血清基质蛋白酶9白介素18在急性脑梗死患者的表达及与预后的关系

目的探讨血清基质蛋白酶9(MMP-9)及白介素18(IL-18)在急性脑梗死患者的表达及与预后的关系。方法选择126例急性脑梗死患者为研究对象(观察组),选择同期体检的80例健康者为对照组。比较2组患者血清MMP-9、IL-18水平及与观察组患者病情严重程度的关系。结果观察组血清MMP-9及IL-18水平显著高于对照组(P<0.05);观察组轻型、中型及重型患者血清MMP-9及IL-18水平依次升高(P<0.05);Logistic回归分析结果显示,MMP-9及IL-18水平与脑梗死患者NIHSS评分显著相关(P<0.05)。结论急性脑梗死血清MMP-9及IL-18水平显著升高,且与患者病情严重程度相关,提示炎症反应在急性脑梗死发病机制中发挥重要作用。     

MMP-9在扩大时间窗急性脑梗死静脉溶栓出血转化中的意义

目的探讨基质金属蛋白酶-9(MMP-9)与扩大时间窗至发病6 h内急性脑梗死重组组织型纤溶酶原激活剂(rt-PA)静脉溶栓治疗的关系。方法对70例本院神经内科扩大时间窗内行rt-PA静脉溶栓的急性脑梗死患者分别测定溶栓前后的血浆MMP-9水平,并与急性脑梗死非溶栓对照组比较。结果急性脑梗死患者溶栓组、非溶栓对照组入院12 h后血浆MMP-9水平和入院时比较都有显著差异(P<0.05);有出血转化者MMP-9水平皆较无出血转化为高(P0.05)。结论急性脑梗死MMP-9表达水平与出血转化...     

血清MMP-9与脑梗死患者及其颈动脉粥样硬化斑块稳定性的关系研究

目的检测具有不同性质颈动脉粥样硬化斑块的脑梗死患者的血清基质金属蛋白酶-9（MMP-9）水平,探讨颈动脉粥样硬化斑块稳定性及相关炎性标志物MMP-9水平与脑梗死的关系。方法采用彩色多普勒超声检查48例颈内动脉系统的急性脑梗死患者（CI组）颈动脉粥样硬化斑块,同时检测患者血清MMP-9水平,并与20例慢性脑供血不足患者（CCCI组）及20例体检健康者（对照组）比较;根据斑块性质将CI组分为不稳定斑块组、稳定斑块组及无斑块组3个亚组,并进行组内比较。结果脑梗死组斑块检出率、不稳定斑块率及血清MMP9水平均明显高于慢性脑供血不足组及对照组（P〈0．05）;脑梗死不稳定斑块组MMP-9水平显著高于脑梗死稳定斑块组,脑梗死稳定斑块组高于脑梗死无斑块组（P〈0．01）。结论颈动脉粥样硬化斑块及其稳定性与脑梗死发生有密切关系,具有不同性质颈动脉斑块的脑梗死患者的血清MMP-9水平存在差异,MMP-9可能是不稳定性粥样硬化斑块及脑梗死的一个潜在的血清标志物。     

溶栓治疗急性脑梗死患者血浆基质金属蛋白酶-9含量变化及临床意义

目的 探讨急性脑梗死患者尿激酶动脉溶栓治疗后血浆基质金属蛋白酶-9(Matrix metalloproteinases-9,MMP-9)的变化及临床意义.方法 对20例尿激酶动脉溶栓治疗的急性脑梗死患者MMP-9基础值和溶栓后水平进行测定,比较溶栓前后以及与健康对照组血浆MMP-9水平.结果 急性脑梗死患者溶栓后MMP-9水平比对照组和基础值显著升高(P<0.05);溶栓后发生出血性转化的患者MMP-9水平较溶栓前有显著增加(P<0.05),与无出血患者相比有增高趋势但无统计学差异;溶栓后完全再通患者MMP-9较基础值明显升高(P<0.05).结论 尿激酶溶栓可能激活了MMP-9,增加溶栓后出血的风险,并且MMP-9可能参与了脑组织缺血再灌注损伤.     

