雷珠单抗对房水中炎症相关细胞因子含量的影响

目的:比较新生血管性青光眼(neovascular glaucoma,NVG)与年龄相关性白内障患者房水中炎症相关细胞因子浓度,观察玻璃体腔内注射雷珠单抗前后房水中炎症相关细胞因子表达变化.方法:纳入21例21眼NVG患者以及20例20眼年龄相关性白内障患者作为对照.NVG患者先予玻璃体腔内注射雷珠单抗,再行青光眼房水引流阀植入术.在玻璃体腔内注射雷珠单抗以及2~7d后行青光眼房水引流阀植入术术前抽取NVG患者房水,同时在白内障手术时抽取年龄相关性白内障患者房水.用Multiplex微珠免疫分析系统检测房水中细胞因子浓度.结果:NVG组患者玻璃体腔内注射雷珠单抗前房水中IL-1β,IL-6,IL-8,MCP-1以及VEGF浓度明显高于年龄相关性白内障患者,差异均有统计学意义(均P<0.001).玻璃体腔内注射雷珠单抗后,NVG患者房水中IL-6,IL-8,MCP-1以及VEGF浓度较注射雷珠单抗前明显降低,差异有统计学意义(P<0.05).NVG患者房水中检测的炎症相关细胞因子的浓度与患者年龄、术前眼压均无明显相关性.结论:NVG患者玻璃体腔内注射雷珠单抗前房水中与炎症相关的细胞因子表达明显上调.NVG患者行雷珠单抗治疗后,房水中与炎症相关的细胞因子明显下调.     

增生性玻璃体视网膜疾病眼内液血管内皮生长因子的表达

目的 观察增生性玻璃体视网膜疾病患者眼内液（房水、玻璃体）中血管内皮生长因子（VEGF）含量的变化规律，探讨VEGF在增生性玻璃体视网膜疾病发展变化中的作用。 方法 采用双抗体夹心酶联免疫吸附试验(ELISA)定量检测增生性玻璃体视网膜病变（PVR）、视网膜静脉阻塞（RVO）、增生性糖尿病视网膜病变（PDR）、新生血管性青光眼（NVG）患者组及正常对照组房水、玻璃体VEGF含量。 结果 PVR、RVO、PDR、NVG患者组房水及玻璃体VEGF含量均高于正常对照组，其差异均有统计学意义(P<0.05)；NVG、PDR、RVO、PVR患者组房水及玻璃体VEGF含量依次降低 ，其差异有统计学意义(P<0.05)；PVR、RVO、PDR、NVG患者组和正常对照组玻璃体VEGF含量均高于房水VEGF含量，其差异有统计学意义(P<0.05)；PVR患者病史与房水、玻璃体VEGF含量呈负相关（r分别为－0.819、－0.823，P＜0.05）；RVO患者病史与房水、玻璃体VEGF含量呈正相关（r分别为0.913、0.929，P＜0.05）；PDR患者玻璃体积血时间与房水、玻璃体VEGF含量呈正相关（r分别为0.905、0.920，P＜0.05）。 结论 增生性玻璃体视网膜疾病患者房水及玻璃体VEGF含量明显增高，VEGF可能在增生性玻璃体视网膜疾病发展变化中起着重要的作用。 (中华眼底病杂志， 2006， 22：313-316）     

新生血管性青光眼患者房水中血小板反应蛋白－1的表达及其与血管内皮生长因子相关关系的临床研究

目的检测新生血管性青光眼(NVG)与年龄相关性白内障患者房水中血小板反应蛋白－1(TSP－1)的表达情况,并分析NVG患者房水中的TSP－1与血管内皮生长因子(VEGF)的关系。 方法纳入30例(30只眼)NVG患者(NVG患者组)以及30例(30只眼)年龄相关性白内障患者(对照组)。所有NVG患者在行抗青光眼手术前抽取房水,同时在白内障手术时抽取年龄相关性白内障患者房水。采用酶联免疫吸附试验检测房水以及血液中TSP－1与VEGF的浓度。房水和血液中VEGF浓度和TSP－1浓度采用均数±标准差( ±s)表示,采用独立样本t检验进行组间比较。各细胞因子之间、细胞因子浓度与年龄、眼压之间的相关性用采用Spearman's相关分析。 结果NVG组患者房水中TSP－1浓度为(15.47±2.28) ng/ml,而对照组患者房水中TSP－1浓度为(2.28±1.59)ng/ml,NVG组患者房水中TSP－1浓度明显高于对照组,差异有统计学意义(t＝12.70,P<0.05)。NVG组患者与对照组患者房水中VEGF浓度分别为(3355.81±2284.54)pg/ml及(262.68±125.66 )pg/ml,差异有统计学意义(t＝7.41,P<0.05)。NVG组患者血浆中TSP－1浓度为(0.65±0.27)ng/ml,对照组患者血浆中TSP－1浓度为(0.57±0.25)ng/ml,两组之间浓度相当,差异无统计学意义(t＝1.16,P>0.05)。NVG组患者的VEGF血浆浓度为(13.01±7.60)pg/ml,对照组患者的VEGF血浆浓度为(14.62±6.96)pg/ml。二者比较,差异无统计学意义(t＝－0.86,P>0.05)。NVG患者房水中TSP－1与VEGF浓度呈显著正相关(r＝0.479,P<0.05)。在NVG组中,不管是TSP－1因子还是VEGF,其房水中的浓度与血浆中的浓度均无显著相关性。同样,在对照组中,房水TSP－1浓度与血浆TSP－1浓度无相关性,且房水VEGF浓度与血浆VEGF浓度亦无相关性。 结论NVG患者房水中TSP－1与VEGF表达明显上调,明显上调的TSP－1与VEGF呈现显著正相关。     

