Objective To observe the levels of vascular endothelial growth factor (VEGF), interleukin-6 (IL-6) and monocyte chemotactic protein-1 (MCP-1) in aqueous humor of patients with macular edema secondary to central retinal vein occlusion (CRVO). Methods Forty eyes of 40 consecutive patients with macular edema secondary to CRVO (CRVO group) were enrolled in this study. The patients included 25 males and 15 females. The patient age ranged from 38 to 76 years. The control group was 20 patients with senile cataract who underwent phacoemulsification, including 10 males and 10 females. The levels of VEGF165, VEGF165b, IL-6 and MCP-1 in aqueous humor were determined by enzymelinked immunosorbent assay. The correlation of VEGF, and IL-6, and MCP-1 were analyzed. Results The median aqueous level of VEGF165, IL-6 and MCP-1 were 1089.0, 165.6, 1253.0 pg/ml respectively in CRVO group, which were higher than the control group's results (168.2, 4.7, 216.4 pg/ml respectively), the differences were statistically significant (Z=-4.549, -6.008, -5.343;P＜0.001). The VEGF165b in CRVO group and control group were 834.0, 915.9 pg/ml respectively, the difference was not statistically significant (Z=-0.207，P＞0.05). The ratio of VEGF165b to VEGF165 in CRVO group and control group were 2.71, 7.28 respectively, the difference was statistically significant (t=-3.007，P＜0.05). There was a highly positive correlation between IL-6 and VEGF in CRVO group (r=0.526,P=0.001) and also mild positive correlation in control group (r=0.425，P=0.070). No correlation between MCP-1 and VEGF was observed in both groups (CRVO group: r=0.211,P＞0.05. Control group: r=-0.019,P＞0.05). Conclusions VEGF165, IL-6 and MCP-1 levels were increased in CRVO patients while the VEGF165b was normal. The ratio between VEGF165b and VEGF165 in aqueous humor of patients with macular edema secondary to CRVO was decreased.
Objective To observe the expression of vascular endothelial growth factor (VEGF) in aqueous humor and vitreous body in eyes with proliferative vitreo-retinal diseases, and to investigate the role of VEGF plays in the pathoge nesis of proliferative vitreo-retinal diseases. Methods The concentration of VEGF in aqueous humor and vitreous body in eyes with proliferative vitreoretinopathy (PVR), retinal vein occlusion (RVO), proliferative diabetic retinopathy (PDR), and neovascular glaucoma (NVG) were measured by double antibodies sandwich enzyme-linked immunosorbent assay (ELISA). Results The concentration of VEGF in aqueous humor and vitreous body in eyes with PVR, RVO, PDR and NVG were obviously higher than that in the control group (Plt;0.05), respectively. Among all of the diseases, the concentration of VEGF in aqueous humor and vitreous body decreased orderly in NVG, PDR, RVO and PVR (Plt;0.05). The concentration of VEGF in vitreous body in eyes with PVR, RVO, PDR and in the control group were much higher than that in aqueous humor in corresponding groups (Plt;0.05). There was a negative correlation between the disease history and content of VEGF in aqueous humor and vitreous body in patients with PVR (r=－0.819, －0.823；Plt;0.05). The disease history positi vely correlated with the concentration of VEGF in aqueous humor and vitreous body in patients with RVO (r=0.913, 0.929；Plt;0.05), and the time of vitreous hemorrhage positively correlated with the concentration of VEGF in aqueous humor and vitreous body in patients with PDR (r=0.905, 0.920；Plt;0.05). Conclusion The concentration of VEGF in aqueous humor and vitreous body in patients with proliferative vitreo-retinal diseases significantly increases, and VEGF may play an important role in the pathoge nesis of proliferative vitreo-retinal diseases. (Chin J Ocul Fundus Dis, 2006, 22: 313-316)
Objective To detect the concentration of vascular endothelial growth factor (VEGF) in plasma and intraocular liquid (aqueous humor and vitreous body) in patients with deabetic retinopathy (DR) and the role VEGF plays in the development of DR. Methods The concentrations of VEGF in plasma, aqueous humor and vitreous body in DR and normal group were detected by ELISA. Results The concentration of VEGF in plasma was (34.47plusmn;1.76) pg/ml in non-DR group, (53.93plusmn;3.08) pg/ml in single DR group, (53.36plusmn;3.28) pg/ml in proliferative DR group, and (178.30plusmn;10.13) pg/ml in control group. There was no significant difference in the normal and the experimental groups (P＜0.05). The concentration of VEGF in aqueous humor was (184.8plusmn;12.60) pg/ml in proliferative DR group and (90.06plusmn;8.32) pg/ml in the control group, and there was significant difference between them (P＜0.05). The concentration of VEGF in vitreous body was (741.70plusmn;92.02) pg/ml in proliferative DR group and (94.38plusmn;21.21) pg/ml in the control group, and there was significantdifference between them (P＜0.05). There was no correlation of VEGF concentration in plasma and that in aqueous humor and vitreous respectively(P＞0.05), and positive correlation of VEGF concentration was found in vitreous body and HbA1c (r=0.9067,P＜0.01). Conclusions Concentration of VEGF in plasma in patients with DR is lower than that in the normal persons,but not correlated with the concentration of VEGF in aqueous humor and vitreousbody. The concentration of VEGF in aqueous humor and vitreous body increase in patients with proliferative DR, and the increase in vitreous body and the value of HbA1c of the patients correlate. (Chin J Ocul Fundus Dis，2004，20：343-345)
