Abstract：
:The regulation of acidic amino-acid transport across the retinal pigment epithelium is of particular interest since glutamate and possibly aspartate have been identified as putative neurotransmitters in the retina, at the level of the photoreceptor cell. The present study, designed to measure the rate of acidic amino-acid transport across the mammalian pigment epithelium (PE), shows that there is a net transport of both glutamate and aspartate in the retina to choroid direction (R-C), with the R-C unidirectional flux of glutamate being substantially larger than the corresponding aspartate flux. The R-C and C-R fluxes of glutamate were found to be inhibited by ouabain. Further investigations utilizing aspartate revealed that the fluxes in both directions were inhibited when ouabain was present on the retinal side of the tissue preparation. The R-C flux of glutamate was significantly reduced by lowered concentrations of Na+, K+ and Ca2+, whereas the C-R flux was diminished only by the reduced concentration Ca2+. The changes in K+ concentration which markedly altered the R-C flux of glutamate were within the range of light-induced changes of K+ which has been observed in the extracellular space of the photoreceptor cells. The transporting system appears to be relatively specific for the acidic amino acids; for aspartate was an effective competitive inhibitor of glutamate transport whereas basic (lysine) and neutral (leucine) amino acids were not. The directionality, ouabain sensitivity, ionic dependence and substrate specificity of the transmembrane fluxes tend to support the concept of active transport as a mechanism of acidic amino-acid removal from the neural retina.
journal_name
Exp Eye Resjournal_title
Experimental eye researchauthors
Pautler EL,Tengerdy Cdoi
10.1016/s0014-4835(86)80088-4subject
Has Abstractpub_date
1986-08-01 00:00:00pages
207-14issue
2eissn
0014-4835issn
1096-0007journal_volume
43pub_type
杂志文章abstract：:Longitudinal (T1) magnetic relaxation times for the major phosphorus-containing metabolites present in the bovine and rabbit lens under organ culture conditions and in the bovine and rabbit globe have been determined. Significant differences in T1 for the major phosphorus metabolites in each case are observed, as well...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(84)90045-9
更新日期：1984-10-01 00:00:00
abstract：:Cultured bovine lens epithelial cells adapt to hypertonic sodium stress via an increase in Na(+)-myo-inositol cotransporter activity and accumulate myo-inositol. At least 12 hr of hypertonic exposure was necessary to enhance myo-inositol accumulation; and thereafter, uptake activity continued to increase throughout th...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1994.1083
更新日期：1994-07-01 00:00:00
abstract：:Electron-microscope immunocytochemistry and antibody staining of nitrocellulose replicas of SDS gels (Western blots) were used in a developmental study to detect the presence and localization of opsin in the developing photoreceptors of rds (020/A) mutant mice and their BALB/c normal controls. Western blot analysis of...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(87)80061-1
更新日期：1987-10-01 00:00:00
abstract：:The early events that occur rapidly after injury trigger signal cascades that are essential for proper wound closure of corneal epithelial cells. We hypothesize that injury releases ATP, which stimulates purinergic receptors and elicits the phosphorylation of epidermal growth factor receptor (EGFR) tyrosine residues a...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2007.03.009
更新日期：2007-07-01 00:00:00
abstract：:Obesity has been associated with abnormal lipid metabolism and with tissue hypoxia. Human Bruch's membrane (BrM) lipid deposits have been proposed to create a diffusion barrier to metabolic exchange between the choroid and photoreceptors, delaying the regeneration of photopigments. The speed of retinal dark adaptation...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2019.02.007
更新日期：2019-04-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2013.06.016
更新日期：2013-10-01 00:00:00
abstract：:The association between the use of statins and age-related macular degeneration (AMD), a leading cause of blindness, has been evaluated in many clinical studies; however, the results have been contradictory. We evaluated the effect of pitavastatin administration on laser-induced experimental choroidal neovascularizati...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2007.02.005
更新日期：2007-06-01 00:00:00
abstract：:The corneal endothelium of man, primates and carnivores has limited regenerative ability. Fibroblast growth factor (FGF) stimulates the proliferation of various mesoderm-derived cells, including corneal endothelial cells, in vitro. In the present work the effect of FGF on the regeneration of injured cat endothelium in...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(87)80097-0
更新日期：1987-12-01 00:00:00
abstract：:Following the identification of potent, orally active inhibitors of aldose reductase, the next challenge comes in demonstrating clinical utility in the treatment of diabetic complications. It is not feasible to conduct pivotal studies in all indications within the same trial and neuropathy evolved as the lead indicati...
