Abstract：
:Lens epithelium-derived growth factor (LEDGF) has been shown to enhance survival of lens epithelial cells (LECs) against stress. The objectives of these studies are to determine how LEDGF controls PKC gamma activity in normal LECs: how this control of PKC gamma regulates the phosphorylation of Connexin 43, the inhibition of gap junction activity, and the prevention of assembly of gap junctions in LECs. A rabbit LEC line, N/N1003A, was grown in the absence or presence of LEDGF. PKC gamma protein was translocated from the cytosolic fractions to the membrane fractions upon addition of LEDGF at 10 ng ml(-1). In whole cell extracts of N/N1003A cells, co-immunoprecipitation assays showed a protein-protein interaction between PKC gamma and Connexin 43. In the presence of LEDGF the activation of PKC gamma enhanced the phosphorylation of Connexin 43 by four-fold compared to the absence of LEDGF. The addition of LEDGF for 30 min resulted in a 65% decrease in gap junction Connexin 43 at the cell surface and a 70% decrease in gap junction activity. These results suggest that the activation of PKC gamma by LEDGF plays a major role in gap junction assembly/disassembly, which may enhance survival of LECs against osmolarity-stress induced by high sugar concentration.
journal_name
Exp Eye Resjournal_title
Experimental eye researchauthors
Nguyen TA,Boyle DL,Wagner LM,Shinohara T,Takemoto DJdoi
10.1016/s0014-4835(03)00049-6keywords:
subject
Has Abstractpub_date
2003-05-01 00:00:00pages
565-72issue
5eissn
0014-4835issn
1096-0007pii
S0014483503000496journal_volume
76pub_type
杂志文章abstract：:The purpose of these experiments was to develop a hypothesis to explain activation of m-calpain in cataractogenesis observed in rodents. The in vitro model used to study m-calpain activation was to correlate breakdown of the 'reporter' protein alpha-crystallin with the appearance of activated m-calpain using protein s...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1996.0234
更新日期：1997-04-01 00:00:00
abstract：:The purpose of this research was to study the early histologic changes occurring in the lens during the formation of selenite overdose cataract. Fourteen-day-old rat pups received a single injection of 2.25 mg Se (kg body wt)-1. Lenses at each of three stages of cataract formation were observed biomicroscopically, and...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(85)90077-6
更新日期：1985-04-01 00:00:00
abstract：:A potential role for myosin light chain kinase (MLCK) in regulating intraocular pressure and outflow function has recently been reported in living monkey eye and rabbit eye. There is little information about the effects of the ocular hypotensive agents, prostaglandin F2alpha (PGF2alpha) and latanoprost on this signali...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2003.10.015
更新日期：2004-02-01 00:00:00
abstract：:The photopigment of avian pineal which mediates light sensitivity was sought via its chromophore. Chick pineal cells in primary cultures were incubated overnight in the dark with [3H]retinol. Reduction of Schiff's bases with cyanoborohydride prior to SDS-PAGE revealed radioactivity bound to a 30 kDa component in pinea...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(88)80042-3
更新日期：1988-06-01 00:00:00
abstract：:We examined the role of Müller (glial) cells in buffering light-evoked changes in extracellular K+ concentration, [K+]o, in the isolated retina of the toad, Bufo marinus. We found evidence for two opposing Müller cell current loops that are generated by a light-evoked increase in [K+]o in the inner plexiform layer. Th...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(05)80166-6
更新日期：1992-10-01 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：:The effects of metabolic inhibitors on the apical and basal membrane potentials were studied in the isolated retinal pigment epithelium of the lizard Gekko gekko. Adding dinitrophenol or cyanide or cooling the tissue to 15 degrees C first depolarized the apical membrane and then hyperpolarized the basal membrane. The ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(90)90015-m
更新日期：1990-01-01 00:00:00
abstract：:SPACRCAN is a novel proteoglycan present in the interphotoreceptor matrix (IPM) of the rat and human retina that resists aqueous extraction through its binding to hyaluronan. The purpose of this study was: to clone mouse Spacrcan; to characterize the promoter elements; to define the deduced amino acid sequence; to est...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(02)00273-7
