2型糖尿病患者糖尿病视网膜病变不同时期外周血内皮祖细胞的数量变化

目的 观察2型糖尿病患者糖尿病视网膜病变(DR)不同时期外周血内皮祖细胞(EPCs)的数量变化.方法 临床确诊为2型糖尿病的60例患者纳入研究.根据眼底及荧光素眼底血管造影(FFA)检查结果,将患者分为无视网膜病变(NDR)组、非增生型DR(NPDR)组及增生型DR(PDR)组,每组各20例.选择同期门诊体检正常者20名作为对照组.抽取所有受检者晨起空腹静脉血6 ml,采用流式细胞仪检测,并比较4组受检者外周血EPCs数量的变化情况.结果 对照组、NDR、NPDR及PDR组受检者外周血EPCs数量分别为(0.0179±0.0047)%、(0.0151±0.0086)%、(0.0123±0.1137)%、(0.0316±0.0294)%;PDR组受检者外周血EPCs数量较其他3组高,差异有统计学意义(x2=43.780,P＜0.05);NDR、NPDR组受检者外周血EPCs数量略低于对照组,差异无统计学意义(x2=5.244,P=0.73);NPDR组受检者外周血EPCs数量低于NDR组,但差异也无统计学意义(x2=6.016,P=0.12).结论 NDR、NPDR患者外周血EPCs数量降低,PDR患者外周血EPCs数量显著增高.

Abstract：

Objective To observe the amount of endothelial progenitor cells(EPCs)at different stages of diabetic retinopathy(DR)in patients with type 2 diabetes mellitus(DM).Methods Sixty patients with type 2 DM were divided into no DR(NDR)group,non-proliferative DR(NPDR)group and proliferative DR(PDR)group according to the examination of fundus and fundus fluorescein angiography,20patients in each group.Twenty healthy people were collected as the control group.6 ml blood samples were taken from all the subjects,and then the EPCs contents in peripheral blood were detected by flow cytometry.Results The EPCs contents in peripheral blood of the control,NDR,NPDR and PDR group were(0.0179±0.0047)% ,(0.0151±0.0086)% ,(0.0123±0.1137)% ,(0.0316±0.0294)% .The EPCs contents in peripheral blood of the PDR group was significantly higher than those in others(χ2=43.780,P＜0.05);the EPCs contents in peripheral blood of the NDR and NPDR group were slightly lower than that in the control group(χ2=5.244,P=0.73);the EPCs contents in peripheral blood of the NPDR group was lower than that in the NDR group(χ2=6.0 1 6,P=0.12).Conclusion The EPCs contents in peripheral blood decreases in NDR,NPDR patients,while significantly increases in PDR patients.     

2型糖尿病患者糖尿病视网膜病变不同时期外周血内皮祖细胞的数量变化

Objective To observe the amount of endothelial progenitor cells(EPCs)at different stages of diabetic retinopathy(DR)in patients with type 2 diabetes mellitus(DM).Methods Sixty patients with type 2 DM were divided into no DR(NDR)group,non-proliferative DR(NPDR)group and proliferative DR(PDR)group according to the examination of fundus and fundus fluorescein angiography,20patients in each group.Twenty healthy people were collected as the control group.6 ml blood samples were taken from all the subjects,and then the EPCs contents in peripheral blood were detected by flow cytometry.Results The EPCs contents in peripheral blood of the control,NDR,NPDR and PDR group were(0.0179±0.0047)% ,(0.0151±0.0086)% ,(0.0123±0.1137)% ,(0.0316±0.0294)% .The EPCs contents in peripheral blood of the PDR group was significantly higher than those in others(χ2=43.780,P＜0.05);the EPCs contents in peripheral blood of the NDR and NPDR group were slightly lower than that in the control group(χ2=5.244,P=0.73);the EPCs contents in peripheral blood of the NPDR group was lower than that in the NDR group(χ2=6.0 1 6,P=0.12).Conclusion The EPCs contents in peripheral blood decreases in NDR,NPDR patients,while significantly increases in PDR patients.     

