Journals / Türk Oftalmoloji Dergisi / 2008 / Cilt: 38 - Sayı: 4

Role of oxidative stress in patients with primary open angle glaucoma and senil cataract

Primer açık açılı glokomlu ve senil kataraktlı hastalarda oksidatif stresin rolü

Pages
292–297
Publication Date
2022-11-05
DOI
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CONCLUSION: In patients with POAG or SC,plasma levels of potential antioxidant indicators were found lower than control group and free radical metabolism products higher than control group.These results suggests that oxidative stress may be playing a role in pathogenesis of both of these two diseases.

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Objective & Hypothesis:PURPOSE: Contribution of oxidative stress in various ocular disorders is known.In our study,the role of oxidative stress in patients with primary open angle glaucoma (POAG) and senile cataract (SC) was investigated.For this purpose, the products of free radical metabolism and activities of antioxidant enzymes in blood plasma and aqueous humor were measured.
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Key Findings & Data:MATERIAL-METHODS: In 27 patients with POAG and 25 patients with SC,blood plasma before surgery and aquous humor at the time of surgery were obtained.Malondialdehyde (MDH),reduced glutathion(GSH) and glutathione peroxidase(G-Px) was studied with spectrophotometrically in plasma; 8-hydroxydeoxyguanosine (8 OH-dG) was measured with ELISA method.This values were compared with results of 28 age matched healthy individuals.On the other hand,in aqueous humor,which is obtained from eyes with glaucoma and/or cataract,8OH-dG levels were measured.In all three groups,age and gender comparison was made with Chi-square test;differences of MDA,GSH,G-Px and 8OH-dG levels were studied with unpaired t-test.Significance level was accepted as p0.05).In patients with either POAG or SC,the level of GSH and G-Px,which are the indicators of antioxidant potential,was found half and 1/3 of the level of control group, respectively.The levels of MDA and 8OH-dG, which are free radical metabolits, in patients with glaucoma and/or cataract almost twice the level in control group(p0.05).
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Conclusion & Impact:CONCLUSION: In patients with POAG or SC,plasma levels of potential antioxidant indicators were found lower than control group and free radical metabolism products higher than control group.These results suggests that oxidative stress may be playing a role in pathogenesis of both of these two diseases.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

PURPOSE: Contribution of oxidative stress in various ocular disorders is known.In our study,the role of oxidative stress in patients with primary open angle glaucoma (POAG) and senile cataract (SC) was investigated.For this purpose, the products of free radical metabolism and activities of antioxidant enzymes in blood plasma and aqueous humor were measured. MATERIAL-METHODS: In 27 patients with POAG and 25 patients with SC,blood plasma before surgery and aquous humor at the time of surgery were obtained.Malondialdehyde (MDH),reduced glutathion(GSH) and glutathione peroxidase(G-Px) was studied with spectrophotometrically in plasma; 8-hydroxydeoxyguanosine (8 OH-dG) was measured with ELISA method.This values were compared with results of 28 age matched healthy individuals.On the other hand,in aqueous humor,which is obtained from eyes with glaucoma and/or cataract,8OH-dG levels were measured.In all three groups,age and gender comparison was made with Chi-square test;differences of MDA,GSH,G-Px and 8OH-dG levels were studied with unpaired t-test.Significance level was accepted as p0.05).In patients with either POAG or SC,the level of GSH and G-Px,which are the indicators of antioxidant potential,was found half and 1/3 of the level of control group, respectively.The levels of MDA and 8OH-dG, which are free radical metabolits, in patients with glaucoma and/or cataract almost twice the level in control group(p0.05). CONCLUSION: In patients with POAG or SC,plasma levels of potential antioxidant indicators were found lower than control group and free radical metabolism products higher than control group.These results suggests that oxidative stress may be playing a role in pathogenesis of both of these two diseases.

