Serum neuron-specific enolase:A promising biomarker of silicosis

BACKGROUND Silicosis is a type of chronic pulmonary fibrosis caused by long-term inhalation of silica dust particles.There has been no ideal biomarker for the diagnosis and differential diagnosis of silicosis until now.Studies have found that elevated neuron-specific enolase(NSE)concentration in the serum of silicosis patients is helpful for diagnosis and severity assessment of the disease.However,the number of cases in these studies was not enough to arouse attention.AIM To investigate the clinical significance of serum NSE in the diagnosis and staging of silicosis.METHODS From January 2017 to June 2019,326 cases of silicosis confirmed in Quanzhou First Hospital Affiliated to Fujian Medical University were included in the silicosis group.A total of 328 healthy individuals or medical patients without silicosis were included in the control group.Serum NSE concentrations of all subjects were determined by electrochemical luminescence.RESULTS There were no significant differences in sex,age,smoking index and complications between the silicosis and control groups.The mean serum NSE concentration was 26.57±20.95 ng/mL in the silicosis group and 12.42±2.68 ng/mL in the control group.The difference between the two groups was significant(U=15187,P=0.000).Among the 326 patients with silicosis,103 had stage I silicosis,and the mean serum NSE concentration was 15.55±6.23 ng/mL.The mean serum NSE concentration was 21.85±12.05 ng/mL in 70 patients with stage II silicosis.The mean serum NSE concentration was 36.14±25.72 ng/mL in 153 patients with stage III silicosis.Kruskal-Wallis H test suggested that the difference in serum NSE concentration in silicosis patients in the three groups was significant(H=130.196,P=0.000).Receiver operating characteristic curve analysis indicated that the area under the curve was 0.858(95%confidence interval:0.828-0.888;P=0.000).When the NSE concentration was 15.82 ng/mL,the Jorden index was the largest,the sensitivity was 72%,and the specificity was 90%.CONCLUSION Serum NSE concentration may be a promising biomarker for the diagnosis and assessment of severity of silicosis.

Electrophoretic Determination of Aqueous and Serum Neuron-specific Enolase in the Diagnosis of Retinoblastoma

Purpose: Neuron-specific enolase (NSE) of containing γ-enolase is considered valuable in the diagnosis of tumours of neuroectodermal origin.Method : We used rapid electrophoretic method on cellulose acetate plate to determine the pattern of enolase isoenzymes in 21 aqueous humor and 23 serum specimens from retinoblastoma (Rb) and 21 aqueous and 25 serum specimens from 25 control cases to evaluate NSE in the diagnosis of Rb. The assay allowed assessment of all three major isoenzymes (aa,aγ and γγ),and NSE relative activity and its percentage in the total relative activity of the three enolase isoenzymes were assessed by means of fluorometer.Result: Aqueous from all patients with Rb contained aa,ar and rr isoenzymes and presented strong postitive, the positive rate of NSE being 100% and its relative activity accounting for 45 ± 9% of the total relative activity of the 3 enolase isoenzymes; No enolase was detectable in control aqueous with cataract, glaucoma and Coats's diseases (4 cases),but in two

Neuron-specific enolase expression in a rat model of radiation-induced brain injury following vascular endothelial growth factor-modified neural stem cell transplantation

BACKGROUND： Previous studies have shown that transplantation of vascular endothelial growth factor （VEGF）-modified neural stem cells （NSC） provides better outcomes, compared with neural stem cells, in the treatment of brain damage. OBJECTIVE： To compare the effects of VEGF-modified NSC transplantation and NSC transplantation on radiation-induced brain injury, and to determine neuron-specific enolase （NSE） expression in the brain. DESIGN, TIME, AND SETTING： The randomized, controlled study was performed at the Linbaixin Experimental Center, Second Affiliated Hospital, Sun Yat-sen University, China from November 2007 to October 2008. MATERIALS： VEGF-modified C17.2 NSCs were supplied by Harvard Medical School, USA. Streptavidin-biotin-peroxidase-complex kit （Boster, China） and 5, 6-carboxyfluorescein diacetate succinimidyl ester （Fluka, USA） were used in this study. METHODS： A total of 84 Sprague Dawley rats were randomly assigned to a blank control group （n = 20）, model group （n = 20）, NSC group （n = 20）, and a VEGF-modified NSC group （n = 24）. Rat models of radiation-induced brain injury were established in the model, NSC, and VEGF-modified NSC groups. At 1 week following model induction, 10 pL （5 ×10^4 cells/μL） VEGF-modified NSCs or NSCs were respectively infused into the striatum and cerebral cortex of rats from the VEGF-modified NSC and NSC groups. A total of 10μL saline was injected into rats from the blank control and model groups. MAIN OUTCOME MEASURES： NSE expression in the brain was detected by immunohistochemistry following VEGF-modified NSC transplantation. RESULTS： NSE expression was significantly decreased in the brains of radiation-induced brain injury rats （P 〈 0.05）. The number of NSE-positive neurons significantly increased in the NSC and VEGF-modified NSC groups, compared with the model group （P 〈 0.05）. NSE expression significantly increased in the VEGF-modified NSC group, compared with the NSC group, at 6 weeks following transplantation （P 〈 0.05）. CONCLUSION： VEGF-modified NSC transplantation increased NSE expression in rats with radiation-induced brain injury, and the outcomes were superior to NSC transplantation.