2型糖尿病患者糖尿病视网膜病变不同时期外周血内皮祖细胞的数量变化

Objective To observe the amount of endothelial progenitor cells(EPCs)at different stages of diabetic retinopathy(DR)in patients with type 2 diabetes mellitus(DM).Methods Sixty patients with type 2 DM were divided into no DR(NDR)group,non-proliferative DR(NPDR)group and proliferative DR(PDR)group according to the examination of fundus and fundus fluorescein angiography,20patients in each group.Twenty healthy people were collected as the control group.6 ml blood samples were taken from all the subjects,and then the EPCs contents in peripheral blood were detected by flow cytometry.Results The EPCs contents in peripheral blood of the control,NDR,NPDR and PDR group were(0.0179±0.0047)% ,(0.0151±0.0086)% ,(0.0123±0.1137)% ,(0.0316±0.0294)% .The EPCs contents in peripheral blood of the PDR group was significantly higher than those in others(χ2=43.780,P＜0.05);the EPCs contents in peripheral blood of the NDR and NPDR group were slightly lower than that in the control group(χ2=5.244,P=0.73);the EPCs contents in peripheral blood of the NPDR group was lower than that in the NDR group(χ2=6.0 1 6,P=0.12).Conclusion The EPCs contents in peripheral blood decreases in NDR,NPDR patients,while significantly increases in PDR patients.     

糖尿病患者血糖控制相关因素与糖尿病视网膜病变发生的关系

目的 分析2型糖尿病(DM)患者血糖控制相关因素与糖尿病视网膜病变(DR)发生的关系.方法 对住院的412例DM患者DR筛查分期资料与患者病史资料糖化血红蛋白(HbAlC)、空腹和餐后1、2、3 h血糖、胰岛素、C肽检测结果和血糖、胰岛素、C肽波动值进行相关分析.结果 (1)DR及增生型DR(PDR)患病率随DM病程的延长明显增加;(2)非DR组、非PDR组及PDR组3组患者间年龄、DM病程、体质指数、高血压级别、HbAlC、餐后2、3 h血糖、餐后1、2、3 h血糖波动值、空腹胰岛素、餐后1、2 h胰岛素、餐后1、2、3 h胰岛素波动值、空腹C肽、餐后1、2、3 h C肽、餐后1、2、3 h C肽波动值比较,差异均有统计学意义(P＜0.05);(3)多因素Logistic回归分析显示,餐后3 h血糖、空腹胰岛素与DR发生在统计学上相关(P＜0.05).结论 餐后血糖和空腹胰岛素为DR发生的危险因素;餐后胰岛素、空腹及餐后C肽的检测和血糖、胰岛素及C肽餐后波动值能在一定程度上可作为DR是否发生的预测指标.

Abstract：

Objective To explore the related risk factors for diabetic retinopathy(DR)in type 2diabetes.Methods The clinical data of 412 type 2 diabetes patients,diagnosed between 2003 and 2010,were analyzed retrospectively.The diagnosis of DR and proliferative diabetic retinopathy(PDR)was confirmed by ophthalmoloseopy and fundus fluorescein angiography.Glycated hemoglobin Alc,glucose,insulin,and C-peptide of fasting plasma,and 1,2 and 3 hours postprandial plasma were measured.According to the above-mentioned data,get the fluctuation of glucose,insulin and C-peptide of 1,2 and 3hour postprandial plasma.Results The morbidity of DR and PDR increased following the longer disease duration.Age,diabetic duration,body mass index(BMI),hypertension grade,HbAlC,fasting plasma insulin and C-peptide,2 and 3 hours postprandial plasma glucose,1 and 2 hours postprandial plasma insulin,1,2 and 3 hour postprandial plasma C-peptide,1,2 and 3 hours postprandial plasma glucose,insulin and C-peptide fluctuation are different statistically among non-DR group,non-PDR group and PDR group(P＜0.05).3 hours postprandial plasma glucose and fasting plasma insulin were risk factors of DR (P＜0.05).Conclusions Postprandial plasma glucose and fasting plasma insulin were risk factors of DR.Nevertheless,postprandial insulin,fasting and postprandial C-peptide,postprandial plasma glucose,insulin and C-peptide fluctuation were useful for DR diagnosis.     

