S100β对重症肺炎患者预后评估的价值

目的:探讨S100β对重症肺炎患者预后的评估价值。方法:以出院作为研究的观察终点,对2021年5月至2023年10月期间中山大学附属第一医院急诊科收治的107例重症肺炎患者的资料进行回顾性分析,根据S100β的血清学浓度分为阴性组和阳性组,根据患者出院存活状态分为存活组及死亡组,用GCS评分评估患者入院时神志,用CURB-65评分、SOFA评分、APACHEⅡ评分、PSI指数评估重症肺炎患者病情严重程度,采用出院时存活情况、机械通气时间(天)、去甲肾上腺素剂量(mg)、CRRT时间(天)评估重症肺炎患者预后。结果:107例重症肺炎患者中S100β阳性组的患者48人(44.9%),阴性患者59人(55.1%)。S100β阳性患者GCS评分低于S100β阴性患者,SOFA评分高于S100β阴性患者。S100β阳性组的患者住院期间机械通气时间、去甲肾上腺素使用剂量、CRRT治疗时长均高于S100β阴性患者。S100β阳性组的患者院内死亡率(62.5%)显著高于S100β阴性患者的(23.7%)。S100β联合SOFA评分及APACHEⅡ评分预测重症肺炎预后时,能辅助原有评分,提高诊断的特异性。结论:重症肺炎患者脑损伤发生率较高,可达44.9%,S100β能反映重症肺炎患者的病情严重程度,是预测重症肺炎患者预后不良的独立危险因素。

GDNF、GAP-43、NSE及S-100蛋白在先天性巨结肠患儿中的表达水平及意义

目的探讨与分析胶质细胞源性神经生长因子(GDNF)、生长相关蛋白-43(GAP-43)、神经元特异性烯醇化酶(NSE)、S-100蛋白在先天性巨结肠(HD)患儿中的表达水平及意义。方法选择2019年9月至2022年10月诊治的先天性巨结肠患儿72例作为巨结肠组,选择同期因其他非肠神经节病变而行结肠手术的患儿72例作为参照组。取两组的结肠全层病理标本并进行GDNF、GAP-43、NSE及S-100蛋白表达免疫组化分析,同时进行先天性巨结肠相关性小肠结肠炎(HAEC)诊断评分与相关性分析,取巨结肠组的不同肠段组织标本进行检测。结果巨结肠组的结肠全层GDNF、GAP-43、NSE、S-100蛋白表达阳性率分别为77.8%、73.6%、81.9%、83.3%,显著高于参照组的22.2%、26.4%、20.8%、22.2%(P<0.001)。先天性巨结肠患儿不同结肠区域(狭窄段、移行段、扩张段、正常段)的GDNF、GAP-43、NSE、S-100蛋白表达阳性率对比差异有统计学意义(P<0.001)。巨结肠组的HAEC诊断评分与参照组相比明显提高(P<0.001)。在巨结肠组中,Spearman分析显示HAEC诊断评分与结肠全层GDNF、GAP-43、NSE、S-100蛋白表达阳性率呈正相关(P<0.001)。结论先天性巨结肠患儿多伴有GDNF、GAP-43、NSE、S-100蛋白的高表达,与患儿病情存在相关性,值得临床关注。

S100 protein expression during induced Schwann cell-like cell differentiation of rat bone marrow mesenchymal cells in vitro

BACKGROUND： S100 protein can promote axonal growth. Therefore, transplantation of induced bone marrow-derived mesenchymal stem cells （MSCs） that can secrete S100 may provide a beneficial microenvironment for neural regeneration. OBJECTIVE： To explore the changes in S100 expression during rat MSCs differentiation into Schwann ceils in vitro. DESIGN, TIME AND SETTING： This cytology experiment was performed at the Jiangsu Key Laboratory of Neuroregeneration, Nantong University in China, from January 2006 to May 2007. MATERIALS： The rabbit anti-S100 polyclonal antibody was purchased from Dako, Denmark; the mouse anti-rat S100 monoclonal antibody was purchased from Sigma, USA. METHODS： MSCs were cultured from adult Sprague-Dawley rat femur and tibia. Cell proliferation was determined by the MTT method and CD markers, and cell cycle was measured by flow cytometry. MSCs were induced to differentiate into SC cells. SC cells were stained for S100 protein, glial fibrillary acidic protein, and low-affinity nerve growth factor receptor. S100 protein and mRNA levels were evaluated by flow cytometry, Western blot, and reverse transcription-polymerase chain reaction. MAIN OUTCOME MEASURES： S100 protein and mRNA expression. RESULTS： MSCs exhibited high amplification potential over eight passages. Prior to induction, the majority of MSCs were at the G0/G1 phase of the cell cycle. After induction, MSCs displayed morphology changes similar to Schwann cells. Moreover, induction increased S100 mRNA levels. Immunofluorescence showed that MSCs expressed S100 protein, glial fibrillary acidic protein, and low-affinity nerve growth factor receptor at 7 days of induction. Induction also increased S100 protein levels compared with untreated MSCs. CONCLUSION： MSCs are capable of differentiating into Schwann cells-like cells under conditional induction in vitro, with increasing S100 mRNA and protein expression.

