The combination of various MR techniques can make the course of Wallerian degeneration visualization. 联合运用多种MR成像技术研究沃勒变性,可使其病程变化变得可视化。
The application of various MRI techniques on Wallerian degeneration after cerebral infarction, from imaging principle and pathogenesis, were reviewed in this article. 本文从成像原理及发病机制等方面,对多种磁共振成像技术在脑梗死沃勒变性中的应用进行综述。
In recent years, there were many experimental reports about pathophysiological process of Wallerian degeneration after cerebral infarction, but these studies lacked visibility. 近年来许多学者通过动物实验研究脑梗死后沃勒变性的病理生理过程,但缺乏可视性。
Objective: To study the repairing effects of peripheral nerve injury in Wallerian degeneration. 目的:研究瓦勒变性期修复神经损伤的效果。
A morphological study on the occurrence of wallerian degeneration of rat sciatic nerves after nerve cutting and preventive effect of gangliosides 神经节苷脂预防华勒变性的显微结构研究
Objective: To explore the value of the diffusion tensor imaging ( DTI) in diagnosing Wallerian degeneration. 目的:探讨磁共振弥散张量成像技术(DiffusionTensorImaging,DTI)在Wallerian变性中的诊断价值。
Repairing effects of peripheral nerve injury in Wallerian degeneration 周围神经损伤的瓦勒变性期修复
Wallerian degeneration of the pyramidal tract after cerebral infarction studied by magnetic imaging 脑梗塞后锥体束华勒变性的磁共振影像分析
Conclusion In Ola mice treated with ACR, the Wallerian like degeneration delayed. However, in 6J mice, neurofilaments and mitochondria accumulation could be observed within axons. 结论Ola鼠对ACR所致的类华勒氏变性反应是延迟的,而6J鼠中毒后出现轴突肿胀、变性,电镜下以神经微丝的聚集、线粒体堆积为特征;
MRI of Wallerian degeneration in central nervous system 沃勒变性在中枢神经系统的MRI表现
Then the nerve root underwent axons degeneration, disruption, and distal Wallerian degeneration while the MEP manifested the prolonged latency and the decreased amplitude. 继而脱髓鞘的神经轴突发生变性、断裂及远侧的瓦勒氏变性。MEP则表现为在潜伏期延长的同时伴有波幅降低,且MEP在不同程度的神经病理损伤中具有相应的特征性表现形式。
Microscopic examination showed that the myelinated nerve fibers exhibited Wallerian degeneration and axon regeneration and the cytochondria in cylindraxile were severely injured or disappeared in group RFTC. 与N组比较,RFTC组术后有髓神经纤维的形态学以沃勒变性和再生为特点,轴索内线粒体严重损伤或消失;
Conclusions: Adult rat SC undergoing Wallerian degeneration can still synthesize and secrete neurotrophic factors under serum free cultivation, the activities of which existed in> 10kD fraction. 结论:成年大鼠瓦勒变性期SC在无血清培养条件下仍能合成与分泌神经营养因子,其活性存在于>10kD蛋白分子中。
BACKGROUND: Ola rats is a kind of rats with genovariation, who displays Wallerian degeneration after peripheral neuroaxonal damage that is slower than that normal 6J rats, thereby additional damage factor may help fully understand the property of Ola rats. 背景:Ola鼠是一种基因变异鼠,其周围神经轴突损伤后华勒氏变性速度比正常的6J鼠缓慢,增加损伤因素可能有助于了解Ola鼠的特性。
The pathology of RFTC group was characterized by Wallerian degeneration and axon regeneration. 射频热凝组神经以沃勒变性和轴突再生为特点。
Objective To review the pathologic changes of Wallerian degeneration ( WD) and secondary transneuronal degeneration ( TD) and evaluate their MRI in central nervous system. 目的回顾沃勒变性及继发跨神经元退变的病理学改变,分析其在中枢神经系统的MRI表现。
Results It showed that the electromagnetic field accelerated the course of Wallerian degeneration, Schwann's cell proliferation, regeneration of axon, myelin recovery of motor nerve conduction velosity of sciatic nerve. 结果电磁场治疗加速了损伤神经远段Wallerian变性进程,促进雪旺氏细胞增殖,促进轴索及髓鞘再生,加速运动神经传导速度的恢复。
Results The test group showed Wallerian degeneration. The number of Schwann cell began to decrease at 24 hour, surprisingly be rare at day 3 and 4, then began to increase from day 8 and formed Bungner belt after 14 days. 结果试验组显示华勒氏变性,雪旺细胞数在24小时后下降,3~4天后罕见,8天开始增加,14天形成Bungner带。
Purpose To investigate the relationship between changes of endoneurial fluid pressure ( EFP) and Wallerian degeneration of the facial nerve. 目的探讨面神经损伤后神经内压与面神经Wallerian变性的关系。
Role of diffusion tensor imaging in diagnosing Wallerian degeneration 磁共振弥散张量成像对Wallerian变性诊断价值的评价
Marked degeneration of myelin and Wallerian degeneration could be observed, though without changes in the number of myelinated nerve fibers. 电镜下见髓鞘明显变性即髓鞘板层结构破坏和瓦勒氏变性,但有髓神经纤维计数无明显变化。
DTI would be an effective method to detect the state and time course of Wallerian degeneration in corticospinal tract after cerebral infarction. DTI有利于检测脑梗死后皮质脊髓束发生Wallerian变性的程度及动态演变过程。
Conclusions: DTI could detect Wallerian degeneration of CST as early as at the 3 days after infarction attack. 结论:DTI可以在脑梗死后早期检测到皮质脊髓束的Wallerian变性,最早为发病后第3天。