2型糖尿病并发视网膜病变患者血清脂联素和超敏C-反应蛋白浓度的变化

目的:探讨2型糖尿病并发视网膜病变(diabetic retinopathy,DR)患者血清脂联素和超敏C-反应蛋白(high sensitivity C-reactive protein,hs-CRP)浓度的变化。方法:病例对照研究。采用酶联免疫吸附法和速率散射比浊法检测49例非糖尿病视网膜病变(NDR)的糖尿病患者,46例非增生性糖尿病视网膜病变(NPDR)组患者,41例增生性糖尿病视网膜病变(PDR)组患者以及45例对照组受检者血清脂联素和超敏C-反应蛋白(hs-CRP)浓度的变化,采用单因素设计的定量资料的方差分析,多个均数之间两两比较采用q检验,相关分析采用直线相关分析。结果:NDR组患者血清脂联素浓度8.76±3.61mg/L,hs-CRP浓度3.12±1.24mg/L;NPDR组患者血清脂联素浓度6.22±2.53mg/L,hs-CRP浓度4.89±1.66mg/L;PDR组患者血清脂联素浓度3.98±1.86mg/L,hs-CRP浓度6.95±2.59mg/L;对照组血清脂联素浓度13.55±5.87mg/L,hs-CRP浓度2.01±0.85mg/L。正常对照组与NDR组、NDR组与NPDR组、NPDR组与PDR组的血清脂联素比较,差异有统计学意义(q=5.4401,P=0.000;q=3.1535,P=0.002;q=4.8756,P=0.000)。正常对照组与NDR组、NDR组与NPDR组、NPDR组与PDR组血清hs-CRP浓度比较,差异具有统计学意义(q=2.4367,P=0.0017;q=2.0572,P=0.003;q=2.6184,P=0.001)。DR患者血清hs-CRP与血清脂联素水平呈负相关(r=-0.643,P<0.01)。结论:DR患者血清脂联素浓度水平与血清hs-CRP浓度水平存在显著负相关,血清脂联素浓度水平下降,伴随着血清hs-CRP浓度水平的升高,且与糖尿病视网膜病变的严重程度相关。     

糖尿病视网膜病变细胞因子及视网膜血流变化的意义

目的:探讨VEGF、细胞因子及视网膜血流状态与糖尿病视网膜病变(DR)的相关性.方法:将174例糖尿病患者根据视网膜病变情况分为无DR组(NDR,41例)、背景DR(NPDR,68例)及增殖期DR组(PDR,65例)三组,纳入健康志愿者30例作为对照组.对所有受试者血清VEGF、肿瘤坏死因子-α(TNF-α)、可溶性细胞间黏附分子-1(sICAM-1)、可溶性血管细胞黏附分子-1(sVCAM-1)及碱性成纤维细胞生长因子(bFGF)水平进行测定,并对其进行眼部彩色多普勒超声检查,测量视网膜中央动脉的各项血流动力学参数.结果:糖尿病患者血清VEGF,TNF-α,sICAM-1,sVCAM-1,bFGF水平显著高于对照组;PDR血清VEGF,TNF-α,sICAM-1,sVCAM-1,bFGF水平显著高于NDR和NPDR组,NPDR组血清VEGF,TNF-α,sICAM-1,sVCAM-1,bFGF水平又显著高于NDR(P＜0.05).糖尿病患者Vmax,Vmin,Vmean和PI显著低于对照组,RI显著高于对照组;PDR组Vmax,Vmin,Vmean和PI显著低于NDR和NPDR组,RI显著高于NDR和NPDR组;NPDR组Vmax,Vmin,Vmean和PI又显著低于NDR,RI则显著低于NDR和NPDR组(P＜0.05).结论:VEGF,TNF-α,sICAM-1,sVCAM-1,bFGF以及CRA血流动力学改变与DR的发生发展密切相关,在DR诊断和治疗中具有参考意义.     

晶状体内糖基化终末产物含量与糖尿病视网膜病变程度的关联分析

背景 糖基化终末产物(AGEs)在晶状体中沉积是糖尿病并发症发生的危险因素,研究发现AGEs与晶状体自发荧光有关,且晶状体蛋白为长寿蛋白,其中AGEs的蓄积与糖尿病视网膜病变(DR)程度的关系值得研究. 目的 探讨并分析晶状体中AGEs自发荧光强度变化是否对糖尿病严重程度有预测作用. 方法 采用横断面研究设计,对2015年9-12月在沈阳何氏眼科医院就诊的白内障患者100例100眼进行分析,按照患者有无糖尿病分为非糖尿病组40例40眼和糖尿病组60例60眼,糖尿病组患者再根据眼部并发症情况分为非DR组(NDR组)、非增生期DR组(NPDR组)和增生期DR组(PDR组),每个亚组均为20例20眼.所有患者均评估接受血浆糖化血红蛋白(HbA1c)和餐前血糖(FBG)测定,并采用晶状体荧光显微镜(Clearpath DS120)测定受检眼晶状体自发荧光强度,分析糖尿病患者晶状体自发荧光强度值与HbA1c水平和糖尿病程度的关系.结果 非糖尿病组、NDR组、NPDR组和PDR组间年龄和糖尿病病程总体比较差异均无统计学意义(F=2.587、2.899,均P＞0.05);NDR组、NPDR组和PDR组患者FBG和HbA1c水平均明显高于非糖尿病组,差异均有统计学意义(均P＜0.01).非糖尿病组、NDR组、NPDR组和PDR组受检眼晶状体自发荧光强度值分别为(0.159±0.032)、(0.256±0.024)、(0.319±0.013)和(0.394±0.035) cd,总体比较差异有统计学意义(F=90.265,P=0.000),其中NDR组、NPDR组和PDR组晶状体自发荧光强度值均明显高于非糖尿病组,且NDR组、NPDR组和PDR组随着病情的加重晶状体自发荧光强度值逐渐增加,差异均有统计学意义(均P＜0.01).糖尿病患者晶状体自发荧光强度值与血HbA1c水平呈中等线性正相关(r=0.654,P＜0.05).结论 糖尿病患者晶状体自发荧光强度值与DR严重程度和血HbA1c水平均有一定关联,在一定条件下可作为DR早期评估的指标之一.     

