精神分裂症患者血清蛋白因子水平与PANSS评分的相关性及其临床意义

目的:观察精神分裂症患者血清蛋白因子与PANSS评分的相关性,探讨血清蛋白因子作为生物标志物评估精神分裂症的可能性。方法:选择2015年5月-2018年7月期间我院收治的68例精神分裂症患者为观察组,根据疗效分为显著组(n=22)、有效组(n=35)、无效组(n=11),同期选择健康体检志愿者68例作为对照组。测定各组神经胶质纤维酸性蛋白(GFAP)、脑源性神经营养因子(BDNF)、神经生长因子(NGF)及钙结合蛋白(S100β)等血清蛋白因子水平,并分析观察组治疗后血清蛋白因子水平与阳性与阴性症状量表(PANSS)评分的相关性。结果:观察组治疗前血清BDNF及NGF水平显著低于对照组,而血清S100β与GFAP水平高于对照组(P0.05)。不同疗效组治疗前后BDNF、S100β、GFAP水平比较差异有统计学意义(P0.05),其中显效组的各指标水平最高;不同疗效组治疗前后S100β水平比较差异无统计学意义(P0.05);与治疗前相比,治疗后不同疗效组BDNF、NGF均降低(P0.05)。Pearson相关性分析显示,治疗后,血清BNDF水平与PANSS评分呈正相关,GFAP水平与PANSS评分呈负相关(P0.05),血清NGF、S100β水平与PANSS评分无相关性(P0.05)。结论:精神分裂症患者在患病早期即存在神经营养不良及神经损伤,血清蛋白因子GFAP、BDNF或可作为辅助评价精神分裂症患者的潜在生物标志物。     

血清NGF、BDNF、GFAP水平与老年血管性痴呆严重程度的相关性分析

目的:探讨血清神经生长因子(Nerve Growth Factor,NGF)、脑源性神经营养因子(Brain Derived Neural Nutrition Factor, BDNF)、胶质纤维酸性蛋白(Glial Fibrillary Acidic Protein,GFAP)水平与老年血管性痴呆严重程度的相关性。方法:选择我院2016年1月至2018年12月收治的81例老年血管性痴呆患者,根据简易精神状态检查表(MMES)评分将其分为三组,以MMSE评分21～26分者为轻度组(26例),10～20分者为中度组(28例),0～9分者为重度组(27例),同时选择来院体检的50例健康者作为对照组,检测和比较各组的血清NGF、BDNF、GFAP水平,分析血清NGF、BDNF、GFAP水平与老年血管性痴呆患者MMSE分值的相关性。结果:老年血管性痴呆者的血清NGF、GFAP水平明显高于对照组(P0.05),血清BDNF水平明显低于对照组(P0.05)。轻度组、中度组、重度组的血清NGF、GFAP、BDNF水平对比差异均有统计学意义(P0.05):NGF水平:轻度组中度组重度组,BDNF水平:轻度组中度组重度组;GFAP水平:轻度组中度组重度组。血清NGF、BDNF水平与MMSE分值评分呈显著正相关(r_1=0.652,r_2=0.671,P0.05),血清GFAP水平与MMSE分值呈显著负相关(r3=-0.681,P0.05)。结论:血清NGF、BDNF、GFAP水平均与老年血管性痴呆的严重程度密切相关,可能用于评估老年血管性痴呆病情的严重程度。     

