Abstract：
:Adenosine, produced from the decomposition of adenosine triphosphate, is believed to provide protective effects during ischemia. On the other hand, adenosine metabolites may serve as precursors for oxygen free radical formation. The time course of formation of adenosine and its purine metabolites was studied during retinal ischemia in rats. Concentrations of adenosine and its purine nucleoside metabolites inosine, hypoxanthine, and xanthine in the retina-choroid of ketamine/xylazine-anesthetized rats were measured during retinal ischemia using high performance liquid chromatography. Quantitative measurements were made possible in the small tissue mass through the use of internal standards. Ischemia was induced by ligation of the central retinal artery. In each rat, one eye was ischemic while the other served as a non-ischemic control. Eyes were frozen in situ at 1, 5, 10, 20, 30, 60, and 120 min of ischemia. The retina-choroid was then removed from the frozen eyes and analysed. Significant increases in the concentrations of adenosine, inosine, and hypoxanthine in ischemic compared to control retina-choroid were detectable within 1 to 5 min of the onset of ischemia, and within 10 min for xanthine. Increase in adenosine concentration in ischemic relative to control retina-choroid plateaued at 30 min of ischemia, while inosine and hypoxanthine concentrations increased continuously. The increase in xanthine concentration was exponential throughout the measurement period. This study documented the time-related changes in purine nucleoside concentration during ischemia. Prolonged ischemia results in ongoing production of xanthine, which by serving as a precursor for oxygen free radical formation, could be a pathogenic factor in prolonged retinal ischemia.
journal_name
Exp Eye Resjournal_title
Experimental eye researchauthors
Roth S,Rosenbaum PS,Osinski J,Park SS,Toledano AY,Li B,Moshfeghi AAdoi
10.1006/exer.1997.0391subject
Has Abstractpub_date
1997-12-01 00:00:00pages
771-9issue
6eissn
0014-4835issn
1096-0007pii
S0014-4835(97)90391-2journal_volume
65pub_type
杂志文章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：BACKGROUND:The laser-induced choroidal neovascularization (CNV) mouse model, as the most classic animal model of age-related macular degeneration (AMD), has been widely used. We designed a hand-held mouse holder to optimize mouse fixation in the laser-induced CNV modelling process, which was inconvenient until now. Thi...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2020.108392
更新日期：2020-12-15 00:00:00
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 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：:The study aimed to determine the variation in thickness and biomechanical properties between the different regions of the human sclera. Thickness measurements were carried out along eight meridian lines extending from the posterior pole to limbus in 36 human donor scleras aged 52-96 years. Strip specimens were extract...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2010.02.010
更新日期：2010-05-01 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：:Childhood glaucoma is an important cause of blindness world-wide. Eleven genes are currently known to cause inherited forms of glaucoma with onset before age 20. While all the early-onset glaucoma genes cause severe disease, considerable phenotypic variability is observed among mutations carriers. In particular, FOXC1...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2019.107893
更新日期：2020-01-01 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：:Steady state photoreceptor specific mRNA levels in bovine retina were studied during fetal maturation for five gene transcripts, including rhodopsin, arrestin (S-antigen), rod alpha-subunit of transducin, interphotoreceptor retinoid-binding protein (IRBP) and rod alpha-subunit of cGMP phosphodiesterase in order to und...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1993.1034
更新日期：1993-03-01 00:00:00
abstract：:The eye lens is a transparent and avascular organ in the front of the eye that is responsible for focusing light onto the retina in order to transmit a clear image. A monolayer of epithelial cells covers the anterior hemisphere of the lens, and the bulk of the lens is made up of elongated and differentiated fiber cell...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2016.03.005
更新日期：2017-03-01 00:00:00
abstract：:The aim of the study was to evaluate the antiproliferative and cytotoxic properties of triamcinolone acetonide (TA) on human retinal pigment epithelium cells (ARPE19) and the role of epicellular crystalline deposits. Monolayer cultures of ARPE19 cells were used. Purified or unpurified crystalline TA suspension (0.01-1...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2006.02.012
更新日期：2006-09-01 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：:An aqueous solution of a pigmented glucoside associated with human lens protein, 2-amino-3-hydroxyacetophenone-O-beta-D-glucoside (AHA-Glc), was irradiated with near UV-light. The near UV-irradiated glucoside was shown to generate a much lower level of active species of molecular oxygen as compared to the level of the...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2004.09.004
更新日期：2004-12-01 00:00:00
abstract：:Prostaglandin E2 (PGE2) markedly reduces intraocular pressure (IOP) when applied topically and induces strong relaxation of pre-contracted isolated ciliary muscle through PGE2 receptor. Because the ciliary muscle relaxation reduces IOP by enhancing uveoscleral aqueous outflow, the ciliary muscle where the existence of...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1999.0829
更新日期：2000-05-01 00:00:00
abstract：:Photoreceptor degeneration in human photoreceptor dystrophies and in the relevant animal models has been thought to be executed by one common mechanism -- caspase-mediated apoptosis. However, recent experiments have challenged this concept. In previous experiments, analyzing gene expression in the degenerating rd/rd m...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2006.01.014
