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小梁细胞

小梁细胞的相关文献在1989年到2020年内共计136篇,主要集中在眼科学、基础医学、药学 等领域,其中期刊论文130篇、会议论文6篇、专利文献106030篇;相关期刊45种,包括中国老年学杂志、眼科学报(英文版)、眼科新进展等; 相关会议3种,包括第八届全国中医中西医结合眼科学术交流会、第六届全国中医中西医结合眼科学术交流会、山东省第十九次眼科学学术会议等;小梁细胞的相关文献由222位作者贡献,包括张虹、王强、魏厚仁等。

小梁细胞—发文量

期刊论文>

论文:130 占比:0.12%

会议论文>

论文:6 占比:0.01%

专利文献>

论文:106030 占比:99.87%

总计:106166篇

小梁细胞—发文趋势图

小梁细胞

-研究学者

  • 张虹
  • 王强
  • 魏厚仁
  • 张德秀
  • 李美玉
  • 胡义珍
  • 李贵刚
  • 郑雅娟
  • 卓业鸿
  • 葛坚
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 于洋; 李林; 李姗姗; 刘志成
    • 摘要: 目的 小梁网是由小梁薄片和其上的小梁细胞构成的网状结构,它对眼压和房水流出具有重要的调节作用,同时小梁细胞的力学特性和生物学特性与房水流出阻力密切相关.因此本研究主要探讨体外培养的大鼠小梁细胞的生物学特性并应用原子力显微镜测量其弹性模量,为今后建立高眼压动物模型并探究原发性开角型青光眼的发病机制提供理论依据.方法 取3只SD大鼠双眼小梁网组织,应用消化法对小梁细胞进行体外混合培养.倒置相差显微镜和免疫组化SABC染色的方法确定小梁细胞并观察其生物学特性.应用原子力显微镜压痕方法测量细胞的弹性模量.结果 大鼠小梁细胞10 d左右达到融合,细胞形态多样,免疫组化检测结果显示层粘连蛋白、纤维连接蛋白和神经元特异性烯醇化酶染色阳性.小梁细胞弹性模量为1.02 kPa±0.66 kPa.结论消化法成功培养出大鼠小梁细胞,并利用原子力显微镜测得小梁细胞的弹性模量,为之后研究青光眼小梁细胞的特性奠定基础.
    • 刘攀; 孟杰; 刘玉震; 王强
    • 摘要: 目的:探讨不同浓度白细胞介素-6(IL-6)刺激下体外培养的牛眼小梁细胞中纤维连接蛋白的表达变化.方法:采用组织块培养法取新鲜牛眼的小梁网组织,提取并培养第3代牛眼小梁细胞,采用细胞形态学对细胞进行鉴定.经终浓度为0、0.1、0.5、1ng/mL的IL-6药物刺激24h后,采用荧光定量PCR和蛋白质免疫印迹法检测各浓度IL-6刺激下牛眼小梁细胞中FN mRNA和蛋白的表达.结果:培养出的牛眼小梁细胞符合第3代牛眼小梁细胞形态特征.实时荧光定量PCR和蛋白质免疫印迹法显示,不同浓度IL-6刺激下的牛眼小梁细胞所产生的FN mRNA量分别为1.000±0.000、0.213±0.004、0.056±0.001、0.019±0.002,FN蛋白表达量分别为1.167±0.012、0.662±0.009、0.238±0.011、0.061±0.011,均呈下调趋势(rs=-0.713、-0.901,均P<0.05),4组间FN mRNA和蛋白表达均有差异(P<0.05).结论:体外培养的牛眼小梁细胞在外源性IL-6刺激下影响FN mRNA和蛋白的表达,且IL-6浓度与蛋白表达呈负相关性,推测IL-6可能通过影响FN基因与蛋白的表达,进而改变小梁网组织结构.
    • 刘丽玲; 徐建刚; 欧阳智琨; 杨扬帆; 吴开力; 余敏斌
    • 摘要: 目的 探讨瞬时受体电位M7(TRPM7)在地塞米松诱导的小梁细胞骨架重塑中的作用.方法 采用人小梁细胞株进行体外培养,第3~6代小梁细胞用于实验.采用免疫荧光检测技术对TRPM7在小梁细胞中的表达进行定位.在细胞培养基中加入0.2 mg地塞米松处理小梁细胞4d,终浓度分别为1×10-5、1×10-6和1×10-7 mol/L,采用Western blot法检测细胞中TRPM7蛋白在细胞中的表达量.将培养的小梁细胞分为正常对照组、siRNA转染组、TRPM7-siRNA1转染组和TRPM7-siRNA2转染组,采用Western blot法检测细胞中TRPM7和p-cofilin相对蛋白表达量.将培养的细胞分为正常对照组、TRPM7-siRNA转染组、地塞米松处理组和TRPM7-siRNA转染+地塞米松组,采用免疫荧光技术法观察各组细胞中细胞骨架蛋白Phalloidin和黏着斑蛋白Vinculin的表达.将培养的细胞分为正常对照组、地塞米松处理组、siRNA转染组、TRPM7-siRNA转染组、TRPM7抑制剂2-APB处理组和钙离子螯合剂EGTA处理组,采用免疫荧光技术测定各组细胞内钙离子荧光强度变化. 结果 TRPM7主要分布于小梁细胞的细胞膜,TRPM7蛋白相对表达量随着地塞米松剂量的增加而逐渐下降,组间总体比较差异有统计学意义(F=4.210,P<0.05),1×10-5 mol/L地塞米松组细胞中TRPM7蛋白表达量明显低于正常对照组,差异有统计学意义(P=0.011).与正常对照组和siRNA转染组比较,TRPM7-siRNA1组和TRPM7-siRNA2组细胞中TRPM7蛋白相对表达量均明显降低,差异均有统计学意义(均P<0.05).倒置显微镜下可见地塞米松处理组和TRPM7-siRNA转染组细胞突起减少,细胞体稍变大.