Mild therapeutic hypothermia has been shown to mitigate cerebral ischemia, reduce cerebral edema, and improve the prognosis of patients with cerebral ischemia. Adipose-derived stem cell-based therapy can decrease neur...Mild therapeutic hypothermia has been shown to mitigate cerebral ischemia, reduce cerebral edema, and improve the prognosis of patients with cerebral ischemia. Adipose-derived stem cell-based therapy can decrease neuronal death and infiltration of inflammatory cells, exerting a neuroprotective effect. We hypothesized that the combination of mild therapeutic hypothermia and adipose-derived stem cells would be neuroprotective for treatment of stroke. A rat model of transient middle cerebral artery occlusion was established using the nylon monofilament method. Mild therapeutic hypothermia（33°C） was induced after 2 hours of ischemia. Adipose-derived stem cells were administered through the femoral vein during reperfusion. The severity of neurological dysfunction was measured by a modified Neurological Severity Score Scaling System. The area of the infarct lesion was determined by 2,3,5-triphenyltetrazolium chloride staining. Apoptotic neurons were detected by terminal deoxynucleotidyl transferase-mediated d UTP-biotin nick end labeling（TUNEL） staining. The regeneration of microvessels and changes in the glial scar were detected by immunofluorescence staining. The inflammatory responses after ischemic brain injury were evaluated by in situ staining using markers of inflammatory cells. The expression of inflammatory cytokines was measured by reverse transcription-polymerase chain reaction. Compared with mild therapeutic hypothermia or adipose-derived stem cell treatment alone, their combination substantially improved neurological deficits and decreased infarct size. They synergistically reduced the number of TUNEL-positive cells and glial fibrillary acidic protein expression, increased vascular endothelial growth factor levels, effectively reduced inflammatory cell infiltration and down-regulated the m RNA expression of the proinflammatory cytokines interleukin-1β, tumor necrosis factor-α and interleukin-6. Our findings indicate that combined treatment is a better approach for treating stroke compared with m展开更多
目的分析优化溶栓流程对轻型急性缺血性卒中患者院内延误及预后的影响。方法回顾性收集秦皇岛市第一医院2015年7月-2017年6月行静脉溶栓治疗的轻型缺血性卒中患者资料。按照流程优化时间前后,分为优化组和对照组。比较两组入院到溶栓时...目的分析优化溶栓流程对轻型急性缺血性卒中患者院内延误及预后的影响。方法回顾性收集秦皇岛市第一医院2015年7月-2017年6月行静脉溶栓治疗的轻型缺血性卒中患者资料。按照流程优化时间前后,分为优化组和对照组。比较两组入院到溶栓时间(door to needle time,DNT)、溶栓后7 d NIHSS评分和溶栓后3个月mRS评分。结果共纳入57例轻型缺血性卒中患者,平均年龄61.7±5.4岁,男性44例(77.2%)。其中对照组24例,优化组33例。两组患者一般资料比较差异无统计学意义。与对照组比较,优化组DNT缩短(68.7±19.1 vs 88.8±23.1 min,P=0.001),DNT≤60 min的患者比例更高(42.4%vs 12.5%,P=0.015);溶栓治疗后3个月mRS评分更低[0(0~0.5)vs 0.5(0~2),P=0.017],良好预后(mRS评分≤1分)患者比例更高(87.9%vs 62.5%,P=0.024)。结论优化溶栓流程可以缩短轻型急性缺血性卒中患者的DNT,提高DNT≤60 min达标率,改善患者3个月预后。展开更多
基金supported by the National Natural Science Foundation of China,No.81371301
文摘Mild therapeutic hypothermia has been shown to mitigate cerebral ischemia, reduce cerebral edema, and improve the prognosis of patients with cerebral ischemia. Adipose-derived stem cell-based therapy can decrease neuronal death and infiltration of inflammatory cells, exerting a neuroprotective effect. We hypothesized that the combination of mild therapeutic hypothermia and adipose-derived stem cells would be neuroprotective for treatment of stroke. A rat model of transient middle cerebral artery occlusion was established using the nylon monofilament method. Mild therapeutic hypothermia（33°C） was induced after 2 hours of ischemia. Adipose-derived stem cells were administered through the femoral vein during reperfusion. The severity of neurological dysfunction was measured by a modified Neurological Severity Score Scaling System. The area of the infarct lesion was determined by 2,3,5-triphenyltetrazolium chloride staining. Apoptotic neurons were detected by terminal deoxynucleotidyl transferase-mediated d UTP-biotin nick end labeling（TUNEL） staining. The regeneration of microvessels and changes in the glial scar were detected by immunofluorescence staining. The inflammatory responses after ischemic brain injury were evaluated by in situ staining using markers of inflammatory cells. The expression of inflammatory cytokines was measured by reverse transcription-polymerase chain reaction. Compared with mild therapeutic hypothermia or adipose-derived stem cell treatment alone, their combination substantially improved neurological deficits and decreased infarct size. They synergistically reduced the number of TUNEL-positive cells and glial fibrillary acidic protein expression, increased vascular endothelial growth factor levels, effectively reduced inflammatory cell infiltration and down-regulated the m RNA expression of the proinflammatory cytokines interleukin-1β, tumor necrosis factor-α and interleukin-6. Our findings indicate that combined treatment is a better approach for treating stroke compared with m
文摘目的分析优化溶栓流程对轻型急性缺血性卒中患者院内延误及预后的影响。方法回顾性收集秦皇岛市第一医院2015年7月-2017年6月行静脉溶栓治疗的轻型缺血性卒中患者资料。按照流程优化时间前后,分为优化组和对照组。比较两组入院到溶栓时间(door to needle time,DNT)、溶栓后7 d NIHSS评分和溶栓后3个月mRS评分。结果共纳入57例轻型缺血性卒中患者,平均年龄61.7±5.4岁,男性44例(77.2%)。其中对照组24例,优化组33例。两组患者一般资料比较差异无统计学意义。与对照组比较,优化组DNT缩短(68.7±19.1 vs 88.8±23.1 min,P=0.001),DNT≤60 min的患者比例更高(42.4%vs 12.5%,P=0.015);溶栓治疗后3个月mRS评分更低[0(0~0.5)vs 0.5(0~2),P=0.017],良好预后(mRS评分≤1分)患者比例更高(87.9%vs 62.5%,P=0.024)。结论优化溶栓流程可以缩短轻型急性缺血性卒中患者的DNT,提高DNT≤60 min达标率,改善患者3个月预后。
