摘要
目的 探讨迷走神经刺激对兔脑爆炸伤后血清及脑组织中肿瘤坏死因子-α(TNF-α)、白介素-1β(IL-1β)及白介素-10(IL-10)水平的影响. 方法 24只雄性新西兰大白兔按随机数字表法分为假手术组(6只)、爆炸伤组(10只)和迷走神经刺激组(8只),爆炸伤组和迷走神经刺激组制作兔脑爆炸伤模型,迷走神经刺激组爆炸伤后接受右侧颈迷走神经刺激(10V,5 Hz,刺激5 ms后间断195ms,持续20 min).各组兔行血清(伤后6 h)和脑组织(伤后24 h)TNF-α、IL-1β 和IL-10水平检测及脑组织含水量测定. 结果 爆炸伤组兔血清及脑组织内TNF-α水平[(595.63± 18.70) pg/mL、(16.08±0.68) pg/mg]、IL-1β水平[(71.26±2.72) pg/mL、(16.08±0.68) pg/mg]及脑组织含水量(81.2%±2.2%)均明显高于假手术组[对应值分别为(497.03± 16.87) pg/mL、(11.34±1.34) pg/mg、(51.46±3.59)pg/mL、(1.22±0.11) pg/mg、76.9%±1.2%]和迷走神经刺激组[对应值分别为(528.05±31.64) pg/mL、(13.14±1.40) pg/mg、(63.07±3.28) pg/mL、(1.35±0.13) pg/mg、79.5%±1.6%],差异有统计学意义(P<0.05);迷走神经刺激组兔血清及脑组织内IL-10水平[(34.65±3.70) pg/mL、(0.89±0.07) pg/mg]均明显高于假手术组[(22.43±2.87) pg/mL、(0.63±0.06) pg/mg]和爆炸伤组[(28.34±2.96) pg/mL、(0.71±0.06)pg/mg],差异有统计学意义(P<0.05). 结论 迷走神经刺激可通过降低血清及脑组织内TNF-α、IL-1β水平和升高IL-10水平来减轻脑爆炸伤后脑组织水肿程度,发挥脑保护作用.
Objective To study the effects of vagus nerve stimulation (VNS) on brain tissue tumor necrosis factor-α (TNF-o),interleukin-1β (IL-1β) and IL-10 levels in serum and brain tissues after blast brain injury in rabbits.Methods Twenty New Zealand white male rabbits were randomly divided into sham-operated group (n=6),traumatic brain injury (TBI) group (n=10),TBI+VNS group (n=8).Rabbit brain blast injury models of TBI group and TBI+VNS group were established; and the right cervical vagus nerves of the rabbits in TBI+VNS group were stimulated (10 V,5 HZ,5 ms,20 min).The TNF-α,IL-1β and IL-10 changes in the serum (6 h after injury) and brain tissues (24 h after injury) and the water content in the injured brain tissues were observed and recorded.Results The TNF-α and IL-1β levels in the serum and brain tissues,the water content in the brain tissues of the TBI group were significantly higher than those in the sham-operated group and TBI+VNS group (P〈0.05); the IL-10 level in the TBI+VNS group was significantly higher than that in the sham-operated group and TBI group (P〈0.05).Conclusion VNS can reduce the brain edema degree by increasing the IL-10 level and decreasing the TNF-α and IL-1 β levels,which plays a key role in brain protection effect after brain blast injury in rabbits.
出处
《中华神经医学杂志》
CAS
CSCD
北大核心
2014年第5期442-445,共4页
Chinese Journal of Neuromedicine
基金
全军“十一五”医学科研基金面上项目(06MB152)
福建省漳州市科技计划项目(Z10088)
南京军区医学科技计划项目(12MA065)