糖尿病患者血糖控制相关因素与糖尿病视网膜病变发生的关系

Objective To explore the related risk factors for diabetic retinopathy(DR)in type 2diabetes.Methods The clinical data of 412 type 2 diabetes patients,diagnosed between 2003 and 2010,were analyzed retrospectively.The diagnosis of DR and proliferative diabetic retinopathy(PDR)was confirmed by ophthalmoloseopy and fundus fluorescein angiography.Glycated hemoglobin Alc,glucose,insulin,and C-peptide of fasting plasma,and 1,2 and 3 hours postprandial plasma were measured.According to the above-mentioned data,get the fluctuation of glucose,insulin and C-peptide of 1,2 and 3hour postprandial plasma.Results The morbidity of DR and PDR increased following the longer disease duration.Age,diabetic duration,body mass index(BMI),hypertension grade,HbAlC,fasting plasma insulin and C-peptide,2 and 3 hours postprandial plasma glucose,1 and 2 hours postprandial plasma insulin,1,2 and 3 hour postprandial plasma C-peptide,1,2 and 3 hours postprandial plasma glucose,insulin and C-peptide fluctuation are different statistically among non-DR group,non-PDR group and PDR group(P＜0.05).3 hours postprandial plasma glucose and fasting plasma insulin were risk factors of DR (P＜0.05).Conclusions Postprandial plasma glucose and fasting plasma insulin were risk factors of DR.Nevertheless,postprandial insulin,fasting and postprandial C-peptide,postprandial plasma glucose,insulin and C-peptide fluctuation were useful for DR diagnosis.     

糖尿病患者血糖控制相关因素与糖尿病视网膜病变发生的关系

Objective To explore the related risk factors for diabetic retinopathy(DR)in type 2diabetes.Methods The clinical data of 412 type 2 diabetes patients,diagnosed between 2003 and 2010,were analyzed retrospectively.The diagnosis of DR and proliferative diabetic retinopathy(PDR)was confirmed by ophthalmoloseopy and fundus fluorescein angiography.Glycated hemoglobin Alc,glucose,insulin,and C-peptide of fasting plasma,and 1,2 and 3 hours postprandial plasma were measured.According to the above-mentioned data,get the fluctuation of glucose,insulin and C-peptide of 1,2 and 3hour postprandial plasma.Results The morbidity of DR and PDR increased following the longer disease duration.Age,diabetic duration,body mass index(BMI),hypertension grade,HbAlC,fasting plasma insulin and C-peptide,2 and 3 hours postprandial plasma glucose,1 and 2 hours postprandial plasma insulin,1,2 and 3 hour postprandial plasma C-peptide,1,2 and 3 hours postprandial plasma glucose,insulin and C-peptide fluctuation are different statistically among non-DR group,non-PDR group and PDR group(P＜0.05).3 hours postprandial plasma glucose and fasting plasma insulin were risk factors of DR (P＜0.05).Conclusions Postprandial plasma glucose and fasting plasma insulin were risk factors of DR.Nevertheless,postprandial insulin,fasting and postprandial C-peptide,postprandial plasma glucose,insulin and C-peptide fluctuation were useful for DR diagnosis.     