Özet

AMAÇ: Oksidatif stresin çeşitli göz hastalıklarının oluşumuna katkısı bilinmektedir. Çalışmamızda primer açık açılı glokomlu (PAAG) ve senil kataraktlı (SK) hastalarda oksidatif stresin etkisi araştırıldı. Bu amaçla kan plazması ve ön kamara sıvısında serbest radikal metabolizma ürünleri ile antioksidan enzim aktiviteleri ölçüldü MATERYAL-METOD: PAAG’lu 27 ve SK’lı 25 hastanın cerrahi uygulama öncesi kan plazması ve cerrahi sırasında ön kamara sıvısı alındı. Kan plazmasında MDA, GSH, G-Px ölçümleri spektrofotometrik yöntemle; 8 OH-dG değerleri ELİSA ile tayin edildi. Bu değerler yaş grubu uygun 28 sağlıklı bireyin sonuçları ile karşılaştırıldı. Diğer taraftan glokomlu ve kataraktlı gözlerden alınan ön kamara sıvısında 8 OH-dG değerleri ELISA ile ölçüldü. Her 3 grupta yaş, cinsiyet karşılaştırılması ki-kare testi ile; MDA, GSH, G-Px ve 8 OH-dG değerleri farkı eşlendirilmemiş t testi kullanılarak incelendi. Anlamlılık sınırı p0,05). Gerek PAAG’lu ve gerekse SK’lı hastalarda antioksidan potansiyelin belirteçlerinden GSH değeri kontrol bireylerden yaklaşık 2 kat, G-Px aktivitesi ise 3 kat daha düşük bulundu. Serbest radikal metabolitleri olan MDA ve 8 OH-dG değerleri ise glokom ve katarakt hastalarında sağlıklı kontrol grubundan yaklaşık 2 kat daha fazla idi (p0,05). YORUM: PAAG’lu ve SK’lı hastalarda kan plazmasında antioksidan potansiyel belirteçleri sağlıklı kontrollerden daha düşük; serbest radikal metabolizma ürünleri daha yüksek düzeylerde ölçüldü. Bu sonuçlar her iki hastalığın etyopatogenezinde oksidatif hasarın rol oynayabildiğini düşündürmektedir.

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Cite This Article

AKÇAY, T., BALCI, H., DİNÇER, Y., OCAKOĞLU, Ö., UÇAR, D., ÖZKÖK, A., KOÇ, E. E. (2022). Role of oxidative stress in patients with primary open angle glaucoma and senil cataract. Türk Oftalmoloji Dergisi, Cilt: 38 - Sayı: 4, 292–297. https://ajindex.com/articles/638609

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References (15)

  1. Halliwell B, Gutterridge J. Free radicals in biology an medicine 3rd. Ed. New York: Oxfords University Pres Inc. 1989:1-35
  2. Tezel G. Oxidative Stress in Glaucomatous Neurodege neration: Mechanisms and Consequences Prog Retin Ey Res. 2006; 25(5): 490-513
  3. Sies H. Oxidative Stress. San Diego Academic Press 1985: 1-7
  4. Bokov A, Chaudhuri A, Richardson A. The role of oxida tive damage and stress in aging. Mech Ageing Dev 2004;125:811-826
  5. Moriarty-Craige SE, Adkinson J, Lynn M, et al. Antiox dant supplements prevent oxidation of cysteine/cystin redox in patients with age-related macular degeneration Am J Ophthalmol. 2005;140:1020-1026
  6. Zoric L, Miric D, Milenkovic S, Jovanovic P, Trajkovi G. Pseudoexfoliation syndrome and its antioxidative pro tection deficiency as risk factors for age-related catarac Eur J Ophthalmol. 2006 Mar-Apr;16(2):268-73
  7. Ferreira SM, Lerner SF, Brunzini R, Evelson PA, Llesu SF. Oxidative stress markers in aqueous humor of glau coma patients. Am J Ophthalmol. 2004 Jan;137(1):62-9
  8. Pryor WB,Godber SS. Noninvasive measures of oxidati- ve stres status in humans Free Rad Biol Med 1991; 10: 177-184
  9. Lissi E, Salim-Hanna M, Pascual C, Del Castillo M. Eva- luation of total antioxidant potential (TRAP) and total an- tioxidant reactivity from luminol enhanced chemilumi- nencense measurements Free Rad Biol Med 1995; 18: 153-158
  10. Stifter E, Sacu S, Benesch T, Weghaupt H. Impairment of visual acuity and reading performance and the relations- hip with cataract type and density. Invest Ophthalmol Vis Sci. 2005; 46(6):2071-5
  11. Gherghel D, Griffiths HR, Hilton EJ, Cunliffe IA, Hos- king SL.Systemic reduction in glutathione levels occurs in patients with primary open-angle glaucoma. Invest Ophthalmol Vis Sci. 2005 Mar;46(3):877-83
  12. Faschinger C, Schmut O, Wachswender C, Mossböck G. [Glaucoma and oxidative stress. Determination of malon- dialdehyde--a product of lipid peroxidation] Ophthalmo- loge. 2006 Nov;103(11):953-9
  13. Yildirim O, Atefl NA, Ercan B, Mufllu N, Unlü A, Tamer L, Atik U, Kanik A.Role of oxidative stress enzymes in open-angle glaucoma Eye. 2005 May;19(5):580-3
  14. Saccà SC, Pascotto A, Camicione P, Capr is P, Izzotti A.Oxidative DNA damage in the human trabecular mesh- work: clinical correlation in patients with primary open- angle glaucoma. Arch Ophthalmol. 2005 Apr;123(4):458-63. 15
  15. Ohkawa H, Ohishi N, Yagi K. Assay for lipid peroxi- des in animal tissues by thiobarbituric acid reaction.Anal B