Objective To summarize the diagnosis and endovascular treatment of middle cerebral artery (MCA) bifurcation aneurysm. Methods Between January 2010 and June 2011, 32 patients with MCA bifurcation aneurysm underwent endovascular treatment. There were 12 males and 20 females, aged 49.5 years on average (range, 35-81 years). All patients had sudden headache, 2 cases had disturbance of consciousness and hemi plegia, and 22 cases had a history ofhypertension. Before operation, 10 cases were classified as Hunt-Hess level I, 15 cases as level II, and 7 cases as level III; 24 cases were classified as Fisher level II and 8 cases as level III. The patients underwent coil embolization using single microcatheter in 16 cases, using double microcatheter in 7 cases, using balloon-assisted in 4 cases, using single stent in 4 cases, and using double stent in 1 case. Results The results of postoperative immediate digital subtraction angiography showed that 30 patients achieved dense embolization, and 2 patients using single microcatheter achieved approximated dense embolization. Among them, 18 cases suffered extensive subarachnoid hemorrhage, thus lumbar puncture continued drainage was performed for 3-7 days; the other 14 cases had l ittle subarachnoid hemorrhage, lumbar puncture released hemorrhagic cerebrospinal fluid discontinuously, and after1 week, head CT demonstrated that subarachnoid hemorrhage was significantly decreased. At 1 day after surgery, 2 patients had local cerebral ischemia; after Nimotop and other drugs were used for 1 week, the symptom was alleviative. All 32 patients were followed up 4 to 17 months. No aneurysm rupture and bleed occurred during follow-up; no other complications or sequelae was observed except for 3 cases of hemiparesis and 1 case of aphasia. The computed tomographic angiography examination showed no re-open of dense embolized aneurysm at 3, 6 months, and 1 year after surgery. Conclusion As long as appropriate intervention treatment method is chosen, endovascular treatment of MCA bifurcation aneurysm is safe and effective.
Objective To compare the therapeutic effect of one-stage direct revascularization and medicine therapy for the treatment of ischemic moyamoya disease. Methods From March 2002 to March 2008, 18 patients with ischemic moyamoyadisease (12 males and 6 females) were treated, aged 9 to 33 years old. Eighteen patients presented with ischemic stroke, including 11 cases of cerebral infarction and 7 cases of transient ischemic attack. According to Chinese ischemic cardiovascular diseases evaluation tools, 17 patients were classified as low risk ischemic stroke and 1 as modernte risk ischemic stroke. Different levels of occlusion branch of the intracranial carotid arteries and pathosis collaterals were identified by DSA. Fourteen patients and 4 patients were showed unilateral and bilateral hypoperfusion of cerebral blood flow by single photon emission computed tomography, respectively. Eleven patients received superficial temporal artery-middle cerebral artery anastomosis and 7 patients received medicine (anti-PLT agglutinin and calcium channel blocker). Results All incisions healed at stage I. There was no stroke events during perioperation. Anastomosis vessel vasospasm occurred in 2 patients 5 days after operation; and hyperperfusion syndrome in 1 patient 2 weeks afteroperation. All patients were followed up 13-32 months (mean 18 months). In 11 anastomosis patients, 6 underwent 6 stroke events within 12 months; in 7 medicine patients, 6 underwent 11 stroke events within 12 months; and showing a significant difference (P lt; 0.05). The stroke recurrence rate was 85.7% in medicine patients and 54.5% in anastomosis patients 12 months after therapy. DSA showed pathosis collaterals in 7 anastomosis patients and 6 medicine patients 6 months after therapy. After 12 months according to modified Rankin scale, the scores of anastomosis patients were 3 points in 1 case, 2 points in 6 cases and 0-1 point in 4 cases, and the scores of medicine patients were 2 points in 2 cases and 0-1 point in 5 cases; showing no significant difference (P gt; 0.05). Conclusion As long as onset of stroke occurred and ischemic moyamoya disease is diagnosed, one-stage direct revascularization should be performed, which can reduce the rate of stroke recurrence risk and slow down the progression of disease.
Objective To discuss the optimal time for operation in patients with malignant middle cerebral artery (MCA) syndrome. Method The relation between effectiveness and operating time was analyzed in 47 patients to compare the effects of early and delayed operation by SPSS10.0. Results Among 27 patients undergoing early operation, 18 were cured or restored, 4 seriously disabled and 5 died. While among 20 patients undergoing delayed operation, only 9 were cured or restored, 4 seriously disabled and 7 died. The prognosis of delayed operation group was worse than that of early operation group. Conclusions Selecting the optimal time to operate may decrease the mortality and morbidity of MCA syndrome.