盐酸美金刚联合银杏叶提取物对阿尔茨海默病患者血清BDNF、NGF、DA水平和认知功能的影响

目的:探讨盐酸美金刚联合银杏叶提取物对阿尔茨海默病患者血清脑源性神经营养因子(BDNF)、神经营养因子(NGF)浓度、多巴胺(DA)水平和认知功能的影响。方法:将我院2017年6月至2018年7月收治的92例阿尔茨海默病患者按随机数字表法分为对照组49例和研究组43例,对照组采用盐酸美金刚治疗,研究组在对照组基础上联合银杏叶提取物治疗。比较两组临床疗效,治疗前后血清BDNF、NGF、DA水平、认知功能、简易精神状态检查量表(MMSE)、日常生活能力(ADL)评分的变化和不良反应的发生情况。结果:治疗后,研究组总有效率为90.70%,显著高于对照组(69.39%,P0.05)。治疗前,两组血清BDNF、NGF、DA水平、MMSE和ADL评分比较差异无统计学意义(P0.05);治疗后,两组以上指标均较治疗前显著上升,且研究组以上指标明显高于对照组(P0.05)。两组不良反应总发生率比较差异无统计学意义(P0.05)。结论:盐酸美金刚联合银杏叶提取物可提高阿尔茨海默病的疗效,改善患者认知功能,可能与增加BDNF、NGF、DA的表达有关。     

培元还五汤联合针灸治疗缺血性脑卒中恢复期患者的疗效及对血清细胞因子和睡眠质量的影响

目的:探讨培元还五汤联合针灸治疗缺血性脑卒中恢复期患者的疗效及对血清细胞因子和睡眠质量的影响。方法:选取北京王府中西医结合医院于2017年1月～2018年12月间接收的99例缺血性脑卒中恢复期患者,根据数表法将患者随机分为对照组(n=49,给予基础治疗和常规康复训练)和研究组(n=50,在对照组基础上给予培元还五汤联合针灸治疗),比较两组患者临床疗效、神经功能缺损情况、上肢运动功能、睡眠质量以及血清超敏C-反应蛋白(hs-CRP)、妊娠相关蛋白A(PAPP-A)、神经生长因子(NGF)、脑源性神经营养因子(BDNF)水平变化,记录两组治疗期间不良反应发生情况。结果:研究组治疗后临床总有效率为92.00%(46/50),显著高于对照组患者的71.43%(35/49)(P0.05)。两组患者治疗2个月后神经功能缺损(NIHSS)评分、睡眠质量评分降低,且研究组低于对照组(P0.05),Fugl-Meyer运动(FMA)评分则升高,且研究组高于对照组(P0.05)。两组患者治疗2个月后血清hs-CRP、PAPP-A水平降低,且研究组低于对照组(P0.05),血清NGF、BDNF水平则升高,且研究组高于对照组(P0.05)。两组不良反应发生率比较无差异(P0.05)。结论:培元还五汤联合针灸治疗缺血性脑卒中恢复期患者,疗效确切,可有效改善患者神经功能、上肢运动功能、睡眠质量,改善相关细胞因子水平,且不增加不良反应发生率,具有一定的临床应用价值。     

神经生长因子治疗急性颅脑损伤的效果及对患者神经功能的影响

目的:研究神经生长因子在急性颅脑损伤中的治疗效果及对神经功能的影响。方法:选取2014年8月至2015年7月本院收治的82例急性颅脑损伤患者,随机分为观察组和对照组,每组41例。对照组采取常规对症治疗,观察组在对照组基础上采用神经生长因子治疗。观察并比较两组患者治疗前后血清S100β,白介素-6(IL-6),髓鞘碱性蛋白(MBP)及神经元特异性烯醇化酶(NSE)水平的变化情况以及临床疗效。结果:观察组总有效率高于对照组,差异具有统计学意义(P0.05)。与治疗前比较,两组患者治疗后血清S100β及IL-6水平均降低,差异具有统计学意义(P0.05);与对照组比较,观察组患者治疗后血清S100β及IL-6水平较低,差异具有统计学意义(P0.05);与治疗前比较,两组患者治疗后血清MBP及NSE水平均降低,差异具有统计学意义(P0.05);与对照组比较,观察组患者治疗后血清MBP及NSE水平较低,差异具有统计学意义(P0.05)。结论:神经生长因子治疗急性颅脑损伤的效果显著,能够改善患者免疫功能和神经功能,值得临床推广应用。     

