论文部分内容阅读
作者报导用肉毒杆菌A毒素注入眼外肌以改变眼位。其治疗原理是使注射肌轻度萎缩,张力适当减弱,同时对抗肌由此麻痹松弛而张力加强。注射肌麻痹数周后,即使恢复其神经支配的功能,眼位也有某种程度的改变。神经末梢释放乙酰胆碱需自钙离子浓度的改变。肉毒杆菌毒素以酶的作用方式对神经末梢的钙离子代谢起干扰作用,有效地抑制乙酰胆碱的释放,在数周内使肌肉纤维失去神经支配的功能。在此期间用电子显微镜可见肌-神经接点和肌肉纤维有明显改变。以后,肌肉恢复其功能,
The authors report the injection of botulinum toxin A into the extraocular muscles to change the eye position. The treatment principle is to make the injection of muscle mild atrophy, tension weakened appropriately, while the anti-muscle paralysis relaxation and tension to strengthen. After a few weeks after the injection of muscle paralysis, there is some degree of change in the ophthalmic position, even if it regains its innervated function. The release of acetylcholine from the nerve endings requires a change in calcium ion concentration. Botulinum toxin acts as an enzyme to interfere with the calcium metabolism of nerve endings, effectively inhibiting the release of acetylcholine, and losing muscle innervation within a few weeks. Electron microscopy showed a significant change in muscle-nerve junctions and muscle fibers during this period. Later, the muscle to restore its function,