Pavlovich E R, Shvalev V N
Arkh Anat Gistol Embriol. 1985 Jul;89(7):24-8.
A quantitative electron microscopical investigation of the sinus node of the atrioventricular His' bundle and of the perinodal working myocardium in intact rats and 7, 15 and 30 days after right-sided vagotomy has revealed variable character of changes in the neural elements of the zones mentioned. Certain ultrastructural rearrangements in the neural apparatus are described; they reflect a combination of destructive and regenerative processes in the heart under vagotomy. Thirty days after the operation, regeneration of the neural elements in the sinoauricular area is of restorative and in the atrioventricular area--of excess character. The data are presented on dynamics of changes in the diameter of the amyelinated neural fibers in the cardiac areas investigated. Participation of both nervi vagi in innervation of the main and additional pacemakers of the organ is discussed.
对完整大鼠以及右侧迷走神经切断术后7天、15天和30天的房室束窦房结和结周工作心肌进行的定量电子显微镜研究显示，上述区域神经元件的变化具有多样性。描述了神经装置中的某些超微结构重排；它们反映了迷走神经切断术后心脏中破坏和再生过程的结合。术后30天，窦房区域神经元件的再生具有恢复性，而房室区域的再生则具有过度特征。给出了所研究心脏区域无髓神经纤维直径变化的动态数据。讨论了双侧迷走神经在该器官主要和辅助起搏器神经支配中的作用。
