维拉帕米对脑膜瘤生长影响的实验研究

目的探讨钙通道阻滞剂维拉帕米对脑膜瘤细胞增殖的影响.方法将不同浓度的维拉帕米作用于培养的脑膜瘤细胞,MTT法观察其对细胞增殖的抑制作用.建立裸鼠皮下脑膜瘤模型,观察服用维拉帕米后肿瘤的生长情况,免疫组化检测皮下肿瘤增殖细胞核抗原(PCNA)的表达.结果维拉帕米浓度呈依赖性地抑制脑膜瘤细胞增殖,浓度为1μ mol/L时即有抑制效应,100μmol/L时抑制作用最明显.服药组肿瘤的体积明显小于对照组(P＜0.01),其PCNA的表达也低于对照组(P＜0.05).结论维拉帕米在体外和体内均可抑制脑膜瘤细胞的增殖和生长.     

Antagonistic effects of trasilast on proliferation and collagen synthesis induced by TGF-\sB<Subscript>2</Subscript> in cultured human trabecular meshwork cellsin cultured human trabecular meshwork cells

Summary Whether tranilast had antagonistic effect on proliferation inhibition and collagen synthesis promotion induced by TGF-\sB₂ in cultured human trabecular meshwork cells was investigated. Suspension of 1×10⁴ cultured human trabecular meshwork cells of 3–5 passage was distributed in each well of a 96-well disk and divided into control group and experimental group. After 24 h, 0 μg/ml (control), 12.5 μg/ml, 25 μg/ml, 50μg/ml tranilast with 3.2 ng/ml TGF-\sB₂ were added into the incubation medium. Another 24 h later, proliferation and collagen synthesis in cultured human trabecular meshwork cells were examined respectively by using tetrazolium-based semiautomated colormetric (MTT) assay and³H-proline incorporation with liquid scintillation technique. The results showed absorbance (A) values of the experimental groups were 0.9036±0.3017, 1.1361±0.1352, 1.2457±0.1524 according to the different concentrations of tranilast, and 0.8956±0.1903 of the control group. In comparison with the control group, 25 μg/ml (q=3.23,P<0.05), 50 μg/ml (q′=4.70,P<0.01) tranilast significantly antagonized the decrease of theA values induced by TGF-\sB₂ in the cultured human trabecular meshowrk cells. In comparison with the control group [817.37±124.21 cpm/10⁴ cells], 12.5 μg/ml (620.33±80.46 cpm/10⁴ cells,q′=4.26,P<0.05), 25 μg/ml (59.4.58±88.13 cpm/10⁴ cells,q′=4.81,P<0.01), 50 μg/ml (418.64±67.90 cpm/10⁴ cells,q′=8.62,P<0.01) tranilast significantly inhibited the incorporation of³H-proline into the cultured human trabecular meshwork cells promoted by TGF-\sB₂ in a dose-dependent manner. It was concluded that tranilast had the antagonistic effect on the proliferation inhibition and collagen synthesis promotion induced by TGF-\sB₂ in the cultured human trabecular meshwork cells. Da Banghong, female, born in 1973, Resident. This project was supported by a grant from the National Natural Sciences Foundation of China (No. 38970758).     

Inhibition of PCNA Antisense Oligonucleotides Mediated by Liposome on mRNA Expression and Proliferation of h-RPE Cells

Pro1iferative vitreoretinopathy (PVR), as a blind- ness-causing condition, is a common complication of retina detachment and the main reason that leads to the failure of recovery operation of retina detachment. PVR is essentially an intraocular reactive course of wound healing and principally relevant to pathological prolifera- tion of retina pigment epithelia (RPE). Proliferating cell nuclear antigen (PCNA), expressed in many proliferative tissues, play an important role in the cell cycle…     

