犬三叉神经功能障碍的流涎异常,Journal of Veterinary Dentistry

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犬三叉神经功能障碍的流涎异常
Journal of Veterinary Dentistry ( IF 0.7 ) Pub Date : 2019-03-01 , DOI: 10.1177/0898756419846607
Marc Kent ₁ , Rachel B Song ₂ , Eric N Glass ₂ , Alexander de Lahunta ₃

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三叉神经病理可导致容易识别的头部结构的感觉和运动功能障碍。三叉神经是将节后副交感神经支配分布到头部结构的管道。唾液腺的副交感神经支配由面神经和舌咽神经的节前副交感神经元提供。节后轴突与三叉神经下颌支的分支一起到达唾液腺。唾液腺的去神经支配影响腺体功能，导致产生的唾液的体积和成分减少。唾液在口腔健康中起着重要作用。口腔健康不佳具有广泛的全身性影响。本文描述了一组患有单侧或双侧三叉神经和/或其分支功能障碍的狗。在所有狗中，观察到在受累神经的同侧的尾部口腔背面积聚了厚厚的泡沫唾液。在使用磁共振成像 (MRI) 的狗中，与正常侧的腺体相比，受累神经同侧唾液腺的最大横截面积测量结果显示尺寸减小，平均信号强度增加。作者假设观察到的异常唾液和 MRI 变化是唾液腺副交感神经去神经支配的结果。

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A Salivation Abnormality with Trigeminal Nerve Dysfunction in Dogs

Trigeminal nerve pathology can lead to sensory and motor dysfunction to structures of the head that are easily recognized. The trigeminal nerve is a conduit for the distribution of postganglionic parasympathetic innervation to structures of the head. Parasympathetic innervation to the salivary glands is provided by preganglionic parasympathetic neurons of the facial and glossopharyngeal nerves. Postganglionic axons course with branches of the mandibular branch of the trigeminal nerve to reach the salivary glands. Denervation of the salivary glands impacts glandular function, leading to a reduction in the volume and composition of the saliva produced. Saliva plays an important role in oral health. Poor oral health has widespread systemic implications. This article describes a group of dogs with unilateral or bilateral dysfunction of the trigeminal nerve and/or its branches. In all dogs, an accumulation of thick, foamy saliva was observed accumulating in the dorsal aspect of the caudal oral cavity on the ipsilateral side to the affected nerve. In dogs with magnetic resonance imaging (MRI), there was a reduction in size based on the largest cross-sectional area measurement and an increase in mean signal intensity of the salivary glands ipsilateral to the affected nerves compared to the glands on the normal side. The authors hypothesize that the abnormal saliva and MRI changes observed were consequent to parasympathetic denervation of the salivary glands. The recognition of this clinical observation is the first step in understanding the impact that denervation has on salivation and ultimately on overall oral and systemic health in dogs.

更新日期：2019-03-01

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