rt-PA静脉溶栓治疗急性大脑中动脉脑梗死的临床疗效

目的:探讨rt-PA静脉溶栓治疗在急性大脑中动脉脑梗死的临床疗效及安全性。方法:选取我院急性大脑中动脉脑梗死患者70例,随机分为实验组和对照组,每组35例。对照组给予保护神经、清除自由基及抗血小板抑制等治疗,实验组在对照组基础上联合阿替普酶静脉滴注。观察并比较治疗前后两组患者血清BNP,CRP及NSE水平的变化情况,以及临床疗效和并发症的发生率。结果:与治疗前相比,治疗后两组患者血清BNP,CRP及NSE水平均降低,差异具有统计学意义(P0.05);与对照组比较,实验组患者治疗后血清BNP,CRP及NSE水平较低,差异具有统计学意义(P0.05);实验组总有效率(85.71%)明显高于对照组(65.71%),差异具有统计学意义(P0.05)。两组患者颅内出血、再灌注损伤、血管再闭塞等并发症的发生率比较,差异无统计学意义(P0.05)。结论:rt-PA静脉溶栓治疗急性大脑中动脉脑梗死的临床疗效显著,能够降低患者血清BNP,CRP及NSE水平。     

微波治疗对痔瘘术后患者预后及血清NGF、PGE2、NPY水平的影响

目的:探讨微波治疗对痔瘘术后患者的预后及血清神经生长因子(NGF)、前列腺素E2(PGE2)、神经肽Y(NPY)水平的影响。方法:选择我院2016年6月至2018年7月接诊的120例痔瘘术后患者,通过随机数表法分为对照组和观察组,每组60例。对照组给予常规治疗,观察组患者给予微波治疗。两组患者均连续治疗1周。比较两组治疗前后T淋巴细胞亚群、凝血功能、血清炎症因子、NGF、PGE2、NPY水平的变化情况、预后及并发症的发生情况。结果:治疗后,观察组CD_3~+、CD_8~+均高于对照组,CD_4~+/CD_8~+低于对照组(P0.05);观察组凝血酶原时间(PT)、活化部分凝血活酶时间(APTT)均长于对照组,纤维蛋白原(FIB)低于对照组(P0.05);观察组血清CRP、TNF-α和PCT水平均明显优于对照组(P0.05),血清NGF、PGE2、NPY水平均低于对照组(P0.05);观察组患者治疗后第3天和5天肛门水肿评分和创面愈合时间均少于对照组,创面愈合率高于对照组(P0.05);观察组术后并发症的总发生率明显低于对照组(P0.05)。结论:微波治疗痔瘘术后患者能有效改善患者免疫功能,减轻炎症反应,降低血清NGF、PGE2、NPY水平,有利于促进患者恢复,且安全性高。     

玻璃酸钠注射液联合中药熏蒸治疗膝关节骨性关节炎的临床效果及 对患者血清TNF-α水平的影响

目的:探讨玻璃酸钠注射液联合中药熏蒸对膝关节骨性关节炎患者血清TNF-α水平的影响及其临床疗效。方法:选取我院膝关节骨性关节炎患者70例,随机分为实验组和对照组,每组35例。对照组给予玻璃酸钠注射液;实验组在对照组治疗基础上联合中药熏蒸治疗。比较治疗前后两组患者血清TNF-α、IL-1β水平及临床疗效。结果:实验组总有效率(88.57%)高于对照组(71.43%),差异具有统计学意义(P0.05)。与治疗前相比,两组患者治疗后血清TNF-α、IL-1β水平均降低,且实验组低于对照组,差异具有统计学意义(P0.05);与治疗前相比,两组患者治疗后膝关节功能评分、ROM均升高,而VAS评分均降低,差异具有统计学意义(P0.05);与对照组比较,实验组患者治疗后膝关节功能评分、ROM较高,而VAS评分较低,差异具有统计学意义(P0.05)。结论:玻璃酸钠注射液联合中药熏蒸对膝关节骨性关节炎患者有较好的临床疗效,推测其机制与TNF-α、IL-1β水平降低有关。     