Objective To review the distribution and shifting trends of cultured bacteria from the aqueous humor and the vitreous body. Methods A retrospective analysis on distribution of Gram′s stain, the distribution and change of isolates was performed in 522 specimens (aqueous humor,261 and vitreous body,261) of patients with suspected endophthalmitis during a 10-year period (1989-1998). Results The positive cultures were 119 (aqueous humor,44 and vitreous body,75) of 522 specimens. The average positive rate was 22.8%. Gram-positive cocci constituting 45.4%(54) of total isolates followed by Gram-negative bacilli,34.5%(41);Gram-positive bacilli, 20.2%(24). In the positive bacterial cultures, enterobacteriaceae was the most common isolate, 18.5%, and the next was micrococcus, 16.0%; coagulase-negative staphylococcus,12.6%; and pseudomonas,10.9%.Comparing the data from 1989 through 1993 with the data from 1994 through 1998, the frequency of Gram-positive cocci had no significant change, while the frequency of Gram-positive bacilli was decreased and the percentage of Gram′s-negative bacilli was increased. Conclusions Gram-positive cocci and Gram-negative bacilli are the predominant pathogens of bacterial endophthalmitis. The percentage of Gram′s-negative bacilli has increased for 5 years. It is very important to comprehend the distribution and shifting trends of these pathogenic bacteria for diagnosis, prevention and treatment of bacterial endophthalmitis. (Chin J Ocul Fundus Dis, 2002, 18: 104-105)
Objective To detect the levels of vascular endoth elial growth factor (VEGF) in aqueous humor and vitreous of patients with neovascular glaucoma (NVG) and infer their possible effect on the development of neovascularization of iris. Methods The concentration of VEGF in 22 samples of ocular fluid of aqueous humor and vitreous respectively obtained from 11 patients with NVG undergone intraocular surgery were measured by using enzyme linked immunosobent assay (ELISA) for quantitative analysis. As control, 12 samples of ocular fluid of 6 patients with macular hole were detected by the same methods. Results The mean [AKx-]plusmn;s VEGF concentrations in aqueous humor and vitreous from patients with NVG were [(1.451plusmn;0.247)、(1.610plusmn;0.125) ng/ml] higher than those in the cotrol group [(0.189plusmn;0.038)、(0.201plusmn;0.055) ng/ml], there was a significant difference between the two groups statistically (t=12.007，Plt;0001；t=26.0 57，Plt;0.001). Conclusion The patients with NVG have significantly increased level of VEGF in ocular fluid, and VEGF might fill the role in mediating active iris neovascularization. (Chin J Ocul Fundus Dis, 2001,17:305-306)
ObjectiveTo analyze the sensitivity and specificity of polymerase chain reaction (PCR) tests in the detection of cytomegalovirus (CMV) in the diagnosis of patients with acquired immune deficiency syndrome (AIDS), using aqueous humor samples. Methods25 AIDS patients (including 21 men and 4 women) were studied. The age of the patients varied from 24 to 59 years, with an average of (39.2±9.3) years. The CD4+ T cell count was from 1 to 523 cells/μl, with a medium of 40 cells/μl. They were infected with human immunodeficiency virus(HIV)for a period from 15 days to 9 years with a median of 10 months. They were divided into three groups according to the fundus and treatment, including untreated cytomegalovirus retinitis (CMVR), treated CMVR and control group. There were 10 patients without anti-CMV treatment and 7 patients treated previously with foscarnet or ganciclovir whose eyes were diagnosed CMVR. Control group has 8 patients who had normal fundus or minor retinopathy excluded from CMVR. Approximately 100 μl of aqueous humor was obtained by anterior-chamber paracentesis and PCR was performed in all cases. ResultsThere were CMV DNA in 9 of 10 eyes with untreated CMVR (90.0% sensitivity). Of 7 specimens from eyes with treated CMVR, 3 were CMV PCR positive (42.9% sensitivity). All 8 samples of the control group were negative for CMV DNA, indicating the clinical specificity of our PCR was greater than 99.9% for CMVR. The anterior chamber paracentesis did not cause any complications in our patients except for a patient with subconjunctival hemorrhage. ConclusionsThe assay had an estimated sensitivity of 90.0% in detecting untreated CMVR and a sensitivity of 42.9% in detecting CMVR that had been treated. The specificity of this assay was greater than 99.9%.
