RGD Reference Report - Role of the adrenergic system in a mouse model of oxygen-induced retinopathy: antiangiogenic effects of beta-adrenoreceptor blockade. - Rat Genome Database

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Role of the adrenergic system in a mouse model of oxygen-induced retinopathy: antiangiogenic effects of beta-adrenoreceptor blockade.

Authors: Ristori, C  Filippi, L  Dal Monte, M  Martini, D  Cammalleri, M  Fortunato, P  La Marca, G  Fiorini, P  Bagnoli, P 
Citation: Ristori C, etal., Invest Ophthalmol Vis Sci. 2011 Jan 5;52(1):155-70. Print 2011 Jan.
RGD ID: 5684355
Pubmed: PMID:20739470   (View Abstract at PubMed)
DOI: DOI:10.1167/iovs.10-5536   (Journal Full-text)

PURPOSE: Oxygen-induced retinopathy (OIR) is a model for human retinopathy of prematurity (ROP). In OIR mice, this study determined whether blockade of beta-adrenergic receptors (beta-ARs) with propranolol influences retinal levels of proangiogenic factors, retinal vascularization, and blood-retinal barrier (BRB) breakdown. METHODS: Propranolol was administered subcutaneously and picropodophyllin (PPP) intraperitoneally. Intravitreal injections of vascular endothelial growth factor (VEGF) were performed. Messengers of beta-ARs, VEGF, its receptors, IGF-1 and IGF-1R were measured with quantitative RT-PCR. VEGF content was determined with ELISA. beta-ARs, hypoxia-inducible factor (HIF)-1alpha, occludin, and albumin were measured with Western blot. Retinal localization of beta3-ARs was determined by immunohistochemistry. Retinopathy was assessed by scoring fluorescein-perfused retinas, and plasma extravasation was visualized by Evans blue dye. RESULTS: Hypoxia did not influence beta-AR expression, except that it increased beta3-AR protein with dense beta3-AR immunoreactivity localized to engorged retinal tufts. Hypoxia upregulated VEGF, IGF-1, their receptors, and HIF-1alpha. Propranolol dose-dependently reduced upregulated VEGF and decreased hypoxic levels of IGF-1 mRNA and HIF-1alpha. Blockade of IGF-1R activity with PPP did not influence propranolol's effects on VEGF. Retinal VEGF in normoxic mice or VEGF in brain, lungs, and heart of the OIR mice were unaffected by propranolol. Propranolol ameliorated the retinopathy score, restored occludin and albumin, and reduced hypoxia-induced plasma extravasation without influencing the vascular permeability induced by intravitreal VEGF. CONCLUSIONS: This is the first demonstration that beta-AR blockade is protective against retinal angiogenesis and ameliorates BRB dysfunction in OIR. Although the relevance of these results to infant ROP is uncertain, the findings may help to establish potential pharmacologic targets based on beta3-AR pharmacology.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
ADRB3Humanretinopathy of prematurity  ISOAdrb3 (Mus musculus)protein:increased expression:retina (mouse)RGD 
Adrb3Ratretinopathy of prematurity  ISOAdrb3 (Mus musculus)protein:increased expression:retina (mouse)RGD 
Adrb3Mouseretinopathy of prematurity  IEP protein:increased expression:retina (mouse)RGD 

Objects Annotated

Genes (Rattus norvegicus)
Adrb3  (adrenoceptor beta 3)

Genes (Mus musculus)
Adrb3  (adrenergic receptor, beta 3)

Genes (Homo sapiens)
ADRB3  (adrenoceptor beta 3)


Additional Information