AIM:To identify early biomarkers associated with glaucomatous visual field(VF)progression in patients with normal-tension glaucoma(NTG).METHODS:This study included patients were divided into two groups based on diseas...AIM:To identify early biomarkers associated with glaucomatous visual field(VF)progression in patients with normal-tension glaucoma(NTG).METHODS:This study included patients were divided into two groups based on disease progression status.Tear samples were collected for proteomic analysis.Dataindependent acquisition(DIA)mass spectrometry combined with bioinformatic analyses was performed to identify and validate potential protein biomarkers for NTG progression.Additionally,differentially expressed proteins(DEPs)were evaluated using mediating effect models and receiver operating characteristic(ROC)curve analysis.RESULTS:A total of 19 patients(20 eyes)with NTG participated in this study,including 10 patients(4 males and 6 females;10 eyes)in the progression group with mean age of 67.70±9.03y and 10 patients(4 males and 6 females;10 eyes)in the non-progression group with mean age of 68.60±7.58y.A total of 158 significantly differentially expressed proteins were detected.UniProt database annotation identified 3 upregulated proteins and 12 downregulated proteins.Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway analysis showed that these DEPs were mainly enriched in pathways such as oocyte meiosis.Gene Ontology(GO)enrichment analysis revealed functional clusters related to cellular processes.Weighted gene coexpression network analysis(WGCNA)indicated that the core proteins were primarily involved in the neurodegenerationmultiple diseases pathway and cellular processes.Mediating effect analysis identified PRDX4(L)as a potential protein biomarker.ROC curve analysis showed that GNAI1 had the largest area under the curve(AUC=0.889).CONCLUSION:This study identifies 15 differentially expressed proteins in the tear fluid of NTG patients,including PRDX4(L).PRDX4(L)plays a key role in oxidative stress.展开更多
AIM： To investigate the change of anterior chamber angle morphology and intraocular pressure （lOP） reduction after cataract surgery in patients with normal-tension glaucoma （NTG） using swept-source optical cohere...AIM： To investigate the change of anterior chamber angle morphology and intraocular pressure （lOP） reduction after cataract surgery in patients with normal-tension glaucoma （NTG） using swept-source optical coherence tomography （SS-OCT）. METHODS： This prospective, comparative, observational study recruited patients into two groups. Group 1 was the control group including normal subjects except those with cataracts （cataract group, n=67 eyes of 67 patients）, and group 2 was NTG group including patients who were diagnosed with NTG and cataracts （n=43 eyes of 43 patients）, which were treated with phacoemulsification and intraocular lens implantation. Before surgery, and at postoperative 1 and 6too, anterior chamber angles were evaluated by SS-OCT under dark conditions using three- dimensional angle analysis scan protocol. Angle opening distance （AOD）, angle recess area （ARA）, and trabecular- iris surface area （TISA） at four quadrants （temporal, nasal, superior, and inferior） were calculated automatically by SS-OGT, after the observer marked scleral spurs. RESULTS： A total of 106 patients （54 males and 52 females） were enrolled in the study. Angle parameters, AOD, ARA, and TISA were increased after surgery in both groups. However, changes of angle parameters were only significant in group 2. In group 2, preoperative lOP was 13.2＋2.9 mm Hg, and postoperative lOP at 1 and 6mo were 10.5＋3.0 and 10.7＋2.8 mm Hg, respectively. In group 1, preoperative lOP was 12.42.8 mm Hg, and postoperative lOP at 1 and 6mo were 11.6＋2.5 and 12.0＋2.8 mm Hg, respectively. After cataract surgery, angle parameters changed significantly while IOP significantly reduced and was maintained in group 2 （P〈0.001）. The changes in angle parameters （＆AOD500, ATISAS00 at temporal; ＆AOD500, S, RA500 at nasal） were linearly correlated with postoperative IOP changes. CONCLUSION： Cataract surgery may have improved antedor chamber angle parameters and decreased lOP in NTG patients.展开更多
