人尿激肽原酶对急性脑梗死侧支循环及脑血流灌注影响的多模态CT研究

摘要

Objective To study the impact of human urinary kallidinogenase (HUK) on collateral circulation and blood perfusion in patients with acute cerebral ischemia (ACI) using multi-modality CT methods. Methods In a randomized controlled clinical trial, 75 patients diagnosed with ACI were enrolled and divided into experiment group (treated with HUK)and control group (untreated with HUK). All participants underwent computer technology perfusion (CTP) and computed tomographic angiography (CTA) examination before and fourteenth day after treatment. The CT cerebral perfusion imaging (CTP), CT cerebrovascular imaging (CTA) and National Institutes of Health Stroke Scale (NIHSS) score were analyzed in two groups. The NIHSS score, cerebral blood flow (CBF), cerebral blood volume (CBV), mean transit time (MTT), and time to peak (TTP) were compared between the two groups before and after 14 days therapy. Results ① After treatment, The two group showed increased CBF and CBV values and decreased MTT and TTP values. The CBF improvement was significantly better in the HUK-treated group than in the control group (t=2.470,P<0.05).②MTT and TTP were shorter in the HUK-treated group than in the control group (t=2.126, t=2.213, P<0.05).③ CTA maximum intensity projection (MIP) sequence revealed that the number of patients collateral vessels was significantly increased in the HUK-treated group than in the control group ( x2=4.265, P<0.05). ④The NIHSS score improvement was significantly better in the HUK-treated group after 14 days treatment than in the control group (t=4.330, P<0.05). Conclusion Human urinary kallidinogenase can improve blood perfusion and ameliorates neurological deficits. It is a safe and effective drug for treating ACI patients. The multi-modality CT methods are effective measure to assess blood perfusion and collateral circulation in patients with acute cerebral ischemia.%目的 运用多模态CT脑成像技术来评估人尿激肽原酶(human urine kininogenase,HUK)对急性脑梗死患者的血流灌注及侧支循环,探讨其可能的作用机制.方法 收集急性前循环脑梗死患者(acute anterior circulation cerebral infarction)75例,分为HUK治疗组和对照组(常规药物治疗),于治疗前、治疗第14天行两组患者的CT脑灌注成像(computer technology perfusion,CTP)和CT脑血管成像(computed tomographic angiography,CTA),观察两组CT脑灌注成像各参数(CBF、CBV、MTT、TTP)值及CTA侧枝血管的变化情况.结果 ①两组患者治疗后较治疗前CT脑灌注参数CBF、CBV均升高,参数MTT、TTP降低.HUK治疗组梗死区14 d后CBF升高较对照组明显(t=2.470,P