Flunarizine and lamotrigine prophylaxis effects on neuron-specific enolase, S-100, and brain-specific creatine kinase in a fetal rat model of hypoxic-ischemic brain damage

BACKGROUND： Calcium antagonists may act as neuroprotectants, diminishing the influx of calcium ions through voltage-sensitive calcium channels. When administered prophylactically, they display neuroprotective effects against hypoxic-ischemic brain damage in newborn rats. OBJECTIVE： To investigate the neuroprotective effects of flunarizine （FNZ）, lamotrigine （LTG） and the combination of both drugs, on hypoxic-ischemic brain damage in fetal rats. DESIGN AND SETTING： This randomized, complete block design was performed at the Department of Pediatrics, Shenzhen Fourth People＇s Hospital, Guangdong Medical College. MATERIALS： Forty pregnant Wistar rats, at gestational day 20, were selected for the experiment and were randomly divided into FNZ, LTG, FNZ ＋ LTG, and model groups, with 10 rats in each group. METHODS： Rats in the FNZ, LTG, and FNZ ＋ LTG groups received intragastric injections of FNZ （0.5 mg/kg/d）, LTG （10 mg/kg/d）, and FNZ （0.5 mg/kg/d） ＋ LTG （10 mg/kg/d）, respectively. Drugs were administered once a day for 3 days prior to induction of hypoxia-ischemia. Rats in the model group were not administered any drugs. Three hours after the final administration, eight pregnant rats from each group underwent model establishment hypoxia-ischemia brain damage to the fetal rats. Cesareans were performed at 6, 12, 24, and 48 hours later; and 5 fetal rats were removed from each mother and kept warm. Two fetuses without model establishment were removed by planned cesarean at the same time and served as controls. A total of 0.3 mL serum was collected from fetal rats at 6, 12, 24, and 48 hours, respectively, following birth. MAIN OUTCOME MEASURES： Serum protein concentrations of neuron-specific enolase and S-100 were measured by ELISA. Serum concentrations of brain-specific creatine kinase were measured using an electrogenerated chemiluminescence method. RESULTS： Serum concentrations of neuron-specific enolase, S-100, and brain-specific creatine kinase were significantly higher in the hypoxic-ischemic fetal rats, compared with the non-hypoxic-ischemic group. Serum concentrations of neuron-specific enolase, S-100, and brain-specific creatine kinase were significantly less in the FNZ, LTG, and FNZ ＋ LTG groups following ischemia, compared with the model group （P 〈 0.01）. However, these values were significantly greater in the FNZ and LTG groups, compared with the FNZ ＋ LTG group, following ischemia （P 〈 0.01）. CONCLUSION： Preventive antenatal use of oral FNZ and LTG has positive neuroprotective effects on intrauterine hypoxic-ischemic brain damage. The combined effect of these two drugs is superior.

NSE BLyS APRIL在病毒性脑炎患者中的表达及与预后的相关性

目的研究神经特异性烯醇化酶(NSE)、B淋巴细胞刺激因子(BLyS)、增殖诱导配体(APRIL)在病毒性脑炎患者中的表达及与预后的相关性。方法选取2015—2023年河南科技大学第一附属医院收治的118例病毒性脑炎患者,另选取同期体检、经临床生化和脑脊髓穿刺等常规检查确认健康正常的对照组48例。比较不同病情的病毒性脑炎患者血清NSE、BLyS、APRIL水平,不同预后病毒性脑炎患者的相关资料。采用多因素Logistic分析病毒性脑炎预后不良的影响因素,并采取受试者工作特征(ROC)曲线分析血清NSE、BLyS、APRIL单独及联合检测在病毒性脑炎预后评价中的价值。结果重症组血清NSE、BLyS、APRIL水平均高于轻症组及对照组,差异有统计学意义(P<0.05)。预后良好组入院当天及治疗后血清NSE、BLyS、APRIL水平均低于预后不良组,差异有统计学意义(P<0.05)。多因素Logistic回归分析显示,年龄、总住院时间、是否进行机械通气、是否存在癫痫发作以及入院当天血清NSE、BLyS、APRIL水平与病毒性脑炎预后不良有关(OR>1,P<0.05)。ROC曲线显示,入院当天血清NSE、BLyS、APRIL联合检测预测预后不良的AUC值(0.895)高于NSE(0.801)、APRIL(0.781)、BLyS(0.776)。结论血清NSE、BLyS、APRIL在病毒性脑炎患者均呈高表达,三者联合检测可较好地预测患者预后。

