线栓法建立卒中后吞咽障碍的大鼠模型

Establishment of rat model of dysphagia after stroke by thread embolism

目的建立一种可行的卒中后吞咽障碍动物模型。方法清洁级Sprague-Dawley大鼠22只随机分为正常组(n=11)和造模组(n=11)。造模组采用线栓法制备卒中后吞咽障碍动物模型,正常组不予处理。分别于造模成功3 d、7 d后记录所有大鼠第1次吞咽的发作潜伏期和吞咽次数,采用TTC染色法检测脑组织梗死情况,采用TUNEL荧光染色法测定缺血脑组织神经细胞凋亡情况。结果与正常组比较,造模组造模3 d后吞咽潜伏期有所延长,吞咽次数减少,但均无显著性差异(P>0.05);7 d后吞咽潜伏期延长(P<0.05),吞咽次数有所减少,但无显著性差异(P>0.05)。与正常组比较,造模组脑组织出现明显梗死灶和大量凋亡细胞,体质量减小(P<0.05)。结论造模大鼠出现一定程度的吞咽障碍症状,有望成为脑卒中后吞咽障碍的转化模型。

Objective To explore a feasible animal model of dysphagia after stroke.Methods Twenty-two clean Sprague-Dawley rats were randomly divided into normal group(n=11)and model group(n=11).The model of dysphagia after stroke was established by the thread embolism,and the normal group received no intervention.The latency of the first swallowing attack and the number of swallowing were recorded three and seven days after modeling.The cerebral infarction was detected by TTC staining,and the neuronal apoptosis in ischemic brain was detected by TUNEL fluorescence staining.Results Compared with the normal group,the swallowing latency prolonged and the number of swallowing reduced three days in the model group,however,there was no significant difference(P>0.05);seven days after modeling,the swallowing latency prolonged(P<0.05),and the number of swallowing slightly reduced with little significant difference(P>0.05).Compared with the normal group,the brain tissue showed obvious infarction area and a large number of apoptotic cells,while the body mass reduced in the model group(P<0.05).Conclusion The model rats express some features of dysphagia,which may become a transformation model of dyspha‐gia after stroke.