放射性视网膜病变患者房水中VEGF的浓度及其临床意义

目的 研究放射性视网膜病变(Radiation Retinopathy)患者房水中血管内皮生长因子(Vascular Endothelial Growth Factor.VEGF)的浓度,明确其对发病的意义.方法 选择2007年3月至2009年3月就诊的放射性视网膜病变患者4例8只眼,增殖性糖尿病性视网膜病变(Proliferative Diabetic Retinopathv,PDR)9名患者10只眼,在行玻璃体腔注入Bevcizumab(1.5mg)治疗前分别抽取100μl前房水;年龄相关性白内障患者10例10只眼,在超声乳化白内障吸除术前,分别抽取lOOμl前房水,所有房水样本均用酶联免疫吸附试验(Enzyme-Linked Immunosorbent Assay,ELISA)检测VEGF浓度.用Kruskal-Wallis H检验对三组患者术前房水中VEGF浓度进行分析,用Mann-Whitney U分别比较三组之间的差异,以P<0.05为差异有统计学意义.结果 放射性视网膜病变与PDR患者房水中VEGF浓度无显著性差异,二者均显著高于白内障患者房水中VEGF水平.结论 放射性视网膜病变患者房水中VEGF浓度显著升高,VEGF可能是引起放射性视网膜病变的重要因素.     

放射性视网膜病变患者房水中VEGF的浓度及其临床意义

目的 研究放射性视网膜病变(Radiation Retinopathy)患者房水中血管内皮生长因子(Vascular Endothelial Growth Factor.VEGF)的浓度,明确其对发病的意义.方法 选择2007年3月至2009年3月就诊的放射性视网膜病变患者4例8只眼,增殖性糖尿病性视网膜病变(Proliferative Diabetic Retinopathv,PDR)9名患者10只眼,在行玻璃体腔注入Bevcizumab(1.5mg)治疗前分别抽取100μl前房水;年龄相关性白内障患者10例10只眼,在超声乳化白内障吸除术前,分别抽取lOOμl前房水,所有房水样本均用酶联免疫吸附试验(Enzyme-Linked Immunosorbent Assay,ELISA)检测VEGF浓度.用Kruskal-Wallis H检验对三组患者术前房水中VEGF浓度进行分析,用Mann-Whitney U分别比较三组之间的差异,以P<0.05为差异有统计学意义.结果 放射性视网膜病变与PDR患者房水中VEGF浓度无显著性差异,二者均显著高于白内障患者房水中VEGF水平.结论 放射性视网膜病变患者房水中VEGF浓度显著升高,VEGF可能是引起放射性视网膜病变的重要因素.     

放射性视网膜病变患者房水中VEGF的浓度及其临床意义

目的 研究放射性视网膜病变(Radiation Retinopathy)患者房水中血管内皮生长因子(Vascular Endothelial Growth Factor.VEGF)的浓度,明确其对发病的意义.方法 选择2007年3月至2009年3月就诊的放射性视网膜病变患者4例8只眼,增殖性糖尿病性视网膜病变(Proliferative Diabetic Retinopathv,PDR)9名患者10只眼,在行玻璃体腔注入Bevcizumab(1.5mg)治疗前分别抽取100μl前房水;年龄相关性白内障患者10例10只眼,在超声乳化白内障吸除术前,分别抽取lOOμl前房水,所有房水样本均用酶联免疫吸附试验(Enzyme-Linked Immunosorbent Assay,ELISA)检测VEGF浓度.用Kruskal-Wallis H检验对三组患者术前房水中VEGF浓度进行分析,用Mann-Whitney U分别比较三组之间的差异,以P<0.05为差异有统计学意义.结果 放射性视网膜病变与PDR患者房水中VEGF浓度无显著性差异,二者均显著高于白内障患者房水中VEGF水平.结论 放射性视网膜病变患者房水中VEGF浓度显著升高,VEGF可能是引起放射性视网膜病变的重要因素.     