基质金属蛋白酶-2、9与脑梗死初发及复发相关性研究

目的研究脑梗死初发及复发患者血清基质金属蛋白酶-2、9(matrix metalloproteinase-2,-9)的水平,探讨其临床意义。方法选取初发脑梗死组343例,复发组307例,320例健康体检者作为对照组,检测3组血清MMP-2、MMP-9水平。结果复发组MMP-2、MMP-9表达显著高于初发组,初发组高于对照组(P0.05);初发组及复发组中MMP-2与MMP-9表达无相关性(P0.05)。结论 MMP-2、MMP-9在脑梗死发生发展中起重要作用,可作为检查脑梗死复发分子标记物。     

高三酰甘油血症对脑梗死患者血清基质金属蛋白酶-9和C-反应蛋白水平的影响

目的 探讨高三酰甘油(TG)血症对脑梗死患者血清基质金属蛋白酶-9(MMP-9)、C-反应蛋白(CRP)水平的影响.方法 检测36例脑梗死患者(高TG血症及TG正常各18例)及17名健康对照者(正常对照组)血清TG、MMP-9和CRP水平.对MMP-9、CRP和TG水平进行相关分析.结果 脑梗死组患者中高TG患者血清MMP-9、CRP、TG水平显著高于正常TG组和正常对照组(均P<0.01),且正常TG组MMP-9、CRP水平显著高于正常对照组(均P<0.01).相关分析显示:脑梗死患者高TG组和正常TG组中血清MMP-9与CRP、TG,CRP与TG均呈正相关,而正常对照组各指标间无相关性.结论 脑梗死患者血清MMP-9和CRP水平增高,高TG血症患者增高更明显;并且血MMP-9、CRP水平与TG水平呈正相关.     

血清基质金属蛋白酶-9、白细胞计数与脑梗死体积及近期预后的关系

目的研究血清基质金属蛋白酶-9(MMP-9)水平、白细胞计数与缺血性脑卒中的梗死灶体积大小以及预后的关系,并探讨其潜在的机制.方法对124名缺血性脑卒中患者在发病后24 h抽取肘静脉血,用酶联免疫吸附测定法测定MMP-9水平,并进行白细胞计数.根据脑卒中患者临床神经功能缺损程度评分标准对患者入院以及出院时进行评分,所有患者均进行CT/MRI检查.结果脑梗死组MMP-9水平及白细胞计数均明显高于腔隙性脑梗死组以及对照组.相关分析结果表明,MMP-9水平与预后呈等级正相关(r=0.180,P=0.046).白细胞数增高组脑梗死与腔梗构成比、病死率、MMP-9水平明显高于白细胞数正常组,而治疗有效率则明显低于白细胞数正常组.结论脑梗死急性期血清MMP-9水平、白细胞计数可能与脑梗死患者梗死体积大小以及近期预后有密切的关系.     

首次脑梗死患者血浆MMP-9随访研究

目的 观察首次脑梗死患者血浆基质金属蛋白酶-9 (matrixmetalloproteinase-9,MMP-9)的动态变化,探讨MMP-9在脑梗死发生发展过程中的意义.方法 随访监测52例首次脑梗死患者发病2 d内、2周、3个月及6个月以及20例健康体检者血浆MMP-9的含量.结果 急性脑梗死发病2 d内的血浆MMP-9水平显著高于发病2周后(P<0.01)和健康对照组(P<0.01),发病2周后血浆MMP-9水平高于健康对照组(P<0.05),发病3个月及6个月的血浆MMP-9水平与健康对照组比较差异无统计学意义(P>0.05).神经功能缺损程度与脑梗死发病2 d内血浆MMP-9水平呈正相关(r＝0.769,P<0.01).结论 脑梗死急性期MMP-9水平升高,MMP-9水平可以反映急性脑梗死的病情严重程度.脑梗死恢复期MMP-9水平升高不明显,血浆MMP-9可能不能作为监测脑梗死复发前期的生化指标.     

