes. Orphanet J Rare Dis. 2016 Nov 25;11(1):158. doi: 10.1186/s13023-016-0545-5.
- Gold WA, Krishnarajy R, Ellaway C, Christodoulou J. Rett Syndrome: A Genetic Update and Clinical Review Focusing on Comorbidities. ACS Chem Neurosci. 2018 Feb 21;9(2):167-176. doi: 10.1021/acschemneuro.7b00346. Epub 2017 Dec 15.
- Neul JL, Kaufmann WE, Glaze DG, Christodoulou J, Clarke AJ, Bahi-Buisson N, Leonard H, Bailey ME, Schanen NC, Zappella M, Renieri A, Huppke P, Percy AK; RettSearch Consortium. Rett syndrome: revised diagnostic criteria and nomenclature. Ann Neurol. 2010 Dec;68(6):944-50. doi: 10.1002/ana.22124.
- Neul JL, Zoghbi HY. Rett syndrome: a prototypical neurodevelopmental disorder. Neuroscientist. 2004 Apr;10(2):118-28. doi: 10.1177/1073858403260995.
- Percy AK, Lane JB. Rett syndrome: model of neurodevelopmental disorders. J Child Neurol. 2005 Sep;20(9):718-21. doi: 10.1177/08830738050200090301.
- Samaco RC, Neul JL. Complexities of Rett syndrome and MeCP2. J Neurosci. 2011 Jun 1;31(22):7951-9. doi: 10.1523/JNEUROSCI.0169-11.2011. No abstract available.
- Zoghbi HY. Rett syndrome: what do we know for sure? Nat Neurosci. 2009 Mar;12(3):239-40. doi: 10.1038/nn0309-239. No abstract available.
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