更新日期：2003-01-01 00:00:00
abstract：:The response of the poikilothermal lens to various incubation temperatures in vitro was compared with that of the homothermal lens. The rainbow trout lens was used as the poikilothermal lens and the rat lens as the homothermal lens. In contrast to rat lenses, cataract developed at 37 degrees C in rainbow trout lenses,...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(85)90021-1
更新日期：1985-08-01 00:00:00
abstract：:Retinal degenerations, regardless of the initiating event or gene defect, often result in a loss of photoreceptors. This formal deafferentation of the neural retina eliminates the intrinsic glutamatergic drive of the sensory retina and, perhaps more importantly, removes coordinated Ca++-coupled signaling to the neural...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2005.03.006
更新日期：2005-08-01 00:00:00
abstract：:The localization of [35S]-sulfate and [3H]-glucosamine in the hamster non-pigmented ciliary epithelium was studied by light and electron microscopic autoradiography. The radioactivity was concentrated in the Golgi complex of the non-pigmented ciliary epithelium 10 mins after injections of [35S]-sulfate or [3H]-glucosa...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(83)90009-x
更新日期：1983-02-01 00:00:00
abstract：:The retinoschisin protein is encoded on the short arm of the X-chromosome by RS1, is expressed abundantly in photoreceptor inner segments and in bipolar cells, and is secreted as an octamer that maintains the structural integrity of the retina. Mutations in RS1 lead to X-linked retinoschisis (XLRS), a disease characte...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2020.108344
更新日期：2021-01-01 00:00:00
abstract：:Retinal stimulation with high spatial resolution requires close proximity of electrodes to target cells. This study examines the effects of material coatings and 3-dimensional geometries of subretinal prostheses on their integration with the retina. A trans-scleral implantation technique was developed to place microfa...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2008.09.018
更新日期：2009-01-01 00:00:00
abstract：:The nature and the extent of acute injury to corneal endothelial cells caused by exposure to ultrasound radiation were characterized, as well as the long-term reaction of these cells to this form of injury. It was found that the degree of lethal cell injury induced by ultrasound scaled with exposure intensity and dura...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1998.0626
更新日期：1999-04-01 00:00:00
abstract：:Hypoxia-inducible factor (HIF) signaling cascade plays a critical role in angiogenesis by activating the transcription of genes encoding angiogenic growth factors. This study evaluated the effects of YC-1, a HIF-1 inhibitor, on the morphological, biochemical and molecular changes in human retinal microvascular endothe...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2009.06.013
更新日期：2009-11-01 00:00:00
abstract：:Purpose of the study was to develop and assess a novel controlled drug delivery system of latanoprost acid (LA). Poly(lactide)/Monomethoxy-poly(ethyleneglycol) (PLA-PEG) nanoparticles (NPs) were prepared using an emulsification-solvent evaporation technique. NPs were characterized in vitro according to their size, ζ-p...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2013.04.007
更新日期：2013-07-01 00:00:00
abstract：:The integrity of the retinal pigment epithelium, especially that of the macula is essential for the preservation of vision into old age. The chronic exposure to sunlight and peroxidized lipids from phagocytized photoreceptor outer segments imposes a high level of oxidative stress on the retinal tissues, which increase...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.2001.1146
更新日期：2002-06-01 00:00:00
abstract：:We sought to determine the effects of exogenous epidermal growth factor (EGF), heparin-binding EGF (HB-EGF), transforming growth factor alpha (TGF-alpha), single-chain precursor hepatocyte growth factor (SC-HGF), double-chain mature HGF (DC-HGF), and keratinocyte growth factor (KGF) on proliferation, motility, and dif...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1994.1152
更新日期：1994-12-01 00:00:00
