脑损伤

Background: The neuron death resulting from traumatic brain injury can be classified into 3 types:(1)neuron death due to primary injury;(2)neuron necrosis due to secondary injury such as hemorrhage, compression, anoxemia and ischemia;(3)neuron apoptosis due to inflammatory factor, cytokine,, excitatory transmitter, Ca~(2+) overload and oxygen radical et al.

引言创伤性脑损伤所致的神经元死亡主要有三种：①原发性损伤所致的神经元直接死亡；②外伤后出血、压迫、缺血缺氧等继发性损伤因素所引起的神经元坏死；③炎性介质、细胞因子、兴奋性递质、Ca~(2+)超载、氧自由基等因素所诱发的神经元凋亡。

If there is still activity in the brain stem, a person is considered to have sustained brain damage, rather than brain death.

如果还有活动，在脑干，一个人被认为有持续的脑损伤，而非脑死亡。

Results in the contusive and lacerated brain tissue, the expression of ngf protein was increased after tbi.

结果 脑损伤后ngf在老年和青壮年脑挫裂伤组织中的表达均明显增强；老年组脑挫裂伤组织中的ngf蛋白表达显著性低于青壮年组（p ＜0.05）。

The mechanism that acupuncture preconditioning induces cerebral ischemia tolerance and the reason of cerebral ischemia injuries have been studied from various angles and set up the theory of self-injurious mechanism and provide the theory foundation in preventing infarct, developing medicine and evaluating medical result.

关于针刺预处理后诱导脑缺血耐受机制及缺血性脑损伤的病因和发病机制，近年来，已从不同的角度进行了研究，并相应建立了自身破坏过程机制的假说，为防治脑梗死、开发新药和评价药物疗效提供了理论基础。

However, the level of NGF protein in the contusive and lacerated brain tissue was statistically lower in the aged group than in the young group (P.05). Conclusion The expression of NGF after TBI is influenced by age.

结果 脑损伤后NGF在老年和青壮年脑挫裂伤组织中的表达均明显增强；老年组脑挫裂伤组织中的NGF蛋白表达显著性低于青壮年组（P ＜0.05）。

Methods effects of ligustrazine on breath time of head decollated mice and survival time of hypoxic mice induced by sodium nitrite were observed and neurological score and infarct area in the middle cerebral artery occlusion rats were measured.

采用小鼠断头法、亚硝酸钠(NaNO2)致死法、大鼠大脑中动脉栓塞法，通过观察断头喘息时间、亚硝酸钠致死时间、脑缺血行为评分、脑缺血面积，明确川芎嗪对脑损伤的保护作用。

Methods The effects of ligustrazine on breath time of head decollated mice and survival time of hypoxic mice induced by sodium nitrite were observed and neurological score and infarct area in the middle cerebral artery occlusion rats were measured.

采用小鼠断头法、亚硝酸钠(NaNO2)致死法、大鼠大脑中动脉栓塞法，通过观察断头喘息时间、亚硝酸钠致死时间、脑缺血行为评分、脑缺血面积，明确川芎嗪对脑损伤的保护作用。

It has been found that ectogenic GDNF has nervous protective effec,but ectogenic GDNF cannot enter blood brain barrier.

传统观点认为，星形胶质细胞是神经系统的支持细胞，构成神经组织的网架而起支持作用，与神经元的解剖位置关系紧密，参与中枢神经系统的免疫反应，参与构成血脑屏障，目前研究发现，脑缺血时星形胶质细胞异常活跃，通过合成多种蛋白质、细胞因子和神经营养因子等对神经元起保护作用，对缺血性脑损伤的发展和转归具有重要意义。

Objective To evalue clinical significance of 1H-MRS in differentical diagnosis and clinical assessment between radiation-induced brain injury and tumor recurrence.

目的 探讨氢质子磁共振波普(1H-MRS)在脑肿瘤放射治疗过程中，对放射性脑损伤和脑肿瘤复发的评估及两者鉴别诊断中的临床意义。

All infants had at least one organ dysfunction in addition to HIE.Renal,cardiovascular,pulmonary,hepatic and gastroenteric was present in 40%～80% of infants with good outcome and 55%～92% of infants with adverse outcome.

结果 共有89例患儿纳入研究范围，所有患儿都存在脑损伤外的至少一种器官的损伤，肺、心血管、肾、肝、消化道损伤的发生率在预后好的组分别为57%、65%、40%、50%、80%，在预后差的组分别为71%、78%、55%、69%、92%。

Recall that, in the Kolmogorov axiomatization, measurable sets are the sets which have a probability or, in other words, the sets corresponding to yes/no questions that have a probabilistic answer.

延期开工的Kolmogorov宣布要衡量所有套职能有限许多坐标限制在于衡量子寅。换句话说，如果是/否的问题回答f可看的价值观念在许多最有限坐标，然后它有一个概率的答案。

The experimental results showed that the algorithm can filter singular points and remain fixity of the target edge.

实验表明：基于模糊理论的图像智能滤波方法比常规图像滤波方法运算量小，它既能去除奇异点，又能保持图像中目标的边缘不变性，具有很好的滤波效果。