增生性糖尿病性视网膜病变患者房水细胞因子的改变及与血糖的相关性分析

目的探讨增生性糖尿病性视网膜病变(PDR)患者房水细胞因子的改变及与血糖的相关性。方法分析2013年1月至2015年1月在我院接受治疗的PDR患者的临床资料,列为观察组。另纳入单纯性年龄相关白内障患者作为对照组。结果共纳入观察组43例,对照组32例。观察组空腹血糖(FBG)水平显著高于对照组(t=11.040,P<0.001)。观察组患者房水肿瘤坏死因子-α(TNF-α)水平显著高于对照组(t=4.984,P<0.001)。观察组患者房水血管内皮生长因子(VEGF)水平显著高于对照组(t=18.860,P<0.001)。Pearson相关性检验显示观察组患者FBG水平与房水VEGF及TNF-α水平均呈现显著正相关,具有统计学意义(P<0.001)。结论 PDR患者房水高表达VEGF及TNF-α且与血糖水平正相关。     

PDR患者玻璃体手术前后房水中VEGF水平的变化

目的：检测增殖性糖尿病视网膜病变(proliferative diabetic retinopathy,PDR)患者玻璃体手术前后房水中血管内皮生长因子(vascular endothelial growth factor, VEGF)的浓度变化,研究VEGF在PDR发病机制中的作用。

方法：收集30例PDR患者玻璃体手术前后的房水标本,以30例无糖尿病的白内障患者作为正常对照组,用酶联免疫吸附分析(enzyme-linked immunosorbent assay, ELISA)方法检测VEGF的浓度。

结果：PDR患者与正常对照组相比,房水中VEGF浓度显著升高,有统计学差异(P<0.05)。PDR患者玻璃体视网膜手术后与手术前相比,房水中VEGF浓度显著降低,有统计学差异(P<0.05)。

结论：VEGF积极参与了PDR的发生发展,并与PDR后期新生血管形成有着密切的关系。     

康柏西普对增生性糖尿病视网膜病变患者氧化应激水平和炎症因子浓度的影响

目的 通过测定增生性糖尿病视网膜病变(PDR)患者玻璃体腔注射抗血管内皮生长因子(VEGF药物前后,眼房水中白介素-6(IL-6)、人单核细胞趋化蛋白-1(MCP-1)和丙二醛(MDA)水平的变化及之间的相关性,探讨康柏西普对PDR患者房水中氧化应激水平和炎症因子浓度的影响。方法 前瞻性临床研究。选取行玻璃体腔注射康柏西普,并行玻璃体切除术的PDR的患者共74例(75只眼)入组,其中男性35例,女性39例。每位患者在玻璃体注射康柏西普之前,前房穿刺取未经稀释的房水50～100μl; 1周后在行玻璃体切除术之前,前房穿刺取未经稀释的房水50～100μl。排除有其他严重的心脏、肝、肾等全身疾病史者;有青光眼,葡萄膜炎等其他眼部疾病病史者;以前有过视网膜激光、玻璃体注射药物史,眼部手术史者。所有患者均检测玻璃体腔注射抗VEGF药前后眼房水中的IL-6、MCP-1、MDA浓度。结果 玻璃体注射康柏西普7 d,房水中IL-6、MCP-1中位数水平(803.12pg/ml、1213.28 pg/ml)较注射前(32.32 pg/ml,986.91 pg/ml)显著升高,差异有统计学意义(P <...     

抗VEGF综合治疗对新生血管性青光眼的疗效

目的:观察联合抗VEGF药物的综合治疗对新生血管性青光眼(NVG)的疗效。方法:回顾性分析2012-02/2018-10在我院就诊的NVG患者62例68眼的临床资料,A组先行玻璃体腔注射抗VEGF药物,术后1wk行复合式小梁切除术,术后3wk行全视网膜激光;B组行睫状体冷凝术。观察两组患者治疗前和治疗后2wk,1、3、6mo的眼压、最佳矫正视力(BCVA)、眼轴和并发症等。结果:A组虹膜新生血管的消退程度优于B组。两组患者术后2wk,1、3、6mo眼压比较有差异(P<0.05),且治疗后6mo眼轴长度有差异(P<0.05)。A组总有效率为94%,B组总有效率为78%(P=0.073)。结论:NVG接受抗VEGF药物+复合式小梁切除术+全视网膜激光光凝治疗安全有效。     