journal_title：Experimental eye research
pub_type： 临床试验,杂志文章,评审
doi：10.1016/0014-4835(90)90103-2
更新日期：1990-06-01 00:00:00
abstract：:A panel of anti-rhodopsin monoclonal antibodies (MAbs) of defined epitope specificity has been evaluated by immunocytochemistry. Most of the IgG class MAbs (23/27) gave positive results, but only a few of the IgM class MAbs (2/21) were useful for this application. MAbs specific to the N-terminal region stained rod out...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(89)80022-3
更新日期：1989-12-01 00:00:00
abstract：:The mass receptor potential of the excised, superfused retina of the bullfrog was studied. Photoreceptor responses were isolated by addition of sodium aspartate to the Ringer solutions. Responses of the cones were monitored independently from responses of the rods by employing a two-flash method of stimulation which t...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(84)90007-1
更新日期：1984-08-01 00:00:00
abstract：:Exposure to sulfur mustard (SM) may result in severe ocular injuries. While some of the eyes show a clinical resolution of the injury (defined as clinically non-impaired), part of the eyes develop irreversible late ocular pathologies (defined as clinically impaired) that may lead to corneal blindness. Understanding th...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2019.04.011
更新日期：2019-07-01 00:00:00
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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：:A micropuncture technique involving the use of microcannulas with tip diameters less than 5 microns was used to measure the pressure in Schlemm's canal and in the meshwork at distances approximately 7 and 14 microns from the inner wall of Schlemm's canal. In one set of experiments where the spontaneous intraocular pre...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(92)90151-h
更新日期：1992-06-01 00:00:00
abstract：:Osteopontin (OPN) is elevated during the progression of experimental autoimmune uveoretinitis (EAU) in C57BL/6 (B6) mice. Furthermore, EAU symptoms are ameliorated in OPN knockout mice or in B6 mice treated with anti-OPN antibody (M5). Recently, OPN has been shown to promote the Th1 response not only in the extracellu...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2009.09.008
更新日期：2010-01-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2020.108043
更新日期：2020-06-01 00:00:00
abstract：:The pink-eyed dilution (p) locus is known to control the quantity of melanin pigment made within melanocytes and retinal pigment epithelium (RPE) in the eye. We have examined the effects of several mutant allele combinations at the murine p locus on the number and morphology of melanosomes in choroidal melanocytes and...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1998.0599
更新日期：1999-02-01 00:00:00
abstract：:The objective of the study was to investigate the effects of baicalin, baicalein, and wogonin (plant flavonoids) on interleukin-6 (IL-6) and interleukin-8 (IL-8) protein production, mRNA expression, and nuclear factor-kappaB (NF-kappaB) binding activities induced by interleukin-1beta (IL-1beta) in human retinal pigmen...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(03)00116-7
更新日期：2003-08-01 00:00:00
abstract：:Recent evidence suggests that mucosal epithelial cells are capable of actively participating in immune reactions via expression of surface antigens, such as adhesion molecules, and synthesis of cytokines. This appears to be important in the pathophysiology of non-ocular allergic disorders. The objectives of the experi...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1998.0528
更新日期：1998-11-01 00:00:00
abstract：:The aim of this study was to optimize non-viral gene transfer conditions and investigate the effect of fibroblast growth factor-1 (FGF-1) gene transfer on human corneal endothelial cell (HCEC) proliferation. Five non-viral vectors (Lipofectin, DMRIE-C, DAC-30, Effectene, FuGene6) were used to transfect HCEC with plasm...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2004.08.024
更新日期：2005-01-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1993.1158
更新日期：1993-11-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(87)80163-x
更新日期：1987-04-01 00:00:00
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journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(05)80144-7
更新日期：1995-10-01 00:00:00
abstract：:A shift or displacement of the retinal blood vessels (RBVs) with neuroretinal rim thinning indicates the progression of glaucomatous optic neuropathy. In chronic open angle glaucoma, individuals with RBV positional shifts exhibit more rapid visual field loss than those without RBV shifts. The retinal vessels reportedl...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2017.07.012
更新日期：2017-09-01 00:00:00
abstract：:The purpose of this study was to determine the aqueous levels and pharmacokinetics of topical fluconazole 0.2% upon single and multiple drop applications. Forty-nine patients undergoing cataract surgery were given topical fluconazole 0.2%. They either received single drop or a loading dose of 1 drop per 5 min for 20 m...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.2000.0936
更新日期：2001-02-01 00:00:00
abstract：:miRs play critical roles in oxidative stress-related retinopathy pathogenesis. miR-365 was identified in a previously constructed library from glyoxal-treated rat Müller cell. This report explores epigenetic alterations in Müller cells under oxidative stress to develop a novel therapeutic strategy. To examine the miR-...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2017.11.006
更新日期：2018-03-01 00:00:00
abstract：:Two previous studies have shown that N(G)-nitro-L-arginine methyl ester (L-NAME), an inhibitor of neuronal nitric oxide synthase, protects retinas of albino rats and mice from damaging levels of light. The aims of the present study were two-fold: (1) to confirm the protective effect of L-NAME on wild type albino rats ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(02)00334-2
更新日期：2003-04-01 00:00:00
abstract：:The aim of the study was to investigate the molecular genetics of uveal melanoma (UM) metastases and correlate it with disease progression. Twelve pathologically confirmed UM metastases from 11 patients were included. Molecular genetic alterations in chromosomes 3 (including the BAP1 region), 8q, 6p, and 1p were inves...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2012.04.010
更新日期：2012-07-01 00:00:00
abstract：:Extracts of bovine corneal stroma have been shown to activate keratocytes in culture to proliferate. We fractionated stromal extract on a column of Sephacryl S-300 and tested the fractions for mitogenic activity using cell culture and for the presence of IGF-II and its binding protein IGFBP-2 by Western blot. We found...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2007.12.004
更新日期：2008-03-01 00:00:00
abstract：:Intraocular pressure (IOP) is an important risk factor for glaucoma, and the response of the ONH and surrounding tissues to elevated IOP are often investigated to better understand pathophysiology. In vivo structure including that of the optic nerve head (ONH) and surrounding tissue of the eye are often assessed using...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2018.01.025
更新日期：2018-04-01 00:00:00