急性脑梗死患者血清白细胞介素-18和基质金属蛋白酶-9水平及其临床意义

目的探讨急性脑梗死患者血清白细胞介素-18(IL-18)和基质金属蛋白酶-9(MMP-9)水平的变化及其临床意义。方法 53例急性脑梗死患者,根据脑梗死体积和临床神经功能缺损程度评分分组。采用酶联免疫吸附法(ELISA)检测血清IL-18和MMP-9水平并与正常对照组比较。应用SPSS 13.0版统计软件进行分析。结果急性脑梗死患者血清IL-18和MMP-9水平明显高于正常对照组(P<0.01),大梗死组患者血清IL-18和MMP-9水平高于小梗死组(P<0.05),患者血清IL-18和MMP-9水平与脑梗死体积呈正相关(P<0.05);轻型组、中型组、重型组患者血清IL-18和MMP-9水平依次升高,各组之间差异有统计学意义(P<0.05),患者血清IL-18和MMP-9水平与临床神经功能缺损程度评分呈正相关(P<0.05)。结论急性脑梗死患者血清IL-18和MMP-9水平升高;血清IL–18和MMP-9水平与脑梗死体积及临床神经功能缺损程度相关,检测其水平有助于判断急性脑梗死患者的病情及预后。     

血尿酸、hs-CRP、MMP-9与老年急性脑梗死发病及预后的相关性分析

目的 探究血清血尿酸、超敏C反应蛋白(hs-CRP)、基质金属蛋白酶9(MMP-9)与老年急性脑梗死患者发病及预后的相关性。方法 选择2020年6月-2021年9月我院收治的老年急性脑梗死患者73例作为观察组,选择同期于我院体检50例健康老年人为对照组,比较两组血尿酸、hs-CRP、MMP-9水平;按卒中量表(NIHSS)评分将患者分为轻度组、中度组、重度组,比较血尿酸、hs-CRP、MMP-9水平,并分析相关性;按神经功能缺损评分(mRS)评分将患者分为预后良好组、预后不良组,比较血尿酸、hs-CRP、MMP-9水平,并分析相关性。结果 观察组血尿酸、hs-CRP、MMP-9水平均较对照组显著升高(P<0.05)。重度组血尿酸、hs-CRP、MMP-9水平及NIHSS评分显著高于轻、中度组(P<0.05)。血尿酸水平、hs-CRP、MMP-9水平与NIHSS评分呈正相关(P<0.05)。预后不良组血尿酸、hs-CRP、MMP-9水平及mRS评分较预后良好组显著升高(P<0.05)。血尿酸水平、hs-CRP、MMP-9水平与患者mRS评分呈正相关(P<0....     

早年创伤对认知功能影响的研究进展

早年创伤是一个全球普遍存在的问题,严重影响儿童、青少年的大脑发育,继而导致认知功能、人格水平、社会行为的改变。早年创伤主要是父母、监护人或其他年长者对孩子施加躯体虐待、躯体忽视、情感虐待、情感忽视或性虐待。美国一项调查显示：儿童虐待事件的发生率高达1．2％[1]。早年创伤影响认知功能的多个领域,包括学习／工作记忆、视觉空间能力、执行功能、言语智能、复杂推理搜决策、学业表现等比]。创伤造成的认知功能改变是目前国内外神经科学和精神医学领域研究的热点,但其发病机制仍不明确,鉴于早年创伤与认知功能的关系问题,现就早年创伤对大脑发育、神经认知的影响加以综述。     

Brain network markers of abnormal cerebral glucose metabolism and blood flow in Parkinson＇s disease

Neuroimaging of cerebral glucose metabolism and blood flow is ideally suited to assay widely-distributed brain circuits as a result of local molecular events and behavioral modulation in the central nervous system. With the progress in novel analytical methodology, this endeavor has succeeded in unraveling the mechanisms underlying a wide spectrum of neurodegenerative diseases. In particular, statistical brain mapping studies have made significant strides in describing the pathophysiology of Parkinson＇s disease （PD） and related disorders by providing signature biomarkers to determine the systemic abnormalities in brain function and evaluate disease progression, therapeutic responses, and clinical correlates in patients. In this article, we review the relevant clinical applications in patients in relation to healthy volunteers with a focus on the generation of unique spatial covariance patterns associated with the motor and cognitive symptoms underlying PD. These characteristic biomarkers can be potentially used not only to improve patient recruitment but also to predict outcomes in clinical trials.     

