跑臺訓練對腦外傷大鼠運動功能以及腦內(nèi)線粒體的影響
[Abstract]:Background: craniocerebral injury is a worldwide public health problem. Many patients with traumatic brain injury have long been left with different degrees of neurological dysfunction, such as motor dysfunction, speech dysfunction and cognitive dysfunction. At present, there is no effective method or medicine to cure these diseases, but rehabilitation therapy can obviously improve the neurological function of patients with craniocerebral trauma. However, the mechanism of rehabilitation has not been fully clarified. From the point of view of improving the motor function of the rats after craniocerebral trauma, the mechanism of mitochondria related to the improvement of motor function in rats with craniocerebral trauma by treadmill training was discussed. Methods: 96 adult Sprague-Dawley rats were randomly divided into three groups: the control group, the brain injury group and the traumatic exercise group. One day after the injury, the traumatic exercise group began to undergo two weeks of treadmill exercise training, and observed a series of behavioral manifestations (including nerve function injury, staggered test, etc.), and Evans blue (EB) staining was used to detect the blood-brain barrier permeability in rats. Brain water content was measured by dry-wet method, mitochondria morphology was observed by fluoroscopy electron microscope, and brain tissue volume deficiency was detected by (TTC) staining of 3-triphenyl tetrazolium chloride in each group. The expression of cortical associated protein (HIF-1, Bcl-2) in injured side was detected by Western blot. Results: the body weight of the trauma exercise group was higher than that of the injury group and there was a statistical difference between the two groups on the 7th day (P0.05), and the nerve injury score of the trauma exercise group was 10 and 14 days after the establishment of the model and the score of the brain injury group was higher than that of the brain injury group (P0.05). There was significant statistical difference between the two groups (P0.05). The neurological injury score of the rats in the traumatic exercise group was significantly different from that in the brain injury group on the 7th and 10th day after the model was made (P0.01); in the staggered step experiment of the rats in the traumatic exercise group and the brain injury group, there was a significant difference between the two groups (P0.01). There was statistical difference between 7 and 10 days of walking speed (P0.05), and the walking speed of traumatic exercise group was higher than that of brain injury group. On the 14th day after modeling, the walking speed of the rats in the traumatic exercise group was significantly higher than that in the brain injury group (P0.01), and there was a significant difference between the two groups (P0.01), and on the 14th day after the establishment of the model, the brain defect of the rats in the traumatic exercise group and that in the traumatic exercise group were significantly higher than that in the control group (P0.01). The area of brain section defect is larger, the defect volume is larger, there is statistical difference (P0.05); the brain water content of the trauma group is much higher than that of the control group and the trauma exercise group (P0.05); the content of Evans blue in the brain of the trauma group is higher than that of the trauma exercise group and the control group. Compared with the traumatic exercise group, the brain mitochondria edema status in the traumatic exercise group was significantly better than that in the traumatic exercise group (P0.05). The results of Western Blot showed that the down-regulation of HIF-1 expression and the down-regulation of the expression of BFN1mfn1mfn2.The results showed that the expression of HIF-1 down-regulated and down-regulated the expression of mfn1mfn1mfn2. Conclusion: treadmill training can improve the physical function of brain injury rats to some extent, improve the motor function of rats, and improve the brain edema and blood brain barrier in rats with acute brain injury. Treadmill training can improve the necrosis of brain parenchyma, improve brain function, promote autophagy of rat brain cells, improve mitochondria edema and hypoxia, and promote the repair of injured cells in brain. Improve brain function.
【學位授予單位】:上海體育學院
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:G804.7
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