Electrophysiological determination of the refractive state of the eye of the opossum

The refractive state of the eye of the South American opossum Didelphis marsupialis aurita was investigated with electrophysiological techniques. Using adult specimens, trapped from the wild, averaged cortical evoked responses were recorded from the region of projection of the central visual field. Stimuli consisted of a phase reversal of a square wave grating generated on a CRO screen, with luminance of 2.4 cd/m2 and contrast 0.84. The refractive state of the eye was altered by means of trial lenses and the amplitude of the cortical responses thus obtained compared to those obtained with no lens (control values). Refraction "tuning curves" were determined for each animal. The average refractive state was found to be -2.27 D indicating that this species when raised in its habitat shows, at low ambient luminosity, some degree of myopia. Determination of the Contrast Sensitivity Function indicate that induced ametropias lead to a reduction of the cut-off value of the spatial frequency and a loss of contrast sensitivity.     

Influence of exercise on the structure of the anterior chamber of the eye

Purpose

To measure changes in anterior chamber structure before and after exercise in healthy individuals using anterior segment optical coherence tomography (ASOCT).

Methods

Thirty‐two healthy young individuals performed jogging for 20 min. Eye blinking rate was recorded during rest and exercise. The anterior chamber angle (ACA), angle opening distance at 500 μm from the scleral spur (AOD500), trabecular‐iris space area at 500 μm from the scleral spur (TISA500), iris concavity (IC), iris concavity ratio (CR), iris thickness at 750 μm from the scleral spur (IT750), anterior chamber depth (ACD), anterior chamber width (ACW), pupil diameter (PD), intraocular pressure (IOP), blood pressure (BP) and heart rate (HR) were recorded before and after exercise. Anterior chamber angle (ACA), AOD500, TISA500, IC, IT750, ACD, ACW and PD were measured with ASOCT.

Results

Compared with rest, the blinking rate during exercise did not change significantly (13.04 ± 5.80 versus 13.52 ± 5.87 blinks/min, p = 0.645). The average IOP (15.4 ± 2.4 versus 12.4 ± 2.1 mmHg), ACA (35.96 ± 11.35 versus 40.25 ± 12.64 degrees), AOD500 (0.800 ± 0.348 versus 0.942 ± 0.387 mm), TISA500 (0.308 ± 0.155 versus 0.374 ± 0.193 mm²), IC (?0.078 ± 0.148 versus ?0.153 ± 0.159 mm) and CR (?0.027 ± 0.050 versus ?0.054 ± 0.056) changed significantly (all p < 0.001), while the average IT750 (0.463 ± 0.084 versus 0.465 ± 0.086 mm; p = 0.492), ACD (3.171 ± 0.229 versus 3.175 ± 0.238 mm; p = 0.543) and ACW (11.768 ± 0.377 versus 11.755 ± 0.378 mm; p = 0.122) showed no significant change after exercise.

Conclusion

The blinking rate did not change significantly during exercise, while ACA, AOD500 and TISA500 increased after exercise. Exercise also induced or increased IC. These changes in anterior chamber structure were only associated with exercise, but not with the postexercise change in PD or IOP.     

Determination of the location of the fovea on the fundus

PURPOSE: To evaluate whether the distance between optic nerve head and fovea in healthy eyes determined by scanning laser ophthalmoscope may facilitate estimation of the location of the fovea relative to the optic disc in patients with macular disease. METHODS: The angular distance was measured, in horizontal and vertical directions, between the center of the optic nerve head and the fovea in 104 eyes of 104 healthy probands. For additional evaluation of intraindividual variation in 70 of these persons the contralateral eye was measured as well. RESULTS: The distance between the optic disc and the fovea differed vertically more than horizontally (-1.5 +/- 0.9 degrees [-3.65 to +0.65 degrees ] vs. 15.5 +/- 1.1 degrees [13.0-17.9 degrees ]). There was a mean angle between the fovea and the center of the optic disc versus the horizon of -5.6 +/- 3.3 degrees. The intraindividual difference between right and left eyes was markedly lower, with average angles being 0.2 +/- 1.3 degrees vertically and 0.0 +/- 1.1 degrees horizontally. CONCLUSIONS: The distance between the optic nerve head and the fovea does not allow for a meaningful determination of the location of the fovea in eyes in which morphologic changes have occurred. The angle of rotation of the fovea relatively to the center of the optic nerve head is relatively stable. Therefore, the size of a central scotoma can be determined by movement of the blind spot according to the change of the preferred retinal locus (PRL). In addition, the knowledge of the location of the fovea enables determination of the position in the contralateral eye of the same patient.