Differential cognitive responses to guqin music and piano music in Chinese subjects： an event-related potential study

Objective To compare the cognitive effects of guqin （the oldest Chinese instrument） music and piano music. Methods Behavioral and event-related potential （ERP） data in a standard two-stimulus auditory oddball task were recorded and analyzed. Results This study replicated the previous results of culture-familiar music effect on Chinese subjects： the greater P300 amplitude in frontal areas in a culture-familiar music environment. At the same time, the difference between guqin music and piano music was observed in NI and later positive complex （LPC： including P300 and P500）： a relatively higher participation of right anterior-temporal areas in Chinese subjects. Conclusion The results suggest that the special features of ERP responses to guqin music are the outcome of Chinese tonal language environments given the similarity between Guqin＇s tones and Mandarin lexical tones.     

Naoxintong dose effects on inflammatory factor expression in the rat brain following focal cerebral ischemia

BACKGROUND： Certain components of tetramethylpyrazine, a traditional Chinese medicine, exhibit protective effects against brain injury. OBJECTIVE： To investigate the effects of different Naoxintong doses on expression of nuclear factor-kappa B （ kB）, interleukin-6, tumor necrosis factor-α, and complement 3 in rats following focal cerebral ischemia. DESIGN, TIME AND SETTING： The randomized experiment was performed at the Laboratory of Neurology, Second Hospital of Hebei Medical University from June 2004 to June 2006. MATERIALS： A total of 150 adult, healthy, male, Sprague Dawley rats, weighing 280-320g, were selected. Naoxintong powder （mainly comprising szechwan lovage rhizome, milkvetch root, danshen root, and radix angelicae sinensis） was obtained from Buchang Pharmacy Co., Ltd. in Xianyang City of Shanxi Province of China, lot number 040608. METHODS： The rats were randomly assigned into sham operation, saline, high-dose Naoxintong, moderate-dose Naoxintong, and low-dose Naoxintong groups, with 30 rats in each group. Rat models of middle cerebral artery occlusion were established using the suture method, with the exception of the sham operation group. Rats in the high-dose, moderate-dose and low-dose Naoxintong groups received 4, 2, and 1 g/kg Naoxintong respectively, by gavage. Rats in the saline group were treated with 1 mL saline by gavage All rats were administered by gavage at 5 and 23 hours following surgery, and subsequently, once per day. MAIN OUTCOME MEASURES： At 6, 24, 48, 72 hours, and 7 days following model establishment, brain water content was measured. Histopathological changes in brain tissues were detected using hematoxylin-eosin staining. Expression of nuclear factor- kB, interleukin-6, tumor necrosis factor- α, and complement 3 was examined by immunohistochemistry. RESULTS： A total of 150 rats were included in the final analysis with no loss. Brain water content was significantly increased in the ischemic hemisphere of rats from the saline, as well as the high-dose, mo     

Effect of Ganoderma lucidum spore on expression of insulin-like growth factor-1, nuclear factor-kappa B, and neuronal apoptosis in the epileptic rat brain*★

BACKGROUND：It has been reported that Ganoderma lucidum spore powder, a very well known Chinese traditional medicine, can affect immunoregulation, free radical scavenging, and anti-hypoxia responses. OBJECTIVE： To investigate the effect of Ganoderma lucidum spore powder on expression of insulin-like growth factor-1 （IGF-1）, nuclear factor-κB （NF-κB） and neuronal apoptosis in rats with pentylenetetrazol （PTZ）-induced epilepsy. DESIGN, TIME AND SETTING： A cellular and molecular biology experiment with randomized controlled study design was performed at the Central Laboratory of Basic Medical College of Jiamusi University from June to August 2005. MATERIALS： Thirty healthy, adult, male, Wistar rats were selected and randomly divided into 3 groups （10 rats per group）： control, epilepsy model, and Ganoderma lucidum spore powder. A sub-eclampsia PTZ dose （35 mg/kg） was intraperitoneally injected to induce epilepsy in the latter two groups. Wild Ganoderma lucidum spore powder （30 g/L） was provided by the wild Ganoderma lucidum plant nursery at Jiamusi, China. Immunohistochemical detection and terminal deoxynucleotidyl transferase-mediate dUTP nick end-labeling （TUNEL） kits were purchased from Wuhan Boster Biological Technology Co., Ltd., China. METHODS： Ganoderma lucidum spore powder was intragastrically administered at a dose of 10.0 mL/kg, once a day for 28 days. In the epilepsy and control groups, an equivalent volume of normal saline was intragastrically administered. MAIN OUTCOME MEASURES： Immunoreactivity for IGF-1 and NF-κB/P65 were detected by immunohistochemical staining. Neuronal apoptosis was detected using TUNEL methods. RESULTS： The hippocampus and cerebral cortex of rats with PTZ-induced epilepsy exhibited a higher number of apoptotic cells at high magnification （×400）, compared with the control group. Expression of IGF-1 and NF-κB were higher in the epilepsy group, compared with the control group （P 〈 0.01）. In Ganoderma lucidum spore-treated rats,     

