scholarly journals SELENIUM AND SELENOPROTEIN P1 LEVELS ARE RELATED TO PRIMARY OPEN-ANGLE GLAUCOMA / NIVOI SELENA I SELENOPROTEINA P1 POVEZANI SU SA PRIMARNIM GLAUKOMOM OTVORENOG UGLA

2013 ◽  
Vol 33 (2) ◽  
pp. 143-148 ◽  
Author(s):  
Mohammad Najafi ◽  
Morteza Nouruzi Yeganeh ◽  
Arezoo Miraftabi ◽  
Reza Zarei ◽  
Isa Noormohammadi
Keyword(s):  
Aqueous Humour ◽  
Primary Open Angle Glaucoma ◽  
Reduced Glutathione ◽  
Open Angle Glaucoma ◽  
Serum Levels ◽  
Visual Field Defects ◽  
Unknown Etiology ◽  
Serum Selenium ◽  
Open Angle ◽  
Significant Difference

Summary Background Glaucoma is a highly prevalent eye disease related to optic nerve lesions and visual field defects. Primary Open-Angle Glaucoma (POAG) is a type of glaucoma that occurs frequently with unknown etiology. In this study, we investigated the serum levels of selenium, selenoprotein P1, glutathione, hemolysate glutathione peroxidase1 (GPx1) activity and aqueous humour selenium in POAG patients. Methods Ninety sex- and age-matched subjects (POAG patients; n=45 and, controls; n=45) with the controlled confounders (smoking, hypertension and alcohol beverages) were recruited on clinical histories and exams. The serum and aqueous humour selenium levels were measured using GFAAS technique. The serum selenoprotein P1 level was assayed with the ELISA method. The hemolysate GPx1 activity and serum reduced glutathione level were also measured using known colorimetric techniques. Results The serum selenium (P=0.01) and selenoprotein P1 (P<0.001) levels were significantly high in POAG patients. Furthermore, the aqueous humour selenium level was significantly high among patients as compared to controls (64.68±13.07 vs. 58.36±13.76 ng/mL, P=0.02). The results did not show a significant difference (P=0.36) in the hemolysate GPx1 activity between the groups. The cutoff points for intraocular pressure (IOP) and serum selenoprotein P1 parameters were estimated to be 39 mmHg (sensitivity 97.5%; 1-specificity 6.5%) and 188 mg/mL (sensitivity 93.5%; 1-specificity 14%), respectively.

scholarly journals Cellular and plasma fibronectin in the aqueous humour of primary open-angle glaucoma, exfoliative glaucoma and cataract patients

Eye ◽  
1998 ◽  
Vol 12 (5) ◽  
pp. 886-890 ◽  
Author(s):  
Minna Vesaluoma ◽  
Päivi Mertaniemi ◽  
Sari Mannonen ◽  
Ilkka Lehto ◽  
Risto Uusitalo ◽  
...  
Keyword(s):  
Aqueous Humour ◽  
Primary Open Angle Glaucoma ◽  
Open Angle Glaucoma ◽  
Open Angle ◽  
Plasma Fibronectin ◽  
Exfoliative Glaucoma ◽  
Cataract Patients

scholarly journals Intraocular pressure control after trabeculectomy in the patients with primary open angle glaucoma and pseudoexfoliative glaucoma followed up for 3 to 5 years

2019 ◽  
Vol 76 (8) ◽  
pp. 822-829
Author(s):  
Vesna Maric ◽  
Vujica Markovic ◽  
Marija Bozic ◽  
Ivan Marjanovic ◽  
Paraskeva Hentova-Sencanic ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Primary Open Angle Glaucoma ◽  
Open Angle Glaucoma ◽  
Survival Curve ◽  
Pressure Control ◽  
Safe Procedure ◽  
Open Angle ◽  
Success Rates ◽  
Pseudoexfoliative Glaucoma ◽  
Significant Difference

