Abstract:OBJETIVOS: Padronização da técnica de secção do nervo facial extratemporal em ratos e elaboração de uma escala de avaliação da mímica facial desses animais antes e após essa secção. TIPO DE ESTUDO: Experimental. MÉTODO: Vinte ratos Wistar foram anestesiados com xilasina e ketamina e submetidos à secção do nervo facial próximo à sua emergência pelo forame mastóideo na pele. Todos os animais foram avaliados. Foram observados: fechamento ocular, reflexo de piscamento, movimentação e posicionamento das vibrissas, … Show more
“…Functional recuperation can be measured by means of behavioral (16,22,24,28) and electrophysiologic tests (30). Some of the objective tests also have drawbacks; for example, electromyography only provides information regarding the muscular group anatomically near the electrode and does not provide direct information regarding the functional integrity of facial musculature away from the electrode.…”
This study showed that the regeneration of the facial nerve occurred earlier and resulted in significantly more myelinated nerve fibers in the animals that received topical bFGF.
“…Functional recuperation can be measured by means of behavioral (16,22,24,28) and electrophysiologic tests (30). Some of the objective tests also have drawbacks; for example, electromyography only provides information regarding the muscular group anatomically near the electrode and does not provide direct information regarding the functional integrity of facial musculature away from the electrode.…”
This study showed that the regeneration of the facial nerve occurred earlier and resulted in significantly more myelinated nerve fibers in the animals that received topical bFGF.
“…In this context, several functional tests were developed to better study and understand the limiting factors in experimental studies. There are several functional tests described in the literature for the evaluation of different nerves or groups of nerves [9][10][11][12][13][14][15][16][17][18][19] . These tests do not evaluate reflex acts, but complex motor acts involving agonist and antagonist muscles 11,13,16 .…”
Section: ■ Introductionmentioning
confidence: 99%
“…Vibrissae movements 9 were scored on a 0-4 scale (0 -no movement; 1 -slight whisker movement; 2 -slow movement; 3 -rapid movement distinguishable from the contralateral normal side; and 4 -symmetric movement). The nictitating reflex 10 was scored on a 0-2 scale (0 -no reflex; 1 -nictitating reflex distinguishable from the contralateral side; 2 -nictitating reflex symmetric.…”
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