AIM:To explore the mechanical indices used for differential diagnosis and to investigate the relationship between ocular biomechanics and glaucoma severity within each group.METHODS:This cross-sectional study included...AIM:To explore the mechanical indices used for differential diagnosis and to investigate the relationship between ocular biomechanics and glaucoma severity within each group.METHODS:This cross-sectional study included 185 eyes from 185 subjects:62 normal controls,91 hightension glaucoma(HTG),and 32 normal-tension glaucoma(NTG)patients.All participants underwent a comprehensive ophthalmic examination that involved ocular biomechanical measurements.Glaucoma severity was assessed using visual field index(VFI),mean deviation(MD),pattern standard deviation(PSD)and retinal nerve fiber layer(RNFL)thickness.Multivariable models were used to compare fifteen biomechanical parameters among the three groups adjusting for age,gender,intraocular pressure(IOP),central corneal thickness(CCT),and axial length(AL).The generalized linear model was utilized for multifactor comparison.RESULTS:Significant differences in first applanation time(AT1),highest concavity time(HC time),stress strain index(SSI),and HC deflection were found among the three groups(P<0.05).AT1 was significantly higher in the HTG group compared to controls(P<0.05),and SSI was higher in HTG than NTG(P<0.05).HC deflection in the HTG group was significantly smaller than in NTG(P<0.05).Furthermore,AT1 levels were observed to be significantly higher in primary open angle glaucoma(POAG)patients compared to controls(P<0.05).Receiver operating charactristic(ROC)analysis showed HC deflection had an area under the curve(AUC)of 0.802 between HTG and NTG.A negatively significant correlation was observed between SSI and VFI in POAG patients.CONCLUSION:Biomechanical analysis reveals that corneas in POAG patients are stiffer than normal controls,with increased corneal stiffness correlating with more severe glaucomatous damage.Interestingly,stiffer corneas in NTG patients appeares protective.In addition,HC deflection may be useful for differentiating HTG and NTG.展开更多
目的利用静息态功能磁共振成像比率低频振幅(resting state f MRI-fractional amplitude of low frequency fluctuation,rsf MRI-f ALFF)研究正常眼压性青光眼(normal tension glaucoma,NTG)脑功能的改变,研究其与光学相干断层扫描(opti...目的利用静息态功能磁共振成像比率低频振幅(resting state f MRI-fractional amplitude of low frequency fluctuation,rsf MRI-f ALFF)研究正常眼压性青光眼(normal tension glaucoma,NTG)脑功能的改变,研究其与光学相干断层扫描(optical coherence tomography,OCT)及视野的相关性,探索NTG病理生理机制。方法选取NTG患者20例(NTG组),以及20名与NTG组在性别、年龄、受教育程度等相匹配的健康志愿者(正常对照组),完成全脑静息态功能磁共振扫描,获取被试全脑静息态数据,利用REST软件进行静息态数据预处理,对比NTG组与正常对照组全脑比率低频振幅(fractional amplitude of low frequency fluctuation,f ALFF)改变的脑区,检验f ALFF改变的脑区与患者OCT及视野的相关性。结果与正常对照组比较,NTG组右侧脑角回、右侧脑楔前叶的f ALFF值均显著减低(均为P<0.05),未发现f ALFF值增高的脑区;右侧脑角回、右侧脑楔前叶的f ALFF值与视网膜神经纤维层厚度均呈负相关(右侧脑角回:r=-0.607,P=0.010;右侧脑楔前叶:r=-0.504,P=0.020),而与C/D值均未见显著相关性(右侧脑角回:r=0.158,P=0.494;右侧脑楔前叶:r=-0.087,P=0.706);右侧脑角回、右侧脑楔前叶的f ALFF值与视野的平均变异值(右侧脑角回:r=0.096,P=0.468;右侧脑楔前叶:r=0.026,P=0.845)和模式标准差值(右侧脑角回:r=0.064,P=0.626;右侧脑楔前叶:r=-0.145,P=0.268)均无显著相关性。结论 NTG患者静息态多个脑区的功能紊乱可能参与NTG的发病,使之成为临床诊断NTG的可能补充手段,亦可作为评估NTG严重性方面的参考指标。展开更多
基金Supported by The Eye Hospital of Wenzhou Medical University(No.KYQD20220304)The Fifth Batch of Provincial Ten Thousand Personnel Program Outstanding Talents Funding(No.474092204)+1 种基金Innovative Talents and Teams(2024)-The Fifth Batch of Funding Funds for Scientific and Technological Innovation Leading Talents Under the Provincial Ten Thousand Personnel Program(No.4240924003G)The Key R&D Program of Zhejiang(No.2022C03112).
