Abstract：
:Analysis of bovine interphotoreceptor matrix and conditioned medium from human Y-79 retinoblastoma cells by gelatin SDS-PAGE zymography reveals abundant activity of a 72-kDa M(r) gelatinase. The 72-kDa gelatinase from either source is inhibited by EDTA but not aprotinin or NEM, indicating that it is a metalloproteinase (MMP). The 72-kDa MMP is converted to a 62-kDa species with APMA treatment after gelatin sepharose affinity purification, typical of previously described gelatinase MMP-2. The latent 72-kDa gelatinase from either bovine IPM or Y-79 media autoactivates without APMA in the presence of calcium and zinc after 72 hr at 37 degrees C, producing a fully active mixture of proteinase species, 50 (48 in Y-79 medium), 38 and 35 kDa in size. The presence of inhibitory activity was examined in both whole bovine IPM and IPM fractions separated by SDS-PAGE. Whole IPM inhibited gelatinolytic activity of autoactivated Y-79-derived MMP in a dose-dependent manner. Inhibitory activities are observed in two protein fractions of 27-42 and 20-25 kDa. Western blots using antibodies to human tissue inhibitor of metalloproteinase 1 and 2 (TIMP-1 and -2) reveal the presence of two TIMP-1-like proteins at 21 and 29 kDa in inhibitory fractions of the bovine IPM. TIMP-2 was not detected in the inhibitory IPM fractions, consistent with the observed autoactivation of bovine IPM 72-kDa gelatinase. Potential roles for this IPM MMP-TIMP system include physiologic remodelling of the neural retina-RPE cell interface and digestion of shed rod outer segment as well as pathological processes such as retinal detachment, PE cell migration, neovascularization and tumor progression. Cultured Y-79 cells appear to be a good model for studying the production and regulation of this proteinase system.
journal_name
Exp Eye Resjournal_title
Experimental eye researchauthors
Jones BE,Moshyedi P,Gallo S,Tombran-Tink J,Arand G,Reid DA,Thompson EW,Chader GJ,Waldbillig RJdoi
10.1006/exer.1994.1107subject
Has Abstractpub_date
1994-09-01 00:00:00pages
257-69issue
3eissn
0014-4835issn
1096-0007pii
S0014-4835(84)71107-9journal_volume
59pub_type
杂志文章abstract：:The causes of vitreous humor (VH) liquefaction remain unclear. Diabetes accelerates this process and other ocular diseases. The weakening of the blood-retina barrier observed with diabetes could enhance the rate of transfer of relatively small molecules such as glucose (Glu) and phospholipids (PLs) from the retina to ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2020.108221
更新日期：2020-11-01 00:00:00
abstract：:The purpose of this study was to determine whether endothelin B (ETB) receptor levels in the optic nerve are related to retinal ganglion cell (RGC) loss in a model of chronic endothelin-1 (ET-1) induced optic neuropathy. RGCs of adult Brown Norway rats were first retrogradely labeled with fluorochrome from the superio...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2008.09.009
更新日期：2009-03-01 00:00:00
abstract：:Epithelial cells in explants from rat lenses differentiate into fibre cells when cultured with retina conditioned medium (RCM). This differentiation is characterised by cell elongation, the accumulation of alpha-crystallin and the onset of synthesis of the fibre specific beta- and gamma-crystallins. To determine the e...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(88)80083-6
更新日期：1988-02-01 00:00:00
abstract：:Hypoxic preconditioning protects photoreceptors against light-induced degeneration preserving retinal morphology and function. Although hypoxia inducible transcription factors 1 and 2 (HIF1, HIF2) are the main regulators of the hypoxic response, photoreceptor protection does not depend on HIF1 in rods. Here we used ro...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2015.12.008
更新日期：2016-05-01 00:00:00
abstract：:It has been reported that chymase activity was increased in allergic conjunctivitis patients and this activity was correlated with the severity of the disease. However, the precise roles of chymase in allergic conjunctivitis are unclear, and whether chymase inhibitors are effective for allergic conjunctivitis has not ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2013.05.015
更新日期：2013-08-01 00:00:00
abstract：:In response to injury, the adult mammalian retina shows signs of structural remodeling, possibly in an attempt to preserve or regain some of its functional neural connections. In order to study the mechanisms involved in injury-induced plasticity, we have studied changes in growth associated protein 43 (GAP-43) after ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2007.01.006
更新日期：2007-05-01 00:00:00