Chaotic electrical stimulation of the subthalamic nucleus – mossy fiber sprouting, epileptic seizures, and brain electrical activity in pentylenetetrazol-kindled rats★

BACKGROUND： Previous studies have demonstrated that appropriate interventions can alter brain electrical activity of epileptic patients prior to and during a seizure, leading to maintenance of a highly chaotic state, thereby inhibiting abnormal epileptic discharges, and eventually controlling epileptic seizure. OBJECTIVE： This study was designed to observe the effects of chaotic electrical stimulation to the subthalamic nucleus on mossy fiber sprouting, epileptic seizures, and electrical discharges, and to summarize the most suitable intervention. DESIGN, TIME AND SETTING： This randomized grouping, neuroelectrophysiological study was performed at the Laboratory of Neurology, Union Hospital Affiliated to Fujian Medical University in September 2007. MATERIALS： Fifty-five healthy, male, Sprague Dawley rats were subjected to an epileptic model by an intraperitoneal injection of pentylenetetrazol. The YC-2 programmed electrical stimulator was provided by Chengdu Instrument Factory, China; the video electroencephalographic system （KT-88-2400） and 24-hour active electroencephalographic system were products of Contec Medical System Co., Ltd., China; pentylenetetrazol was purchased from Sigma, USA. METHODS： The present interventional method consisted of electrical stimulation to the subthalamic nucleus with an intensity of 500 μA, pulse width 0.05 ms, frequency 30 Hz, and a duration of 20 minutes for 14 successive days. Fifty-five rats were divided into 6 groups： （1） pre-stimulation （n = 10）, pentylenetetrazol was administered and 30 minutes later, chaotic electrical stimulation was performed; （2） synchronous stimulation （n = 10）, rats received pentylenetetrazol and chaotic electrical stimulation concurrently; （3） post-administration stimulation （n = 10）, after pentylenetetrazol administration, chaotic electrical stimulation was performed immediately after cessation of a seizure; （4） sham-stimulation （n = 10）, following pentylenetetrazol administration, an electrode was con     

Effect of bilobalide B on cholinergic hippocampal neurons exposed to cholesterol and apolipoprotein E4*☆

BACKGROUND： Extracts of ginkgo biloba leaves have been reported to improve nerve function and activity in Alzheimer＇s disease, which is associated with reduced secretion of cholinergic neurotransmitter in hippocampal neurons. OBJECTIVE： To validate the protective effect of bilobalide B against in vitro injury of cholinergic neurons of the hippocampus induced by combined cholesterol and apoE4 DESIGN, TIME AND SETTING： This randomized, controlled animal experiment was performed in the Pathology Laboratory, Tianjin University of Traditional Chinese Medicine from July 2003 to July 2006. MATERIALS： Neonatal Wistar rats, 1-day-old, both male and female, and mean body mass of 5 g were selected for this study. Cholesterol and apolipoprotein E4 （apoE4） were purchased from Sigma Company （USA）, bilobalide B was purchased from Tianjin Zhongyi Pharmaceutical Factory, batch number 20050312. METHODS： Hippocampal neurons were divided into three groups： a normal control group （routinely added media）, a model group （exposed to media containing 40 mg/L cholesterol and 30 mg/L apoE4 for 24 hours） and a bilobalide B group （exposed to media containing 160 mg/L bilobalide B for 16 hours, and then with addition of 40 mg/L cholesterol and 30 mg/L apoE4 for an additional 24 hours）. MAIN OUTCOME MEASURES： Levels of acetylcholine （ACh） and activity of acetylcholinesterase （ACHE） and choline acetyltransferase （CHAT） in hippocampal neurons were determined by microdosage hydroxylamine colorimetry, hydroxylamine colorimetry and radiological chemistry, respectively. RESULTS： The ACh level was significantly lower in the model group than that in the normal control group （P 〈 0.01）, while it was markedly higher in the bilobalide B group than in the model group （P 〈 0.05）. Activity of AChE was significantly decreased in the model group compared with the normal control group （P 〈 0.05）. However, there was no significant difference between the model group and the bilobalide B group ?     

