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Relationship between vitreous levels of matrix metalloproteinases and vascular endothelial growth factor in proliferative diabetic retinopathy

To investigate which matrix metalloproteinases (MMPs) are more likely to be involved in the angiogenic process in proliferative diabetic retinopathy (PDR), we measured the levels of MMPs in the vitreous fluid from patients with PDR and controls and correlated these levels with the levels of vascular...

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Published in:PloS one 2013-12, Vol.8 (12), p.e85857-e85857
Main Authors: Abu El-Asrar, Ahmed M, Mohammad, Ghulam, Nawaz, Mohd Imtiaz, Siddiquei, Mohammad Mairaj, Van den Eynde, Kathleen, Mousa, Ahmed, De Hertogh, Gert, Opdenakker, Ghislain
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cited_by cdi_FETCH-LOGICAL-c758t-5c2ac671349290597609f4fd234d6fec30260ddf31d94320e6bd4068916072993
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creator Abu El-Asrar, Ahmed M
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Opdenakker, Ghislain
description To investigate which matrix metalloproteinases (MMPs) are more likely to be involved in the angiogenic process in proliferative diabetic retinopathy (PDR), we measured the levels of MMPs in the vitreous fluid from patients with PDR and controls and correlated these levels with the levels of vascular endothelial growth factor (VEGF). Vitreous samples from 32 PDR and 24 nondiabetic patients were studied by mosaic multiplex MMPs enzyme-linked immunosorbent assay (ELISA), single ELISA, Western blot and zymography analysis. Epiretinal membranes from 11 patients with PDR were studied by immunohistochemistry. MMP-8 and MMP-13 were not detected. ELISA, Western blot and gelatin ymography assays revealed significant increases in the expression levels of MMP-1, MMP-7, MMP-9 and VEGF in vitreous samples from PDR patients compared to nondiabetic controls, whereas MMP-2 and MMP-3 were not upregulated in vitreous samples from PDR patients. Significant correlations existed between ELISA and zymography assays for the quantitation of MMP-2 (r=0.407; p=0.039) and MMP-9 (r=0.711; p
doi_str_mv 10.1371/journal.pone.0085857
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Vitreous samples from 32 PDR and 24 nondiabetic patients were studied by mosaic multiplex MMPs enzyme-linked immunosorbent assay (ELISA), single ELISA, Western blot and zymography analysis. Epiretinal membranes from 11 patients with PDR were studied by immunohistochemistry. MMP-8 and MMP-13 were not detected. ELISA, Western blot and gelatin ymography assays revealed significant increases in the expression levels of MMP-1, MMP-7, MMP-9 and VEGF in vitreous samples from PDR patients compared to nondiabetic controls, whereas MMP-2 and MMP-3 were not upregulated in vitreous samples from PDR patients. Significant correlations existed between ELISA and zymography assays for the quantitation of MMP-2 (r=0.407; p=0.039) and MMP-9 (r=0.711; p&lt;0.001). Significant correlations were observed between levels of VEGF and levels of MMP-1 (r=0.845; P&lt;0.001) and MMP-9 (r=0.775; p&lt;0.001), and between levels of MMP-1 and MMP-9 (r=0.857; p&lt;0.001). In epiretinal membranes, cytoplasmic immunoreactivity for MMP-9 was present in vascular endothelial cells and stromal monocytes/macrophages and neutrophils. Our findings suggest that among the MMPs measured, MMP-1 and MMP-9 may contribute to the angiogenic switch in PDR.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>24392031</pmid><doi>10.1371/journal.pone.0085857</doi><tpages>e85857</tpages><oa>free_for_read</oa></addata></record>
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subjects Analysis
Angiogenesis
Assaying
Cancer
Cell adhesion & migration
Collagenase 3
Consent
Correlation
Diabetes
Diabetes mellitus
Diabetic retinopathy
Diabetic Retinopathy - complications
Diabetic Retinopathy - enzymology
Diabetic Retinopathy - metabolism
Diabetic Retinopathy - pathology
Endothelial cells
Enzyme-linked immunosorbent assay
Enzymes
Gelatin
Gelatinase A
Gelatinase B
Hemorrhage
Histology
Humans
Immunohistochemistry
Interstitial collagenase
Laboratories
Leukocytes (neutrophilic)
Macrophages
Matrilysin
Matrix metalloproteinase
Matrix metalloproteinases
Matrix Metalloproteinases - metabolism
Medical research
Medical schools
Medicine
Membranes
Monocytes
Multiplexing
Neovascularization, Pathologic - complications
Neutrophil collagenase
Neutrophils
Patients
Quantitation
Retinopathy
Vascular endothelial growth factor
Vascular Endothelial Growth Factor A - metabolism
Vitreous Body - enzymology
Vitreous Body - metabolism
title Relationship between vitreous levels of matrix metalloproteinases and vascular endothelial growth factor in proliferative diabetic retinopathy
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