The S100 protein family and its application in cardiac diseases

The S100 protein family is the largest group of EF-hand signaling proteins in humans. The members of the S100 protein family are expressed in many tissues and play different functions. Many diseases are related to S100 proteins, which function as new biochemical markers especially in cardiac diseases. The most studied members, protein S100Β and protein S100A1, exhibit activities in cardiac diseases, and these immunohistochemical expressions or serum levels have been used in predicting neurologic outcome after resuscitation of cardiac arrest or recovery of cardioprotective function.

S100 calcium binding protein A6 and associated long noncoding ribonucleic acids as biomarkers in the diagnosis and staging of primary biliary cholangitis

BACKGROUND Primary biliary cholangitis(PBC)is a chronic and slowly progressing cholestatic disease,which causes damage to the small intrahepatic bile duct by immunoregulation,and may lead to cholestasis,liver fibrosis,cirrhosis and,eventually,liver failure.AIM To explore the potential diagnosis and staging value of plasma S100 calcium binding protein A6(S100A6)messenger ribonucleic acid(mRNA),LINC00312,LINC00472,and LINC01257 in primary biliary cholangitis.METHODS A total of 145 PBC patients and 110 healthy controls(HCs)were enrolled.Among them,80 PBC patients and 60 HCs were used as the training set,and 65 PBC patients and 50 HCs were used as the validation set.The relative expression levels of plasma S100A6 mRNA,long noncoding ribonucleic acids LINC00312,LINC00472 and LINC01257 were analyzed using quantitative reverse transcription-polymerase chain reaction.The bile duct ligation(BDL)mouse model was used to simulate PBC.Then double immunofluorescence was conducted to verify the overexpression of S100A6 protein in intrahepatic bile duct cells of BDL mice.Human intrahepatic biliary epithelial cells were treated with glycochenodeoxycholate to simulate the cholestatic environment of intrahepatic biliary epithelial cells in PBC.RESULTS The expression of S100A6 protein in intrahepatic bile duct cells was up-regulated in the BDL mouse model compared with sham mice.The relative expression levels of plasma S100A6 mRNA,log10 LINC00472 and LINC01257 were upregulated while LINC00312 was down-regulated in plasma of PBC patients compared with HCs(3.01±1.04 vs 2.09±0.87,P<0.0001;2.46±1.03 vs 1.77±0.84,P<0.0001;3.49±1.64 vs 2.37±0.96,P<0.0001;1.70±0.33 vs 2.07±0.53,P<0.0001,respectively).The relative expression levels of S100A6 mRNA,LINC00472 and LINC01257 were up-regulated and LINC00312 was down-regulated in human intrahepatic biliary epithelial cells treated with glycochenodeoxycholate compared with control(2.97±0.43 vs 1.09±0.08,P=0.0018;2.70±0.26 vs 1.10±0.10,P=0.0006;2.23±0.21 vs 1.10±0.10,P=0.0011;1.20±0.04 vs 3.03±0.15,P<0.0001,respectively).The mean expression of S100A6 in the advanced stage(III and IV)of PBC was up-regulated compared to that in HCs and the early stage(II)(3.38±0.71 vs 2.09±0.87,P<0.0001;3.38±0.71 vs 2.57±1.21,P=0.0003,respectively);and in the early stage(II),it was higher than that in HCs(2.57±1.21 vs 2.09±0.87,P=0.03).The mean expression of LINC00312 in the advanced stage was lower than that in the early stage and HCs(1.39±0.29 vs 1.56±0.33,P=0.01;1.39±0.29 vs 2.07±0.53,P<0.0001,respectively);in addition,the mean expression of LINC00312 in the early stage was lower than that in HCs(1.56±0.33 vs 2.07±0.53,P<0.0001).The mean expression of log10 LINC00472 in the advanced stage was higher than those in the early stage and HCs(2.99±0.87 vs 1.81±0.83,P<0.0001;2.99±0.87 vs 1.77±0.84,P<0.0001,respectively).The mean expression of LINC01257 in both the early stage and advanced stage were up-regulated compared with HCs(3.88±1.55 vs 2.37±0.96,P<0.0001;3.57±1.79 vs 2.37±0.96,P<0.0001,respectively).The areas under the curves(AUC)for S100A6,LINC00312,log10 LINC00472 and LINC01257 in PBC diagnosis were 0.759,0.7292,0.6942 and 0.7158,respectively.Furthermore,the AUC for these four genes in PBC staging were 0.666,0.661,0.839 and 0.5549,respectively.The expression levels of S100A6 mRNA,log10 LINC00472,and LINC01257 in plasma of PBC patients were decreased(2.35±1.02 vs 3.06±1.04,P=0.0018;1.99±0.83 vs 2.33±0.96,P=0.036;2.84±0.92 vs 3.69±1.54,P=0.0006),and the expression level of LINC00312 was increased(1.95±0.35 vs 1.73±0.32,P=0.0007)after treatment compared with before treatment using the paired t-test.Relative expression of S100A6 mRNA was positively correlated with log10 LINC00472(r=0.683,P<0.0001);serum level of collagen type IV was positively correlated with the relative expression of log10 LINC00472(r=0.482,P<0.0001);relative expression of S100A6 mRNA was positively correlated with the serum level of collagen type IV(r=0.732,P<0.0001).The AUC for the four biomarkers obtained in the validation set were close to the training set.CONCLUSION These four genes may potentially act as novel biomarkers for the diagnosis of PBC.Moreover,LINC00472 acts as a potential biomarker for staging in PBC.