ObjectiveTo observe the safety and efficacy of regime that based on aqueous cytomegalovirus-DNA (CMV-DNA) load and IL-8 determination for therapeutic monitoring and local treatment cessation of cytomegalovirus retinitis (CMVR) patients after allogeneic hematopoietic stem cell transplantation (HSCT).MethodsA prospective case series study. A total of 14 CMVR patients (22 eyes) after allogeneic HSCT diagnosed in Ophthalmology Department of Peking University People's Hospital between January 2016 and December 2018 were involved in this study. All patients were CMV-DNA seronegative at baseline and were treated with intravitreous injection of ganciclovir (IVG, 3 mg in 0.05 ml) twice per week for 4 times in the induction stage and once a week in the maintenance stage. Aqueous humor sample was collected during the first time of IVG every week. CMV-DNA and the level of IL-8 were measured by real time quantitative PCR and ELISA, respectively. During follow-up, negative CMV-DNA (＜103/ml) or level of IL-8＜30 pg/ml in aqueous sample was set as local treatment cessation. Then patients were followed every 2 weeks for at least 6 months. BCVA, intraocular pressure and fundus examination were taken for each visit. The BCVA examination was performed using the international standard visual acuity chart, which was converted into logMAR visual acuity. BCVA and intraocular pressure at the baseline and the last follow-up were compared by the Student t matching test.ResultsOf the 14 CMVR patients (22 eyes) after allogeneic HSCT, 8 patients (16 eyes) were bilateral, 6 patients (6 eyes) were unilateral. At the baseline, the mean logMAR BCVA was 0.814±0.563, the intraocular pressure was 17.2±7.8 mmHg (1 mmHg=0.133 kPa), the mean aqueous CMV-DNA load was (3.43±4.96)×105/ml, the mean level of IL-8 was 518±541 pg/ml. At cessation of local treatment, the median number of intravitreal injections was 5 times. Nine eyes showed negative CMV-DNA in aqueous humor, of which, 7 eyes showed negative IL-8 in aqueous. CMV-DNA could still be detected in 13 eyes, while IL-8 was negative. Only one eye’s retinal lesion was completely quiet. Six months after local treatment cessation, the mean logMAR BCVA was 0.812±0.691, the intraocular pressure was 14.8±5.4 mmHg; which was not significantly different from baseline (t=-0.107, 1.517; P=0.916, 0.137). Recurrence of CMVR happened in only 1 eye because of systemic EB virus infection. Retinal lesions progressively improved and became completely quiet in all the remaining 20 eyes. In 22 eyes, iatrogenic vitreous hemorrhage occurred due to low platelet count during treatment (＜30×109/ml) in 4 eyes. When the treatment was terminated for 6 months, the fundus of hematoma absorption was clearly visible. At the time of CMVR diagnosis, there were 2 eyes (9%) with posterior subcapsular opacity, which may be caused by systemic glucocorticoid therapy after allogeneic HSCT.ConclusionAqueous CMV-DNA load and level of IL-8 could be used as quantitative variables for monitoring the therapeutic effect and determining time for local treatment cessation for CMVR after HSCT safely and efficiently.