头孢曲松治疗急性胰腺炎的临床效果及对患者血清炎症因子的影响

目的:探讨头孢曲松联合质子泵抑制剂对急性胰腺炎患者血清IL-6,C反应蛋白及降钙素原的影响及及临床疗效。方法:收集我院就诊的118例急性胰腺炎患者,随机分为实验组和对照组,每组59例。对照组患者给予奥美拉唑治疗,实验组患者在对照组基础上给予头孢曲松钠治疗。观察并比较两组患者治疗前后血清C反应蛋白(CRP)、白介素-6(IL-6)、降钙素原(PCT)水平变化及临床疗效。结果:与治疗前相比,治疗后两组患者血清CRP,IL-6及PCT水平均下降,差异具有统计学意义(P0.05);与对照组相比,实验组患者CRP,IL-6及PCT水平较低,差异具有统计学意义(P0.05);与对照组相比,实验组患者临床治疗有效率较高,差异具有统计学意义(P0.05)。结论:头孢曲松联合质子泵抑制剂能够降低急性胰腺炎患者血清CRP、IL-6、PCT水平,临床疗效较好。     

缬沙坦联合通心络胶囊对糖尿病心肌病患者血清肌钙蛋白及SOD水平的影响

目的:探讨缬沙坦联合通心络胶囊对糖尿病心肌病患者血清肌钙蛋白,SOD及生活质量的影响。方法:收集我院就诊或住院治疗的60例糖尿病心肌病患者,随机分为实验组和对照组,每组30例。对照组患者给予缬沙坦口服治疗,实验组患者在此基础上给予通心络治疗。检测并比较两组患者治疗前后血清cTnI、生活质量、SOD、运动耐量的变化情况。结果:与治疗前相比,两组患者治疗后血清cTnI和生活质量评分均下降,而SOD和运动耐量水平均升高,差异具有统计学意义(P0.05);与对照组相比,实验组患者治疗后血清cTnI和生活质量评分较低,而SOD和运动耐量水平较高,差异具有统计学意义(P0.05)。结论:缬沙坦联合通心络胶囊能够降低糖尿病心肌病患者cTnI、生活质量评分,升高其SOD以及运动耐量水平,对临床具有指导意义。     

三七总皂苷对脊髓损伤后BDNF 的表达及运动功能的影响

目的:探讨三七总皂苷(total panax notoginseng saponins,tPNS)对脊髓半横断损伤后对脑源性神经营养因子(Brain-derivedneurotrophic factor,BDNF)表达以及运动功能恢复的作用的影响。方法:大鼠随机分为正常组和实验组,实验组大鼠脊髓T10右侧半横断模型,损伤后15min,腹腔注射三七总皂苷,剂量为20mg.kg-1,以后每天给药一次,溶媒对照组注射等量生理盐水。术后进行BBB评分和斜板实验检测;动物分别存活1d、3d、7d、14d、28d后,采用免疫荧光化学方法检测脊髓损伤远侧端BDNF表达的变化。结果:BBB评分及斜板实验结果显示,三七总皂苷能明显促进脊髓损伤后运动功能的恢复,尤其是损伤后7d和14d,三七总皂苷组评分明显高于溶媒对照组。免疫组化结果显示:脊髓半横断损伤后,损伤远侧端损伤侧BDNF的表达强于对侧,损伤侧BDNF的表达呈现出1d,3d逐渐增强,7d达高峰的趋势,14dBDNF的表达逐渐下降,至28d仍略高于正常组。三七总皂苷组和溶媒对照组相比,BDNF表达的时间趋势相同,但相同时间点BDNF的表达强于对照组,尤其是3d、7d。结论:三七总皂苷能增强脊髓半横断损伤后BDNF的表达,这可能是其改善脊髓再生的微环境,促进脊髓损伤后运动功能恢复的机制之一。     

Neurotrophin expressions in neural stem cells grafted acutely to transected spinal cord of adult rats linked to functional improvement