血清CA125、CYFRA21-1、CEA、NSE及ALP联合检测对原发性肺癌患者骨转移的预测价值

目的探究血清糖类抗原125(CA125)、细胞角蛋白19片段抗原21-1(CYFRA21-1)、癌胚抗原(CEA)、神经元特异性烯醇化酶(NSE)及碱性磷酸酶(ALP)联合检测对原发性肺癌患者骨转移的预测价值。方法选取肺癌患者104例为观察组,并根据是否发生骨转移分为骨转移组(50例)和无骨转移组(54例)。同时选取100例肺部良性病变者为对照组。收集肺癌患者临床资料,检测所有受试者血清CA125、CYFRA21-1、CEA、NSE及ALP水平。采用受试者工作特征(ROC)曲线分析血清CA125、CYFRA21-1、CEA、NSE、ALP对肺癌患者骨转移的预测价值。采用多因素Logistic回归分析肺癌患者骨转移的影响因素。结果与对照组相比,观察组血清CA125、CYFRA21-1、CEA、NSE、ALP水平显著升高(P<0.05)。骨转移组中临床分期Ⅲ~Ⅳ期患者占比、有淋巴结转移患者占比及血清CA125、CYFRA21-1、CEA、NSE、ALP水平显著高于无骨转移组(P<0.05)。血清CA125、CYFRA21-1、CEA、NSE、ALP预测肺癌患者发生骨转移的AUC分别为0.818、0.816、0.739、0.770、0.771,5种肿瘤标志物联合检测的AUC为0.955,敏感度、特异度、AUC均显著高于各肿瘤标志物单独检测(P<0.05)。多因素Logistic回归分析显示,CA125、CYFRA21-1、CEA、NSE、ALP是影响肺癌患者发生骨转移的危险因素(P<0.05)。结论血清CA125、CYFRA21-1、CEA、NSE、ALP联合检测对原发性肺癌患者骨转移的预测具有较高的价值,联合诊断效能更高。

阿加曲班联合尤瑞克林治疗对急性缺血性脑卒中患者颅内血流速度、血清炎性因子的影响

目的观察阿加曲班联合尤瑞克林治疗对急性缺血性脑卒中(AIS)的颅内血流速度、炎性因子和神经元特异性烯醇化酶(NSE)、S100β蛋白的影响。方法选取228例AIS患者,按随机数字表法分为对照组(尤瑞克林治疗)、观察组(阿加曲班联合尤瑞克林治疗)各114例,比较两组临床疗效、美国国立卫生院神经功能缺损评分(NIHSS)评分、Rankin修订量表(mRS)评分、颅内血流速度、炎性因及NSE、S100β和不良反应。结果观察组总有效率高于对照组(P<0.05);治疗后观察组NIHSS、mRS评分及肿瘤坏死因子-α(TNF-α)、C反应蛋白(CRP)、白细胞介素-6(IL-6)、白细胞介素-8(IL-8)、NSE、S100β水平均低于对照组,颅内血流速度高于对照组(P<0.05);两组不良反应情况比较,差异无统计学意义(P>0.05)结论阿加曲班联合尤瑞克林可改善AIS神经功能、颅内血流速度,降低炎性因子和NSE、S100β,安全性较高。

Choice of serum tumor markers in patients with small cell lung cancer:progastrin-releasing peptide,neuron-specific enolase,and carcinoembryonic antigen