碱性成纤维细胞生长因子与脑膜瘤细胞增殖活性的关系

目的:研究碱性成纤维细胞生长因子(bFGF)在脑膜瘤中的表达及其与细胞增殖活性间的关系,探讨bFGF在脑膜瘤发生和发展中的作用。方法:用免疫组化LSAB法检测38例脑膜瘤组织中bFGF与增殖细胞核抗原(PCNA)的表达,分析在bFGF不同病理级别脑膜瘤中的表达及其与PCNA标记指数(PCNA-L I)的关系。结果:本组38例中有22例bFGF染色阳性,阳性率为86.84%。在良性组29例中,有24例检测到bFGF的表达,阳性率为82.76%;非典型组和恶性组均有表达。与良性组比较,非典型组和恶性组的bFGF表达强度高,其差异具有显著性。PCNA-L I在良性组、非典型组和恶性组的标记指数分别为13.71±6.1%,31.72±10.7%,47.87±14.0%。非典型型组和恶性组PCNA-L I均高于良性组。bFGF的表达强度与PCNA-L I相关,随着bFGF表达强度的升高,PCNA-L I随之增加。结论:bFGF自分泌环在脑膜瘤的发生和发展过程中起重要作用,bFGF的表达与脑膜瘤细胞增殖活性有关。     

增殖细胞核抗原在脑膜瘤中的表达及其临床意义

目的　探讨增殖细胞核抗原 (PCNA)在脑膜瘤中的表达及临床意义。方法　随机选取 43例脑膜瘤标本 ,常规固定 ,石蜡包埋切片。采用LSAB法进行免疫组化染色 ,比较恶性组与良性组及非典型增生组之间同病理级别组之间、初发组与复发组之间PCNA标记指数的差异。结果　 43例脑膜瘤均有不同程度的PCNA阳性细胞表达。良性组、非典型组和恶性组的标记指数分别为 (8.2± 5 .4) %、(15 .6± 9.8) %和 (2 7.6± 10 .6 ) % ,3组间有显著性差异(P <0 .0 5 )。初发组与复发组的标记指数分别为 (15 .2± 5 .8) %和 (2 1.4± 7.6 ) % ,有显著性差异 (P <0 .0 5 )。结论　PCNA在脑膜瘤中的表达与肿瘤的恶性程度有关 ,其高表达提示复发的可能性大 ,预后不良。     

Effect of DRB on the Biological Characteristics of Human Laryngeal Carcinoma Hep-2 Cell Line

In order to study the effect of 5, 6-Dichloro-1-β-D-ribofuranosyl-benzimidazole (DRB) on the biological characteristics of human laryngeal carcinoma Hep-2 cell line in vitro, Hep-2 cells cultured in vitro were treated with different concentrations of DRB. Changes in cell proliferation, apoptotic rate and invasiveness were detected by MTT assay, flow cytometry (FCM) and matrigel in vitro invasion assay, respectively. It was found that DRB inhibited the proliferation of Hep-2 cells in a dose- and time-dependent manner. After being treated with 0, 10, 20, 40, 80 μmmol/L DRB for 24 h, the apoptotic rate in Hep-2 cells was (0.68±0.19)%, (1.95±0.12)%, (8.51±0.26)%, (11.26±0.17)% and (14.99±0.32)%, respectively. The matrigel in vitro invasion assay revealed that DRB began to inhibit the invasion of Hep-2 cells at the concentration of 5 μmmol/L, and with the increase of DRB concen-tration, the inhibitory effect was enhanced. It was suggested that DRB could influence the essential biological characteristics of Hep-2 cells, inhibit Hep-2 cells proliferation, reduce invasive ability and induce apoptosis of Hep-2 cells.     

