IL-8与糖尿病视网膜病变

糖尿病视网膜病变(diabetic retinopathy,DR)是最常见的糖尿病微血管并发症之一,然而其具体机制尚不清楚。现在炎症反应作为DR发病机制之一而被越来越多的学者关注,并提出DR是一种炎症性疾病。我们就炎症因子IL-8的特征及其在DR发生发展过程中的作用加以综述。     

VEGF、IL-6的水平与糖尿病视网膜病变关系的研究

目的:检测2型糖尿病患者眼房水中血管内皮生长因子(Vascular endothelial growth factor,VEGF)和白细胞介素-6(Interleukin-6,IL-6)的含量,并探讨其临床意义.方法:在白内障手术过程中获取66例2型糖尿病患者的房水,采用双抗体夹心酶联免疫吸附(ELISA)法测定VEGF和IL-6的含量.根据手术后散瞳眼底检查和眼底荧光素血管造影检查确定糖尿病视网膜病变的分期.实验组分为:无糖尿病视网膜病变组(NDR)21例、单纯型糖尿病性视网膜病变组(BDR)26例、增生型糖尿病性视网膜病变组(PDR)19例,正常对照组为健康的老年性白内障患者20例.结果:NDR组、BDR组、PDR组的房水VEGF含量分别为(240.30±26.15)pg/ml、(292.27±58.91)pg/ml、(477.41±91.01)pg/ml,IL-6含量分别为(160.83±33.41)pg/ml、(238.60±62.23)pg/ml、(389.13±90.35)pg/ml,对照组房水VEGF含量为(140.58±26.27)pg/ml、IL-6含量为(82.72±21.53)pg/ml,对照组与实验组比较差异均有统计学意义(F=113.67,P＜0.01;F=106.53,P＜0.01).实验组房水中的VEGF与IL-6含量有相关性(r=0.995,P＜0.01);糖尿病患者的病程与房水中VEGF(r=0.792,0.826,0.841均P＜0.01)、IL-6(r=0.829,0.817,0.896均P＜0.01)含量有相关性.结论:VEGF、IL-6在糖尿病视网膜病变的形成过程中有重要作用,且两者之间有相关性.     

OCTA在无视网膜病变的糖尿病患者中应用的Meta分析

目的:采用Meta分析方法评价光学相干断层扫描血管成像(OCTA)在无视网膜病变的糖尿病(NDR)患者中的应用。方法:计算机检索CNKI、WanFang Data、VIP、CBM、PubMed、Embase数据库以查找相关研究,检索时间为建库至2021-10。两名研究者独立筛选文献、提取资料,并采用NOS量表评价纳入研究质量,使用RevMan 5.3软件和STATA软件进行Meta分析和发表偏倚评价,对异质性较大的结果进行敏感性分析,确保结果的准确性。结果:共纳入44项研究,包括NDR患者2 053例2 600眼,健康对照组患者1 775例2 117眼,对黄斑中心凹无血管区(FAZ)面积、周长,FAZ旁300μm内的血流密度(FD300)、非圆指数(AI)、黄斑区血流密度(VD)、神经节细胞复合体(GCC)厚度和视网膜神经纤维层(RNFL)厚度等17个指标进行了Meta分析,Meta分析结果显示：NDR组的FAZ浅层毛细血管丛(SCP)、深层毛细血管丛(DCP)面积、周长均高于健康对照组,FD300、黄斑区VD,RNFL厚度均低于健康对照组(均P<0.05);NDR组的AI值略高...     

国人糖尿病性视网膜病变眼和视网膜中央动脉血流改变的Meta分析

目的:综合评价糖尿病视网膜中央动脉(CRA)和眼动脉(OA)血流动力学改变对糖尿病性视网膜病变(DR)的诊断意义.方法:计算机网上检索中国期刊全文数据库1994～2006年来有关CRA和OA彩色超声多普勒血流动力学测定的DR病例-对照研究文献33篇对CRA和OA血流参数进行同质性检验和合并效应量的检验.结果:合并分析后有统计学意义的同质性研究结果为糖尿病患者的OA平均血流速度比正常人低0.26～0.31标准差;DR出现前,OA收缩期峰值血流速度比正常人低0.24～0.3标准差,OA舒张末期血流速度比正常人低0.31～0.37标准差;单纯型DR的OA舒张末期血流速度比正常人低0.94～1.01标准差,也比DR出现前糖尿病患者低0.56～0.67标准差;增殖型DR的CRA平均血流速度比正常人低2.98～3.21标准差,也比单纯型DR者低0.49～2.43标准差.结论:糖尿病患者表现早期OA的血流速度降低,DR增殖期CRA的平均血流速度降低.血流动力学改变早于DR肉眼可见的视网膜形态学改变.     