abstract：:The ability of interphotoreceptor retinoid-binding protein (IRBP) to facilitate the incorporation of retinol into retinyl esters by the retinal pigment epithelium (RPE) was examined in toad (Bufo marinus) eyecup preparations devoid of neural retina (RPE-eyecup). Solutions containing purified bovine IRBP and all-trans[...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(89)80059-4
更新日期：1989-10-01 00:00:00
abstract：:Utilizing cultured lenses from normal and homozygous glutathione peroxidase (GSHPx-1) knockout mice and inhibitors for GSSG Reductase (GSSG Red), 1,3-bis(2-chlorethyl)-1-nitrosourea (BCNU) and catalase (Cat), 3-aminotriazole (3-AT), the ability to degrade H2O2 was examined at two H2O2 concentrations, 300 microM and 80...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1996.0250
更新日期：1997-03-01 00:00:00
abstract：:The pre-retinal vitreous space of the eye of albino rabbits was perfused in vivo via a dialysis probe in order to measure the concentration of endogenous amino acids. Studies of isotope concentrations in the vitreal effluent following intracarotid injections of 3HOH and [14C]mannitol demonstrated that entrance of 3HOH...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(87)80008-8
更新日期：1987-02-01 00:00:00
abstract：:The human lens crystallin gene CRYGC T5P is associated with Coppock-like cataract and has a phenotype of a dust-like opacity of the fetal lens nucleus and deep cortical region. Previous in vitro mutation studies indicate that the protein has changed conformation, solubility, and stability, which may make it susceptibl...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2008.08.021
更新日期：2008-12-01 00:00:00
abstract：:Beta-crystallins are major protein constituents of the mammalian lens, where their stability and association into higher order complexes are critical for lens clarity and refraction. Dimerization is an initial step in formation of beta-crystallin complexes. Beta-crystallin association into dimers is energetically high...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2004.06.011
更新日期：2004-09-01 00:00:00
abstract：:Mice are now routinely utilized in studies of aqueous humor outflow dynamics. In particular, conventional aqueous outflow facility (C) is routinely measured via perfusion of the aqueous chamber by a number of laboratories. However, in mouse eyes perfused ex-vivo, values for C are variable depending upon whether the pe...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2017.08.011
更新日期：2017-11-01 00:00:00
abstract：:The purpose of present study is to dissect the role of PI3K/AKT signaling in the anti-apoptotic effects of human granulocyte colony-stimulating factor (G-CSF) on rat retinal ganglion cells (RGCs) after optic nerve (ON) crush. The ONs of seventy-two adult male Wistar rats were crushed by a standardized method. Control ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2010.01.004
更新日期：2010-05-01 00:00:00
abstract：:Rod outer segments (ROS) isolated from adult rat retinas are phagocytized by cultured rat retinal pigment epithelial (RPE) cells. Using a double immunofluorescent labeling procedure, we have compared the binding and ingestion of ROS isolated at different times of the day. After 2 hr of incubation, approximately 98% of...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(86)90025-4
更新日期：1986-04-01 00:00:00
abstract：:Electrophysiological responses of the retina to a series of grating stimuli (6-768 min of arc/phase) were recorded in seven sessions using normal Beagles and in 21 sessions using Beagles afflicted with inherited glaucoma. A 15 degrees and a 30 degrees field, centered around the animal's area centralis, were used to st...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1993.1061
更新日期：1993-04-01 00:00:00
abstract：:Aim of present investigation was to study the effect of catechin and the combination of catechin and cetirizine in ovalbumin induced animal model of allergic conjunctivitis. Guinea pigs were divided into 5 groups: normal control, disease control, disease treated with catechin 100 mg/kg, disease treated with cetirizine...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2015.05.020
更新日期：2015-08-01 00:00:00
abstract：:Inadequate cross-linking between collagen lamellae is a characteristic feature of keratoconus corneas. The formation of covalent bonds between collagen and elastin fibrils, which maintain the biomechanical properties of the cornea, is mediated by the cuproenzyme lysyl oxidase and four lysyl oxidase-like enzymes. The a...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2012.09.005
更新日期：2012-11-01 00:00:00