Lung cancer is a leading cause of cancer-related deaths worldwide.It mainly consists of 2 histological types:small cell lung cancer(SCLC)and non-small cell lung cancer(NSCLC,including squamous cell carcinoma and adenocarcinoma).The present study aimed to assess the role of serum progastrin-releasing peptide(ProGRP),neuron-specific enolase(NSE),and carcinoembryonic antigen(CEA)and their combinations in the histological diagnosis of lung cancer(specially SCLC),which is of great importance for the initiation of treatment and prognostic implications.Serum ProGRP,NSE,and CEA were determined by the electrochemiluminescence immunoassay(ECLIA)in 66 patients with SCLC,73 with adenocarcinoma,44 with squamous cell carcinoma,45 with non-malignant pulmonary diseases,and 50 healthy controls.Receiver operating characteristic curves were constructed to compare the predictive ability of each biochemical marker and their combined detection models to discriminate among the patients with lung cancers of different histological groups,benign pulmonary diseases and healthy individuals.In the ECLIA detection system,ProGRP showed the sensitivity and specificity for SCLC diagnosis were 71.2%and 91.1%to 93.2%,respectively.Among the markers,the largest area under the ROCs was for ProGRP in discriminating SCLC from benign pulmonary diseases,squamous cell carcinoma and adenocarcinoma(0.815,0.859,and 0.835,respectively),which indicated that ProGRP was the most efficient marker for identifying SCLC.Besides,ProGRP and NSE exhibited almost equivalent diagnostic performance in discriminating SCLC from benign diseases.As for squamous cell carcinoma,we recommended proGRP,while for adenocarcinoma,the combination of proGRP and CEA was preferred.Remarkably,when ProGRP≤66pg/mL,CEA was of great value in diagnosing SCLC and adenocarcinoma.If CEA≤5ng/mL,the patient was at higher risk for SCLC,whereas the patient was more likely to be diagnosed with adenocarcinoma.Our study provided promising information about the diagnostic values of serum ProGRP,NSE,CEA in distinguishing SCLC from benign pulmonary diseases and NSCLC,which was of crucial clinical significance in the early diagnosis and therapy of SCLC.

胸椎旁神经阻滞复合静脉全麻对老年肺癌手术患者血清S100β、NSE水平和认知功能的影响

目的探讨胸椎旁神经阻滞复合静脉全麻对老年肺癌手术患者血清中枢脑神经蛋白(S100β)、神经元特异性烯醇化酶(NSE)水平和认知功能的影响。方法选取2022年1月至2023年5月在金华市中心医院进行肺癌根治术治疗的98例老年患者,按照随机数字表法分为观察组和对照组,每组49例,对照组采取静脉全麻,观察组采取胸椎旁神经阻滞复合静脉全麻。比较两组麻醉情况、血流动力学、血清S100β、NSE水平、认知功能和疼痛评分,以及不良反应发生情况。结果观察组患者的自主呼吸恢复时间、拔管时间短于对照组,丙泊酚、舒芬太尼用量、镇痛按压次数均少于对照组,差异均有统计学意义(t分别=2.36、2.77、3.08、3.29、9.51,P均<0.05)。在插管时(T0),观察组心率(HR)低于对照组,平均动脉压(MAP)高于对照组(t分别=-2.49、2.33,P均<0.05);在T1时,观察组HR低于对照组,MAP水平高于对照组(t分别=-8.25、4.42,P均<0.05);在切皮后30 min(T2)时,观察组HR、MAP、氧饱和度(SpO2)低于对照组(t分别=-8.60、-3.65、-2.43,P均<0.05);在术毕进入麻醉监测室15 min(T3)时,观察组HR、SpO2低于对照组,MAP高于对照组(t分别=-2.24、-2.45、4.63,P均<0.05)。术后12、24 h,观察组血清S100β和NSE水平低于对照组(t分别=-2.24、-2.32、-3.15、-2.14,P均<0.05);术后6、12、24 h,观察组简易精神状态量表(MMSE)评分高于对照组,疼痛视觉模拟(VAS)评分低于对照组,差异均有统计学意义(t分别=2.60、3.06、3.05、-8.99、-9.49、-8.99,P均<0.05)。观察组患者不良反应发生率低于对照组,差异有统计学意义(χ^(2)=4.34,P<0.05)。结论老年肺癌手术患者应用胸椎旁神经阻滞复合静脉全麻能有效稳定血流动力学指标,改善血清S100β、NSE水平,减小对认知功能的影响,镇痛效果较好且不良反应较少。

