Ratio of the vitreous vascular endothelial growth factor and pigment epithelial-derived factor in Eales diseaseReport as inadecuate




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Journal of Ocular Biology, Diseases, and Informatics

, Volume 2, Issue 1, pp 20–28

First Online: 06 March 2009Received: 13 November 2008Accepted: 16 February 2009

Abstract

Eales disease ED is an idiopathic inflammatory venous occlusion of the peripheral retina.
As neovascularization is prominent in ED, this study attempts to look at the ratio of VEGF, the angiogenic factor, and PEDF, an anti-angiogenic factor in the vitreous of ED patients in comparison with the macular hole MH and Proliferative Diabetic Retinopathy PDR.
Vitreous levels of VEGF and PEDF were determined in the undiluted vitreous specimen obtained from 26 ED cases, 17 PDR, and seven patients with MH.
The vitreous levels of VEGF and PEDF were estimated by ELISA.
The immunohistochemistry IHC for VEGF and PEDF were done in the epiretinal membrane of ED and PDR case.
The VEGF-PEDF ratio was found to be significantly increased in ED p = 0.014 and PDR p = 0.000 compared to MH.
However the ratio was 3.5-fold higher in PDR than ED p = 0.009.
The IHC data on the ERM specimen from ED showed the presence of VEGF and PEDF similar to PDR.
The high angiogenic potential seen as the ratio of VEGF-PEDF correlates with the peak clinical onset of the disease in the age group 21–30 years and the diseases usually self-resolves above the age of 40, which is reflected by the low ratio of VEGF-PEDF.
The study shows that the VEGF-PEDF ratio is significantly increased in ED though the angiogenic potential is higher in PDR than in ED.
Clinically Eales Disease is known as a self-limiting disease, while PDR is a progressive disease.

KeywordsVEGF PEDF Ratio Eales disease Proliferative diabetic retinopathy An erratum to this article can be found at http:-dx.doi.org-10.1007-s12177-009-9022-x

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Author: Narayanasamy Angayarkanni - Radhakrishnan Selvi - Rishi Pukhraj - Jyotirmoy Biswas - Shah J. Bhavesh - Joyce Tombran-Tink

Source: https://link.springer.com/



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