Varghese Jomy J, Schmale Isaac L, Hansen Mollie Eva, Newlands Shawn D, Benoit Danielle S W, Ovitt Catherine E
Department of Biomedical Engineering, University of Rochester;
Department of Otolaryngology, University of Rochester Medical Center.
J Vis Exp. 2018 May 4(135):57522. doi: 10.3791/57522.
Hyposalivation is commonly observed in the autoimmune reaction of Sjögren's syndrome or following radiation injury to the major salivary glands. In these cases, questions remain regarding disease pathogenesis and effective interventions. An optimized technique that allows functional assessment of the salivary glands is invaluable for investigating exocrine gland biology, dysfunction, and therapeutics. Here, we present a step by step approach to performing pilocarpine stimulated saliva secretion, including tracheostomy and the dissection of the three major murine salivary glands. We also detail the appropriate murine head and neck anatomy accessed during these techniques. This approach is scalable, allowing for multiple mice to be processed simultaneously, thus improving the efficiency of the work flow. We aim to improve the reproducibility of these methods, each of which has further applications within the field. In addition to saliva collection, we discuss metrics for quantifying and normalizing functional capacity of these tissues. Representative data are included from submandibular glands with depressed salivary gland function 2 weeks following fractionated radiation (4 doses of 6.85 Gy).
在干燥综合征的自身免疫反应中或在主要唾液腺受到辐射损伤后,常观察到唾液分泌减少。在这些情况下,关于疾病发病机制和有效干预措施仍存在问题。一种能够对唾液腺进行功能评估的优化技术对于研究外分泌腺生物学、功能障碍及治疗方法具有重要价值。在此,我们介绍一种进行毛果芸香碱刺激唾液分泌的分步方法,包括气管切开术和对小鼠三大唾液腺的解剖。我们还详细说明了在这些技术操作过程中所涉及的小鼠头部和颈部的相应解剖结构。这种方法具有可扩展性,能够同时处理多只小鼠,从而提高工作流程的效率。我们旨在提高这些方法的可重复性,每种方法在该领域都有进一步的应用。除了唾液收集,我们还讨论了量化和标准化这些组织功能能力的指标。文中包含了来自分次放疗(4次,每次6.85 Gy)2周后唾液腺功能低下的下颌下腺的代表性数据。
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