22 research outputs found

    Ototoxicité induite par le cisplatine

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    Le cisplatine est une chimiothĂ©rapie anticancĂ©reuse largement utilisĂ©e dans divers types de cancers. Un de ses effets secondaires reconnus est la baisse de l’audition, appelĂ©e ototoxicitĂ©. La littĂ©rature mĂ©dicale sur ce sujet est hĂ©tĂ©rogĂšne et imprĂ©cise. Cette Ă©tude rĂ©trospective explore l’incidence, la sĂ©vĂ©ritĂ© et les potentiels facteurs prĂ©cipitants de l’ototoxicitĂ© chez l’adulte. Les dossiers mĂ©dicaux de 401 patients traitĂ©s par cisplatine de janvier 2015 Ă  janvier 2019 ont Ă©tĂ© analysĂ©s. L’incidence de la perte auditive Ă©tait de 20%. Parmi ces patients, 60% ont prĂ©sentĂ© un acouphĂšne. La perte auditive Ă©tait neurosensorielle, jamais totale et atteignait les deux oreilles symĂ©triquement avec une prĂ©dominance dans les frĂ©quences aiguĂ«s. Aucune des variables analysĂ©es comme potentiels facteurs favorisants Ă©tait statistiquement significative. L’incidence de l’ototoxicitĂ© induite par le cisplatine est Ă©levĂ©e et doit ĂȘtre connue du clinicien, l’acouphĂšne en est un marqueur potentiel

    Disseminated gonorrhea with laryngeal involvement in a 25-year-old man

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    Un cas de gonococcose dissĂ©minĂ©e avec atteinte laryngĂ©e chez un patient de 25 ans est dĂ©crit. L'atteinte pharyngĂ©e reprĂ©sente environ 3% des cas d'infection par Neisseria Gonorrhoeae, mais son atteinte laryngĂ©e n'a jamais Ă©tĂ© documentĂ©e Ă  notre connaissance. Lors d'infection inhabituelle des voies aĂ©ro-digestives supĂ©rieures, une infection sexuellement transmissible doit ĂȘtre recherchĂ©e

    Maladie de MeniĂšre, hydrops endolymphatique et IRM

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    La maladie de MeniĂšre est caractĂ©risĂ©e par des Ă©pisodes rĂ©cidivants de vertige associĂ©s Ă  des fluctuations de l’audition, des acouphĂšnes et une sensation de plĂ©nitude dans l’oreille atteinte. MĂȘme s’il ne permet pas d’expliquer toutes les manifestations de la maladie, l’élargissement de l’espace endolymphatique – ou hydrops endolymphatique (HE) – en est une caractĂ©ristique histologique classique. Les progrĂšs de l’imagerie par rĂ©sonance magnĂ©tique permettent maintenant la visualisation in vivo des espaces liquidiens de l’oreille interne et l’apprĂ©ciation d’un Ă©ventuel HE. Cet article traite de ces avancĂ©es et leurs potentielles implications diagnostiques dans le contexte d’une maladie de MeniĂšre et plus gĂ©nĂ©ralement dans les affections cochlĂ©ovestibulaires

    Subthalamic nucleus oscillations during vocal emotion processing are dependent of the motor asymmetry of Parkinson's disease

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    International audienceThe subthalamic nucleus (STN) is involved in different aspects of emotional processes and more specifically in emotional prosody recognition. Recent studies on the behavioral effects of deep brain stimulation (DBS) in patients with Parkinson's disease (PD) have uncovered an asymmetry in vocal emotion decoding in PD, with left-onset PD patients showing deficits for the processing of happy voices. Whether and how PD asymmetry affects STN electrophysiological responses to emotional prosody, however, remains unknown. In the current study, local field potential activity was recorded from eight left- and six right-lateralized motor-onset PD patients (LOPD/ROPD) undergoing DBS electrodes implantation, while they listened to angry, happy and neutral voices. Time-frequency decomposition revealed that theta (2-6 Hz), alpha (6-12 Hz) and gamma (60-150 Hz) band responses to emotion were mostly bilateral with a differential pattern of response according to patient's sides-of onset. Conversely, beta-band (12-20 Hz and 20-30 Hz) emotional responses were mostly lateralized in the left STN for both patient groups. Furthermore, STN theta, alpha and gamma band responses to happiness were either absent (theta band) or reduced (alpha and gamma band) in the most affected STN hemisphere (contralateral to the side-of onset), while a late low-beta band left STN happiness-specific response was present in ROPD patients and did not occur in LOPD patients. Altogether, in this study, we demonstrate a complex pattern of oscillatory activity in the human STN in response to emotional voices and reveal a crucial influence of disease laterality on STN low-frequency oscillatory activity

    Motor symptom asymmetry in Parkinson's disease predicts emotional outcome following subthalamic nucleus deep brain stimulation

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    International audienceThe objective of this study was to explore the brain modifications associated with vocal emotion (i.e., emotional prosody) processing deficits in patients with Parkinson's disease after deep brain stimulation of the subthalamic nucleus, and the impact of motor asymmetry on these deficits. We therefore conducted 18-fluorodeoxyglucose positron emission tomography scans of 29 patients with left- or right-sided motor symptoms of Parkinson's disease before and after surgery, and correlated changes in their glucose metabolism with modified performances on the recognition of emotional prosody. Results were also compared with those of a matched healthy control group. Patients with more left-sided motor symptoms exhibited a deficit in vocal emotion recognition for neutral, anger, happiness and sadness in the preoperative condition that was normalized postoperatively. Patients with more right-sided motor symptoms performed comparably to controls in the preoperative condition, but differed significantly on fear postoperatively. At the metabolic level, the improvement observed among patients with left-sided motor symptoms was correlated with metabolic modifications in a right-lateralized network known to be involved in emotional prosody, while the behavioral worsening observed among patients with right-sided motor symptoms was correlated with metabolic modifications in the left parahippocampal gyrus and right cerebellum. We suggest that surgery has a differential impact on emotional processing according to motor symptom lateralization, and interpret these results as reflecting the (de)synchronization of the limbic loop in the postoperative condition
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