人文管理对进修医师焦虑、抑郁倾向干预效果的研究

目的 探讨人文管理对进修医生焦虑、抑郁倾向的干预效果。方法 选择2016年1月至2018年12月开始在首都医科大学附属北京安贞医院进修学习的进修医生进行人文管理,并以2013年4月至2015年12月的进修医师为参照,应用医院焦虑抑郁量表于进修前、后进行问卷调查。所有进修医生均采用常规进修管理模式,干预组在此基础上建立个体化进修学习日程表、配备进修医生导师、定期对进修医生进行走访并组织进修医生座谈会、协助进修医生加入科室学术群、组织协调进修医生参与多学科专病学术查房、通过巴林特小组方式进行负面情绪疏导、将进修医生文化生活融入医院文化建设和对进修结束的进修医生进行随访。应用SPSS 16.0进行t检验和方差分析。结果 两组医生进修前测评数据按照性别、进修科室类别、来源医院级别和进修时长的不同比较,焦虑和抑郁评分差异无统计学意义（P>0.05）。干预组两次测评比较,焦虑第2次评分男女进修医生[（5.90±1.37） vs. （6.48±1.87）,（5.92±1.45） vs. （6.73±2.12）]、进修各科室医生[（5.50±1.23） vs. （6.76±2.35）,（6.03±1.36） vs. （6.64±1.75）,（5.98±1.50） vs. （6.64±2.15）]、来自二、三级医院医生[（5.85±1.29） vs. （6.64±2.02）,（6.00±1.50） vs. （6.78±2.14）]、各进修时长医生[（5.92±1.37） vs. （6.64±2.15）,（5.92±1.47） vs. （6.68±1.98）]和总分[（5.92±1.42） vs. （6.66±2.05）]低于第1次测评评分（P<0.05）;抑郁第2次评分女性进修医生[（6.15±1.37） vs. （6.68±2.06）]、进修医技科室医生[（6.02±1.40） vs. （6.69±1.88）]、来自三级医院医生[（6.13±1.41） vs. （6.51±1.90）]、各时长进修医生[（6.04±1.42） vs. （6.50±2.02）,（6.12±1.34） vs. （6.57±1.97）]和总分[（6.09±1.37） vs. （6.54±1.99）]低于第1次测评评分（P<0.05）。对照组第2次测评焦虑评分,男性进修医生评分[（6.63±1.15） vs. （6.11±1.76）]高于第1次测评评分（P<0.05）。两组医生第2次测评数据比较,焦虑评分方面,干预组各分层医生评分和总分评分低于对照组（P<0.05）;抑郁评分方面,女性进修医生、来自三级医院医生、进修时长6个月医生和总分评分低于对照组（P<0.05）。结论 应用人文管理方式加强对进修医生进行管理,可以在一定程度上改善进修医生的心理状态,特别是缓解焦虑状态,是一种值得推广的进修管理模式。     

Effects of simulated weightlessness on tight junction protein occludin and Zonula Occluden-1 expression levels in the intestinal mucosa of rats

This study investigated the tight junction(TJ) protein expression of the intestinal mucosa in a rat tail-suspension model under simulated weightlessness.Twenty-four Wistar rats were randomly divided into three groups:CON group(n=8),control;SUS-14 d group(n=8),tail-suspension for 14 days;SUS-21 d group(n=8),tail-suspension for 21 days.Occludin and Zonula Occluden-1(ZO-1) expression levels were determined by immunohistochemical analysis and mRNA fluorescent quantitative PCR.Plasma levels of diamine oxidase(DAO) and d-lactate were determined using enzymatic spectrophotometry.Immunohistochemical results for occludin and ZO-1 showed disruption of the TJs in the intestinal mucosa in SUS-14 d and SUS-21 d groups.The expression levels of occludin and ZO-1 in SUS-21 d group were lower than those in SUS-14 d group,and significantly lower than those in CON group(Occldin:0.86±0.02 vs 1.01±0.03 vs 1.63±0.03 and ZO-1:0.82±0.01 vs 1.00±0.02 vs 1.55±0.01,P<0.01).Moreover,the levels of plasma DAO and d-lactate in SUS-21 d group were higher than those in SUS-14 d group,and significantly higher than those in CON group(DAO:27.58±0.49 vs 20.74±0.49 vs 12.94±0.21 and d-lactate:37.86±0.74 vs 28.26±1.01 vs 17.76±0.91,P<0.01).There were significant negative correlations between occludin or ZO-1 expression levels and DAO(r2=0.9014,r2=0.9355,P<0.01) or d-lactate levels(r2=0.8989,r2=0.9331,P<0.01).Occludin and Zo-1 were reduced in intestinal mucosa both in mRNA and protein levels in the rat tail-suspension model.The significant negative correlations between expression levels of TJs and plasma levels of DAO or d-lactate support the hypothesis that intestinal permeability is increased due to a decrease in TJ protein expression during tail-suspension from 14 days to 21 days.     