Background/Aim. Trabeculectomy is a safe procedure which effectively reduces the intraocular pressure (IOP). IOP is the most frequent indicator of success after glaucoma surgery. The aim of this work was to evaluate the long-term pressure control in primary open-angle glaucoma (POAG) and in pseudoexfoliative glaucoma (XFG) after primary trabeculectomy without the use of mitomycin-C (MMC), 3 to 5 years after trabeculectomy. Methods. This study involved a retrospective evaluation of 332 consecutive patients (352 eyes), 174 patients (188 eyes) with POAG (mean age of 64.0 ? 8.6 years) and 158 patients (164 eyes) with XFG (mean age of 70.7 ? 8.9 years) who underwent primary trabeculectomy between January 2007 and December 2009 at the Clinic for Eye Diseases, Clinical Center of Serbia in Belgrade. A successful control of IOP was defined as achieving IOP ? 21 mmHg without medication (complete success), or with a single topical medication (qualified success). Results. According to the type of glaucoma POAG/XFG preoperative IOP was 28.4 ? 6.3/30.4 ? 8.4 mmHg, respectively (p = 0.311) and last postoperative IOP was 16.9 ? 5.2/18.7 ? 5.9 mmHg, respectively (p = 0.681). According to the Kaplan-Meier survival curve, the complete success in the group with POAG in 1, 3 and 5 years were 85%, 75% and 58% and in the group with XFG were 82%, 70% and 56%, respectively. There was no statistically significant difference in the complete success rates between the patients with POAG and XFG. Conclusion. The primary goal of surgery was to achieve a sufficiently low IOP without additional medication, thus preventing progression of glaucomatous damage. In our study, the complete success in the group with POAG was achieved in 75% and 58% of the patients in the period of 3 and 5 years after surgery, respectively and in the group with XFG complete success was achieved in 70% and 56% of the patients respectively.

The clinical feature of myocilin Y437H mutation in a Chinese family with primary open-angle glaucoma

2019 ◽  
Vol 103 (10) ◽  
pp. 1524-1529
Author(s):  
Lei Lei ◽  
Shushan Li ◽  
Xiangyun Liu ◽  
Chun Zhang
Keyword(s):  
Primary Open Angle Glaucoma ◽  
Open Angle Glaucoma ◽  
Clinical Feature ◽  
Visual Field Defects ◽  
Chinese Family ◽  
Eye Drops ◽  
Open Angle ◽  
Age Related ◽  
Phenotypic Characterisation ◽  
The Mean

PurposeTo characterise the genotype(s), phenotype(s) and age-related penetrance of glaucoma in a Chinese family with primary open-angle glaucoma (POAG).MethodsRecruited from a Chinese family spanning four generations, 7 individuals with POAG, 1 with ocular hypertension (OHT) and 14 unaffected individuals were included in this study. Genotypic investigation included sequencing of mutation sites using a glaucoma panel in combination with high-throughput sequencing and validated using Sanger sequencing. Phenotypic characterisation included investigation into patient medical history and physical examination.ResultsEight (36.4%) family members harboured heterozygous Y437H mutation, of whom seven (87.5%) were glaucomatous and one (12.5%) had OHT. The mean age of POAG diagnosis was 30.85±7.13 years. The mean highest recorded intraocular pressure (IOP) was 46.57±6.53 mm Hg. They all had complained of symptoms associated with vision and pain. Four (57.1%) patients presented blindness. Five eyes (62.5%) presented with severe and three eyes with moderate visual field defects. Most of them underwent surgery on average 1.29±2.36 years after diagnosis, and the mean IOP at study was 17.95±7.23 mm Hg, with an average of 0.92±0.86 eye-drops. The patient with OHT was treated with latanoprost only and her IOP was well controlled. Age-related glaucoma penetrance was 0% in individuals under the age of 20 years, 50% at ages 20–35 years, 75% at ages 31–35 years and 87.5% over 45 years.ConclusionA novel MYOC mutation (c.1309T>C, p.Y437H) in a Chinese family with POAG was identified which was associated with a phenotype characterised by severe visual impairment, frequent surgical intervention requirement and relatively high penetrance.

