1,6-二磷酸果糖对大鼠热性惊厥性脑损伤保护作用的研究  

Protective effects of fructose-1,6-diphosphate on brain damage caused by febrile seizures in rats

作　　者：周戬平[1] 王帆[2] 李瑞林[1] 袁宝莉[1] 李静[1] 徐尔迪[1] 

机构地区：[1]西安交通大学第二医院儿科,710004 [2]陕西省人民医院妇产科

出　　处：《中华儿科杂志》2004年第2期129-133,共5页Chinese Journal of Pediatrics

基　　金：陕西省自然科学基金部分资助 (2 0 0 1SM 77)

摘　　要：目的　探讨 1,6 二磷酸果糖 (FDP)对大鼠热性惊厥性脑损伤是否具有保护作用。方法　 30只雄性SD大鼠随机均分为热性惊厥组 (FS) ,盐水对照组 (NS)及果糖干预组 (FD)。水浴法建立热性惊厥模型 ;FD组于惊厥前 30min腹腔注射FDP 2 5mg/ 10 0 g大鼠体重 ;而NS组腹腔注射相同体积的 0 9%氯化钠溶液。观察各组大鼠惊厥表现并制作电镜标本以了解海马CA1区神经元、线粒体及突触超微结构变化。结果　诱发热性惊厥前腹腔注射FDP可使大鼠惊厥潜伏期延长 [FD组为(5 16± 0 88)min ,FS组为 (4 2 5± 0 98)min ,NS组为 (4 2 3± 0 87)min]、惊厥持续时间缩短 [FD组为 (47± 34)s ,FS组为 (6 6± 32 )s,NS组为 (6 6± 32 )s]、惊厥级别下降。以上 3组数据中 ,FD组与其他两组相比差异均有显著性 (P <0 0 5 )。电镜标本观察发现FDP可使大鼠海马CA1区神经元变性坏死减轻 ,神经元变性坏死百分比在FD组、FS组及NS组分别为 13%、2 8%及 30 % ,FD组与其他两组相比差异有显著性 (P <0 0 5 )。FDP防止神经突触间隙异常增宽 ,平均神经突触间隙在FD组、FS组及NS组分别为 (6 4 7± 0 37) μm、(7 6 0± 0 36 ) μm及 (7 5 3± 0 4 0 ) μm ,FD组与其他两组相比差异有显著性 (P <0 0 1)。Objective Febrile seizure (FS) is a pediatric emergency. The reiterative attacks of FS may result in brain damage to various extents. Fructose-1, 6-diphosphate, serving as a cellular energy substance, has been applied to clinical practice for many years and has shown its importance in adjuvant treatment of diseases with myocardial damage. This study aimed to explore the potentiality of protecting rats' brain damage caused by febrile seizure with fructose-1, 6-diphosphate (FDP). Methods Thirty 21-day-old male Sprague-Dawley (SD) rats were randomly divided into febrile seizure group (FS), sodium chloride solution (NS) control group and FDP intervention group (FD). Febrile seizure was induced by hyperthermal bath at 45℃ in the present study. No intervention treatment was given to rats in FS group before febrile seizure. Thirty minutes before febrile seizures, rats in FD group were given peritoneal injection of FDP at a dose of 25 mg per 100 g of body weight, whereas the same volume of 0.9% sodium chloride solution was injected into peritoneum of rats in NS group. Manifestations of seizure and differences in seizure latency, duration of seizure and seizure severity were observed in all the 3 groups. Samples of rat brain were prepared for electron microscopy in order to understand the characteristics of the ultrastructural changes in mitochondria, interspace of neuronal synapses and neurons of hippocampal region CA_1. Results Data collected from this study indicated that peritoneal injection of FDP at 25 mg per 100 grams of body weight 30 minutes before febrile seizures could result in improvement of the clinical manifestation of the rats caused by febrile seizures. Specifically speaking, the seizure latency was prolonged, the duration of seizures was shortened and severity of seizure was reduced. Analysis of variance and q -test on the data collected from the 3 groups revealed that there were significant differences between FD group and the other two groups ( P <0.05), yet no significant difference was found betwee

关 键 词：1.6-二磷酸果糖 大鼠 热性惊厥 脑损伤 脑保护 

分 类 号：R720.597[医药卫生—急诊医学] R977.6[医药卫生—儿科]