血清AFP、CEA、NSE、CYFRA211在非小细胞肺癌诊断中的应用价值分析

目的:探讨血清甲胎蛋白(alpha-fetoprotein,AFP)、癌胚抗原(carcinoembryonic antigen,CEA)、神经元特异性烯醇化酶(neuron-specific enolase,NSE)、可溶性细胞角蛋白19片段(CYFRA211)在非小细胞肺癌诊断中的应用价值。方法:收集2021年1月至2022年12月我院收治确诊的非小细胞肺癌患者80例以及肺部良性病变患者80例的临床资料实施回顾性分析。对比两组患者的血清肿瘤标志物定量检查结果、血清肿瘤标志物检查结果的阳性率。对单独使用各血清肿瘤标志物对非小细胞肺癌的诊断效能进行对比。分析以血清肿瘤标志物诊断非小细胞肺癌的独立影响因素。结果:非小细胞肺癌组患者的血清CEA、NSE、CYFRA211浓度数值均高于肺部良性病变组患者(P<0.05)。两组患者AFP阳性率比较,差异无统计学意义(P>0.05)。非小细胞肺癌组患者的CEA、NSE、CYFRA211阳性率均高于肺良性病变组患者(P<0.05)。在单独使用各血清肿瘤标志物对非小细胞肺癌进行诊断时,CEA、NSE、CYFRA211的诊断灵敏度、阴性预测值以及Kappa值均高于AFP(P<0.05)。多因素Logistic分析结果显示,CEA、NSE、CYFRA211阳性是患者以血清肿瘤标志物诊断为非小细胞肺癌的独立危险因素(P<0.05)。结论:血清CEA、NSE、CYFRA211在非小细胞肺癌诊断中具有良好的效能。

急性缺血性脑卒中患者早发型癫痫发作的危险因素分析

目的探讨急性缺血性脑卒中(CIS)患者早发型癫痫发作的危险因素,为其临床防治提供依据。方法收集2019-09—2023-09漯河市第二人民医院治疗的CIS早发型癫痫发作患者80例为观察组,随机抽取同期住院治疗80例无癫痫发作的急性缺血性脑卒中患者为对照组,比较2组患者的一般资料(性别、年龄),基础疾病(原发性高血压、糖尿病、高脂血症、冠心病),不良嗜好(吸烟、饮酒),血清电解质、同型半胱氨酸、神经元烯醇化酶水平,梗死部位(皮质、皮质下)、梗死灶数量(单发、多发)、梗死病因(心源性、非心源性)及入院时NIHSS评分。结果2组患者在梗死部位、梗死灶数量、梗死病因,血清同型半胱氨酸、神经元烯醇化酶水平及NIHSS评分等方面比较,差异均有统计学意义(P<0.05)。多因素Logistic回归分析显示,梗死部位为皮质(OR=7.924,P<0.001)、梗死病因为心源性(OR=11.763,P<0.001)、血清同型半胱氨酸(OR=4.980,P<0.001)和神经元烯醇化酶(OR=4.674,P<0.001)与CIS患者早发型癫痫发作有相关性。结论梗死部位为皮质、梗死病因为心源性、血清同型半胱氨酸和神经元烯醇化酶高水平是CIS患者早发型癫痫发作的危险因素。

血清神经元特异性烯醇化酶等指标预测肝硬化合并显性肝性脑病患者预后的价值

目的 探讨血清神经元特异性烯醇化酶(NSE)、预后营养指数(PNI)评分、肝性脑病(HE)分级、Integrated终末期肝病模型(iMELD)评分模型预测肝硬化合并显性HE患者近期(90 d)预后的价值。方法 回顾性分析470例肝硬化合并显性HE患者的临床资料,根据患者入院后90 d生存状态将患者分为存活组359例和死亡组111例。结合患者年龄、入院后24 h内血常规、凝血功能、肝肾功能电解质、血清NSE水平、HE分级,计算PNI评分、iMELD评分。采用受试者工作特征(ROC)曲线、多因素Logistic回归分析及Kaplan-Meier生存曲线评估影响肝硬化合并显性HE患者近期预后的因素。结果 死亡组血清NSE、HE分级、iMELD评分高于存活组,PNI评分低于存活组,差异有统计学意义(P<0.05)。多因素Logistic回归分析结果提示,肝硬化合并显性HE患者近期预后的独立影响因素为血清NSE、PNI评分、HE分级、iMELD评分。血清NSE、PNI评分、HE分级、iMELD评分预测肝硬化合并显性HE患者近期预后的曲线下面积(AUC)分别为0.727、0.717、0.721、0.728;血清NSE、PNI评分、iMELD评分的cut-off值分别为12.23 ng/mL、34.05 ng/mL、39.26分;四者联合预测模型的预测效能最佳,AUC达到0.919,cut-off值为0.23。Kaplan-Meier生存分析提示,血清NSE、PNI评分、HE分级和iMELD评分联合预测模型cut-off值<0.23的患者90 d生存率高于血清NSE、PNI评分、HE分级和iMELD评分联合预测模型cut-off值≥0.23的患者(Log-Rank=265.567,P<0.001)。结论 血清NSE、PNI评分、HE分级、iMELD评分对预测肝硬化合并显性HE患者的近期预后具有良好的价值,联合应用预测价值更高。