scholarly journals Binocular integrated visual field deficits are associated with changes in local network function in primary open-angle glaucoma: a resting-state fMRI study

2021 ◽  
Author(s):  
Giorgia Demaria ◽  
Azzurra Invernizzi ◽  
Daniel Ombelet ◽  
Joana Carvalho ◽  
Remco Renken ◽  
...  
Keyword(s):  
Visual Field ◽  
Functional Connectivity ◽  
Resting State ◽  
Primary Open Angle Glaucoma ◽  
Open Angle Glaucoma ◽  
Brain Regions ◽  
Local Network ◽  
Open Angle ◽  
Significant Difference ◽  
Global Brain

Recent brain imaging studies have shown that the degenerative eye damage generally observed in the clinical setting, also extends intracranially. Both structural and functional brain changes have been observed in glaucoma participants, but we still lack an understanding of whether these changes also affect the integrity of cortical functional networks. This is relevant, as functional network integrity may affect the applicability of future treatments, as well as the options for rehabilitation or training. Here, we compare global and local functional connectivity between glaucoma and controls. Moreover, we study the relationship between functional connectivity and visual field (VF) loss. For our study, 20 subjects with primary open angle glaucoma (POAG) and 24 age similar healthy participants were recruited to undergo a complete ophthalmic assessment followed by two resting state (RS) (f)MRI scans. For each scan and for each group, the ROIs with EC values higher than the 95th percentile were considered the most central brain regions (hubs). Hubs for which we found a significant difference in EC in both scans between glaucoma and healthy were considered to provide evidence for network changes. In addition, for each participant, behavioural scores were derived based on the notion that a brain regions hub function might relate to the: 1) sensitivity of the worse eye, indicating disease severity, 2) sensitivity of both eyes combined, with one eye potentially compensating for loss in the other, or 3) difference in eye sensitivity, requiring additional network interactions. By correlating each of these VF scores and the EC values, we assessed whether VF defects could be associated with centrality alterations in POAG. Our results show that no functional connectivity disruptions were found at the global brain level in POAG participants. This indicates that in glaucoma global brain network communication is preserved. Furthermore, a positive correlation was found between the EC value of the Lingual Gyrus, identified as a brain hub, and the behavioral score for the VF sensitivity of both eyes combined. The fact that reduced local network functioning is associated with reduced binocular VF sensitivity suggests the presence of local brain reorganization that has a bearing on functional visual abilities.

scholarly journals The activity of superoxide dismutase and glutathione peroxidase in the humor aquosus of patients with the primary open-angle glaucoma

2003 ◽  
Vol 22 (2) ◽  
pp. 165-168
Author(s):  
Predrag Jovanovic ◽  
Vidosava Djordjevic ◽  
Gordana Zlatanovic ◽  
Lilika Zvezdanovic ◽  
Vladan Cosic
Keyword(s):  
Superoxide Dismutase ◽  
Glutathione Peroxidase ◽  
Primary Open Angle Glaucoma ◽  
Open Angle Glaucoma ◽  
Angle Closure ◽  
Visual Field Defects ◽  
Control Group ◽  
Open Angle ◽  
Primary Angle Closure Glaucoma ◽  
Antioxidative Enzyme Activities

Glaucoma is an optical neuropathy characterized by the excavation of optic disc, visual field defects and, in most cases, higher intraocular pressure. In the pathogenesis of the primary open-angle glaucoma a significant role is given to oxidative stress. The goal of this study is to determine the activity of antioxidative enzymes (superoxide dismutase, SOD and glutathione peroxidase, GPX) in humor aquosus in patients with the primary open-angle glaucoma (POAG) and in patients with the primary angle-closure glaucoma (PACG - control group) before and after the therapy with exogenous antioxidants. The activity of the examined enzymes in humor aquosus of patients with POAG is significantly higher than in humor aquosus of patients with PACG (p<0.001). The exogenous antioxidants diminish the concentration of free radicals resulting in a decrease of antioxidative enzyme activities and point to their possible use in glaucoma therapy (as a complementary).

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