APPLICATION OF HMB－45 MONOCLONAL ANTIBODY AND S100 PROTEIN IN THE IMMUNOHISTOCHEMICAL DIAGNOSIS OF MELANOMA

We tested a variety of fixed embedded sections of malignant tumors with HMB-45 MoAband S-100 polyclonal antibody.The results showed that RMB-45 was a highly sensitive and specificantibody for recongnizing melanoma on fixed paraffin-embedded tissue sections, it reacted with 96.6percent of melanomas tested(all primary and 6 of 7 metastatic lesions)Both pigmented and nonpigmeated melanomas were recongnized.Malignant tumors of epithelial,lymphoid and mesenchymal origin were all negative.Although antibody to S-100 protien quite sensitive,it was not melanome-specific and it reached with all melanomas including the one metastatic melanoma that did not react withHMB-45,it we also positive in one of five lymphomas and one of three sarcomas.AdditionallyHMB-45 reacted with junctional nevi and componentes of compound neai and not with intradermalnevi and the dermal components of compound nevi.

Preparation of Polyclonal Antisera of Dairy Cow S100A12 Protein

[Objective] This study aimed to prepare dairy cow anti-S100A12 antisem and develop a highly effective and sensitive immunological detection reagent for further investigation of the functions of dairy cow S100A12. [Method] Purified S100A12 protein was respectively emulsified with Freund＇s complete adjuvant and Freund＇s incomplete adjuvant as the antigen for immunizing New Zealand white rabbits to prepare the polyclonal antisera. The titer was detected using agar double diffusion assay and indirect enzyme-linked immunoserbent assay （ELISA） and the specificity was determined with Western Blot. [ Result ] The titer of anti- S100A12 antisera was 1： 8 as determined by agar double diffusion assay and over 1：409 600 by ELISA. Western Blot result showed that the polyclonal antisera could be specifically combined with S100A12 protein. [ Conclusion] The results indicated that anti-S100A12 polyclonal antibody with high fiter and high specificity was successfully obtained, which provided a novel tool for further investigation of the functions of S100A12 gene.