目的 探讨显微手术治疗破裂大脑中动脉动脉瘤（MCAA）的适应证、术前评估及手术技巧。 方法 回顾性分析2008年1月－2011年1月经翼点入路行显微外科手术治疗的65例破裂MCAA患者的临床资料。其中男40例，女25例；年龄22～78岁，平均46.8岁。术前Hunt-Hess分级：Ⅰ级15例，Ⅱ级25例，Ⅲ级13例，Ⅳ级10例，Ⅴ级2例。动脉瘤直径＜5 mm 10个，5～15 mm 36个，15～25 mm 15个，＞25 mm 4个，平均7.8 mm。其中56例动脉瘤位于大脑中动脉分叉部，5例位于大脑中动脉的M1段，4例位于分叉后M2段。 结果 手术夹闭动脉瘤60例，余5例行动脉瘤夹闭加包裹术。患者术后获随访3～36个月，平均16个月，均无动脉瘤复发或再出血发生。按格拉斯哥预后评分（GOS）结果评定：恢复良好58例（GOS 4～5分），差5例（GOS 2～3分），死亡2例（GOS 1分）。 结论 充分的术前评估，合适的手术入路选择，以及手术技巧的灵活应用是显微外科手术成功治疗破裂MCAA的保证。
ObjectiveTo evaluate the feasibility of monitoring of permanent middle cerebral artery occlusion (MCAO) model in C57BL/6 mice by Laser Doppler flowmetry. MethodsC57BL/6 mice were divided into 2 groups randomly:sham group and permanent MCAO group. Permanent MCAO model was established with the method of suture inserted into the internal carotid artery. Sufficiency of MCAO was monitored by Laser Doppler flowmetry during ischemia in mice. The neurological deficit score was assessed and the cerebral infarction size was measured by 2, 3, 5-triphenytetrazolium chloride (TTC) staining technique twenty-four hours after MCAO. ResultsIn the MCAO group, the local blood flow was decreased from the preoperative value of (186.78±62.50) PU to the postoperative value of (25.80±7.66) PU. Cerebral blood flow was reduced by 90.4% during MCAO. The neurological deficit score was 2.48±0.36. The cerebral infarction area accounted for 39.79% by TTC staining. However, the cerebral blood flow fluctuations were not reduced and the neurological deficit score was found normal in the sham group. Furthermore, there was no cerebral infarction lesion in the sham group. ConclusionMonitoring by Laser Doppler flowmetry is efficient for evaluating the success rate of MCAO.
Superficial temporal artery (STA) - middle cerebral artery (MCA) bypass surgery has been widely used to treat patients with moyamoya disease, and its application value in symptomatic internal carotid artery (ICA)/MCA stenosis/occlusion remains controversial. With the development of imaging, micro-devices and surgical techniques, and the deepen understanding of diseases, the effectiveness of STA-MCA bypass surgery in the treatment of symptomatic ICA/MCA stenosis/occlusion is further required. This article reviews the process of development and evolution of this surgical technique, as well as the significance and deficiencies of several randomized controlled trials of ICA/MCA treatment in the past, and looks forward to possible improvements in future research, so as to clarify the way for further randomized controlled study.
ObjectiveTo explore the effects of interleukin 10 (IL-10) gene modified bone marrow mesenchymal stem cells (BMSCs) on the expression of inflammatory cytokines and neuronal apoptosis in rats after cerebral ischemia reperfusion injury.MethodsBMSCs were cultured by whole bone marrow adherence screening method. The properties of BMSCs were identified by immunocytochemical methods. BMSCs at passage 3 were transfected with recombinant adenovirus IL-10 gene (AdIL-10-BMSCs). The model of middle cerebral artery occlusion was made in 40 adult male Sprague Dawley rats by thread embolism method. The rats were randomly divided into 4 groups (n=10). At 3 hours after modelling, the rats of groups A, B, C, and D received tail intravenous injection of 1 mL L-DMEM medium containing 10% FBS, 61.78 ng IL-10, 1 mL BMSCs suspension (2×106 cells/mL), and 1 mL AdIL-10-BMSCs cell suspension (2×106 cells/mL), respectively. The cells were labelled with BrdU before cell transplantation in groups C and D. At 7 days after reperfusion, the brain tissue was harvested to detect the expression of OX42 by immunohistochemical assay, to determine the concentration of tumor necrosis factor α (TNF-α) and IL-1β by ELISA, and to detect the apoptosis by TUNEL assay. BrdU labelled cells were observed by immunofluorescence staining in groups C and D.ResultsBrdU labelled positive cells with green fluorescence were observed in the brain tissue of groups C and D, which mainly distributed in the striatum, cerebral cortex, and subcortex around the infarction area. The number of OX42 positive cells was significantly less in groups B, C, and D than group A (P<0.05), and in group D than groups B and C (P<0.05). Compared with the other 3 groups, the contents of TNF-α and IL-1β significantly decreased in group D (P<0.05). TUNEL assay showed that the apoptotic cells (TUNEL positive cells) were mainly seen in the striatum and fronto parietal subcortical tissues (equivalent to ischemic penumbra). The number of TUNEL positive cells in group D was significantly less than that in groups A, B, and C (P<0.05).ConclusionAdIL-10-BMSCs can inhibit secretion of TNF-α and IL-1β from microglial cells and inhibit the nerve cell apoptosis around infarct brain tissue, which might contribute to its protective role upon cerebral ischemia reperfusion injury.