abstract：:Keratoconus (KC) is a progressive, early onset, and often bilateral eye condition, in which the cornea gradually weakens and bulges out, and in advanced cases may eventually become cone-shaped. The available evidence suggests that it is a multifactorial disease with environmental and genetic contributions. Matrix Meta...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2019.03.016
更新日期：2019-05-01 00:00:00
abstract：:SLC4A11 mutations are associated with Fuchs' endothelial corneal dystrophy (FECD), congenital hereditary endothelial dystrophy (CHED) and Harboyan syndrome (endothelial dystrophy with auditory deficiency). Mice with genetically ablated Slc4a11 recapitulate CHED, exhibiting significant corneal edema and altered endothe...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2018.12.003
更新日期：2019-03-01 00:00:00
abstract：:Both in vivo and in vitro models were employed in the present study to assess the relative contribution of osmotic stress and increasing calcium levels to the development of sugar cataracts. In galactose cataract obtained from galactosemic weanling rats, the concentration of total calcium increased by nearly 10% at th...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1998.0486
更新日期：1998-06-01 00:00:00
abstract：:Angiotensin II and aldosterone are the main effectors of the renin-angiotensin aldosterone system (RAAS) and have a central role in hypertension as well as cardiovascular and renal disease. The localization of RAAS components within the retina has led to studies investigating the roles of angiotensin II, aldosterone a...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2019.107766
更新日期：2019-10-01 00:00:00
abstract：:Limbal microvascular endothelial cells (L-MVEC) contribute to formation of the corneal-limbal stem cell niche and to neovascularization of diseased and injuries corneas. Nevertheless, despite these important roles in corneal health and disease, few attempts have been made to isolate L-MVEC with the view to studying th...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2014.12.008
更新日期：2015-02-01 00:00:00
abstract：:Small heat shock proteins and alpha-crystallins are related proteins with several common structural and functional properties including homologous amino acid sequences and similar chaperone-like activity. Furthermore, small heat shock proteins and alpha-crystallins are phosphorylated in vivo at serine residues within ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1997.0324
更新日期：1997-08-01 00:00:00
abstract：:Our study aimed to investigate metabolites alterations in the blood plasma of central serous chorioretinopathy (CSC) patients and to identify the key biomarkers to increase the understanding of the mechanism of CSC at the molecular level. Quantitative and targeted metabolomics using liquid chromatography tandem-mass s...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2020.108401
更新日期：2020-12-14 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：:We designed an experiment to study the role of light history and polyunsaturated fatty acids (PUFA) on the susceptibility of the albino rat retina to light damage. Albino rats were born to dams that had been kept in either 1 lx or 250 lx cyclic light for 0-4 days prior to delivery and fed one of three diets containing...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(05)80112-5
更新日期：1995-03-01 00:00:00
abstract：:The scleral spur in 37 human (age 17-87 years) and six cynomolgus monkey eyes (2-4 years) was investigated. Serial meridional and tangential sections were studied with ultrastructural and immunocytochemical methods. The bundles of the ciliary muscle do not enter the scleral spur, but their tendons, which consist of el...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(92)90132-c
更新日期：1992-04-01 00:00:00
abstract：:Corneal mycotic ulceration is predominantly due to Aspergillus and Fusarium solani infection in tropical countries. In this study, we examined the proteome profile of tear samples from A. flavus keratitis patients at various stages of infection. The proteome was profiled using 2D PAGE and the protein levels were quant...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2019.107700
更新日期：2019-09-01 00:00:00
abstract：:Experiments were performed using [1-14C]PGH2 endoperoxide as substrate to assess which, if any, of the PGH2 utilizing enzymes were present in rat lens microsomes. After a 15 min incubation, prostaglandins (PGs) were extracted, separated by thin-layer chromatography and labeled PGs located by autoradiography. The bands...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(87)80010-6
更新日期：1987-02-01 00:00:00