Systemic immune-inflammation index, neutrophil-to-lymphocyte ratio, and platelet-to-lymphocyte ratio in patients with type 2 diabetes at different stages of diabetic retinopathy

AIM: To investigate systemic immune-inflammation index (SII), neutrophil-to-lymphocyte ratio (NLR), and platelet-to-lymphocyte ratio (PLR) levels in patients with type 2 diabetes at different stages of diabetic retinopathy (DR). METHODS: This retrospective study included 141 patients with type 2 diabetes mellitus (DM): 45 without diabetic retinopathy (NDR), 47 with non-proliferative diabetic retinopathy (NPDR), and 49 with proliferative diabetic retinopathy (PDR). Complete blood counts were obtained, and NLR, PLR, and SII were calculated. The study analysed the ability of inflammatory markers to predict DR using receiver operating characteristic (ROC) curves. The relationships between DR stages and SII, PLR, and NLP were assessed using multivariate logistic regression. RESULTS: The average NLR, PLR, and SII were higher in the PDR group than in the NPDR group (P=0.011, 0.043, 0.009, respectively); higher in the NPDR group than in the NDR group (P<0.001 for all); and higher in the PDR group than in the NDR group (P<0.001 for all). In the ROC curve analysis, the NLR, PLR, and SII were significant predictors of DR (P<0.001 for all). The highest area under the curve (AUC) was for the PLR (0.929 for PLR, 0.925 for SII, and 0.821 for NLR). Multivariate regression analysis indicated that NLR, PLR, and SII were statistically significantly positive and independent predictors for the DR stages in patients with DM [odds ratio (OR)=1.122, 95% confidence interval (CI): 0.200–2.043, P<0.05; OR=0.038, 95%CI: 0.018–0.058, P<0.05; OR=0.007, 95%CI: 0.001–0.01, P<0.05, respectively). CONCLUSION: The NLR, PLR, and SII may be used as predictors of DR.     

血清可溶性肿瘤坏死因子受体与2型糖尿病视网膜病变相关性研究

目的　研究血清可溶性肿瘤坏死因子受体（ｓｏｌｕｂｌｅｔｕｍｏｒｎｅｃｒｏｓｉｓｆａｃｔｏｒｒｅｃｅｐｔｏｒ,ｓＴＮＦＲ）与２型糖尿病视网膜病变的相关性。方法　６６例２型糖尿病患者通过眼底检查和眼底荧光血管造影按照ＥＤＴＲＳ分期分为３组:无糖尿病视网膜病变（ｎｏｄｉａｂｅｔｉｃｒｅｔｉｎｏｐａｔｈｙ,ＮＤＲ;ｎ＝２２）组、非增殖型糖尿病视网膜病变（ｎｏｎｐｒｏｌｉｆｅｒａｔｉｖｅｄｉａｂｅｔｉｃｒｅｔｉｎｏｐａｔｈｙ,ＮＰＤＲ;ｎ＝２４）组和增殖型糖尿病视网膜病变（ｐｒｏｌｉｆｅｒａｔｉｖｅｄｉａｂｅｔｉｃｒｅｔｉｎｏｐａｔｈｙ,ＰＤＲ;ｎ＝２０）组。２１名健康人作为对照组。检测４组研究对象血清中肿瘤坏死因子（ｔｕｍｏｒｎｅｃｒｏｓｉｓｆａｃｔｏｒ,ＴＮＦ）-α、ｓＴＮＦＲ-１、ｓＴＮＦＲ-２水平。组间统计分析采用非参数Ｍａｎｎ-ＷｈｉｔｎｅｙＵ检验。结果　血清中ＴＮＦ-α中位数分别为:对照组０ｐｇ·ｍＬ－１、ＮＤＲ组３．４５ｐｇ·ｍＬ－１、ＮＰＤＲ组３．９２ｐｇ·ｍＬ－１、ＰＤＲ组８．１２ｐｇ·ｍＬ－１。对照组与ＰＤＲ组（Ｐ＜０．００１）、ＮＤＲ组与ＰＤＲ组（Ｐ＝０．００８）比较差异均有统计学意义。血清中ｓＴＮＦＲ-１水平中位数:对照组１．５０ｎｇ·ｍＬ－１、ＮＤＲ组１．８８ｎｇ·ｍＬ－１、ＮＰＤＲ组２．５８ｎｇ·ｍＬ－１、ＰＤＲ组３．００ｎｇ·ｍＬ－１。对照组与ＮＰＤＲ组（Ｐ＜０．００１）、对照组与ＰＤＲ组（Ｐ＜０．００１）、ＮＤＲ组与ＮＰＤＲ组（Ｐ＝０．００７）、ＮＤＲ组与ＰＤＲ组（Ｐ＜０．００１）比较,差异均有统计学意义。血清中ｓＴ-ＮＦＲ-２中位数分别为:对照组３．８８ｎｇ·ｍＬ－１、ＮＤＲ组５．０１ｎｇ·ｍＬ－１、ＮＰＤＲ组５．２１ｎｇ·ｍＬ－１、ＰＤＲ组６．３３ｎｇ·ｍＬ－１。除了ＮＤＲ组与ＮＰＤＲ组（Ｐ＝０．０７０）间差异无统计学意义外,其他组间差异均有统计学意义（均为Ｐ＜０．０５）。结论　血清中ｓＴＮＦＲ与２型糖尿病视网膜病变密切相关,表明ｓＴＮＦＲ在糖尿病视网膜病变的发生发展中起到了一定的作用。对ｓＴＮＦＲ进行进一步研究可以寻找治疗糖尿病视网膜病变新的靶点。     