Immunoexpression of Cathepsin D and S100A4 Protein and Their Molecular Subtyptes in Canine Mammary Carcinomas

Cathepsin D (CD), a lysosomal protease, and S100A4 protein, a calcium binding motif, are considered to be involved in metastasis in various human cancers. No data regarding such proteins are available for canine mammary carcinomas (CMCs). Accordingly, their expression in association with known factors of prognosis was investigated in this study. For that, 66 surgically resected CMCs were submitted to an immunohistochemical evaluation using anti CD, S100A4 protein, HER2, estrogen receptor α, cytokeratin 5, and p63 antibodies, further characterizing the tumors' molecular subtype. An increase in S100A4 immunoexpression by neoplastic luminal mammary cells was associated with an infiltrative tumor mode of growth, consequently leading us to conclude that S100A4 protein could be related to progression in CMCs. Additionally, the occurrence of the luminal A molecular subtype was associated with the complex histotype in CMCs. Although we have demonstrated that changes in S100A4 protein immunoexpression occurs in CMCs, further studies are needed to determine whether this represents important independent biomarkers for CMCs.

中枢神经系统炎症患者脑脊液S-100B蛋白和神经元特异性烯醇化酶含量的测定

为了探讨脑脊液（CSF）S-100B蛋白和神经元特异性烯醇化酶（NSE）含量对中枢神经系统（CNS）炎症患者脑损伤的评估价值,采用酶联免疫吸附试验双抗体夹心法对42例单纯疮疹病毒性脑炎（病脑组）、19例化脓性脑膜炎（化脑组）、17例隐球菌性脑膜炎（隐脑组）患者和22例无神经系统疾病、无肿瘤的外科腰麻患者（对照组）CSF中的S-100B蛋白和NSE进行了动态观察。结果显示,3组CNS炎症患者脑脊液S-100B蛋白含量均显著高于对照组（P<0.01）,其中病脑组>化脑组>隐脑组（P<0.01）;脑脊液NSE含量病脑组最高,与化脑组和隐脑组相比差异有著性意义（P<0.05和P<0.01）,隐脑组与对照组差异无显著性意义（P>0.05）;动态检测发现,脑脊液S-100B蛋白和NSE含量随3组CNS炎症患者病情的轻重而发生相应的变化。研究表明,3组CNS炎症患者脑脊液S-100B和NSE含量均有不同程度的增高,且与患者脑损伤的严重程度有关。

新生鼠缺氧缺血性脑损伤S-100 NSE mRNA和蛋白水平变化

目的研究缺氧缺血性脑损伤（ＨＩＢＤ）后血和脑脊液中Ｓ－１００蛋白（Ｓ—１００）、神经元特异性烯醇化酶（ＮＳＥ）水平的变化及其与脑细胞死亡数的相关性，并探讨这些蛋白质水平变化的机制。方法采用 ７ ｄ龄 ＳＤ大鼠ＨＩＢＤ模型，应用放射免疫方法动态观察ＨＩＢＤ血液和脑脊液中Ｓ—１００，ＮＳＥ水平的变化，用ＲＴ－ＰＣＲ的技术和免疫组织化学的方法动态观察 ＨＩＢＤ后不同时间点脑组织中 Ｓ— １００，ＮＳＥ ｍＲＮＡ和蛋白水平表达的变化。结果 ＨＩ后血液中 ２４ ｈ，４８ ｈ Ｓ－ １００分别为（１． ２０５± ０ １８３）μｇ／Ｌ和（ １． ２３５± ０．０９７）μｇ／Ｌ， ＮＳＥ分别为（３．９７ ±０．２２８）ηｇ／ｍｌ和（３．７６±０．２３４）ηｇ／ｍｌ，对照组Ｓ－１００和ＮＳＥ分别为（０．６４５±０．０５）μｇ／Ｌ和（３．１５±０．１６４）ηｇ／ｍｌ。脑脊液中 ２４ ｈ，４８ ｈ Ｓ－ １００分别为（１． ２８± ０． ０３１）μｇ／Ｌ，（１． ３２± ０． ０９７）μｇ／Ｌ，ＮＳＥ分别为（７． １５± ０． ７１７）ηｇ／ｍｌ，（４． ２９± ０．１４４）ηｇ／ｍｌ，对照组 Ｓ－ １００和 ＮＳＥ分别为（０． ６８± ０．０５９） μｇ／Ｌ和（３． ４?