It is well known that neural stem cells (NSC) could promote the repairment after spinal cord injury, but the underlying mechanism remains to be elucidated. This study showed that the transplantation of NSC significantly improved hindlimb locomotor functions in adult rats subjected to transection of the spinal cord. Biotin dextran amine tracing together with the stimulus experiment in motor sensory area showed that little CST regeneration existed and functional synaptic formation in the injury site. Immunocytochemistry and RT-PCR demonstrated the secretion of NGF, BDNF, and NT-3 by NSC in vitro and in vivo, respectively. However, only mRNA expression of BDNF and NT-3 but not NGF in injury segment following NSC transplantation was upregulated remarkably, while caspase-3, a crucial apoptosis gene, was downregulated simultaneously. These provided us a clue that the functional recovery was correlated with the regulation of BDNF, NT-3, and caspase-3 in spinal cord transected rats following NSC transplantation.     

不同训练方法对大鼠骨折后脊髓功能恢复的影响

摘要 目的：分析不同训练方法对大鼠骨折后脊髓功能恢复的影响。方法：随机选取40只Sprague Dawley (SD)大鼠,建立骨折合并脊髓损伤模型,另取10只大鼠作为正常组。将建模成功的SD大鼠随机分为模型组、减重平板训练组、游泳训练组和转笼训练组。分别于损伤前和损伤后对大鼠的运动功能进行评测;术后35 d对大鼠的运动诱发电位（(motor evoked potentials, MEP）、脑源性神经生长因子（brain-derived neuotrophyic factor, BDNF）、神经元特异性烯醇化酶（neuron-specific enolase, NSE）和脊髓组织Cleaved Caspase-3表达量、肌纤维横截面积和直径进行评测。结果：损伤后,手术组大鼠运动功能评分均降低;经不同方式训练后,大鼠的运动功能评分均上升,14 d～35 d数据差异有统计学意义（P＜0.05）。术后35 d,与模型组相比,训练组大鼠运动诱发电位潜伏期均缩短,波幅、BDNF和NSE表达量、肌纤维横截面积和直径均增大,Cleaved Caspase-3表达量均降低,14 d～35 d数据差异有统计学意义（P＜0.05）。其中,减重平板训练组各指标检测结果最优。结论：三种训练方式均可促进大鼠骨折后脊髓功能恢复,其中减重平板训练组恢复效果＞游泳训练组＞转笼训练组。     

Rat sciatic nerve crush injury and recovery tracked by plantar test and immunohistochemistry analysis

An experimental crush injury to the sciatic nerve, with a crush force of 49.2 N (pressure p=1.98x10(8) Pa), was inflicted in 30 male rats (Wistar). A control group (sham), with the same number of rats, was also operated upon exactly as the experimental group but without the crush injury. We tested the sensory and motor recovery of the sciatic nerve with Hargreaves method, using an apparatus from Ugo Basile, Italy. Testing was continued for both legs of each rat, injured and uninjured, starting preoperatively (0 day), and then 1, 7, 14, 21, and 28 days postoperatively. The same experiment was run simultaneously with the sham group. The Plantar test showed recovery of the sensory and motor function of the sciatic nerve, though not complete recovery, by 28 days. An immunohistochemical experiment was run in parallel with the plantar test on L3-L6 segments of the spinal cord from where the sciatic nerve extends. We used antibodies for Myelin-associated glycoprotein (MAG), and gangliosides GD1a and GT1b on the aforesaid part of the spinal cord. The immunohistochemical methods showed changes in sensory and motor axons in the spinal cord segment L3-L6 which suggest correspondence with the results of the Plantar test, in terms of recovery of the sensory and motor function after injury of the sciatic nerve. The immunohistochemical results also show ipsilateral and contralateral changes following injury. Results of the plantar test are suggestive that the rat shows compensation for an injury in its contralateral leg.     