免疫荧光法显示地塞米松处理组小梁细胞骨架张力纤维和黏着斑蛋白增多,TRPM7-siRNA转染组细胞中张力纤维变少、变细.与正常对照组和siRNA转染组比较,地塞米松处理组和TRPM7-siRNA转染组细胞内钙离子荧光强度变弱.Western blot检测显示,TRPM7-siRNA转染组细胞中p-confilin蛋白相对表达量明显低于siRNA转染组(0.317±0.031 vs.0.092±0.071),差异有统计学意义(t=5.030,P=0.007). 结论 高剂量地塞米松作用后可导致小梁细胞中TRPM7蛋白表达量下调,TRPM7蛋白下调可能通过使小梁细胞骨架微丝蛋白解聚和细胞内钙离子浓度的降低而参与地塞米松诱导的小梁细胞中细胞骨架的重塑.%Objective To investigate the effects of transient receptor potential melastatin (TRPM) 7 on dexamethasone (Dex)-mediated cytoskeleton remodeling in human trabecular meshwork.Methods Human trabecular meshwork cells (HTMs) were primarily cultured and the cells of generation 3 to 6 were used in this study.The expression of TRPM7 protein in the cells was located using immunofluorescence technology.Dex at the dose of 0.2 mg was added into culture medium for 4 days with the final concentration of 1×10-5,1×10-6 and 1×10-7 mol/L,respectively.Western blot assay was employed to detect the relative expression level of TRPM7 protein.Cultured cells were divided into non-transfected group,siRNA transfected group,TRPM7-siRNA1 transfected group and TRPM7-siRNA2 transfected group,and the expressions of TRPM7 protein and p-cofilin protein in the cells were assayed by Western blot method.Cultured cells were divided into normal control group,Dex-treated group,siRNA transfected group and TRPM7-siRNA transfected group,and the expression of phalloidin (a cytoskeletal protein) and Vinculin (focal adhesion protein) was detected by immunofluorescence staining.In addition,cultured cells were divided into normal control group,Dex-treated group,2-APB (a Ca2+ inhibitor) treated group,ethylene glycol tetraacetic acid (EGTA) (a calcium chelator)-treated group,TRPM7-siRNA transfected group and TRPM7-siRNA+Dex group,and the [Ca2+] i in the cells was observed by Fluo-3AM immunofluorescence staining.Western blot assay was used to detect the expression of p-cofilin in the cells.Results TRPM7 was positively expressed on the cell membrane.The relative expression of TRPM7 was gradually reduced with an increase of Dex dose (F=4.210,P<0.05),and the expression of TRPM7 was significantly decreased in 1 × 10-5 mol/L Dex group compared with the normal control group (P< 0.05).Western blot assay revealed that the relative expression levels of TRPM7 in the TRPM7-siRNA1 and TRPM7-siRNA2 group were significantly