2型糖尿病患者DR不同时期血浆钙卫蛋白水平的检测和比较

背景 糖尿病视网膜病变(DR)时视网膜血管的中性粒细胞浸润,造成血管内皮损伤.钙卫蛋白主要存在于中性粒细胞溶酶体外的细胞质中,通过促进中性粒细胞的聚集参与血管损伤的生物学行为,是一种潜在的临床炎症标志物.钙卫蛋白在DR进展过程中的作用尚不清楚. 目的 探讨钙卫蛋白在2型糖尿病患者DR不同时期的表达差异及其在DR发生发展过程中的可能作用. 方法 本研究为病例对照研究.临床确诊为2型糖尿病的患者60例纳入研究,根据检眼镜下眼底表现和荧光素眼底血管造影( FFA)检查结果将患者分为无DR组(20例)、非增生型糖尿病视网膜病变(NPDR)组(20例)和PDR组(20例),并纳入门诊体检的20例健康者为对照组,对照组与2型糖尿病组受检者的年龄、性别及血液生化检测指标结果相匹配.于清晨抽取受试者空腹静脉血2 ml,ELISA法测定各组受检者血浆钙卫蛋白的质量浓度. 结果 对照组、无DR组、NPDR组和PDR组受检者外周血浆中钙卫蛋白的质量浓度分别为(57.70±12.29)、(72.07±10.14)、(87.70±10.37)、(94.36±9.40)ng/L,4个组间的总体差异有统计学意义(F=73.09,P＜0.01).PDR组受检者外周血钙卫蛋白的质量浓度最高,与其他3个组间的两两比较差异均有统计学意义(q =20.157、10.648、4.497,P＜0.01);NPDR组受检者外周血钙卫蛋白的质量浓度高于无DR组,差异有统计学意义(q=6.216,P＜0.01).结论 血浆钙卫蛋白质量浓度的变化可能在2型糖尿病患者DR的发生发展过程中起一定作用.     

糖尿病视网膜病变患者血清β2-糖蛋白Ⅰ的表达

目的探讨血清β2-糖蛋白Ⅰ(beta2-glycoproteinⅠ,β2-GPⅠ)在不同时期糖尿病视网膜病变(diabetic retinopathy,DR)患者中的变化,了解血清β2-GPⅠ与DR的关系。方法收集60例2型糖尿病患者血清标本,将其分为3组:20例无明显DR(no-DR,NDR)患者为NDR组;20例非增生性DR(non-proliferative DR,NPDR)患者为NPDR组;20例增生性DR(proliferative DR,PDR)患者为PDR组。同时收集20例健康人血清为正常对照(normal control,NC)组。应用Westernblot方法,对各组随机抽取的4份血清样本中β2-GPⅠ水平进行分析。结果β2-GPⅠ水平在NPDR组、PDR组大量表达,在NDR组中量表达,在NC组少量表达。NC组、NDR组、NPDR组和PDR组各条带面积平均光密度值,分别为(440564.9±66597.4)mm-2、(655561.6±85640.8)mm-2、(859969.7±85461.0)mm-2、(954887.4±125764.4)mm-2。与NC组比较,β2-GPⅠ水平在NDR组、NPDR组、PDR组显著升高,差异均有统计学意义(均为P<0.01);与NDR组比较,β2-GPⅠ水平在NPDR组、PDR组显著升高,差异均有统计学意义(均为P<0.01);与NPDR组比较,PDR组无明显升高,差异无统计学意义(P>0.05)。结论在DR发生过程中,血清β2-GPⅠ水平上调,β2-GPⅠ可能具有潜在的早期诊断DR的价值。     

