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Master's Dissertation
DOI
10.11606/D.17.2017.tde-05122016-145344
Document
Author
Full name
Paula Marques Lourenço
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
Ribeirão Preto, 2016
Supervisor
Committee
Barreira, Amilton Antunes (President)
Sobreira, Claudia Ferreira da Rosa
Freitas, Marcos Raimundo Gomes de
Speziali, José Geraldo
Title in Portuguese
Aspectos clínico-neurológicos da neuropatia motora multifocal
Keywords in Portuguese
Bloqueio de condução
Neuropatia motora multifocal
Neuropatias inflamatórias
Abstract in Portuguese
A neuropatia motora multifocal (NMM) é uma neuropatia inflamatória de baixa prevalência, 0,6/100.000 pacientes, caracterizada por uma fraqueza muscular progressiva, assimétrica e distal, sem comprometimento sensitivo. A NMM pode mimetizar a esclerose lateral amiotrófica (ELA), outras variantes da doença do neurônio motor e outras polineuropatias inflamatórias desmielinizantes crônicas, com início assimétrico. A diferenciação é importante, tendo em vista as especificidades da evolução e do tratamento das referidas neuropatias. O principal achado eletrofisiológico é o bloqueio de condução nervosa na ausência de anormalidades sensitivas. A fisiopatogenia da NMM é pouco conhecida. O frequente achado de anticorpos circulantes contra o monoassialogangliosídeo (GM1) é sugestivo de que possa haver seu comprometimento em alterações estruturais nodais e perinodais, com comprometimento multifocal da condução nervosa. O corolário desses distúrbios são paresias e paralisias, também de distribuição multifocal. A Imunoglobulina humana por via endovenosa em altas doses constitui o tratamento de escolha. Novas estratégias de tratamento alternativas são necessárias para prevenir fraqueza muscular permanente e incapacidade. Poucos estudos e revisões bibliográficas têm elucidado as características clínicas da NMM, com a ausência na literatura de publicações de série de casos nacionais. No presente estudo, a partir de uma revisão retrospectiva, serão avaliados os aspectos clínicos- eletrofisiológicos da NMM, a fim de se obter um maior entendimento da evolução da doença.
Title in English
Clinical neurological aspects of multifocal motor neuropathy
Keywords in English
Conduction block
Inflammatory neuropathies
Multifocal motor neuropathy
Abstract in English
The multifocal motor neuropathy (MMN) is an inflammatory neuropathy that has low prevalence (0.6 / 100,000 patients). It is characterized by progressive, asymmetric and distal muscle weakness without sensory impairment. The MMN can mimic amyotrophic lateral sclerosis (ALS), other motor neuron disease variants and other chronic inflammatory demyelinating polyneuropathy, with asymmetric start. Differentiation is important, given the specificities of the development and treatment of these neuropathies. The main electrophysiological finding is the nerve conduction block in the absence of sensory abnormalities. The pathophysiology of MMN is little known. The frequent finding of circulating antibodies against monoassialogangliosides (GM1) is suggestive that there may be their involvement in nodal and perinodal structural changes with multifocal impairment of nerve conduction. The corollary of these disorders is paresis and paralysis, with also multifocal distribution. The human immunoglobulin intravenously in high doses constitutes the treatment of choice. New alternative treatment strategies are needed to prevent permanent muscle weakness and disability. Few studies and literature reviews have elucidated the clinical features of MMN and there are no case series publications in the national literature. In this study, from a retrospective review, will be assessed clinic and electrophysiological features of MMN in order to obtain a greater understanding of disease progression.
 
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PAULAMARQUESLOURENCO.pdf (284.47 Kbytes)
Publishing Date
2017-04-04
 
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