血清β_(2)-微球蛋白、神经元特异性烯醇化酶水平与急性缺血性脑卒中后认知功能障碍的关系研究

目的探讨急性缺血性脑卒中(AIS)患者的β_(2)微球蛋白(β_(2)-MG)、血清神经元特异性烯醇化酶(NSE)水平与急性缺血性脑卒中后认知功能障碍(PSCI)的相关性,分析β_(2)-MG、NSE水平对卒中后认知功能障碍的预测价值。方法100例AIS患者以是否发生认知功能障碍进行分组,将50例卒中后认知功能障碍(PSCI)患者作为PSCI组,50例卒中后无认知功能障碍(PSNCI)患者作为PSNCI组。比较两组年龄、性别、文化程度、生活史、既往史、病灶部位、病因学分类等基本资料,实验室检查结果[β_(2)-MG、NSE、超敏C反应蛋白(hs-CRP)、糖化血红蛋白(HbA1c)、尿酸(UA)、总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、同型半胱氨酸(Hcy)、体质量指数(BMI)]功能量表[美国国立卫生研究院卒中量表(NIHSS)、蒙特利尔认知评估量表(MoCA)、简易智力状态检查量表(MMSE)]差异。采用多因素Logistic回归分析PSCI的影响因素。应用受试者工作特征(ROC)曲线评价血清β_(2)-MG、NSE对缺血性脑卒中后认知功能障碍的预测价值。结果PSCI组与PSNCI组患者β_(2)-MG、NSE、HbA1c、hsCRP、糖尿病病史、MoCA评分、MMSE评分、NIHSS评分比较,差异有统计学意义(P<0.05)。Logistics回归结果显示,高β_(2)-MG、NSE水平是急性缺血性脑卒中后认知功能障碍发生的独立危险因素(P<0.05)。血清β_(2)-MG与MMSE及MoCA评分均成负相关(r=-0.254、-0.461,P<0.05);血清NSE与MMSE及MoCA评分均成负相关(r=-0.261、-0.480,P<0.05)。经ROC曲线分析显示,血清β_(2)-MG联合NSE预测PSCI的灵敏度70.00%、特异度96.00%及约登指数0.66均高于任一单项预测,差异有统计学意义(P<0.05)。β_(2)-MG、NSE预测PSCI的最佳截断值分别为8.70U/L、17.50 ng/ml。结论高水平的血清β_(2)-MG、NSE水平为急性缺血性脑卒中后认知功能障碍发生的独立危险因素,可作为预测急性缺血性脑卒中后认知功能障碍的新生特异性标志物。

经皮内固定系统对创伤性胸腰椎骨折疗效、应激反应以及血清NSE、GFAP水平的影响

目的探讨经皮内固定系统对创伤性胸腰椎骨折疗效及应激反应、血清胶质纤维酸性蛋白(glial fibrillary acidic protein,GFAP)、神经元特异性烯醇化酶(neuron specific enolase,NSE)水平的影响。方法纳入2017年2月~2019年2月该院收治的84例创伤性胸腰椎骨折患者,均采用椎弓根内固定系统治疗,按不同术式分组:40例传统入路,44例经皮内固定,分别设为对照组及观察组。比较两组的手术、随访、应激反应相关指标以及血清NSE、GFAP水平。结果与对照组比较,观察组术中出血量、下床时间、住院时间等数据显著更低(P<0.05),两组手术时间无显著差异(P>0.05);与术前比较,两组术后1周、末次随访疼痛VAS评分、Cobb角明显下降,伤椎前缘高度比明显增加,术后1周观察组VAS评分显著低于对照组(P<0.05),但两组间各时期影像指标无统计学意义(P>0.05);两组术后1 d、1周的肾上腺素、去甲肾上腺素显著高于术前,血清NSE、GFAP水平显著低于术前(P<0.05),但观察组术后1 d、1周的各项指标与对照组均有显著差异(P<0.05)。结论经皮内固定术治疗创伤性胸腰椎骨折,能获得与传统手术入路一致的效果,但前者早期疼痛更轻,能减轻术后早期应激反应以及脊髓、神经微损伤。

Use of neuron-specific enolase to predict mild brain injury in motorcycle crash patients with maxillofacial fractures: A pilot study