晶状体糖基化终末产物与糖尿病视网膜病变的关系

背景 晚期糖基化终末产物(AGEs)的产生是糖尿病(DM)的重要特征之一,其在DM相关眼病中的表达及其意义仍有待研究. 目的 探讨DM性与非DM(NDM)性白内障患者晶状体中AGEs含量的变化,研究其与糖尿病视网膜病变(DR)程度之间的关系.方法 采用病例对照研究方法,于2014年8-12月从在沈阳何氏眼科医院行超声乳化手术的白内障患者中获取40例40眼的晶状体核,核硬度为Ⅲ-Ⅳ级(Emery分级方法).按照患者是否患有DM分为NDM组(10例)和DM组(30例),然后依据糖尿病视网膜病变国际临床标准将DM组分为无DR(NDR)组、非增生期DR(NPDR)组和增生期DR (PDR)组,每个组均为10例.采用ELISA法对各组患者晶状体中AGEs成分进行定量检测和比较. 结果 NDR组、NPDR组和PDR组患者晶状体中戊糖苷素质量浓度分别为(31.90±5.00)、(35.83±4.22)和(38.59±5.11) pg/ml,CML质量浓度分别为(18.82±3.84)、(19.65±2.12)和(23.77±4.73) μg/L,咪唑酮质量浓度分别为(13.12±2.71)、(14.48±2.01)和(15.37±2.74) pg/ml,均明显高于NDM组的(27.69±1.53) pg/ml、(11.36±1.47)μg/L和(10.21±0.54) pg/ml,差异均有统计学意义(均P＜0.01),PDR组患者晶状体中戊糖苷素和羧甲基赖氨酸(CML)质量浓度均明显高于NDR组,差异均有统计学意义(均P＜0.05),而NDR组、NPDR组和PDR组间晶状体中咪唑酮质量浓度的差异均无统计学意义(均P＞0.05).受检患者晶状体核中CML质量浓度与戊糖苷素质量浓度间、CML质量浓度与咪唑酮质量浓度间和戊糖苷素质量浓度与咪唑酮质量浓度间均呈中等正相关(r=0.623、0.717、0.669,均P=0.000). 结论 DM组晶状体中戊糖苷素、CML、咪唑酮含量显著高于NDM组.晶状体AGEs的水平或可作为评估DR程度的指标.     

糖尿病视网膜病变严重程度与角膜上皮基底神经丛变化间的相关性

目的：探讨糖尿病视网膜病变(DR)严重程度与角膜上皮基底神经丛(SNP)变化间的相关性。

方法：研究纳入我院2018-01/2021-05收治2型糖尿病(T2DM)患者132例132眼和年龄相关性白内障患者80例80眼,其中T2DM患者中包括非DR(NDR)患者52例52眼,非增生性DR(NPDR)患者40例40眼及增生性DR(PDR)患者40例40眼,分析一般资料和角膜激光扫描共焦显微镜检查资料,采用Spearman秩相关分析评价DR临床分期与神经纤维长度间相关性。

结果：四组性别和年龄比较均无差异(P>0.05); PDR组糖尿病病程显著长于NPDR组、NDR组(P<0.05); NPDR组糖尿病病程显著长于NDR组(P<0.05); 年龄相关性白内障组空腹血糖和糖化血红蛋白水平均显著低于其他三组(P<0.05); PDR组最佳矫正视力显著低于NPDR组、NDR组(均P<0.05); NPDR组最佳矫正视力显著低于NDR组(P<0.05); 年龄相关性白内障组神经纤维长度值均显著大于NDR组、NPDR组及PDR组(P<0.05); PDR组神经纤维长度值显著小于NPDR组(P<0.05); Spearman秩相关分析结果显示,DR分期与神经纤维长度间呈负相关(r_s=-0.347,P<0.001)。

结论：DR病情严重程度与角膜上皮基底神经丛变化间具有相关性,PDR患者神经纤维长度较NPDR显著缩短; PDR和NPDR均存在神经结构缺失,T2DM眼底病变治疗时注意对眼表病变情况评估及处理。     