OCTA评价无糖尿病视网膜病变患者黄斑区微循环特征的Meta分析

目的:采用Meta分析的方法,对光学相干断层扫描血管成像技术(OCTA)测量无糖尿病视网膜病变(NDR)的患者黄斑区的血流密度(VD)及浅层中心凹无血管区(FAZ)面积进行系统评价,探讨糖尿病早期视网膜的微循环特征。方法:在PubMed、Embase、Web of Science、Cochrane Library数据库中全面检索发表于2011-01-01/2021-01-05之间关于OCTA分析NDR患者黄斑区不同区域血流密度的研究。比较NDR组与正常对照组(同期年龄、性别与NDR组患者相匹配的健康人群)在浅层旁中心凹血流密度(spafVD)、浅层中心凹周围血流密度(spefVD)、深层旁中心凹血流密度(dpafVD)、深层中心凹周围血流密度(dpefVD)、浅层FAZ面积、最佳矫正视力(BCVA)。结果:研究纳入文献13篇,共1 227眼(正常对照组558眼,NDR组669眼)。Meta分析结果显示：与正常对照组相比,NDR组spafVD(MD=-1.90,95%CI:-2.43～-1.37,P<0.00001)、spefVD(MD=-1.29,95%CI:-2.14～-0.4...     

糖尿病视网膜病变患者房水VEGF和IL-6水平的测定及其临床意义

目的 探讨糖尿病视网膜病变(DR)程度与房水中血管内皮生长因子(VEGF)和白细胞介素-6(IL-6)含量之间的关系.方法 采用双抗体夹心酶联免疫吸附(EIISA)法,测定88例房水中VEGF和IL-6的含量,根据散瞳眼底检查和眼底荧光素血管造影检查后,实验组分为:无糖尿病视网膜病变组(NDR)21例、单纯型糖尿病性视...     

促红细胞生成素基因与糖尿病视网膜病变相关性的Meta分析

目的 分析促红细胞生成素（EPO）基因单核苷酸多态性位点（SNP）与继发于2型糖尿病（T2DM）视网膜病变（DR）的相关性。设计Meta分析。研究对象 以英文或中文发表的以探讨DR和EPO基因相关性为研究目的的文献。方法 搜集中国知网（China National Knowledge Internet,CNKI）、Web of Knowledge（ISI）、National Center for Biotechnology Information（Pubmed）和Embase 4个数据库中2020年9月30日以前以中文或英文发表的关于EPO基因与DR相关性的文献。使用Stata 12.0软件进行Meta分析。主要指标 合并优势比（pooled odds ratio,pooled OR）、组间异质性（Pheterogeneity）和发表偏倚（publication bias）。结果 共6篇文献纳入本Meta分析,包括1940例DR和2175例糖尿病对照。结果显示EPO基因的rs507392, rs1617640和rs551238 位点与DR无显著相关性（P均>0.05）。结论 EPO基因可能与DR无相关性。     

糖尿病视网膜病变与白细胞粘附及变形能力关系的研究

目的 探讨白细胞粘附功能和变形能力在糖尿病视网膜病变发生发展中的作用。方法 采用ＷＹＪ－Ⅱ型体外血栓血小板粘附两用仪和ＤＸＣ－３００型红细胞变形能力测定仪,对３５例糖尿病视网膜病变患者（ＤＲ）、３５例糖尿病无视网膜病变患者（ＮＤＲ）及３５例性别、年龄相当的正常人白细胞粘附功能（ＬＡＦ）和白细胞变形能力（ＬＤ）进行检测,并与空腹血糖（ＦＢＧ）、糖化血红蛋白（ＨｂＡ１ｃ）进行了分析。结果 糖尿病患者ＬＡＦ明显高于无糖尿病组,糖尿病患者中ＤＲ患者又明显高于ＮＤＲ患者,而ＬＤ则明显低于正常对照组,其中又以ＤＲ组下降最为显著,ＬＡＦ的下降与ＬＤ,ＦＢＧ,ＨｂＡ１ｃ及病程密切相关。结论 糖尿病患者ＬＡＦ和ＬＤ的变化与ＤＲ的发生发展有一定的关系。     

