Abstract：
:Erythropoietin (EPO) plays a critical role in the vascular system and exhibits angiogenic activity in endothelial cells (ECs) such as stimulation of cell proliferation, migration and tube formation in vitro. EPO is the major regulator of cell proliferation and differentiation of erythroid precursors and there by preventing the apoptosis. Pigment epithelial derived factor (PEDF) is a potent anti-angiogenic factor whose effects are partially mediated through the induction of EC apoptosis. The mechanism of EPO and PEDF in retinal neovascularization has not been well documented yet. The effect of EPO and PEDF on cell proliferation was determined by MTT assay. In vitro wound-scratch assay was performed to study the migration of ECs and in vitro tube formation was assessed by the on-gel assay system using gelatin. Inhibitor assay was carried out using LY294002, a phosphatidylinositol 3-kinase (PI3K) inhibitor. Further, PI3K/Akt activity was assessed by transient transfection assay using constitutively active (CA) and dominant negative (DN) Akt mutants. Dextran permeability assay was performed to determine the vascular permeability. We report that EPO stimulates EC proliferation, migration, tube formation and permeability whereas PEDF inhibits the EPO-induced ECs proliferation and permeability. Over expression of DN Akt blocked EPO stimulation of proliferation and permeability, while over expression of CA Akt rescues the inhibitory effect of PEDF on proliferation and permeability. These results demonstrate that PEDF may inhibit the EPO-induced proliferation and permeability via PI3K/Akt-dependent pathway.
journal_name
Exp Eye Resjournal_title
Experimental eye researchauthors
Haribalaganesh R,Sheikpranbabu S,Banumathi E,Gurunathan Sdoi
10.1016/j.exer.2010.03.005subject
Has Abstractpub_date
2010-06-01 00:00:00pages
726-33issue
6eissn
0014-4835issn
1096-0007pii
S0014-4835(10)00080-1journal_volume
90pub_type
杂志文章,收录出版abstract：:Aceclidine can dissociate accommodative and outflow facility responses in monkeys and humans. We sought to determine if different muscarinic receptor subtypes control outflow facility, accommodative and pupillary responses to aceclidine in the living rhesus monkey eye, as a possible basis for this separation. Each eye...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1994.1057
更新日期：1994-05-01 00:00:00
abstract：:Certain mutations in optineurin (gene OPTN) are associated with primary open angle glaucoma. Optineurin is ubiquitously expressed but it shows high level of expression in certain cells and tissues including retinal ganglion cells. It interacts with many proteins, often acting as an adaptor to link two or more proteins...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2015.08.020
更新日期：2016-03-01 00:00:00
abstract：:The function of acetylcholinesterase (AChE) is to terminate the action of acetylcholine at the cholinergic synapse. Recent evidence suggests additional roles for acetylcholinesterase as a peptidase and/or a protease which is expressed by growing neurites as part of their invasion of developing neural structures. We re...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(95)80001-8
更新日期：1995-02-01 00:00:00
abstract：:Post-translational modifications and/or structural changes induced by modifications are likely causes of the decrease in crystallin solubility associated with aging and the development of cataract. Characterization of human lens crystallins by mass spectrometry has demonstrated that betaB2-crystallin undergoes less mo...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.2001.1023
更新日期：2001-08-01 00:00:00
abstract：:The following lectins: Con A, WGA, sWGA, PNA, RCA and UEA were used to study developmental changes in the expression of glycoconjugates during chicken lens morphogenesis. Con A, WGA, sWGA binding epitopes were observed in the lens placode and vesicle. Once the fiber mass was formed, the glycoconjugates were mainly fou...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1996.0047
更新日期：1996-04-01 00:00:00
abstract：:The R49C mutation of alphaA-crystallin (alphaA-R49C) causes hereditary cataracts in humans; patients in a four-generation Caucasian family were found be heterozygous for this autosomal dominant mutation. We previously generated knock-in mouse models of this mutation and found that by 2 months of age, heterozygous muta...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2010.02.009
更新日期：2010-06-01 00:00:00
abstract：:RPE65-related Leber's congenital amaurosis (LCA) is a rod-cone dystrophy whose clinical outcome is mainly attributed to the loss of rod photoreceptors followed by cone degeneration. Pathogenesis in Rpe65(-/-) mice is characterized by a slow and progressive degeneration of rods dependent on the constitutive activation ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2011.12.019
