Elevated angiopoietin 2 in aqueous of patients with neovascular age related macular degeneration correlates with disease severity at presentation

Angiopoietin 2 (ANG2) is a proangiogenic cytokine which may have an implication in neovascular age related macular degeneration (nAMD). In 24 eyes of 24 subjects presenting with treatment naïve nAMD and 26 eyes of 26 control patients, aqueous humor samples were collected at the time of intervention...

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Veröffentlicht in:Scientific reports 2017-03, Vol.7 (1), p.45081-45081, Article 45081
Hauptverfasser: Ng, Danny S., Yip, Yolanda W., Bakthavatsalam, Malini, Chen, Li J., Ng, Tse K., Lai, Timothy Y., Pang, Calvin P., Brelén, Mårten E.
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container_title Scientific reports
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creator Ng, Danny S.
Yip, Yolanda W.
Bakthavatsalam, Malini
Chen, Li J.
Ng, Tse K.
Lai, Timothy Y.
Pang, Calvin P.
Brelén, Mårten E.
description Angiopoietin 2 (ANG2) is a proangiogenic cytokine which may have an implication in neovascular age related macular degeneration (nAMD). In 24 eyes of 24 subjects presenting with treatment naïve nAMD and 26 eyes of 26 control patients, aqueous humor samples were collected at the time of intervention (intravitreal injection of anti-vascular endothelial growth factor or cataract extraction). Best corrected visual acuity (BCVA) with and central macular thickness (CMT) using optical coherence tomography (OCT) were measured before each injection in the nAMD group. Aqueous cytokine levels were determined by immunoassay using a multiplex array (Quansys Biosciences, Logan, UT). Levels of ANG2 in the aqueous were significantly higher in nAMD patients than those of the control group (p 
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In 24 eyes of 24 subjects presenting with treatment naïve nAMD and 26 eyes of 26 control patients, aqueous humor samples were collected at the time of intervention (intravitreal injection of anti-vascular endothelial growth factor or cataract extraction). Best corrected visual acuity (BCVA) with and central macular thickness (CMT) using optical coherence tomography (OCT) were measured before each injection in the nAMD group. Aqueous cytokine levels were determined by immunoassay using a multiplex array (Quansys Biosciences, Logan, UT). Levels of ANG2 in the aqueous were significantly higher in nAMD patients than those of the control group (p &lt; 0.0001), so were hepatocyte growth factor (HGF), interleukin-8 (IL-8) and tissue inhibitor of metalloproteinase 1 (TIMP 1), all with p &lt; 0.001. ANG2 correlated with worse BCVA (r = 0.44, p-value = 0.027) and greater CMT (r = 0.66, p-value &lt; 0.0001) on optical coherence tomography (OCT). 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In 24 eyes of 24 subjects presenting with treatment naïve nAMD and 26 eyes of 26 control patients, aqueous humor samples were collected at the time of intervention (intravitreal injection of anti-vascular endothelial growth factor or cataract extraction). Best corrected visual acuity (BCVA) with and central macular thickness (CMT) using optical coherence tomography (OCT) were measured before each injection in the nAMD group. Aqueous cytokine levels were determined by immunoassay using a multiplex array (Quansys Biosciences, Logan, UT). Levels of ANG2 in the aqueous were significantly higher in nAMD patients than those of the control group (p &lt; 0.0001), so were hepatocyte growth factor (HGF), interleukin-8 (IL-8) and tissue inhibitor of metalloproteinase 1 (TIMP 1), all with p &lt; 0.001. ANG2 correlated with worse BCVA (r = 0.44, p-value = 0.027) and greater CMT (r = 0.66, p-value &lt; 0.0001) on optical coherence tomography (OCT). ANG2 is upregulated in patients with nAMD and correlates with severity of disease at presentation.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>28345626</pmid><doi>10.1038/srep45081</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record>
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subjects 631/45/127
692/699/3161/1626
Acuity
Aged
Aged, 80 and over
Angiopoietin
Angiopoietin-2 - metabolism
Aqueous Humor - metabolism
Biomarkers - metabolism
Case-Control Studies
Cataracts
Cytokines
Female
Growth factors
Hepatocyte growth factor
Hepatocyte Growth Factor - metabolism
Humanities and Social Sciences
Humans
Injection
Interleukin 8
Interleukin-8 - metabolism
Macular degeneration
Macular Degeneration - metabolism
Macular Degeneration - pathology
Male
Metalloproteinase
Middle Aged
multidisciplinary
Science
Tissue inhibitor of metalloproteinase 1
Tissue Inhibitor of Metalloproteinase-1 - metabolism
Tomography
Vascular endothelial growth factor
Visual Acuity
title Elevated angiopoietin 2 in aqueous of patients with neovascular age related macular degeneration correlates with disease severity at presentation
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