更新日期：2006-08-01 00:00:00
abstract：:Recently, a unique distribution, namely a reduction of macular pigment optical density (MPOD) within the central retina with a surrounding ring-like structure of preserved MPOD at about 6 degrees eccentricity was suggested to be a common finding in macular telangiectasia (MacTel) type 2. In order to quantify this redu...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2009.02.006
更新日期：2009-06-15 00:00:00
abstract：:Fiber cells of the ocular lens are arranged in a series of concentric shells. New growth shells are added continuously to the lens surface and, as a consequence, the preexisting shells are buried. To focus light, the refractive index of the lens cytoplasm must exceed that of the surrounding aqueous and vitreous humors...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2016.03.009
更新日期：2017-03-01 00:00:00
abstract：:Several scleral cross-linking (SXL) methods were suggested to increase the biomechanical stiffness of scleral tissue and therefore, to inhibit axial eye elongation in progressive myopia. In addition to scleral cross-linking and biomechanical effects caused by riboflavin and light irradiation such a treatment might ind...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2015.07.005
更新日期：2015-10-01 00:00:00
abstract：:In retinal degenerative disease (RD), the diminished light signal from dying photoreceptors has been considered the sole cause of visual impairment. Recent studies show a 10-fold increase in spontaneous activity in the RD network, challenging this paradigm. This aberrant activity forms a new barrier for the light sign...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2015.05.013
更新日期：2016-09-01 00:00:00
abstract：:PAX6-related Aniridia is a sight-threatening disease involving progression of secondary glaucoma and aniridia related keratopathy (ARK). Change or loss of limbal epithelial progenitors causes epithelial surface defects. We analyzed the effect of PAX6 on mRNA expression changes with a two-step approach, as follows. Fir...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2018.10.002
更新日期：2019-02-01 00:00:00
abstract：:The elimination of spermine, the end product of cellular polyamine, from the retina to the blood across the blood-retinal barrier (BRB) was investigated. The in vivo microdialysis study revealed that the elimination of [(3)H]spermine from vitreous humor after vitreous bolus injection was in a biexponential manner. The...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2014.05.002
更新日期：2014-07-01 00:00:00
abstract：:Many ocular surface tests have been developed for the clinical diagnosis of keratoconjunctivitis sicca, and several have been used to 'validate' animal models of Sjogren's and non-Sjogren's dry eye. However, many of these tests themselves have not been systematically studied or standardized, and yet their use in anima...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2004.07.002
更新日期：2004-11-01 00:00:00
abstract：:The response of the lens to changes in the distribution and concentration of electrolytes can be measured by characterizing the changes in resistivity that occur secondary to variations in intracellular composition. Regional intracellular cytoplasmic resistivities of lens fiber cells can be approximated by homogenates...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(87)80164-1
更新日期：1987-04-01 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：:The relative distribution of acetylcholine (ACh) receptors on the surface of the isolated ocular lens of the rabbit was determined from induced changes in translens short-circuit current (I(SC)) and the translenticular resistance (R(t)) at seven delineated, parallel zones from the anterior to the posterior pole. For t...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.2002.1185
更新日期：2002-06-01 00:00:00
abstract：:The aim of this study was to test the selectivity, in-vivo effectiveness, and potential mechanism of action of a linomide analogue (N-phenyl-1,2-dihydro-4-hydroxyl-2-oxo-quinoline-3-carboxamide, Lin05) for inhibition of choroidal neovascularization. The selectivity of Lin05 was tested in cell proliferation assays with...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2010.10.013
更新日期：2010-12-01 00:00:00
abstract：:To facilitate the peeling of internal limiting membrane or epiretinal membrane in vitreoretinal surgery, trypan blue (TB) and indocyanine green (ICG) have been used. However, the cytotoxicity of these dyes have been concerned. The aim of this study was to investigate the neurotoxic effects of TB on rat retinal ganglio...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2005.02.010
更新日期：2005-10-01 00:00:00
abstract：:Colchicine, a naturally occurring alkaloid, inhibits both fast and slow axoplasmic transport by prevention of microtubule assembly. We have examined the influence of colchicine on the neurogenically mediated acute inflammatory responses to topically administered nitrogen mustard and formaldehyde on the albino rabbit e...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(84)90071-x
更新日期：1984-12-01 00:00:00
abstract：:Oxidative stress and inflammation are important pathological mechanisms in many neurodegenerative diseases, including age-related macular degeneration (AMD). The very low-density lipoprotein receptor knockout mouse (Vldlr-/-) has been identified as a model for AMD and in particular for retinal angiomatous proliferatio...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2013.08.003
更新日期：2013-11-01 00:00:00
abstract：:Research over the past two decades has shown that the growth of young eyes is guided by vision. If near- or far-sightedness is artificially imposed by spectacle lenses, eyes of primates and chicks compensate by changing their rate of elongation, thereby growing back to the pre-lens optical condition. Little is known a...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1999.0813
更新日期：2000-04-01 00:00:00