增生性糖尿病视网膜病变患者房水中 VEGF与IL-6、IL-18相关性研究

目的研究增生性糖尿病视网膜病变（PDR）患者房水中血管内皮生长因子（VEGF）与白介素6（IL-6）、白介素18（IL-18）水平的差异,并探讨其之间的相关性。方法分析2013年1月至2014年6月75例我院收治的75例行白内障超声乳化手术的II型糖尿病患者的临床资料,观察组（39例）为PDP患者,对照组（36例）选取无糖尿病视网膜病变的患者。结果两组研究对象血清中总胆固醇（ TC）、甘油三酯（ TG）、高密度脂蛋白（ HDL-c）、低密度脂蛋白（LDL-c）水平均无统计学差异（ P ＞0．05）,观察组患者血中糖化血红蛋白（HbA1c）水平明显高于对照组,差异具有统计学意义（ t ＝2．449, P ＜0．05）;观察组患者房水中IL-6（ t ＝16．14, P ＜0．001）、IL-18（ t ＝16.08, P ＜0．001）及VEGF（ t ＝5．361, P ＜0．001）水平明显高于对照组,差异具有统计学意义（ P ＜0．05）;观察组患者VEGF与IL-6（ r ＝0．815, P ＜0．001）、IL-18（ r ＝0．869, P ＜0．001）及HbA1c（ r ＝0．694, P ＜0．001）均呈现显著正相关。结论 VEGF、IL-6、IL-18、HbA1c在PDR的发生机制中起到了重要的作用,临床上可以用来作为治疗PDR患者的诊断参考指标。     

Prevalence of diabetic retinopathy in Iran: a systematic review and Meta-analysis

AIM: To estimate the overall prevalence of diabetic retinopathy (DR) in Iran by a systematic review and Meta-analysis. METHODS: We conducted a search of all published literature on diabetic patients for the prevalence of DR using Web of Sciences, PubMed, Scopus, Google Scholar, and national electronic databases SID, Magiran, and Iranmedex from their inception until September 2016 with standard keywords. Pooled estimates of the DR prevalence and the corresponding 95% confidence intervals (CI) were calculated using random effects models. RESULTS: Thirty-one studies involving 23 729 patients with type I and II diabetes were included. The publication bias assumption for prevalence of DR was rejected by Begg and Egger tests (P=0.825, P=0.057, respectively). The results of Cochran test and I2 statistics showed considerable heterogeneity for prevalence of DR (Q=1278.21, d.f.=30, P<0.001 and I2=97.7%). The prevalence of DR, non-proliferative diabetic retinopathy (NPDR) and proliferative diabetic retinopathy (PDR) in Iranian diabetic patients were 41.9% (95% CI: 35.6-48.2), 32.2% (95% CI: 28.7-35.8), and 13.2% (95% CI: 8.3-18.1), respectively. CONCLUSION: The prevalence of DR in Iran appears a little high. NPDR was more common. This study highlights the necessity for DR screening and management in diabetic patients in Iran.     

Computer aided diabetic retinopathy detection based on ophthalmic photography: a systematic review and Meta-analysis

AIM: To ensure the diagnostic value of computer aided techniques in diabetic retinopathy (DR) detection based on ophthalmic photography (OP). METHODS: PubMed, EMBASE, Ei village, IEEE Xplore and Cochrane Library database were searched systematically for literatures about computer aided detection (CAD) in DR detection. The methodological quality of included studies was appraised by the Quality Assessment Tool for Diagnostic Accuracy Studies (QUADAS-2). Meta-DiSc was utilized and a random effects model was plotted to summarize data from those included studies. Summary receiver operating characteristic curves were selected to estimate the overall test performance. Subgroup analysis was used to identify the efficiency of CAD in detecting DR, exudates (EXs), microaneurysms (MAs) as well as hemorrhages (HMs), and neovascularizations (NVs). Publication bias was analyzed using STATA. RESULTS: Fourteen articles were finally included in this Meta-analysis after literature review. Pooled sensitivity and specificity were 90% (95%CI, 85%-94%) and 90% (95%CI, 80%-96%) respectively for CAD in DR detection. With regard to CAD in EXs detecting, pooled sensitivity, specificity were 89% (95%CI, 88%-90%) and 99% (95%CI, 99%-99%) respectively. In aspect of MAs and HMs detection, pooled sensitivity and specificity of CAD were 42% (95%CI, 41%-44%) and 93% (95%CI, 93%-93%) respectively. Besides, pooled sensitivity and specificity were 94% (95%CI, 89%-97%) and 87% (95%CI, 83%-90%) respectively for CAD in NVs detection. No potential publication bias was observed. CONCLUSION: CAD demonstrates overall high diagnostic accuracy for detecting DR and pathological lesions based on OP. Further prospective clinical trials are needed to prove such effect.     

