Vascular Endothelial Growth Factor (VEGF) in Uveitis
This study will look for the presence in blood of a substance called vascular endothelial growth factor (VEGF) in patients with uveitis (eye inflammation). It will also look for this substance in eye fluid samples taken from patients with uveitis who are undergoing eye surgery.
Some patients with uveitis experience some vision loss during an inflammatory attack because of swelling (edema) in a particular area of the retina called the macula, which is involved in visual acuity. It may be that VEGF is involved in the development of macular edema.
Patients with uveitis who participate in this study will have about 10 cc (2 teaspoons) of blood drawn to be examined for VEGF. They will also undergo a procedure called fluorescein angiography to look at the blood vessels of the eye. A dye called sodium fluorescein is injected into the blood stream through a vein. After the dye reaches the blood vessels of the eye, photographs are taken of the retina.
In addition, patients with uveitis who are undergoing eye surgery will have a tissue specimen (either aqueous fluid or vitreous gel) collected for examination for the presence of VEGF.
Increased intraocular and systemic levels of the angiogenic factor vascular endothelial growth factor (VEGF) is associated with new vessel growth in the eye, such as diabetic retinopathy. Recent work using immunopathologic techniques have shown that VEGF is upregulated in both experimentally induced uveitis and in uveitic eyes as well, with no evidence of neovascularization. This pilot study will evaluate the level of VEGF in the blood of uveitic patients with and without macular edema. This level will be determined also in the ocular fluid of those patients that are undergoing ocular surgery. These levels will be compared with age and sex matched controls.
Macular Edema, Cystoid
National Eye Institute (NEI)
National Institutes of Health Clinical Center (CC)
Results (where available)
- Source: http://clinicaltrials.gov/show/NCT00001738
- Information obtained from ClinicalTrials.gov on July 15, 2010
Cystoid macular edema (CME) is one of the common causes of vision loss in patients with UveitiS .Triamcinolone has been effectively used in reducing CME and improving the vision. Also the...
To test the efficacy of acetazolamide for the treatment of uveitis-associated cystoid macular edema.
This research is being done to look at the effects of Bromfenac, also called Xibrom for the treatment of swelling in the retina (the light sensitive tissue in the back of the eye) called "...
The purpose of this study is to investigate the safety and tolerability of three dose strengths of the study drug in subjects with post cataract extraction macular edema.
The study will evaluate the efficacy of prophylactic administration of the topical nonsteroidal anti-inflammatory drug (NSAID) ketorolac tromethamine 0.5% (Acular®) on cystoid macular ede...
Recently, many authors have propagated the notion that a specific form of "microcystic macular edema" occurs in patients with optic neuritis and optic atrophy of various etiology and is due to retrogr...
The use of anti-tumor necrosis factor (TNF)-α agents for uveitis has been increasing since the first efficacy studies in 2004. However, information on their specific role in cystic macular edema rema...
In this article we herein report an interesting vitreo-macular interface abnormality associated with chronic diabetic cystoid macular edema. It is an observational case study of three diabetic patient...
To study prognostic spectral domain optical coherence tomography parameters in diabetic cystoid macular edema after anti-vascular endothelial growth factor therapy.
Bietti crystalline retinal dystrophy is a rare, inherited disorder whose hallmark is the presence of retinal crystal deposits associated with later chorioretinal degeneration. This condition may rarel...
Medical and Biotech [MESH] Definitions
Fluid accumulation in the outer layer of the MACULA LUTEA that results from intraocular or systemic insults. It may develop in a diffuse pattern where the macula appears thickened or it may acquire the characteristic petaloid appearance referred to as cystoid macular edema. Although macular edema may be associated with various underlying conditions, it is most commonly seen following intraocular surgery, venous occlusive disease, DIABETIC RETINOPATHY, and posterior segment inflammatory disease. (From Survey of Ophthalmology 2004; 49(5) 470-90)
A form of MACULAR DEGENERATION also known as dry macular degeneration marked by occurrence of a well-defined progressive lesion or atrophy in the central part of the RETINA called the MACULA LUTEA. It is distinguishable from WET MACULAR DEGENERATION in that the latter involves neovascular exudates.
Specialized ophthalmic technique used in the surgical repair and or treatment of disorders that include retinal tears or detachment; MACULAR HOLES; hereditary retinal disease; AIDS-related retinal infections; ocular tumors; MACULAR DEGENERATION; DIABETIC RETINOPATHY; and UVEITIS.
Abnormal fluid accumulation in TISSUES or body cavities. Most cases of edema are present under the SKIN in SUBCUTANEOUS TISSUE.
An acute disease of young pigs that is usually associated with weaning. It is characterized clinically by paresis and subcutaneous edema.