Document Detail

Hereditary motor and autonomic neuronopathy 1 maps to chromosome 20q13.2-13.3.
MedLine Citation:
PMID:  15517093     Owner:  NLM     Status:  MEDLINE    
The spinal muscular atrophies (SMA) or hereditary motor neuronopathies result from the continuous degeneration and death of spinal cord lower motor neurons, leading to progressive muscular weakness and atrophy. We describe a large Brazilian family exhibiting an extremely rare, late-onset, dominant, proximal, and progressive SMA accompanied by very unusual manifestations, such as an abnormal sweating pattern, and gastrointestinal and sexual dysfunctions, suggesting concomitant involvement of the autonomic nervous system. We propose a new disease category for this disorder, 'hereditary motor and autonomic neuronopathy', and attribute the term, 'survival of motor and autonomic neurons 1' (SMAN1) to the respective locus that was mapped to a 14.5 cM region on chromosome 20q13.2-13.3 by genetic linkage analysis and haplotype studies using microsatellite polymorphic markers. This locus lies between markers D20S120 and D20S173 showing a maximum LOD score of 4.6 at D20S171, defining a region with 33 known genes, including several potential candidates. Identifying the SMAN1 gene should not only improve our understanding of the molecular mechanisms underlying lower motor neuron diseases but also help to clarify the relationship between motor and autonomic neurons.
W Marques; M B Davis; P M Abou-Sleiman; V D Marques; W A Silva Jr; M A Zago; C S Sobreira; A A Barreira
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2004-10-26
Journal Detail:
Title:  Brazilian journal of medical and biological research = Revista brasileira de pesquisas médicas e biológicas / Sociedade Brasileira de Biofísica ... [et al.]     Volume:  37     ISSN:  0100-879X     ISO Abbreviation:  Braz. J. Med. Biol. Res.     Publication Date:  2004 Nov 
Date Detail:
Created Date:  2004-11-01     Completed Date:  2005-05-05     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  8112917     Medline TA:  Braz J Med Biol Res     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  1757-62     Citation Subset:  IM    
Departamento de Neurologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Brasil.
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MeSH Terms
Chromosome Mapping / methods*
Chromosomes, Human, Pair 20 / genetics*
Genetic Markers
Hereditary Sensory and Motor Neuropathy / genetics*
Polymerase Chain Reaction
Reg. No./Substance:
0/Genetic Markers

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