IL-6与糖尿病性视网膜病变的相关研究进展

近年来,随着糖尿病患者的不断增多,糖尿病的并发症之一糖尿病性视网膜病变(diabetic retinopathy,DR)也逐渐成为我国目前及未来防盲、治盲的重点。现在,DR免疫炎症发病机制学说得到了越来越多学者的认同。我们就炎症因子IL-6(interleukin-6,IL-6)在DR中的作用加以综述。     

Prevalence of diabetic retinopathy, proliferative diabetic retinopathy and non-proliferative diabetic retinopathy in Asian T2DM patients: a systematic review and Meta-analysis

AIM: To investigate the pooled prevalence of diabetic retinopathy (DR), proliferative DR (PDR) and nonproliferative DR (NPDR) in Asian type 2 diabetes mellitus (T2DM) patients. METHODS: We performed a systematic search online search using PubMed, EMBASE, Web of Science, the Cochrane Library, and China WeiPu Library to identify eligible studies that reported the prevalence of DR, PDR and NPDR in Asian T2DM patients. Effect size (ES) with 95% confidence interval (CI) was used to evaluate the prevalence of DR, PDR and NPDR in Asian T2DM patients, respectively. RESULTS: There were 41 references and 48 995 T2DM patients involved in this study. The prevalence of DR, PDR, and NPDR was 28%, 6%, and 27% in T2DM patients, respectively; while the prevalence of PDR and NPDR in DR patients was 17% and 83%, respectively. Subgroup analysis showed that prevalence of DR in T2DM patients from Singaporean, Indian, South Korean, Malaysian, Asian, and Chinese was 33%, 42%, 16%, 35%, 21% and 25%, respectively. In T2DM patients with NPDR from Indian, South Korean, Malaysian, Asian, Chinese, higher prevalence was found than that in PDR patients (45% vs 17%, 13% vs 3%, 30% vs 5%, 23% vs 2% and 22% vs 3%), as well as in DR patients (74% vs 26%, 81% vs 19%, 86% vs 14%, 92% vs 8% and 85% vs 15%). The prevalence of PDR in T2DM from India was higher than patients from other locations of Asia, and the same results were also observed in NPDR patients. CONCLUSION: In either T2DM Asian patients or DR patients, NPDR is more common than PDR. Based on our results, we should pay more attention to NPDR screening and management in T2DM patients, and we also recommend suitable interventions to prevent its progression.     

Association between cystatin C and diabetic retinopathy among type 2 diabetic patients in China: a Meta-analysis

AIM: To explore the correlation between cystatin C (Cys-C) and diabetic retinopathy (DR) in those patients with type 2 diabetes mellitus (DM) in China. METHODS: Articles were collected from China National Knowledge Infrastructure (CNKI), Wanfang, VIP, PubMed, EMBASE, Cochrane Library, Clinical Trials.gov, and Google Scholar. Quality and risk of bias within included studies was assessed using the Newcastle-Ottawa scale (NOS). Heterogeneity was determined by using Cochran’s Q-test and Higgins I2 statistics. Mean differences (MDs) and 95% confidence intervals (CIs) of Cys-C within the diabetes without retinopathy (DWR) and DR, DWR and non-proliferative diabetic retinopathy (NPDR), NPDR and proliferative diabetic retinopathy (PDR) were collected by using random-effects model because of high heterogeneity. Meta-analysis was conducted based on 23 articles of 2331 DR including NPDR and PDR patients and 2023 DWR patients through Review Manager 5.3. Subgroup analyses were also performed according to DM duration, body mass index (BMI), total cholesterol (TC), total triglycerides (TG), low-density lipoprotein C (LDL-C), and high-density lipoprotein C (HDL-C), sample origins and methods. Publication bias was assessed by the funnel plot. RESULTS: Cys-C level in DR patients was increased compared with that of DWR (total MD: 0.69, 95%CI: 0.41 to 0.97, Z=4.79, P<0.01). Besides, the synthesized results of the studies showed the similar findings in the DWR vs NPDR group (total MD: 0.29, 95%CI 0.20 to 0.39, Z=6.02, P<0.01) and the NPDR vs PDR group (total MD: 0.63, 95%CI 0.43 to 0.82, Z=6.33, P<0.01). Heterogeneity of most of the subgroup analyses was still obvious (I2?≥?50%, P?相似文献   