lower than those of non-siRNA transfected group and siRNA transfected group (all at P<0.05).In the Dex-treated group and TRPM7-siRNA transfected group,the cells were enlarged in size with the lessened processes in comparison with the normal control group.Immunofluorescence staining showed that the actin fiber and vinculin increased in the Dex-treated group,and more spread but depolymerized actin fiber was seen in the TRPM7-siRNA transfected group.Compared with the normal control group,the fluorescence intensity of [Ca2×] i was weak in the Dex-treated group and TRPM7-siRNA transfected group.The relative expression levels of p-confilin protein was lower in the TRPM7-siRNA transfected group than that in the siRNA transfected group (0.317 ±0.031 vs.0.092±0.071) (t =5.030,P =0.007).Conclusions Dex induces the downregulation of TRPM7 expression in HTMs.The downregulation of TRPM7 probably participates in Dex-induced cytoskeletal remodeling by causing the depolymerization of actin cytoskeleton and reduction of [Ca2+] i in HTMs.
    • 刘丽玲; 徐建刚; 欧阳智琨; 杨扬帆; 吴开力; 余敏斌
    • 摘要: 目的探讨瞬时受体电位M7(TRPM7)在地塞米松诱导的小梁细胞骨架重塑中的作用。方法采用人小梁细胞株进行体外培养,第3~6代小梁细胞用于实验。采用免疫荧光检测技术对TRPM7在小梁细胞中的表达进行定位。在细胞培养基中加入0.2mg地塞米松处理小梁细胞4d,终浓度分别为1×10^-5、1×10^-6和1×10^-7mol/L,采用Western blot法检测细胞中TRPM7蛋白在细胞中的表达量。将培养的小梁细胞分为正常对照组、siRNA转染组、TRPM7-siRNA1转染组和TRPM7-siRNA2转染组,采用Western blot法检测细胞中TRPM7和p-cofilin相对蛋白表达量。将培养的细胞分为正常对照组、TRPM7-siRNA转染组、地塞米松处理组和TRPM7-siRNA转染+地塞米松组,采用免疫荧光技术法观察各组细胞中细胞骨架蛋白Phalloidin和黏着斑蛋白Vinculin的表达。将培养的细胞分为正常对照组、地塞米松处理组、siRNA转染组、TRPM7-siRNA转染组、TRPM7抑制剂2-APB处理组和钙离子螯合剂EGTA处理组,采用免疫荧光技术测定各组细胞内钙离子荧光强度变化。结果TRPM7主要分布于小梁细胞的细胞膜,TRPM7蛋白相对表达量随着地塞米松剂量的增加而逐渐下降,组间总体比较差异有统计学意义(F=4.210,P〈0.05),1×10^-4mol/L地塞米松组细胞中TRPM7蛋白表达量明显低于正常对照组,差异有统计学意义(P=0.011)。与正常对照组和siRNA转染组比较,TRPM7-siRNAl组和TRPM7-siRNA2组细胞中TRPM7蛋白相对表达量均明显降低,差异均有统计学意义(均P〈0.05)。倒置显微镜下可见地塞米松处理组和TRPM7-siRNA转染组细胞突起减少,细胞体稍变大。免疫荧光法显示地塞米松处理组小梁细胞骨架张力纤维和黏着斑蛋白增多,TRPM7-siRNA转染组细胞中张力纤维变少、变细。与正常对照组和siRNA转染组比较,地塞米松处理组和TRPM7-siRNA转染组细胞内钙离子荧光强度变弱。Westernblot检测显示,TRPM7-siRNA转染组细胞中p-confilin蛋白相对表达量明显低于siRNA转染组(0.317±0.031vs.0.092±0.071),差异有统计学意义(t=5.030,P=0.007)。结论高剂量地塞米松作用后可导致小梁细胞中TRPM7蛋白表达量下调,TRPM7蛋白下调可能通过使小梁细胞骨架微丝蛋白解聚和细胞内钙离子浓度的降低而参与地塞米松诱导的小梁细胞中细胞骨架的重塑。
    • 石璐; 汪昌运