神经元特异性烯醇化酶及S-100蛋白对Creutzfeldt-Jakob病诊断价值的研究

目的 探讨早期诊断Creutzfeldt Jakob病 (CJD)的一种简便易行的检测方法。方法 采用ELISA及双抗体夹心方法检测 10例CJD、10例非CJD痴呆患者及 10名健康对照者的血清及CSF中神经元特异性烯醇化酶 (NSE)、S 10 0蛋白水平。同时对CJD患者血清中朊蛋白 (PrP)基因进行检测。结果 CJD组血清及CSF中NSE、S 10 0蛋白均较非CJD痴呆组升高 (均P <0 .0 5 ) ,血清中S 10 0蛋白明显升高 (P <0 .0 1)。CJD组血清中NSE及CSF中NSE、S 10 0蛋白较健康对照组明显升高 (均P <0 .0 1) ,血清中S 10 0蛋白较健康对照组升高(P <0 .0 5 ) ;非CJD痴呆组血清及CSF中NSE、S 10 0蛋白较健康对照组升高 (P <0 .0 5 )。 10例CJD中 8例为12 9密码子甲硫氨酸纯合子型 ,2例 12 9密码子甲硫氨酸和缬氨酸杂合型 ,无 12 9密码子缬氨酸纯合子型。结论 早期CSF中NSE及血清、CSF中S 10 0蛋白检测对CJD可以进行病情的判断及预后的评估。血清中S 10 0蛋白检测可用于CJD与非CJD痴呆的鉴别诊断。散发型CJD大部分为 12 9密码子甲硫氨酸纯合型 ,12 9密码子甲硫氨酸及缬氨酸杂合型CJD其临床表现与纯合型不同。

周围神经损伤后S-100蛋白的分布和变化研究

目的 :研究周围神经中s -10 0蛋白的分布及周围神经损伤后s -10 0蛋白的分布变化及时相改变。探索其与神经再生过程的关系。方法 :通过免疫组织化学技术观察大鼠坐骨神经切断后不同时期神经组织中s -10 0蛋白的分布变化。结果 :在未损伤的神经中 ,s -10 0蛋白分布于雪旺细胞的胞浆和胞膜中。神经切断 48h后 ,远近节段均出现s -10 0蛋白免疫反应表达减弱 ,远侧段 1周后几乎没有s -10 0蛋白的表达 ,而近侧段在有新生轴索生长时重新表达s -10 0蛋白。结论 :轴索对于雪旺细胞的成熟具有重要的作用 ,s -10 0蛋白对于轴索的再生具有刺激和诱导作用。s -10 0蛋白在周围神经中只存在于成熟的雪旺细胞。s -10

根据S—100蛋白阳性胶质细胞的变化判断脑挫伤时间的实验研究

本文米用免疫组织化学ＡＢＣ法，观察了２４只大白鼠脑挫伤不同时间的胶质细胞特异性标志物Ｓ－１００蛋白的变化。结果表明，挫伤２天后Ｓ—１００阳性胶质细胞的胞体开始增大，突起不明显，随着脑挫伤时间的延长，胞体增大，突起明显的Ｓ—１００阳性胶质细胞数量明显增加，到第五天时达高峰，在脑挫伤的周围区均为胞林大、突起明显的Ｓ—１００阳性细胞，此结果表明Ｓ－１００蛋白的变化可用于挫伤后时间的判断。

七氟醚不同麻醉深度对术后应激反应以及血清兴奋性氨基酸、S-100β、NSE含量的影响

目的：研究七氟醚不同麻醉深度对术后应激反应以及血清兴奋性氨基酸、S-100β、神经元特异性烯醇化酶（NSE）含量的影响。方法：将2013年4月-2014年5月期间在我院接受静吸复合麻醉的120例患者纳入研究,根据七氟醚麻醉深度不同分为两组,观察组患者接受高浓度七氟醚麻醉[脑电双频指数（BIS）值35-45]、对照组患者接受低浓度七氟醚麻醉（BIS值50-60）,比较两组患者的术后应激反应以及血清兴奋性氨基酸、S-100β、NSE含量。结果：（1）应激反应：观察组患者的血清皮质醇（Cor）、去甲肾上腺素（NE）、肾上腺素（E）含量低于对照组（P〈0.05）;（2）兴奋性氨基酸：观察组患者的血清谷氨酸（Glu）、天冬氨酸（Asp）、甘氨酸（Gly）含量低于对照组（P〈0.05）;（3）血清生化指标：观察组患者的血清S-100β、NSE含量低于对照组（P〈0.05）。结论：高浓度七氟醚麻醉（BIS值35-45）有助于缓解术后应激反应、减少神经细胞损伤、降低血清兴奋性氨基酸含量、S-100β、NSE含量,是更为理想的七氟醚麻醉深度。