Experimental study on the effect of ligustrazine in the prevention of intimal proliferation of deendothelial artery

Ligustrazine possesses multiple pharmacologicaleffects including anti- platelet,anticoagulation,calci-um antagonism and so on[1,2 ] and is able to interfer-ing with multiple cascades of restenosisafter percuta-neou transluminal coronary angioplasty ( PTCA) .Toevaluate the possibility of using ligustrazine in theprevention of restenosis,we investigated the effectsof ligustrazine on the intimal thickening ofair- injuredcarotid artery of rats,and examined the effects ofligustrazine on the prolif…     

PCNA反义寡核苷酸治疗裸鼠骨肉瘤的效应

目的探讨增殖细胞核抗原（PCNA）反义寡核苷酸对裸鼠骨肉瘤生长的抑制作用。方法制备BALC／C裸鼠皮下骨肉瘤模型12只，随机分为PCNA反义寡核苷酸治疗组和对照组，每组6只。接种MG-63人成骨肉瘤细胞后24h内用PCNA反义寡核苷酸皮下注射进行治疗，对照组只注射生理盐水，每周2次，连续4周；观察各组裸鼠肿瘤的生长情况、裸鼠的一般情况与生存期。断颈处死裸鼠，游标卡尺测量肿瘤体积大小，天平称量肿瘤的重量。结果PCNA—ASODN治疗组裸鼠骨肉瘤的生长受到抑制，抑瘤率为46．53％。结论PCNA反义寡核苷酸对骨肉瘤的生长具有抑制作用，通过反义技术可抑制靶基因的表达，从而抑制骨肉瘤细胞的增殖。     

Effects of Sodium Salicylate on the Expression of HSP27 Protein during Oxidative Stress in Tissue-cultured Human Lens Epithelial Cells

The lens is avascular and has no innervation, and must derive nutrients from the aqueous humor[1]. Heat shock protein (HSP) was discovered by Ritossa in 1962 as a special group of heat shock biosynthetic proteins with various forms. Although stress responses include all of the processes that organisms have developed to sur-vive when they are exposed to environmental challenges, such as heat stress, desiccation, chemical stress, or star-vation, the effector proteins are almost all referred to …     

Expression of integrin-α<Subscript>3</Subscript> mRNA in meningiomas and its correlation with proliferation and invasion

To investigate the expression of integrin-α3 mRNA in meningiomas and its correlation with proliferation and invasion, the expression of integrin-α3 subunit was detected by using in situ hybridization in patients with meningiomas （36 cases） and normal dura （2 cases） and arachnoid tis- sues （2 cases）. SABC immunohistochemical assay was used to study the expression of Ki-67 nuclear antigen. The results showed that the expression of integrin-% mRNA in benign, atypical and malig- nant meningiomas was 2.52±0.362, 1.75±0.316 and 1.42±0.633, respectively. The expression levels of integrin-α3 mRNA was significantly lower in atypical or malignant meningiomas than those in benign meningiomas （P〈0.05, P〈0,01, respectively）. The expression of integrin-α3 mRNA in those with invasive biological behavior was lower than that in those without invasion （1.63±0.462 vs. 2.61±0.526, P〈0.01）. Moreover, the expression of integrin-α3 mRNA was inversely associated with Ki-67 labeling index in all cases. It suggested that integfin-α3 subunit participated in the modulatory process of growth of meningiomas. The proliferation activity and malignant grade of meningiomas were increased with the decreased expression of integrin-α3 subunit, and the down-regulation of integrin-α3 mRNA was associated with the invasive biological behaviors in meningiomas.     