    • 摘要: Objective To investigate the protection and mechanism of procyanidins (PC) against H2O2 induced oxidative damage of human trabecular meshwork cells (HTMC) in order to provide an experimental foundation for glaucoma clinical treatment.Methods HTMC were cultured and then divided randomly into 5 groups.As untreated group:Normal cultured HTMC;Control group:Normal cultured HTMC + H2O2 (500 μmol · L-1 for 1 hour);Treated group:Normal cultured HTMC + H2O2 (500 μmol ·L-1 for 1 hour) + PC (PC fmal concentrations were 0.02 g · L-1,0.05 g · L-1,0.10 g· L-1).Real-time fluorescence quantitative polymerase chain reaction (PCR) was used to investigate the expression of mitochondrial complex Ⅰ mRNA.Results Compared with untreated group (1.000 0 ± 0.000 0),the differences of mitochondrial complexⅠ mRNA expression in 0.02 g · L-1 PC (0.401 3 ±0.010 3),0.05 g · L-1 PC (0.791 5 ± 0.008 5) groups were statistically significant (all P < 0.01),but the 0.10 g ·L-1 PC group (1.043 0 ± 0.062 2) had no significant differences (P > 0.05).The differences between PC treated groups and control group were statistically significant (P <0.01),which showed HTMC treated with PC could increase the expression of mitochondrial complex Ⅰ mRNA.The differences in each PC treated groups were statistically significant (P < 0.01),which showed the expression of mitochondrial complex Ⅰ mRNA were increased along with the concentration of PC gradually increased.Conclusion Exogenetic PC can increase the expression of mitochondrial complex Ⅰ mRNA in the oxidative damaged HTMC,and in a certain range of concentration,the protective effects of PC have the positive relationship of dose-effect,which suggest that PC may be a good candidate for further study of the clinical treatment of glaucoma.%目的 研究原花青素(Procyanidins,PC)对H2O2诱导人眼小梁细胞(human trabecular meshwork cells,HTMC)氧化应激的抗氧化作用,为青光眼的临床治疗提供实验依据.方法 将正常HTMC进行细胞传代后随机分为5组.未处理组:正常培养的HTMC;对照组:正常培养的HTMC+ H2O2(500 μmol·L-1处理1h);PC组:正常培养的HTMC+ H2O2(500 μmol·L-1处理1h) +PC(浓度分别为0.02 g·L-1、0.05 g· L-1、0.10 g· L-1).应用实时荧光定量PCR方法检测线粒体复合物Ⅰ mRNA的表达.结果 与未处理组(1.000 0±0.000 0)相比,0.02 g· L-1 PC组(0.401 3±0.010 3)和0.05 g· L-1 PC组(0.791 5±0.008 5)线粒体复合物Ⅰ mRNA表达差异有统计学意义(均为P<0.01),而0.10g·L-1 PC组(1.043 0 ±0.062 2)差异无统计学意义(P>0.05);与对照组(0.095 0±0.006 5)相比,各PC处理组线粒体复合物Ⅰ mRNA表达均增加,差异均有统计学意义(均为P<0.01);不同浓度PC组间随PC浓度增加线粒体复合物Ⅰ mRNA表达增加,各PC浓度组组间差异有统计学意义(P<0.01).结论 外源性PC可以增加氧化应激HTMC线粒体复合物I mRNA的表达,有较强的抗氧化作用,并在一定范围内随着浓度的增加其抗氧化作用逐渐增强,PC在青光眼的临床治疗中的作用值得进一步研究.