Knockdown of α-synuclein in cerebral cortex improves neural behavior associated with apoptotic inhibition and neurotrophin expression in spinal cord transected rats

Spinal cord injury (SCI) often causes severe functional impairment with poor recovery. The treatment, however, is far from satisfaction, and the mechanisms remain unclear. By using proteomics and western blot, we found spinal cord transection (SCT) resulted in a significant down-regulation of α-synuclein (SNCA) in the motor cortex of SCT rats at 3 days post-operation. In order to detect the role of SNCA, we used SNCA-ORF/shRNA lentivirus to upregulate or knockdown SNCA expression. In vivo, SNCA-shRNA lentivirus injection into the cerebral cortex motor area not only inhibited SNCA expression, but also significantly enhanced neurons’ survival, and attenuated neuronal apoptosis, as well as promoted motor and sensory function recovery in hind limbs. While, overexpression SNCA exhibited the opposite effects. In vitro, cortical neurons transfected with SNCA-shRNA lentivirus gave rise to an optimal neuronal survival and neurite outgrowth, while it was accompanied by reverse efficiency in SNCA-ORF group. In molecular level, SNCA silence induced the upregulation of Bcl-2 and the downregulation of Bax, and the expression of NGF, BDNF and NT3 was substantially upregulated in cortical neurons. Together, endogenous SNCA play a crucial role in motor and sensory function regulation, in which, the underlying mechanism may be linked to the regulation of apoptosis associated with apoptotic gene (Bax, Bcl2) and neurotrophic factors expression (NGF, BDNF and NT3). These finds provide novel insights to understand the role of SNCA in cerebral cortex after SCT, and it may be as a novel treatment target for SCI repair in future clinic trials.     

神经生长因子对兔坐骨神经损伤后脊髓前角运动神经元乙酰胆碱酯酶的影响

钳夹损伤兔右坐骨神经,于损伤处注射蛇毒ＮＧＦ４００Ｂｕ／ｋｇ／日,损伤术后１,３,７天和２,３,４,６,８周动态观察脊髓腰段伤侧第Ⅸ板层外侧群的大型运动神经元的ＡＣｈＥ活性改变。结果表明术后１,３天实验组（指损伤给药组）和对照组（指损伤对照组）ＡＣｈＥ活性均下降（Ｐ＞００５）;术后１,２,３周对照组ＡＣｈＥ活性明显下降,而实验组ＡＣｈＥ活性逐渐趋于恢复（Ｐ＜００１）;术后６周实验组ＡＣｈＥ活性恢复至正常水平（Ｐ＜００１）。本研究显示蛇毒ＮＧＦ对坐骨神经损伤后脊髓前角运动神经元ＡＣｈＥ活性恢复有促进作用,从而对运动神经元可起一定的保护作用和促进恢复的作用     

Peripherally-derived BDNF promotes regeneration of ascending sensory neurons after spinal cord injury

Background

The blood brain barrier (BBB) and truncated trkB receptor on astrocytes prevent the penetration of brain derived neurotrophic factor (BDNF) applied into the peripheral (PNS) and central nervous system (CNS) thus restrict its application in the treatment of nervous diseases. As BDNF is anterogradely transported by axons, we propose that peripherally derived and/or applied BDNF may act on the regeneration of central axons of ascending sensory neurons.

Methodology/Principal Findings

The present study aimed to test the hypothesis by using conditioning lesion of the sciatic nerve as a model to increase the expression of endogenous BDNF in sensory neurons and by injecting exogenous BDNF into the peripheral nerve or tissues. Here we showed that most of regenerating sensory neurons expressed BDNF and p-CREB but not p75NTR. Conditioning-lesion induced regeneration of ascending sensory neuron and the increase in the number of p-Erk positive and GAP-43 positive neurons was blocked by the injection of the BDNF antiserum in the periphery. Enhanced neurite outgrowth of dorsal root ganglia (DRG) neurons in vitro by conditioning lesion was also inhibited by the neutralization with the BDNF antiserum. The delivery of exogenous BDNF into the sciatic nerve or the footpad significantly increased the number of regenerating DRG neurons and regenerating sensory axons in the injured spinal cord. In a contusion injury model, an injection of BDNF into the footpad promoted recovery of motor functions.