更新日期：2012-03-01 00:00:00
abstract：:Tissue transglutaminase (tTG) is a Ca(2+)-dependent enzyme catalyzing the formation of covalent crosslinks between peptide-bound glutamine and lysine residues. Lens crystallins, including alphaB-crystallin and several beta-crystallins, are in vitro substrates for tTG. In both human and bovine fetal lens extracts treat...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2007.11.011
更新日期：2008-02-01 00:00:00
abstract：:The effect of a 'soft' anti-inflammatory corticosteroid on the corneal wound healing was investigated in rabbits. Albino rabbits were treated with soft steroid and dexamethasone after linear perforating corneal incision. Soft drug design is aimed to control and direct the drug activity and in vivo metabolism to nontox...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(90)90229-n
更新日期：1990-02-01 00:00:00
abstract：:The identification of genes that modify pathological ocular phenotypes in mouse models may improve our understanding of disease mechanisms and lead to new treatment strategies. Here, we identify modifier loci affecting photoreceptor cell loss in homozygous Mfrp(rd6) mice, which exhibit a slowly progressive photorecept...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2013.10.020
更新日期：2014-01-01 00:00:00
abstract：:Familial exudative vitreoretinopathy (FEVR) is a disease exhibits a wide range of clinical signs, ranging mild peripheral retinal vascular anomalies to severe retinal detachments. Individuals with mild FEVR are frequently asymptomatic with good visual function and are often undiagnosed. However, little is known about ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2020.107941
更新日期：2020-03-01 00:00:00
abstract：:Utilizing a human beta-actin promoter, a catalase cDNA expression vector was constructed. This construct was used to transfect two immortal cell lines, mouse alpha TN4-1 and rabbit N/N 1003A. The catalase activity was increased about 3.4 fold in the alpha TN4-1 cells and 38 fold in the N/N 1003A cells. Some changes in...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1998.0560
更新日期：1998-12-01 00:00:00
abstract：:The purpose of this investigation is to characterize parvalbumin-immunoreactive (IR) neurons in the inner nuclear layer (INL) of zebrafish retina through immunocytochemistry, quantitative analysis, and confocal microscopy. In the INL, parvalbumin-IR neurons were located in the inner marginal portion of the INL. On the...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2008.11.014
更新日期：2009-03-01 00:00:00
abstract：:Type I and type II isoenzymes of cyclic AMP-dependent protein kinase were identified by anion exchange chromatography and immunoblotting in human retina at various stages of development. The type I form was typical of the early fetal stage during which proliferation and migration were the primary cellular processes. I...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(89)90059-6
更新日期：1989-06-01 00:00:00
abstract：:Bubble-based acoustic radiation force aims to measure highly localized tissue viscoelastic properties. In the current investigation, acoustic radiation force was applied to laser-induced bubbles to measure age-related changes in the spatial distribution of elastic properties within in vitro porcine lenses. A potential...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2006.10.007
更新日期：2007-02-01 00:00:00
abstract：:A long-term culture of choriocapillary endothelial cells (CCE) from bovine eyes has been established. We developed a micromanipulative technique with a dissecting microscope for isolation of choriocapillary sheets after a prolonged trypsinization of choroid tissues. We then used a cell sweeping technique to ensure a c...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1993.1096
更新日期：1993-07-01 00:00:00
abstract：:Anthocyanins (ACs) are phenolic compounds that are distributed widely in fruits and vegetables. Although consumption of these compounds has been shown to improve visual function, the distribution of ACs in ocular tissue has not been examined in detail. The aim of this study was therefore to evaluate the ocular distrib...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2005.12.019
更新日期：2006-08-01 00:00:00
abstract：:Retinal neovascularization (NV) due to retinal ischemia is one of the major causes of vision reduction in patients with different types of retinal diseases although anti-vascular endothelial growth factor (anti-VEGF) therapy can partially reduce the size of the retinal NV. We recently reported that periostin plays an ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2016.10.012
更新日期：2016-12-01 00:00:00
abstract：:Lens lipid composition and lipid hydrocarbon chain structure change with age, region and cataract. Since the lens Ca(2+)-ATPase pump is important to the maintenance of calcium homeostasis and lens clarity, muscle sarcoplasmic reticulum Ca(2+)-ATPase was reconstituted with bovine lens lipids and dihydrosphingomyelin, t...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1999.0703