    • 苏静1; 王强2; 刘玉震1
    • 摘要: 背景 研究证实莱菔硫烷(SFN)可以激活多条通路,促进机体内抗氧化蛋白的表达.硫氧还蛋白(Trx)是维持细胞内氧化还原稳态的重要抗氧化蛋白之一. 目的 研究SFN对体外培养的牛眼小梁细胞内Trx表达的影响及其机制.方法体外培养牛眼小梁细胞并进行形态学观察,取第3代培养的牛眼小梁细胞,分别加入终浓度为0、10、20和30 μmol/L SFN培养30 min,应用实时荧光定量PCR技术检测细胞内Trx mRNA的表达.将细胞按照随机抽样的方法分为6个组,即空白对照组、LY294002组、U0126组、SFN组、LY294002+ SFN组和U0126+SFN组.采用Western blot法检测各组细胞中Nrf2蛋白和Trx蛋白的相对表达量.结果 体外成功培养牛眼小梁细胞.不同浓度SFN干预下,细胞Trx mRNA相对表达量总体比较差异有统计学意义(F=88.090,P<0.01).LY294002+ SFN组、U0126+SFN组和SFN组细胞中Trx蛋白和Nrf2蛋白相对表达量显著高于空白对照组,差异均有统计学意义(均P<0.01).LY294002+ SFN组和U0126+SFN组细胞中Trx蛋白和Nrf2蛋白相对表达量显著高于SFN组,差异均有统计学意义(均P<0.01). 结论 SFN可通过磷脂酰肌醇-3激酶(PI3K)/蛋白激酶B(Akt)通路与丝裂原活化蛋白激酶(MAPK)/细胞外调节蛋白激酶1/2(ERK1/2)通路活化Nrf2,促进小梁细胞Trx mRNA及其蛋白的合成,保护细胞抵抗氧化应激损伤.
    • 苏静; 王强; 刘玉震
    • 摘要: 背景 研究证实莱菔硫烷(SFN)可以激活多条通路,促进机体内抗氧化蛋白的表达.硫氧还蛋白(Trx)是维持细胞内氧化还原稳态的重要抗氧化蛋白之一. 目的 研究SFN对体外培养的牛眼小梁细胞内Trx表达的影响及其机制.方法体外培养牛眼小梁细胞并进行形态学观察,取第3代培养的牛眼小梁细胞,分别加入终浓度为0、10、20和30 μmol/L SFN培养30 min,应用实时荧光定量PCR技术检测细胞内Trx mRNA的表达.将细胞按照随机抽样的方法分为6个组,即空白对照组、LY294002组、U0126组、SFN组、LY294002+ SFN组和U0126+SFN组.采用Western blot法检测各组细胞中Nrf2蛋白和Trx蛋白的相对表达量.结果 体外成功培养牛眼小梁细胞.不同浓度SFN干预下,细胞Trx mRNA相对表达量总体比较差异有统计学意义(F=88.090,P<0.01).LY294002+ SFN组、U0126+SFN组和SFN组细胞中Trx蛋白和Nrf2蛋白相对表达量显著高于空白对照组,差异均有统计学意义(均P<0.01).LY294002+ SFN组和U0126+SFN组细胞中Trx蛋白和Nrf2蛋白相对表达量显著高于SFN组,差异均有统计学意义(均P<0.01). 结论 SFN可通过磷脂酰肌醇-3激酶(PI3K)/蛋白激酶B(Akt)通路与丝裂原活化蛋白激酶(MAPK)/细胞外调节蛋白激酶1/2(ERK1/2)通路活化Nrf2,促进小梁细胞Trx mRNA及其蛋白的合成,保护细胞抵抗氧化应激损伤.%Background Recent studies have confirmed that sulforaphane (SFN) can activate multiple pathways,and promote the expression of the antioxidants in cells.Thioredoxin (Trx) plays an important role in maintaining the intracellular redox in the steady state.Objective This study was to investigate the effect and mechanism of SFN on Trx expression in bovine trabecular meshwork cells (BTMCs) cultured in vitro.Methods BTMCs were cultured in vitro and identified by morphological evaluation.The third generation of BTMCs were cultured in the medium with 0,10,20 and 30 μmol/L SFN for 30 minutes.Real-time PCR was applied to measure the expression of Trx mRNA in BTMCs.The BTMCs were randomly divided into normal control group,LY294002 group,U0126 group,SFN group,LY294002 +SFN group and U0126+SFN group.The expressions of Nrf2 protein and Trx protein in each group were measured by Western blot.Results The BTMCs was successfully cultured