急性脑梗死患者血清白细胞介素18的动态改变

背景已证实白细胞介素18参与了急性脑梗死的发病过程,并与脑卒中发病时间,患者血沉变化及神经功能缺损程度和脑CT的低密度值成正相关.目的观察急性脑梗死患者血清白细胞介素18水平随发病时间的变化而发生的动态改变.设计以患者为观察对象,以健康者为对照组的验证性分析.单位一所市级医院神经内科.对象选择2002-11/2004-01茂名市人民医院神经内科的住院急性脑梗死患者46例,男29例,女17例.健康对照组40例均为本院健康体检者,男27例,女13例.均知情同意.方法所有病例均于发病后第1天,第7天,第14天,第21天4次,健康对照组于体检当天空腹,均抽取外周静脉血2 mL,3 000 r/min,4℃,离心15 min,取血清.采用酶联免疫吸附法测定白细胞介素18水平.主要观察指标急性脑梗死患者发病后第1天,第7天,第14天,第21天和健康对照组的血清白细胞介素18水平.结果纳入分析的46例患者,40例健康对照者血样合格,均进入结果分析.①急性脑梗死患者的血清白细胞介素18水平在发病后的第1天和第7天均明显高于健康对照组[(178±41)ng/L,(104±34)ng/L,(65±14)ng/L,P均＜0.01],而发病后的第14天和第21天的白细胞介素18水平则与健康对照组基本一致[(88±36)ng/L,(72±33)ng/L,(65±14)ng/L,P均＞0.05].急性脑梗死患者第1天的血清白细胞介素18水平明显高于第7天,第14天,第21天(P＜0.05～0.01);第7天的血清白细胞介素18水平高于第21天(P＜0.05).结论白细胞介素18水平在发生急性脑梗死第1天时明显升高,随发病和治疗时间的延长,其水平逐渐下降.

Dynamic changes of serum interleukin-18 level in patients with acute cerebral infarction

BACKGROUND: It has been proved that interleukin-18 (IL-18) involves in the development of acute cerebral infarction (ACI) and is positively correlated with the time of brain stroke onset, erythrocyte sedimentation rate (ESR), as well as neurological deficit and low-density value of brain CT.OBJECTIVE: To investigate the dynamic changes of serum IL-18 in the course of ACI.DESIGN: Verification analysis with patients as subjects and healthy volunteers as controls.SETTING: Department of neurology of a municipal hospital.PARTICIPANTS: Totally 46 inpatients (29 males and 17 females) with ACI were randomly selected from the Department of Neurology of People's Hospital, Maoming City, between December 2002 and January 2004.Meanwhile, 40 healthy controls (27 males and 13 females) were recruited from those who came to the hospital for routine physical examination. All the participants signed informed consent.METHODS: Fasting peripheral vein blood of 2 mL was collected from the patients on the 1st, 7rh, 14th and 21st days of ACI onset, and from healthy controls on the day of routine examination. The blood samples were centrifuged at 3 000 r/minute for 15 minutes at 4 ℃, and then the supernatant was collected for detecting IL-18 level by ELISA.MAIN OUTCOME MEASURES: The serum IL-18 level of patients on the 1st, 7th 14th and 21st days of ACI onset and that of healthy controls on the day of routine examination.RFSULTS: Totally 46 patients and 40 healthy controls were enrolled in this study and all data were statistically analyzed. The level of serum IL-18 was significantly higher in the patients with ACI than in normal controls on the 1st and 7th days of onset [(178±41) ng/L, (104±34) ng/L, (65±14) ng/L, P ＜ 0.01],but was similar on the 14th and 21st days [(88±36) ng/L, (72±33) ng/L,(65±14) ng/L, P＞ 0.05]. The level of serum IL-18 in ACI patients was significantly higher on the 1st day than on the 7th, 14th and 21 st days of the onset (P ＜ 0.05-0.01); moreover, it was also significantly higher on the 7th day than on the 21st day of the onset (P ＜ 0.05).CONCLUSION: The level of IL-18 increases obviously on the 1st day of ACI onset, and gradually decreases with the extended course of disease and time of treatment.