Conclusions/Significance

Our data suggest that endogenous BDNF in DRG and spinal cord is required for the enhanced regeneration of ascending sensory neurons after conditioning lesion of sciatic nerve and peripherally applied BDNF may have therapeutic effects on the spinal cord injury.     

脐带间充质干细胞移植治疗脊髓损伤的临床研究

目的:探讨脐带间充质干细胞移植治疗脊髓损伤的疗效及安全性。方法:40例脊髓损伤患者给予脐带间充质干细胞移植治疗,移植方法采用静脉输注联合腰穿鞘内注射的方法。术后随访1年余定期观察患者临床症状及各项指标的变化并进行综合分析。移植过程中为促进干细胞的生长和分化,根据患者病情及身体状况给予相应的康复功能锻炼。结果:与入院时比较,脐带间充质干细胞移植治疗3、6、12个月后,不完全性脊髓损伤患者针刺觉评分、轻触觉评分、运动评分均有明显改善(P<0.05或0.01),完全性脊髓损伤患者针刺觉评分、轻触觉评分、运动评分均无明显变化(P>0.05),两组残损分级均无明显改善(P>0.05)。移植后各项生化指标正常,未出现严重的并发症和明显的不良反应。结论:脐带间充质干细胞移植治疗脊髓损伤近期疗效明显,可以改善患者的临床症状,提高患者的生存质量,是一种值得借鉴的治疗方法。     

大鼠脊髓损伤的弱激光治疗参数选择

弱激光在周围神经损伤治疗中取得了理想效果,但在脊髓损伤修复方面的研究很少.本实验应用Allen＇s造模法构建大鼠急性脊髓损伤模型,通过测量穿透功率及组织温度变化筛选出用于脊髓损伤治疗的弱激光照射参数,照射组按照筛选出的参数连续治疗14 d,于术后1、3、7、14、21 d应用BBB评分法评价大鼠后肢运动功能的恢复情况,苏木精-伊红染色（HE染色）观察脊髓病理变化并测量空洞面积.结果显示应用筛选出的照射参数（810 nm、光斑面积0.2 cm2、500 mW/cm2、510 J/cm2）连续照射14 d,术后21 d照射组的运动功能评分显著高于未照射组（P＜0.05）,术后7、14、21d照射组脊髓空洞面积显著小于未照射组（P＜0.05）.结果表明810 nm、光斑面积0.2 cm2、500 mW/cm2、510 J/cm2的弱激光照射能促进急性脊髓损伤大鼠后期运动功能的恢复.     

米诺环素对不完全脊髓损伤大鼠脊髓BDNF和NT-3表达的影响

目的观察腹腔注射米诺环素对改良Allen’s法造成的不完全脊髓损伤大鼠脊髓中脑源性神经营养因子以及神经营养因子3表达的影响,探讨米诺环素治疗脊髓损伤的作用机制。方法成年雌性Sprague-Dawley(SD)大鼠54只,改良Allen’s法造成不完全脊髓损伤,根据实验需要可以分为3组,空白组,只打开脊柱椎板,不损伤;治疗组,大鼠脊髓损伤,并腹腔注射米诺环素;损伤组,大鼠脊髓损伤,腹腔注射等剂量的生理盐水。观察各组大鼠的后肢能力Basso-Beattie-Bresnahan评分,并于不同时段(3d、7d,14d)取大鼠脊髓T8-9段采用逆转录PCR,以及免疫化学组织染色法测定脑源性神经营养因子以及神经营养因子3的表达。结果米诺环素能够明显改善不完全脊髓损伤大鼠的功能,逆转录PCR和脊髓组织冰冻切片免疫组织化学染色DAB都能证实米诺环素治疗组脑源性神经营养因子以及神经营养因子3表达显著增多。结论米诺环素在治疗不完全脊髓损伤大鼠的机制还应与其上调了大鼠体内的脑源性神经营养因子以及神经营养因子3表达有关。