in vitro.The expressions of Trx mRNA were significantly different among the different concentrationss of SFN treatment (F=88.090,P<0.01).The expressions of Trx protein and Nrf2 protein in the LY294002 +SFN group,U0126 +SFN group and SFN group were significantly higher than those in the normal control group (all at P < 0.01).The expressions of Trx protein and Nrf2 protein in the LY294002+SFN group and U0126+SFN group were significantly higher than those in the SFN group (all at P<0.01).Conelusions SFN can activate Nrf2 by phosphatidylinositol-3-kinase (PI3K)/protein kinase B (Akt) and mitogen-activated protein kinase (MAPK)/extracellular regulated protein kinases 1/2 (ERK1/2) signaling pathways,which can increase the expression level of Trx in BTMCs cultured in vitro.
    • 王晶; 张广斌
    • 摘要: 目的 检测原发性开角型青光眼(Primary Open-angle Glaucoma,POAG)患者房水及小梁网组织中Gremlin的表达.方法 取20例POAG患者房水及小梁网组织标本,取18例单纯老年性白内障的房水及5例成年人尸眼的小梁网标本作为对照组.采用酶联免疫吸附法(ELISA)测定房水中Gremlin的含量,应用免疫组织化学方法检测小梁组织Gremlin的表达.结果 POAG患者房水中的Gremlin含量明显高于非POAG患者,差异具有统计学意义(P<0.05).POAG患者小梁细胞中Gremlin呈阳性表达,正常人的小梁网组织中Gremlin不表达.结论 POAG患者房水及小梁细胞中Gremlin表达明显增加,提示Gremlin在POAG发病中起重要作用.
    • 杜静; 刘苏
    • 摘要: 目的:研究地塞米松(DEX)对兔眼小梁内皮细胞(TM)和睫状体无色素上皮(NPCE)细胞水通道蛋白-1(AQP1)表达的影响。方法建立兔皮质类固醇性高眼压模型,用免疫组化和免疫荧光方法检测高眼压组与正常对照组AQP1表达水平的差异。结果实验组兔眼NPCE的AQP1表达比正常对照组增强(P<0.05),而在TM细胞则减弱(P<0.05)。结论地塞米松能使兔眼眼压升高,可能是通过抑制AQP1在TM的表达,并使NPCE的AQP1表达上调,这可能是皮质类固醇性青光眼的病理机制之一。%Objective To study the effects of dexamethasone (DEX) on expression of aquaporin-1 (AQP1) in rabbit eye’s trabecular meshwork (TM) and non-pigmented ciliary epithelium (NPCE) cells. Methods To establish a rabbit model of high intraocular pressure induced by corticosteroids, and to detect the difference of AQP1 expression between high intraocular pressure group and normal control group by immunohistochemistry and immunofluorescence method. Results The expression of AQP1 of NPCE in the experimental group was stronger than that in the normal control group (P<0.05), while the TM cells were decreased (P<0.05).Conclusion Dexamethasone can increase the intraocular pressure of the rabbit eyes, may be through inhibiting the expression of AQP1 in TM, and make AQP1 of NPCE expression up regulation, which may be one of the pathological mechanisms of corticosteroid glaucoma.
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