定量检测NSE和S-100推断脑挫伤时间的动物实验

观察实验性大鼠脑挫伤后NSE、S－100的时间性变化规律，为法医学推断脑挫伤形成时间提供新的手段。采用改进的Feeney氏落体打击致Wistar大鼠脑挫伤模型，进行免疫组织化学SP法染色，并利用图像分析仪对免疫组化染色阳性细胞灰度和面积进行测量，SAS统计软件分析，结果显示：NSE阳性神经元灰度与面积在伤后1h至2d呈下降趋势，至伤后12h阳性细胞灰度、面积降到最小值（P＜0．01）；S－100阳性细胞面积和灰度伤后呈上升趋势，至伤后4dS－100阳性细胞灰度、面积达到最大值，与对照组及其它实验组比较均有显著性差异（P＜0．01），伤后5d仍保持较高水平；NSE、S－100免疫组织化学染色阳性细胞的数量、灰度、面积改变有时间规律。推断2d内脑挫伤可用NSE作为主要指标，推断2～5d的脑挫伤则以S－100改变为主。

体外循环中S-100蛋白和神经元特异性烯醇化酶的变化及其与炎性细胞因子的关系

目的 观察体外循环 (CPB)手术期间 S- 10 0蛋白和神经元特异性烯醇化酶 (NSE)的变化 ,探讨其与炎性细胞因子的关系。 方法 于 CPB前、复温即刻、主动脉开放和 CPB后 6、2 4小时采集 5 2例心脏病患者颈内静脉血 ,检测 S- 10 0蛋白和 NSE的浓度 ,并将其与炎性细胞因子白细胞介素 - 6 (IL- 6 )、白细胞介素 - 8(IL- 8)、肿瘤坏死因子 - α(TNF- α)和诱导型一氧化氮合成酶 (i NOS)的浓度变化进行相关性分析。 结果 CPB开始后即有 S- 10 0和 NSE升高 (P<0 .0 5 ) ,在术后 6小时达到高峰 (P<0 .0 5 ) ,术后 2 4小时均恢复至术前水平 (P>0 .0 5 ) ,二者变化趋势相同 ;S- 10 0蛋白和 NSE的变化与炎性细胞因子及 i NOS浓度的变化有明显的相关性。 结论 CPB期间可出现 S- 10 0和NSE的一过性升高 ,此与炎症反应中释放的炎性细胞因子及 i NOS的过度表达和产生有关 ,而患者多无明显的脑损害临床表现。

七氟醚与丙泊酚复合麻醉对心内直视术患者S-100β蛋白、NSE和认知功能影响的比较

目的 比较七氟醚与丙泊酚复合麻醉对心内直视术患者S-100β蛋白、神经元特异性烯醇化酶（NSE）和认知功能的影响,为减少心内直视术后脑损伤提供参考.方法 择期行心脏二尖瓣置换术患者60例,性别不限,年龄24-63岁,体质指数16.5-25.8 kg/m2,ASA分级Ⅱ或Ⅲ级,随机分为两组（n=30）：七氟醚复合麻醉组（S组）和丙泊酚复合麻醉组（P组）.麻醉诱导：静脉注射咪达唑仑0.05-0.1 mg/kg,依托咪酯0.3-0.5 mg/kg,瑞芬太尼0.5-1 μg/kg,顺苯磺酸阿曲库铵0.15 mg/kg.麻醉维持：S组持续吸入1.0%-3.0%七氟醚（体外循环期间通过体外循环旁路吸入1.0%-3.0%七氟醚）,P组靶控输注2-4 μg/mL丙泊酚;两组均静脉输注瑞芬太尼0.2-0.4 μg/（kg·min）和顺苯磺酸阿曲库铵0.1 mg/（kg·h）至手术结束.于麻醉诱导前（T0）、体外循环开始后30 min（T1）、体外循环结束时（T2）、手术结束时（T3）、术后12 h（T4）及术后24 h（T5）时采集颈内静脉血测定血清S-100β蛋白和NSE浓度,于术前1 d和术后2 d用简易精神状态检查表（MMSE）评估患者的认知功能.结果 与P组比较,S组T1-T4时点血清S-100β蛋白和NSE浓度降低（P〈0.05）,术后2 d时MMSE评分升高（P〈0.05）,术后认知功能障碍（POCD）发生率下降（P〈0.05）.结论 在心内直视术中,与丙泊酚复合麻醉比较,七氟醚复合麻醉可降低血浆S-100β蛋白和NSE浓度,减少术后POCD的发生,可推荐为预防心内直视术后脑损伤的麻醉方法.

