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- W2009753353 abstract "This study aims to evaluate sympathetic sudomotor activity in Parkinson's disease (PD) by means of the sympathetic skin response (SSR) and explore its possible changes due to mental stress. Sudomotor function was evaluated using SSR in 29 patients with PD (Hoehn and Yahr stage I–IV) without any clinical evidence of autonomic dysfunction. Twenty-seven healthy matched controls were also evaluated. SSR was elicited by electrical stimulation of the right median nerve and simultaneously recorded on the palms of both hands. Arithmetic mental stress was evoked by means of the WAIS-R arithmetic subscale. Latency and amplitude of SSR were evaluated before and after arithmetic mental stress. The SSR was obtained in all patients and controls. There were no significant differences in its mean latency and amplitude between patients and controls. SSR parameters were significantly correlated with disease duration, UPDRS score, and disease stage. There were also significant correlations with rigidity and bradykinesia, but not with tremor. Mental stress had no effect on SSR parameters in any group. SSR parameters in PD without autonomic dysfunction were comparable to matched controls. Although PD patients are sensitive to mental stress, the arithmetic task had no effect on SSR parameters. Consequently, SSR as a method of evaluation of sympathetic sudomotor function is not sufficient for exploration of subclinical autonomic dysfunction in PD, but should be combined with other tests of autonomous nervous system. Évaluer l’activation sympathique réflexe des glandes sudoripares dans la maladie de Parkinson par la mesure du réflexe psychogalvanique (RPG), ainsi que ses éventuelles modifications après stress mental. Nous avons évalué le RPG chez 29 malades parkinsoniens (stade I–IV de Hoehn et Yahr) sans signe clinique de dysautonomie. Vingt-sept sujets normaux ont également été évalués. Le RPG a été induit par stimulation électrique du nerf médian droit et enregistré simultanément sur les paumes des deux mains. Le temps de latence et l’amplitude du RPG ont été mesurés avant et après qu’un stress mental arithmétique ait été évoqué au moyen de la sous-échelle arithmétique de la WAIS-R. Le RPG a été obtenu chez tous les patients et les sujets témoins. Les temps de latence et amplitudes ne différaient pas significativement entre les patients et les sujets témoins. Ils étaient corrélés avec la durée de la maladie, le score UPDRS et le stade de la maladie. Des corrélations significatives ont également été trouvées avec la rigidité et la bradykinésie, mais pas avec les tremblements. Ils n’ont été modifiés par le stress dans aucun des deux groupes. Le RPG ne différait pas chez les patients parkinsoniens et les sujets normaux. Bien que les premiers soient sensibles au stress mental, la tâche arithmétique n’a eu aucun effet sur les paramètres du RPG. Par conséquent, le RPG en tant que méthode d’évaluation de la réactivité sudomotrice sympathique n’est pas suffisant pour être utilisé en vue de l’exploration de la dysautonomie subclinique dans la maladie de Parkinson et doit être combiné avec d’autres tests du système nerveux autonome." @default.
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- W2009753353 date "2012-04-01" @default.
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- W2009753353 title "Sympathetic skin response in Parkinson's disease before and after mental stress" @default.
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- W2009753353 doi "https://doi.org/10.1016/j.neucli.2011.11.002" @default.
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