Purpose: Mild traumatic brain injury (TBI) is common but accurate diagnosis and its clinical consequences have been a problem. Maxillofacial trauma does have an association with TBI. Neuron-specific enolase (NSE) has been developed to evaluate neuronl damage. The objective of this study was to investigate the accuracy of NSE serum levels to detect mild brain injury of patients with sustained maxillofacial fractures during motor vehicle accidents. Methods: Blood samples were drawn from 40 healthy people (control group) and 48 trauma patients who has sustained isolated maxillofacial fractures and mild brain injury in motor vehicle accidents. Brain injuries were graded by Glasgow Coma Scale. In the trauma group, correlations between the NSE serum value and different facial fracture sites were also assessed. Results: The NSE serum level (mean ± SD, ng/ml) in the 48 patients with maxillofacial fractures and mild TBI was 13.12 ± 9.68, significantly higher than that measured in the healthy control group (7.72 ± 1.82, p < 0.001). The mean NSE serum level (ng/ml) in the lower part of the facial skeleton (15.44 with SD 15.34) was higher than that in the upper facial part (12.42 with SD 7.68);and the mean NSE level (ng/ml) in the middle-and lower part (11.97 with SD 5.63) was higher than in the middle part (7.88 with SD 2.64). Conclusion: An increase in NSE serum levels can be observed in patients sustained maxillofacial fractures and mild brain injury.

NEURON-SPECIFIC ENOLASE IN PATIENTS WITH ACUTE ISCHEMIC STROKE AND RELATED DEMENTIA

Neuron-specific enolase (NSE) levels of cerebrospinal fluid (CSF) were measured in 39 patients with ischemic stroke and 15 controls. There was a significant increase of CSF NSE in acute ischemic stroke patients as compared with the controls. The altered CSF NSE levels correlated well with the infarct size in CT scan. The CSF NSE levels were higher in 6-multiinfarct dementia (MID) patients who were diagnosed after 6-month follow-up than those in 22 non-MID patients of this series. Our research supports the view that CSF NSE can be a useful biochemical marker for brain ischemia. The importance of CSF NSE in the study of dementia related to ischemic stroke is worth further studies.

Changes of hs-CRP, S100B and NSE levels in serum and cerebrospinal fluid of children with epilepsy and their correlation with the nerve cell apoptosis

Objective:To study the changes of hs-CRP, S100B and NSE levels in serum and cerebrospinal fluid of children with epilepsy and their correlation with the nerve cell apoptosis.Methods:The children who were diagnosed with epilepsy in this hospital between March 2015 and February 2017 were selected as epilepsy group, and the children who underwent operation due to hernia during the same period were selected as control group. The cerebrospinal fluid was collected to determine the contents of hs-CRP, S100B and NSE, and the serum was collected to detect the contents of hs-CRP, S100B, NSE, apoptosis molecules and Sirtuins family molecules.Results: hs-CRP, S100B and NSE levels in serum and cerebrospinal fluid of epilepsy group were significantly higher than those of control group, Bim, Bax, Caspase-3, Caspase-4 and Caspase-9 levels in cerebrospinal fluid were significantly higher than those of control group, and XIAP, Bcl-2, SIRT1, SIRT2, SIRT3, SIRT4, SIRT5, SIRT6 and SIRT7 levels in cerebrospinal fluid were significantly lower than those of control group;hs-CRP, S100B and NSE levels in serum and cerebrospinal fluid of children with epilepsy were positively correlated with Bim, Bax, Caspase-3, Caspase-4 and Caspase-9 levels in cerebrospinal fluid, and negatively correlated with XIAP, Bcl-2, SIRT1, SIRT2, SIRT3, SIRT4, SIRT5, SIRT6 and SIRT7 levels in cerebrospinal fluid.Conclusion: The abnormally elevated hs-CRP, S100B and NSE in serum and cerebrospinal fluid of children with epilepsy are closely related to the excessive apoptosis of nerve cells.

血清NSE,NF-L,s100β与急性脑梗死患者神经功能缺损程度的关系研究

目的探讨分析血清神经元特异性烯醇化醇(NSE),神经丝蛋白L(NF-L),s100β蛋白(s100β)水平与急性脑梗死患者神经功能缺损程度的相关性。方法选取2017年2月-2019年10月到商丘市第一人民医院治疗的急性脑梗死患者135例为研究组,选取同时期入医院进行健康体检者122例为对照组,检测并对比2组血清中NSE,NF-L,s100β水平;神经功能缺损程度采用神经功能缺损(NIH Stroke Scale,NIHSS)量表评定,对比研究组中不同神经功能缺损程度的患者血清中NSE,NF-L,s100β水平;采用Pearson相关性分析法探讨研究组血清NSE,NF-L,s100β水平与急性脑梗死患者NIHSS评分的相关性。结果研究组患者血清NSE,NF-L,s100β水平高于对照组,差异均有统计学意义(P<0.05);研究组中度缺损组和重度缺损组血清NSE,NF-L,s100β水平高于轻度缺损伤组,且重度损伤组血清NSE,NF-L,s100β水平高于中度损伤组,差异均有统计学意义(P<0.05);血清NSE,NF-L,s100β水平与NIHSS评分呈正相关(r=0.909、0.823、0.730,P=0.000、0.000、0.000)。结论急性脑梗死患者血清NSE,NF-L,s100β水平存在异常变化,且血清NSE,NF-L,s100β水平与NIHSS评分呈显著正相关。