Effect of Nuclear Factor-κB on Airway Remodeling in Asthmatic Rats

Summary In order to investigate the effect of nuclear factor-κB (NF-κB) on airway remodeling in asthmatic rats. 18 Wistar rats were divided into three groups: asthmatic group: pyrrolidine dithiocarbamate (PDTC) group, in which rats were injected intraperitoneally with NF-κB specific inhibitor PDTC (100 mg/kg) before ovalbumin (OVA) challenge; control group. The NF-κB activity and the expression of inhibitory protein κBα (I-κBα) in airway were detected by electrophoretic mobility shift assay (EMSA). Western blot and immunohistochemistry respectively. The infiltration of inflammatory cells, the number of Goblet cells, the area of collagen and smooth muscle in airway were measured by means of image analysis system. The results showed that with the up-regulation of airway NF-κB activity in asthmatic group, the number of goblet cells (3.08±0.86/100 μm basement membrane (BM)), the area of collagen (24.71±4.24 μm²/μm BM) and smooth muscle (13.81±2.11 μm²/μmBM) in airway were significantly increased (P<0.05) as compared with control group (0.14±0.05/100μmBM. 14.31±3.16 μm²/μm BM and 7.67±2.35 μm²/μm BM respectively) and PDTC group (0.33±0.14/100 μmBM, 18.16±2.85 μm²/μm BM and 8.95±2.16 μm²/μm BM respectively). However, there was no significant difference between PDTC group and control group (P>0.05). It was concluded that the activity of NF-κB is increased in airway of asthmatic rats. Inhibition of NF-κB, activation can attenuate constructional changes in asthma airway, suggesting NF-κB may contribute to asthmatic airway remodeling. XU Shuyun, female, born in 1970, M. D. Ph. D. This project was supported by a grant from Foundation for University Key Teacher by the Ministry of Education (2000 year).     

Shenmai Injection (参麦注射液) inhibiting the extracellular signal regulated kinase-induced human airway smooth muscle proliferation in asthma

Objective： To investigate the relationship between the proliferation of sensitized human airway smooth muscle cells （HASMCs） and the expression of extracellular signal regulated kinase （ERK） and the effect of Shenmai Injection （参麦注射液, SMI） on HASMCs. Methods： The HASMCs cultured in vitro were divided into three groups： （1） control group; （2） sensitized group： containing 10% asthmatic serum; （3） SMI group： further divided into three different concentration subgroups interferred with 10 μL/mL, 50 μL/mL, and 100 μL/mL SMI, respectively. The proliferation of HASMCs was detected using MTT method, the expression of proliferating cell nucleus antigen （PCNA） in HASMCs was detected using immunocytochemical staining, and the expression of phosphoration-ERK1/2 （p-ERK1/2） protein was detected using Western-blot. Results： After passive sensitization, the optical density value （A49o value） of HASMCs was significantly increased from 0.366± 0.086 to 0.839 ± 0.168 （P〈0.05）. In addition, the expression of PCNA was significantly increased from 28.7% ± 5.9% in the control group to 69.8% ±7.5% in the sensitized group （P〈0.05）. At the same time, the expression of p-ERK1/2 in passively sensitized HASMCs was significantly increased compared with the control group （all P〈0.05）. Affer application of 10 μL/mL, 50 μL/mL, and 100 μL/mL SMI to the cultured media of passively sensitized group, the A570 value was significantly decreased from 0.839 ±0.168 to 0.612 ±0.100, 0.412 ± 0.092, and 0.339 ± 0.077, respectively （P〈0.05）. Moreover, the expression of PCNA was significantly decreased from 69.8% ±7.5% to 57.8% ± 6.2%, 40.7%±5.4%, and 26.1% ± 5.2%, respectively. At the same time, the expression of p-ERK1/2 in each SMI group was significantly decreased compared with the sensitized group （all ,P〈0.05）. Conclusion： ERK signal transduction pathway may be involved in the airway remodeling in asthma. The expression of ERK can be inhibited by SMI in a dose-dependent manner, thus preventing the proliferation of HASMCs.     

