Role of Soluble Vascular Endothelial Growth Factor Receptor-1 in the Vitreous in Proliferative Diabetic Retinopathy

Ophthalmology ◽  
2008 ◽  
Vol 115 (11) ◽  
pp. 1916-1922 ◽  
Author(s):  
Nozomu Matsunaga ◽  
Yuichi Chikaraishi ◽  
Hiroshi Izuta ◽  
Nahoko Ogata ◽  
Masamitsu Shimazawa ◽  
...  
Author(s):  
Amr Ali El-Sehrawy ◽  
Enas M Elkhamisy ◽  
Amani E Badawi ◽  
Heba A Elshahawy ◽  
Eman Elsayed ◽  
...  

Background: Considering the vital role of vascular endothelial growth factor (VEGF) in the development of diabetic retinopathy (DR) in one hand and the frequent association between subclinical hypothyroidism (SCH) and DR on the other hand. Objective: The present study was proposed to explore the possible role of VEGF in the relation between SCH and DR, thus we investigated the relation between SCH and VEGF levels in patients with DR. Methods: Two hundred patients with DR were recruited in this study [100 patients with proliferative diabetic retinopathy (PDR) and 100 patients with non-proliferative diabetic retinopathy (NPDR)]. Patients with DR were divided into 2 groups according to thyroid function: patients with SCH or those with euthyroidism. Patients were subjected to careful history taking, and underwent clinical and ophthalmological examination. Fasting blood glucose, glycosylated hemoglobin, fasting insulin, homeostasis model assessment of insulin resistance (HOMA-IR), TSH, FT4, FT3, VEGF and thyroid volume were assessed Results: Among all the studied patients, 21.5% (43/200) had SCH. DR patients with SCH had higher age, diabetes duration, HbA1c, HOMA-IR and VEGF than those with euthyroidism. The frequency of PDR in patients with SCH was 72.1% (31/43) and 43.9% (69/157) in those with euthyroidism, whereas the frequency of NPDR in patients with SCH was 27.9 (12/43) and 56.1% (88/157) in those with euthyroidism (P < 0.003). In multivariate analysis, PDR, HOMA-IR and VEGF levels were the significant predictor variables of SCH. Conclusions: Increased VEGF levels may be implicated in the relationship between SCH and DR.


2017 ◽  
Vol 30 (7-8) ◽  
pp. 513 ◽  
Author(s):  
David Cordeiro Sousa ◽  
Inês Leal ◽  
João Costa ◽  
António Vaz-Carneiro

Postoperative vitreous hemorrhage is a complication following vitrectomy for proliferative diabetic retinopathy, delaying visual recovery and making fundus examination and disease follow-up more difficult. Anti-vascular endothelial growth factor drugs such as bevacizumab, when injected in the vitreous cavity, reduce vascular proliferation and their use has been proposed to reduce the incidence of postoperative vitreous hemorrhage. The authors of this Cochrane systematic review evaluated all randomized controlled trials on the pre- or intraoperative use of anti-vascular endothelial growth factor to reduce postoperative vitreous hemorrhage occurrence after vitrectomy in patients with proliferative diabetic retinopathy. The results suggested that the use of intravitreal bevacizumab was effective in reducing early postoperative vitreous hemorrhage (i.e. at four weeks) occurrence, with a good safety profile. This work aims to summarize and discuss the findings and clinical implications of this Cochrane systematic review.


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