αB-晶状体蛋白在糖尿病视网膜病变患者晶状体上皮细胞中的表达

目的　探究糖尿病视网膜病变（DR）患者晶状体上皮细胞（LEC）中αB-晶状体蛋白的表达及其与DR发生发展的关系。方法　选取东南大学附属中大医院眼科2018年5月至2019年4月收治的年龄相关性白内障和糖尿病并发性白内障患者98例（98眼）,根据血糖及眼底检查将其分为非糖尿病（NDM）组、非糖尿病视网膜病变（NDR）组、非增生型糖尿病视网膜病变（NPDR）组和增生型糖尿病视网膜病变（PDR）组,均进行超声乳化白内障吸除联合人工晶状体植入术,分别收集四组患者晶状体前囊膜,采用免疫荧光染色检测、Western blot检测患者LEC中αB-晶状体蛋白的分布及表达水平。结果　αB-晶状体蛋白在LEC细胞核及细胞质中均有表达。免疫荧光染色结果显示,NDM组、NDR组、NPDR组、PDR组患者LEC中αB-晶状体蛋白的阳性表达率逐渐增高（P<0.001）;与NDM组相比,NPDR组、PDR组患者LEC中αB-晶状体蛋白的阳性表达率均显著升高,差异均有统计学意义（均为P<0.05）;PDR组患者LEC中αB-晶状体蛋白的阳性表达率高于NDR组,差异有统计学意义（P<0.05）;余组间两两比较差异均无统计学意义（均为P>0.05）。Western blot检测结果显示,NDM组、NDR组、NPDR组和PDR组患者LEC中αB-晶状体蛋白的相对表达量分别为2.02±0.83、2.30±0.79、3.94±1.15和 5.69±1.23,四组患者间差异有统计学意义（P<0.01);NDR组患者与NDM组患者LEC中αB-晶状体蛋白相对表达量差异无统计学意义（P>0.05）; NPDR组患者LEC中αB-晶状体蛋白相对表达量均明显高于NDM、NDR组,差异均有统计学意义（均为P<0.05）;而PDR组患者LEC中αB-晶状体蛋白相对表达量均高于其余三组,差异均有统计学意义（均为P<0.05）。结论　LEC中αB-晶状体蛋白的表达水平与DR的发生发展正相关。αB-晶状体蛋白可能通过参与眼内新生血管的形成,对DR的发生发展起促进作用。     

频域相干光断层扫描对糖尿病黄斑区厚度的应用研究

目的 利用频域相干光断层扫描(OCT)测量并分析糖尿病( DM)患者的黄斑区视网膜厚度.方法 DM组90例(90只眼),并分为分无糖尿病视网膜病变(NDR) 、非增殖期(NPDR) 及增殖期(PDR) 病变3组,每组各30例(30只眼),正常对照组30例(30只眼).分别行最佳矫正视力(BCVA)、裂隙灯、眼底彩照、荧...     

血清血小板内皮细胞黏附分子-1水平变化对糖尿病视网膜病变的影响

背景研究糖尿病视网膜病变（DR）发生发展的相关危险因素对DR的预防有重要意义,血小板内皮细胞黏附分子-1（PECAM-1）是介导糖尿病患者血管病变发生的重要介质,但其作用机制仍有待进一步研究。目的探讨2型糖尿病患者血清中PECAM-1水平变化对DR发生及发展的影响。方法收集在南通市第三人民医院内分泌科确诊的2型糖尿病患者共54例,根据检眼镜检查和荧光素眼底血管造影（FFA）结果,依据1987年中华医学会DR分期标准将患者分为无DR（NDR）组18例、非增生型糖尿病视网膜病变（NPDR）组20例和增生型糖尿病视网膜病变（PDR）组16例,并收集年龄和性别与患者相匹配的18名健康体检者作为正常对照组。收集患者外周血,用ELISA法检测患者血清中PECAM一1的质量浓度;用高效液相色谱法检测患者血清中糖化血红蛋白（HbAlC）含量;采用全自动生化分析仪检测患者的血糖水平;探讨DR患者PECAM—l质量浓度与HbAlC含量的关系,并将各组患者的检测结果进行比较。结果PDR组、NPDR组、NDR组和正常对照组患者血清中PECAM-1质量浓度分别为（10．907-4-2．792）、（7．024±2．377）、（5．231±1．816）和（3．817±1．045）μg／L,总体差异有统计学意义（F=12．630,P=0．002）,PDR组患者血清PECAM—l质量浓度明显高于NPDR组、NDR组和正常对照组,差异均有统计学意义（P〈0．05）。PDR组、NPDR组、NDR组和正常对照组患者血清HbAlC水平分别为（12．596±3．148）％、（9．118±3．356）％、（5．491±1．017）％和（4．992＋-0．725）％,总体比较差异有统计学意义（F=7．130,P=0．015）,PDR组、NPDR组患者血清HbAlc水平显著高于NDR组和正常对照组,PDR组PECAM一1和HbAlc水平明显高于NPDR组和正常对照组,差异均有统计学意义（P〈0．05）。PDR组、NPDR组、NDR组患者血清PECAM-1质量浓度与血清HbAlc水平间均呈显著正相关（r=0．799,P〈0．01;r=0．647,P〈0．01;r=0．685,P〈0．01）。病程≥10年的PDR组与NPDR组糖尿病病程比较差异有统计学意义（P=0．023）。结论PECAM一1高表达是促进DR发生和发展的重要因素,与患者的高血糖状态密切相关,预防DR应以治疗糖尿病、控制血糖为主。