Effects of lipid-lowering agents on diabetic retinopathy: a Meta-analysis and systematic review

AIM: To clarify this controversy and to provide evidence for application of lipid lowering agents in treatment of diabetic retinopathy (DR). METHODS: We searched the databases of PubMed, Embase and Cochrane Library Central Register of Controlled Trials (CENTRAL) and abstracts from main annual meetings up to January 1, 2017. Google scholar and ClinicalTrials.gov were also searched for unpublished relevant studies. We included randomized controlled trials (RCTs) that studied lipid-lowering agents in type 1 or type 2 diabetes in this Meta-analysis. The primary endpoint was the progression of DR, and the secondary endpoints included vision loss, development of diabetic macular edema (DME) and aggravation of hard exudates. The pooled odds ratios (OR) with corresponding 95% confidence intervals (95%CIs) were calculated. RESULTS: After systemic and manual literature search by two independent investigators, we included 8 RCTs from 7 published articles with 13 454 participants in this Meta-analysis. The results revealed that lipid-lowering drugs were associated with reduced risk in DR progression [OR=0.77 (95%CI: 0.62, 0.96), P=0.02]. Lipid-lowering agents might have protective effect on DME compared to placebo, although the difference was not statistically significant [OR=0.60 (95%CI: 0.34, 1.08), P=0.09]. However, no significant differences in the worsening of vision acuity [OR=0.96 (95%CI: 0.81,1.14), P=0.64] and hard exudates [OR=0.50 (95%CI:0.15, 1.74), P=0.28] were found between the lipid-lowering drugs and the placebo groups. CONCLUSION: In DR patients, lipid-lowering agents show a protective effect on DR progression and might be associated with reduced risk in the development of DME. However, lipid-lowering agents have no effects on vision loss and hard exudates aggravation. Further clinical trials in larger scale are required to confirm the conclusion of this study and thus justify the use of intensive control lipids with anti-lipid agents at the early stages of DR.     

中性粒细胞-淋巴细胞比值在糖尿病视网膜病变诊断中的意义： Meta分析

目的 分析中性粒细胞-淋巴细胞比值（neutrophil to lymphocyte ratio,NLR）在糖尿病视网膜病变（diabetic retinopathy,DR）诊断中的临床意义。设计Meta分析。研究对象 单纯Ⅱ型糖尿病和Ⅱ型糖尿病发生视网膜病变患者中性粒细胞-淋巴细胞比值相关的中英文文献。 方法 计算机检索PubMed、Embase、Cochrane、中国知网和万方数据库,并阅读参考文献以期纳入充足研究。采用Review manager 5.3和Stata 14.0软件进行数据分析。改变效应模型进行敏感性分析,漏斗图和Egger’s 检验发表偏倚。主要指标 中性粒细胞-淋巴细胞比值。 结果 纳入11项研究,包括982例DR 患者、1224例单纯Ⅱ型糖尿病患者和683例健康对照人群。Meta分析结果表明,DR患者的NLR水平显著高于健康人群[SMD （95% CI)=0.90（0.36, 1.44）, P<0.001]和单纯Ⅱ型糖尿病患者[SMD（95% CI）=0.69（0.41, 0.97）, P<0.001]。亚组分析结果表明NLR水平在非增生性和增生性糖尿病视网膜病变之间的差异无统计学意义。 结论 Meta分析结果表明,DR患者的NLR水平明显升高是糖尿病患者发生视网膜病变风险的预测因子,可能为DR的临床诊断和管理提供依据。