abstract：:There has been a drive to develop new cell based therapies to treat corneal blindness, one of the most common causes of blindness worldwide. Mechanical and physical cues are known to regulate the behavior of many cell types, however studies examining these effects on corneal epithelial cells have been limited in numbe...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2018.08.001
更新日期：2018-12-01 00:00:00
abstract：:Colonization by Staphylococcus aureus (S. aureus) has been implicated in many infectious and wound healing disorders. This study was performed to characterize the pathogenic role of S. aureus alpha-hemolysin (alpha-toxin) in corneal epithelial wound healing and infectious keratitis in the setting of a corneal wound. T...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2019.02.019
更新日期：2019-04-01 00:00:00
abstract：:miRNA-7a plays critical roles in various biological aspects in health and disease. We aimed to reveal roles of miR-7a in mouse retinal development by loss- and gain-of-function analyses of miR-7a. Plasmids encoding miR-7a or miR-7a-decoy (anti-sense miR-7a) were introduced into mouse retina at P0, and the retina was c...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2015.06.022
更新日期：2015-09-01 00:00:00
abstract：:A technology has recently been developed that allows for the rapid transduction of full-length functionally active proteins into intact tissue through intravenous injection and into cultured cells. This technology involves the fusion of an 11 amino acid sequence of the HIV TAT protein to the protein of interest. In th...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2003.12.010
更新日期：2004-05-01 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：: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：:Choroidal neovascularization (CNV) is one of the severe pathological consequences of the end-stage of age-related macular degeneration (AMD). Several lines of evidence implicate increased levels of vascular endothelial growth factor (VEGF) in the retinas of AMD patients. Current available agents for the inhibition of ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2010.06.019
更新日期：2010-09-01 00:00:00
abstract：:Vitreous from bovine, human and chick embryo has been found to contain a trypsin inhibitory activity. Chymotrypsin-inhibitory activity was also identified in bovine and chick embryo vitreous. Following either ultrafiltration or Bio Gel P-10 chromatography, these activities appear in fractions having a molecular weight...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(85)90031-4
更新日期：1985-11-01 00:00:00
abstract：:Corneal epithelial injury induces release of endogenous metabolites that are cannabinoid receptor 1 (CB1) and transient receptor potential vanilloid 1 (TRPV1) agonists. We determined the functional contributions by CB1 and TRPV1 activation to eliciting responses underlying wound healing in human corneal epithelial cel...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2010.06.022
更新日期：2010-09-01 00:00:00
abstract：:Autoradiographic studies showed selective accumulation of [3H]-glycine, [3H]-GABA, and the GABA agonist [3H]-muscimol by neurons of the mudpuppy retina. [3H]-Glycine was taken up by bipolar cells, amacrine cells, and displaced amacrine or ganglion cells. Both [3H]-GABA and [3H]-muscimol were also accumulated by bipola...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(84)90116-7
更新日期：1984-07-01 00:00:00
abstract：:To investigate the nature of the 140 kDa glycoprotein in the trabecular meshwork, polypeptides were extracted with either urea/sodium dodecyl sulfate (SDS)/beta-2-mercaptoethanol (BME) or guanidine hydrochloride followed by pepsin digestion. After electrophoresis and immunoblotting with anti-type-VI-collagen antibodie...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1994.1006
更新日期：1994-02-01 00:00:00
abstract：:Whole mounts of lens epithelia from rats fed on a galactose-rich diet for one, two, three or seven days were examined for morphological alterations. The meridional rows of epithelia from lenses of animals fed on galactose for seven days were found to be grossly disorganized or abnormally elongated. There was some indi...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(84)90183-0
更新日期：1984-06-01 00:00:00
abstract：:Numerous animal studies indicate that aldose reductase inhibitors (ARIs) are beneficial for the prevention or amelioration of diabetic complications such as neuropathy, nephropathy and the ocular complications of cataract, retinopathy and keratopathy. To aid in the identification of novel potent ARIs, we have previous...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2004.05.011
更新日期：2004-12-01 00:00:00