长链非编码RNA ATB调控miR-144对胶质瘤迁移和侵袭的影响

目的 探讨长链非编码RNA ATB （lncRNA ATB）调控miR-144对胶质瘤迁移和侵袭的影响。方法 采用qPCR检测lncRNA ATB在胶质瘤组织和癌旁正常组织中的表达差异以及慢病毒si-ATB对胶质瘤细胞的转染效率情况;通过双荧光素酶报告基因进行检测lncRNA ATB和miR-144之间的关系;通过平板克隆实验检测lncRNA ATB对胶质瘤细胞株U87和U251增殖能力的影响;流式细胞术检测lncRNA ATB对胶质瘤细胞株凋亡行为的影响;Transwell实验检测lncRNA ATB对细胞株侵袭能力的影响;裸鼠体内实验检测lncRNA ATB对裸鼠移植瘤的体积和质量的影响情况。结果 胶质瘤lncRNA ATB的表达水平高于癌旁正常组织（P<0.05）,高水平lncRNA ATB患者的生存率低于低水平lncRNA ATB患者;使用si-ATB1和si-ATB2分别转染胶质瘤U87和U251细胞后,lncRNA ATB的表达水平降低;过表达miR-144后,野生型lncRNA ATB的荧光素酶活性受到抑制,对突变型lncRNA ATB的荧光素酶活性影响不明显。转染si-ATB 24、48和72小时后,U87[（186.4±12.4）个比（73.6±8.6）个比（62.6±5.6）个,P<0.05]和U251细胞[（192.2±15.3）个比（63.6±6.3）个比（68.3±7.6）个,P<0.05]和U251细胞的增殖能力低于对照组;lncRNA ATB的下调提高了U87和U251凋亡百分比（P<0.05）;抑制lncRNA ATB后,U87细胞和U251细胞的细胞侵袭能力降低;与对照组相比,si-ATB组肿瘤体积和肿瘤重量均小于或低于对照组（P<0.05）。结论 lncRNA ATB通过调控miR-144的表达促进胶质瘤细胞的生物学行为。     

Trichostatin A Regulates hGCN5 Expression and Cell Cycle on Daudi Cells in vitr

Summary The expression of human general control of amino acid synthesis protein 5 (hGCN5) in human Burkitt’s lymphoma Daudi cells in vitro, effects of Trichostatin A (TSA) on cell proliferation and apoptosis and the molecular mechanism of TSA inhibiting proliferation of Daudi cells were investigated. The effects of TSA on the growth of Daudi cells were studied by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium (MTT) assay. The effect of TSA on the cell cycle of Daudi cells was assayed by a propidium iodide method. Immunochemistry and Western blot were used to detect the expression of hGCN5. The proliferation of Daudi cells was decreased in TSA-treated group with a 24 h IC₅₀ value of 415.3979 μg/L. TSA induced apoptosis of Daudi cells in a time-and dose-dependent manner. Treatment with TSA (200 and 400 μg/L) for 24 h, the apoptosis rates of Daudi cells were (14.74±2.04) % and (17.63±1.25) %, respectively. The cell cycle was arrested in G₀/G₁ phase (50, 100 μg/L) and in G₂/M phase (200 μg/L) by treatment with TSA for 24 h. The expression of hGCN5 protein in Daudi cells was increased in 24 h TSA-treated group by immunochemistry and Westem blot (P<0.05). It was suggested that TSA as HDACIs could increase the expression of hGCN5 in Daudi cells, and might play an important role in regulating the proliferation and apoptosis of B-NHL cell line Daudi cells. This project was supported by grant from the National Natural Sciences Foundation of China (No. 30271672).     

Regulatory Effect of Dexamethasone on Aquaporin-1 Expression in Cultured Bovine Trabecular Meshwork Cells

Itiswell knownthattheglucocorticoidcancauseintraocularhypertensionafterlong termlocalorsystematicapplication.Thechangesinopticpa pillaanddefectofvisualfieldwillresultifthehighintraocularpressurepersistsforsometime.Nowa days,withthewidespreaduseofglucocorticoidinclinicalpractice,thecasesofsecondaryglaucomainducedbyglucocorticoid(GIG)areincreasingdramatically.Althoughmanyinvestigationscon cerningGIGhavebeenconducted,theexactmech anismremainsunclear.Recentintroductionofaquaporinsconceptionandt…