氧化应激与认知功能障碍的研究进展

氧化应激（Oxidative Stress）不仅在糖尿病、高血压病等身心疾病中起着重要作用,而且对阿尔茨海默病（AlzheimerDisease,AD）、帕金森病（Parkin-son Disease,PD）等神经精神障碍的认知功能也有一定影响。强烈或持续性的氧化应激可通过诱导细胞凋亡和炎性反应导致细胞、组织损害。流行病学及动物研究均表明,母孕期遭受应激可能会影响胎儿的神经心理发育过程,造成胎儿大脑某区域的缺陷,引起持续性认知改变、神经内分泌和行为反应,增加后代精神疾病的患病风险。现对氧化应激与认知功能障碍的机制进行综述。     

Intrathecal MK-801 inhibits formalin-induced activation of spinal p38-MAPK in rats**★

BACKGROUND： p38 mitogen-activated protein kinase （MAPK） plays an instrumental role in signal transduction from the cell surface to the nucleus, while subcutaneous injection of formalin can induce increased activation of spinal p38 MAPK. However, the mechanisms underlying the formalin-induced activation of spinal p38 MAPK in rats are unclear. OBJECTIVE： To observe the effects of N-methyl-D-aspartic acid （NMDA） receptor antagonist MK-801 on the formalin-induced activation of spinal p38 MAPK in rats. DESIGN, TIME AND SETTING： This randomized grouping, controlled animal experiment was performed at the Department of Physiology and Neurobiology, Shanxi Medical University between May and November 2007. MATERIALS： Forty eight healthy, adult Wistar rats were randomly divided into two groups： formalin ＋ normal saline （n = 12） and formalin ＋ MK-801 （n = 36）. The formalin ＋ MK-801 group was further divided into three subgroups according to the dosage of MK-801 （10, 50, and 100 nmol/L, 12 rats for each subgroup） METHODS： Following anesthesia, polyethylene tubing filled with sterile normal saline was implanted into the subarachnoid cavity. On postoperative days 5-8, rats received a 15 minute perfusion of normal saline or MK-801 （10, 50, and 100 nmol/L） in the formalin ＋ normal saline and formalin ＋ MK-801 groups, respectively, followed by formalin injection for the induction of nociceptive behavior. MAIN OUTCOME MEASURES： Detection of total p38 MAPK and of phosphorylated p38 MAPK by western Blot analysis; observation of nociceptive behaviors in the 1 hour after formalin injection. RESULTS： Western Blot analysis revealed that injection of formalin had no effect on total p38 MAPK expression but resulted in increased phosphorylation of p38 MAPK in the spinal cord. This increase was apparent after 5 minutes, peaked at 20 minutes, and thereafter descended and reached control levels after 45 minutes. Pretreatment with MK-801 （10, 50, 100 nmol/L） resulted in a dose-dependent reduc     

Changes of 5-hydroxytryptamine and tryptophan hydroxylase expression in the ventral horn of spinal cord

Objective To investigate changes of 5-hydroxytryptamine （5-HT） and its synthesis rate-limiting enzyme tryp-tophan hydroxylase （TPH） in the ventral horn of spinal cord after exercise-induced fatigue, and to further discuss the mecha- nism of exercise-induced central fatigue at spinal level. Methods Sixteen healthy adult Wistar rats were randomly divided into 2 groups： exercise-induced fatigue group and control group. Immunohistochemical staining for 5-HT and TPH in the ventral horn were performed and analysized quantitatively. The mean optic densities of 5-HT and TPH positive fibers or terminals were measured by computerized image analyzer. Results Both 5-HT and TPH positive fibers/terminals decreased in the exercise-induced fatigue group. The immunohistochemical staining was weaker and the mean optic densities decreased obviously in the fatigue group compared with those in the control group （P 〈 0.05）. Conclusion 5-HT and TPH in the ventral horn of spinal cord might be involved in exercise-induced fatigue.