文摘AIM:To identify early biomarkers associated with glaucomatous visual field(VF)progression in patients with normal-tension glaucoma(NTG).METHODS:This study included patients were divided into two groups based on disease progression status.Tear samples were collected for proteomic analysis.Dataindependent acquisition(DIA)mass spectrometry combined with bioinformatic analyses was performed to identify and validate potential protein biomarkers for NTG progression.Additionally,differentially expressed proteins(DEPs)were evaluated using mediating effect models and receiver operating characteristic(ROC)curve analysis.RESULTS:A total of 19 patients(20 eyes)with NTG participated in this study,including 10 patients(4 males and 6 females;10 eyes)in the progression group with mean age of 67.70±9.03y and 10 patients(4 males and 6 females;10 eyes)in the non-progression group with mean age of 68.60±7.58y.A total of 158 significantly differentially expressed proteins were detected.UniProt database annotation identified 3 upregulated proteins and 12 downregulated proteins.Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway analysis showed that these DEPs were mainly enriched in pathways such as oocyte meiosis.Gene Ontology(GO)enrichment analysis revealed functional clusters related to cellular processes.Weighted gene coexpression network analysis(WGCNA)indicated that the core proteins were primarily involved in the neurodegenerationmultiple diseases pathway and cellular processes.Mediating effect analysis identified PRDX4(L)as a potential protein biomarker.ROC curve analysis showed that GNAI1 had the largest area under the curve(AUC=0.889).CONCLUSION:This study identifies 15 differentially expressed proteins in the tear fluid of NTG patients,including PRDX4(L).PRDX4(L)plays a key role in oxidative stress.
文摘AIM： To investigate the change of anterior chamber angle morphology and intraocular pressure （lOP） reduction after cataract surgery in patients with normal-tension glaucoma （NTG） using swept-source optical coherence tomography （SS-OCT）. METHODS： This prospective, comparative, observational study recruited patients into two groups. Group 1 was the control group including normal subjects except those with cataracts （cataract group, n=67 eyes of 67 patients）, and group 2 was NTG group including patients who were diagnosed with NTG and cataracts （n=43 eyes of 43 patients）, which were treated with phacoemulsification and intraocular lens implantation. Before surgery, and at postoperative 1 and 6too, anterior chamber angles were evaluated by SS-OCT under dark conditions using three- dimensional angle analysis scan protocol. Angle opening distance （AOD）, angle recess area （ARA）, and trabecular- iris surface area （TISA） at four quadrants （temporal, nasal, superior, and inferior） were calculated automatically by SS-OGT, after the observer marked scleral spurs. RESULTS： A total of 106 patients （54 males and 52 females） were enrolled in the study. Angle parameters, AOD, ARA, and TISA were increased after surgery in both groups. However, changes of angle parameters were only significant in group 2. In group 2, preoperative lOP was 13.2＋2.9 mm Hg, and postoperative lOP at 1 and 6mo were 10.5＋3.0 and 10.7＋2.8 mm Hg, respectively. In group 1, preoperative lOP was 12.42.8 mm Hg, and postoperative lOP at 1 and 6mo were 11.6＋2.5 and 12.0＋2.8 mm Hg, respectively. After cataract surgery, angle parameters changed significantly while IOP significantly reduced and was maintained in group 2 （P〈0.001）. The changes in angle parameters （＆AOD500, ATISAS00 at temporal; ＆AOD500, S, RA500 at nasal） were linearly correlated with postoperative IOP changes. CONCLUSION： Cataract surgery may have improved antedor chamber angle parameters and decreased lOP in NTG patients.