Correlation study of serum Lp-PLA2 and NSE levels with nerve injury degree and lipid metabolism change in patients with acute cerebral infarction

Objective:To study the correlation of serum Lp-PLA2 and NSE levels with nerve injury degree and lipid metabolism change in patients with acute cerebral infarction.Methods: Patients diagnosed with acute cerebral infarction in our hospital between March 2014 and October 2016 were selected as the cerebral infarction group of the study, and healthy subjects receiving physical examination during the same period were selected as control group. Serum was collected to determine the levels of Lp-PLA2 and NSE as well as the content of nerve injury molecules and lipid metabolism molecules.Results:Serum Lp-PLA2, NSE, NO, MDA, LPO, 8-OHdG, ox-LDL, LDL-C and ApoB levels of cerebral infarction group were significantly higher than those of control group while HDL-C and ApoA1 content were significantly lower than those of control group;serum NO, MDA, LPO and 8-OHdG content of patients with NSE>Q3 were significantly higher than those of patients with<Q1, Q1-Q2 and Q2-Q3, serum NO, MDA, LPO and 8-OHdG content of patients with Q2-Q3 were significantly higher than those of patients with<Q1 and Q1-Q2, and serum NO, MDA, LPO and 8-OHdG content of patients with Q1-Q2 were significantly higher than those of patients with<Q1;serum ox-LDL, LDL-C and ApoB content of patients with Lp-PLA2>Q3 were significantly higher than those of patients with<Q1, Q1-Q2 and Q2-Q3 while HDL-C and ApoA1 content were significantly lower than those of patients with<Q1, Q1-Q2 and Q2-Q3;serum ox-LDL, LDL-C and ApoB content of patients with Q2-Q3 were significantly higher than those of patients with <Q1 and Q1-Q2 while HDL-C and ApoA1 content were significantly lower than those of patients with<Q1 and Q1-Q2;serum ox-LDL, LDL-C and ApoB content of patients with Q1-Q2 were significantly higher than those of patients with<Q1 while HDL-C and ApoA1 content were significantly lower than those of patients with<Q1.Conclusion: Serum Lp-PLA2 and NSE levels increase significantly in patients with acute cerebral infarction, the increase of Lp-PLA2 is associated with abnormal lipid metabolism, and the increase of NSE is associated with neural oxidative damage.

Magnetic resonance imaging focused on the ferritin heavy chain 1 reporter gene detects neuronal differentiation in stem cells

The neuronal differentiation of mesenchymal stem cells offers a new strategy for the treatment of neurological disorders.Thus,there is a need to identify a noninvasive and sensitive in vivo imaging approach for real-time monitoring of transplanted stem cells.Our previous study confirmed that magnetic resonance imaging,with a focus on the ferritin heavy chain 1 reporter gene,could track the proliferation and differentiation of bone marrow mesenchymal stem cells that had been transduced with lentivirus carrying the ferritin heavy chain 1 reporter gene.However,we could not determine whether or when bone marrow mesenchymal stem cells had undergone neuronal differentiation based on changes in the magnetic resonance imaging signal.To solve this problem,we identified a neuron-specific enolase that can be differentially expressed before and after neuronal differentiation in stem cells.In this study,we successfully constructed a lentivirus carrying the neuron-specific enolase promoter and expressing the ferritin heavy chain 1 reporter gene;we used this lentivirus to transduce bone marrow mesenchymal stem cells.Cellular and animal studies showed that the neuron-specific enolase promoter effectively drove the expression of ferritin heavy chain 1 after neuronal differentiation of bone marrow mesenchymal stem cells;this led to intracellular accumulation of iron and corresponding changes in the magnetic resonance imaging signal.In summary,we established an innovative magnetic resonance imaging approach focused on the induction of reporter gene expression by a neuron-specific promoter.This imaging method can be used to noninvasively and sensitively detect neuronal differentiation in stem cells,which may be useful in stem cell-based therapies.