更新日期：1999-09-01 00:00:00
abstract：:The transmembrane glycoprotein CD44 is a cell adhesion molecule which has recently been localized in a variety of cell types. It mediates cell attachment to extracellular matrix components and also binds to the actin cytoskeleton within the cell. In this study, the presence and distribution of CD44 in the mouse retina...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1994.1026
更新日期：1994-03-01 00:00:00
abstract：:Nitric oxide (NO) production by vascular endothelium is important in regulation of blood flow. Reduced production of NO can adversely affect blood flow and other vascular functions. We investigated the expression of three nitric oxide synthase (NOS) isoforms in retina and choroid of aged human eyes and eyes with AMD. ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2009.10.004
更新日期：2010-01-01 00:00:00
abstract：:Exposure to hyposmotic solution causes release of ATP from lens cells via hemichannels. Because hemichannel opening feasibly could swamp the cells with calcium, we carried out studies to measure the magnitude of the increase in cytoplasmic calcium concentration caused by hemichannel opening. In studies on porcine lens...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2015.01.012
更新日期：2015-03-01 00:00:00
abstract：:The purpose of this study was to investigate the influence of hyperoxia and hypercapnia on fundus pulsations in the macular and optic disc region and determine a potential autoregulative capacity of the choroid under these conditions. In a randomized cross-over study 100% O2 and a mixture of 5% CO2 with air was inhale...
journal_title：Experimental eye research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0014-4835(05)80019-3
更新日期：1995-12-01 00:00:00
abstract：:A dark reaction is known to occur in retinal extracts of the gecko (Gekko gekko), in which the natural 11-cis-chromophore of the 521-pigment is apparently replaced by adding 9-cis-retinal to form the 9-cis-photopigment. With chloride-deficient extracts the reaction involves some 70% of the 521-pigment. Anions like nit...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(89)90074-2
更新日期：1989-07-01 00:00:00
abstract：:Analysis of UV filter levels in 48 cataractous human lenses was performed with the use of HPLC. A new chromophore with the absorption maximum at 410nm and molecular mass of 369Da was detected and assigned as deaminated 3-hydroxykynurenine O-beta-D-glucoside (3OHCKAG). Cataractous lenses are characterized by the wide r...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2008.03.013
更新日期：2008-06-01 00:00:00
abstract：:SPARC (secreted protein acidic and rich in cysteine) is a matricellular protein that regulates cellular adhesion and proliferation. In this report, we show that SPARC protein is restricted to epithelial cells of the murine lens and ends abruptly at the equatorial bow region where lens fiber differentiation begins. SPA...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1998.0608
更新日期：1999-03-01 00:00:00
abstract：:Aldose reductase (AR) is implicated in some of the disabling complications of diabetes, including neuropathy, retinopathy and cataracts. Our studies are aimed at further clarifying the role of AR in diabetes and facilitating the design of new classes of potent, specific AR inhibitors by gaining an understanding of the...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(89)90048-1
更新日期：1989-09-01 00:00:00
abstract：:The purpose of this study was to correlate potential mechanisms with site(s) of action for TNPA-induced ocular hypotension. In response to R(-)-2, 10, 11-trihydroxy-N-propyl-noraporphine hydrobromide (TNPA, 75 microg), a D2 dopamine receptor agonist, the intraocular pressure decreased by 4.5 and 8 mm Hg at 1 and 2 hr,...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1999.0734
更新日期：1999-12-01 00:00:00
abstract：:Reactive astrocytes in glaucomatous optic nerve changes are characterized by an increased expression of alphaB-crystallin and transforming growth factor-beta (TGF-beta). In the pathogenesis of glaucomatous optic nerve damage, ischemia/reperfusion injury may play an important role. The goal of the present study was to ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2006.12.008
更新日期：2007-04-01 00:00:00
abstract：:Periorbital adipose tissue expansion is a key pathological change in thyroid associated orbitopathy (TAO). Bone morphogenic protein 4 (BMP4) is instrumental in adipogenesis. We compared site-specific BMP4 expression and its effect on adipogenesis using donor-matched adipose tissue-derived stromal cells (ADSC) from TAO...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2019.01.020
更新日期：2019-04-01 00:00:00
