Atrofia de múltiplos sistemas
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Multiple system atrophy is a progressive brain disorder that affects movement and balance and disrupts the function of the autonomic nervous system. The autonomic nervous system controls body functions that are mostly involuntary, such as regulation of blood pressure. The most frequent autonomic symptoms associated with multiple system atrophy are a sudden drop in blood pressure upon standing (orthostatic hypotension), urinary difficulties, and erectile dysfunction in men.
Descrição
Multiple system atrophy is a progressive brain disorder that affects movement and balance and disrupts the function of the autonomic nervous system. The autonomic nervous system controls body functions that are mostly involuntary, such as regulation of blood pressure. The most frequent autonomic symptoms associated with multiple system atrophy are a sudden drop in blood pressure upon standing (orthostatic hypotension), urinary difficulties, and erectile dysfunction in men.
Researchers have described two major types of multiple system atrophy, which are distinguished by their major signs and symptoms at the time of diagnosis. In one type, known as MSA-P, a group of movement abnormalities called parkinsonism are predominant. These abnormalities include unusually slow movement (bradykinesia), muscle rigidity, tremors, and an inability to hold the body upright and balanced (postural instability). The other type of multiple system atrophy, known as MSA-C, is characterised by cerebellar ataxia, which causes problems with coordination and balance. This form of the condition can also include speech difficulties (dysarthria) and problems controlling eye movement.
Multiple system atrophy usually occurs in older adults; on average, signs and symptoms appear around age 55. The condition worsens with time, and affected individuals survive an average of 10 years after the signs and symptoms first appear.
Padrões de herança
The source lists the following possible inheritance patterns: Pattern unknown. More than one pattern can apply in different cases.
Related genes
Other names
MSA
OPCA
Progressive autonomic failure with multiple system atrophy
SDS
Shy-Drager syndrome
Sporadic olivopontocerebellar atrophy
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Leitura adicional e referências
- Atrofia de múltiplos sistemas; MedlinePlus, National Library of Medicine.
- Al-Chalabi A, Durr A, Wood NW, Parkinson MH, Camuzat A, Hulot JS, Morrison KE, Renton A, Sussmuth SD, Landwehrmeyer BG, Ludolph A, Agid Y, Brice A, Leigh PN, Bensimon G; NNIPPS Genetic Study Group. Genetic variants of the alpha-synuclein gene SNCA are associated with multiple system atrophy. PLoS One. 2009 Sep 22;4(9):e7114. doi: 10.1371/journal.pone.0007114.
- Fanciulli A, Wenning GK. Multiple-system atrophy. N Engl J Med. 2015 Jan 15;372(3):249-63. doi: 10.1056/NEJMra1311488. No abstract available.
- Federoff M, Schottlaender LV, Houlden H, Singleton A. Multiple system atrophy: the application of genetics in understanding etiology. Clin Auton Res. 2015 Feb;25(1):19-36. doi: 10.1007/s10286-014-0267-5. Epub 2015 Feb 17.
- Gilman S, Wenning GK, Low PA, Brooks DJ, Mathias CJ, Trojanowski JQ, Wood NW, Colosimo C, Durr A, Fowler CJ, Kaufmann H, Klockgether T, Lees A, Poewe W, Quinn N, Revesz T, Robertson D, Sandroni P, Seppi K, Vidailhet M. Second consensus statement on the diagnosis of multiple system atrophy. Neurology. 2008 Aug 26;71(9):670-6. doi: 10.1212/01.wnl.0000324625.00404.15.
- Low PA, Reich SG, Jankovic J, Shults CW, Stern MB, Novak P, Tanner CM, Gilman S, Marshall FJ, Wooten F, Racette B, Chelimsky T, Singer W, Sletten DM, Sandroni P, Mandrekar J. Natural history of multiple system atrophy in the USA: a prospective cohort study. Lancet Neurol. 2015 Jul;14(7):710-9. doi: 10.1016/S1474-4422(15)00058-7. Epub 2015 May 27.
- Multiple-System Atrophy Research Collaboration. Mutations in COQ2 in familial and sporadic multiple-system atrophy. N Engl J Med. 2013 Jul 18;369(3):233-44. doi: 10.1056/NEJMoa1212115. Epub 2013 Jun 12.
- Scholz SW, Houlden H, Schulte C, Sharma M, Li A, Berg D, Melchers A, Paudel R, Gibbs JR, Simon-Sanchez J, Paisan-Ruiz C, Bras J, Ding J, Chen H, Traynor BJ, Arepalli S, Zonozi RR, Revesz T, Holton J, Wood N, Lees A, Oertel W, Wullner U, Goldwurm S, Pellecchia MT, Illig T, Riess O, Fernandez HH, Rodriguez RL, Okun MS, Poewe W, Wenning GK, Hardy JA, Singleton AB, Del Sorbo F, Schneider S, Bhatia KP, Gasser T. SNCA variants are associated with increased risk for multiple system atrophy. Ann Neurol. 2009 May;65(5):610-4. doi: 10.1002/ana.21685.
- Stemberger S, Scholz SW, Singleton AB, Wenning GK. Genetic players in multiple system atrophy: unfolding the nature of the beast. Neurobiol Aging. 2011 Oct;32(10):1924.e5-14. doi: 10.1016/j.neurobiolaging.2011.04.001. Epub 2011 May 24.
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