基金Supported by the Science&Technology Department of Sichuan Province(China)Funding Project(No.2021YFS0221,No.2023YFS0179)1.3.5 Project for Disciplines of ExcellenceWest China Hospital,Sichuan University(No.2022HXFH032,ZYJC21058,2021-023,2022-014).
文摘AIM:To explore the mechanical indices used for differential diagnosis and to investigate the relationship between ocular biomechanics and glaucoma severity within each group.METHODS:This cross-sectional study included 185 eyes from 185 subjects:62 normal controls,91 hightension glaucoma(HTG),and 32 normal-tension glaucoma(NTG)patients.All participants underwent a comprehensive ophthalmic examination that involved ocular biomechanical measurements.Glaucoma severity was assessed using visual field index(VFI),mean deviation(MD),pattern standard deviation(PSD)and retinal nerve fiber layer(RNFL)thickness.Multivariable models were used to compare fifteen biomechanical parameters among the three groups adjusting for age,gender,intraocular pressure(IOP),central corneal thickness(CCT),and axial length(AL).The generalized linear model was utilized for multifactor comparison.RESULTS:Significant differences in first applanation time(AT1),highest concavity time(HC time),stress strain index(SSI),and HC deflection were found among the three groups(P<0.05).AT1 was significantly higher in the HTG group compared to controls(P<0.05),and SSI was higher in HTG than NTG(P<0.05).HC deflection in the HTG group was significantly smaller than in NTG(P<0.05).Furthermore,AT1 levels were observed to be significantly higher in primary open angle glaucoma(POAG)patients compared to controls(P<0.05).Receiver operating charactristic(ROC)analysis showed HC deflection had an area under the curve(AUC)of 0.802 between HTG and NTG.A negatively significant correlation was observed between SSI and VFI in POAG patients.CONCLUSION:Biomechanical analysis reveals that corneas in POAG patients are stiffer than normal controls,with increased corneal stiffness correlating with more severe glaucomatous damage.Interestingly,stiffer corneas in NTG patients appeares protective.In addition,HC deflection may be useful for differentiating HTG and NTG.
文摘目的利用静息态功能磁共振成像比率低频振幅(resting state f MRI-fractional amplitude of low frequency fluctuation,rsf MRI-f ALFF)研究正常眼压性青光眼(normal tension glaucoma,NTG)脑功能的改变,研究其与光学相干断层扫描(optical coherence tomography,OCT)及视野的相关性,探索NTG病理生理机制。方法选取NTG患者20例(NTG组),以及20名与NTG组在性别、年龄、受教育程度等相匹配的健康志愿者(正常对照组),完成全脑静息态功能磁共振扫描,获取被试全脑静息态数据,利用REST软件进行静息态数据预处理,对比NTG组与正常对照组全脑比率低频振幅(fractional amplitude of low frequency fluctuation,f ALFF)改变的脑区,检验f ALFF改变的脑区与患者OCT及视野的相关性。结果与正常对照组比较,NTG组右侧脑角回、右侧脑楔前叶的f ALFF值均显著减低(均为P<0.05),未发现f ALFF值增高的脑区;右侧脑角回、右侧脑楔前叶的f ALFF值与视网膜神经纤维层厚度均呈负相关(右侧脑角回:r=-0.607,P=0.010;右侧脑楔前叶:r=-0.504,P=0.020),而与C/D值均未见显著相关性(右侧脑角回:r=0.158,P=0.494;右侧脑楔前叶:r=-0.087,P=0.706);右侧脑角回、右侧脑楔前叶的f ALFF值与视野的平均变异值(右侧脑角回:r=0.096,P=0.468;右侧脑楔前叶:r=0.026,P=0.845)和模式标准差值(右侧脑角回:r=0.064,P=0.626;右侧脑楔前叶:r=-0.145,P=0.268)均无显著相关性。结论 NTG患者静息态多个脑区的功能紊乱可能参与NTG的发病,使之成为临床诊断NTG的可能补充手段,亦可作为评估NTG严重性方面的参考指标。
