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Disautonomia equina: uma polineuropatia complexa

Authors: Lamande, Célia;

Disautonomia equina: uma polineuropatia complexa

Abstract

A disautonomia equina (DE) é uma polineuropatia que afeta o sistema nervoso central e o sistema nervoso periférico dos equinos. A doença afeta quase exclusivamente os animais com acesso a pastagem. A etiologia não é totalmente conhecida, mas é sugerido que se trata de um tipo de toxina, provavelmente uma neurotoxina de Clostridium botulinum que origina uma série de sinais clínicos caraterísticos, a maioria dos quais podem ser atribuídos à degeneração neuronal no sistema nervoso autónomo (que inclui os sistemas nervosos simpático, parassimpático e entérico). A manifestação da doença varia dependendo da sua gravidade, pode ser caracterizada como, aguda, subaguda e crónica, sendo em grande parte determinada pela extensão da degeneração neuronal nos plexos mioentérico e submucoso do sistema nervoso entérico. A degeneração neuronal extensa, como observado nas formas aguda e subaguda da disautonomia equina, resulta na alteração da motilidade intestinal, cuja gravidade é incompatível com a vida. Por outro lado, a forma crónica da patologia, caracterizam-se por degeneração neuronal menos acentuada, o que aumenta a taxa de sobrevivência dos animais. O diagnóstico da disautonomia equina é um desafio clínico devido à diversidade de sinais clínicos observados e à falta de testes de diagnóstico específicos, exceto o exame histológico dos gânglios entéricos que constitui um procedimento invasivo. As opções de tratamento são limitadas e os cuidados de suporte visando a manter a hidratação, fornecer nutrição e controlar a dor são a base do tratamento. A vacinação representa uma esperança em termos de prevenção da manifestação desta doença neurológica complexa.

Country
Portugal
Keywords

Disautonomia, Neurotoxina, Polineuropatia, Polyneuropathy, Equines, Clostridium botulinum, Equine grass sickness, Equinos, Neurotoxin

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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