脑出血患者脑脊液IL-1β、S-100蛋白与脑水肿的相关性研究

目的 探讨炎性因子IL 1 β与出血性脑水肿形成的相关性。方法 (1 )病例分组 :ICH组 ,4 1例 ;对照组 ,2 6例 (为CNS非器质性疾病患者 )。 (2 )测试方法 :采用双抗体夹心ELISA法测定患者CSF中IL 1 β和S 1 0 0蛋白含量 ;脑水肿采用BORN BE无创脑水肿动态监测仪测定患者双侧大脑半球脑阻抗值。结果 ICH急性期患者CSF中IL 1 β显著高于对照组 ;急性期、恢复期CSF中S 1 0 0蛋白均显著增高 ;脑出血组急性期患侧大脑半球阻抗值显著增高 (P <0 .0 5 ) ,恢复期略增高 (P >0 .0 5 )。急性期IL 1 β、S 1 0 0蛋白含量与病灶侧大脑半球阻抗值呈显著正相关。

S-100蛋白、CD1a、CD83及Ki-67在口腔朗格汉斯细胞组织细胞增生症中的表达及意义

目的对口腔朗格汉斯细胞组织细胞增生症(LCH)病例进行临床病理回顾性研究及多种免疫表型检测,观察该类疾病的临床病理特征,并对其诊断、鉴别诊断等进行探讨。方法选择原病理诊断为LCH的29例患者为研究对象,分析其临床病理特点;采用链亲和素-生物素-过氧化物酶(SP)法和Elivison二步法检测S-100蛋白、CD1a、CD83及Ki-67在LCH中的表达情况,观察其免疫组织化学结果并进行统计学分析。结果 29例LCH中有5例S-100蛋白、CD1a检测为阴性,排除LCH诊断。在24例LCH中,男性15例,女性9例;患者中位年龄为7.50岁;14例发生于下颌骨,5例发生于上颌骨,5例发生于上下颌骨;按照Bartnick分类,Ⅰ类9例,Ⅱ类13例,Ⅲ类2例;S-100蛋白、CD1a均为阳性表达;颌面部单发骨病损与侵及软组织的颌面部病损相比,Ki-67阳性率较低,而CD83阳性率较高。结论 S-100蛋白、CD1a对于LCH的诊断具有重要意义。颌面部单发的骨LCH可能具有较低的增殖活性,并处于较高的成熟状态;侵及软组织的颌面部LCH可能具有较高的增殖活性,并处于较低的成熟状态。

急性脑梗塞患者S-100蛋白的动态检测及其与临床的相关性研究

目的 :动态观察急性脑梗塞 (ACI)患者血浆中S 10 0蛋白的变化 ,探讨其与脑梗塞体积、神经功能缺损程度、梗塞部位以及患者年龄、性别等方面相关性。方法 :采用ELISA对 5 0例ACI患者的血浆S 10 0水平进行动态检测 ,并与 30例对照组患者进行比较 ,同时应用NIHSS进行神经功能缺损评分及CT扫描测定梗塞体积。结果 :ACI患者S 10 0浓度在发病早期明显升高 ,1～ 3天达到峰值 ,明显高于恢复期及对照组 ;有严重神经功能缺失的患者S 10 0升高更明显 ,S 10 0 >1 0 μg L、NIHSS>12分均提示患者预后不良 ;S 10 0的血浆浓度与梗塞体积呈显著正相关 (P <0 0 1) ,与神经功能缺损程度也呈显著正相关 (P<0 0 1)。结论 :缺血性脑梗塞后血浆中S 10 0的出现与神经胶质细胞的坏死有关 ,并通过受损的血脑屏障进入血液 ,S 10 0可作为缺血性脑损伤尤其是大面积脑梗塞早期的外周标志物 ,是比CT更为敏感的指标 ,对指导治疗有帮助。