Abstract：
:Previous studies have shown that aqueous humor of calf and human eyes contains about 25 microM hydrogen peroxide. We have studied the removal of hydrogen peroxide by the outflow pathway of intact, freshly enucleated, calf eyes. Eyes were immersed under silicone oil that had a density greater than water and medium containing various agents was perfused into the anterior chamber. Medium passing through the trabecular meshwork and out the cut ends of the aqueous veins was trapped by the silicone oil and harvested. By measuring the concentration of hydrogen peroxide in the anterior chamber and in the emerging medium, we were able to study the rate of removal by the outflow structures and the effect of inhibitors on this rate. At 1 mM hydrogen peroxide, the amount emerging was undetectable by our methods. At 10 mM, the results were inconsistent, suggesting that tissue damage may have been occurring. At 5 mM, the concentration in the emerging medium was reduced 150-1000-fold, depending on time and conditions. This rate of removal could be reduced by 3-aminotriazole, reaching a maximum inhibition of about 50% at 80 mM. Addition of 1,3-bis-(2-chloroethyl)-1-nitrosourea (BCNU) to further inhibit removal did not yield reliable results unless the concentration of H2O2 was lowered below 5 mM. Using loss of lactate dehydrogenase activity as a measure of cell damage, we found a 30% drop in activity after perfusing with BCNU, diamide, and 3-aminotriazole, followed by 3 hr with 10 mM hydrogen peroxide.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Nguyen KP,Chung ML,Anderson PJ,Johnson M,Epstein DLsubject
Has Abstractpub_date
1988-06-01 00:00:00pages
976-81issue
6eissn
0146-0404issn
1552-5783journal_volume
29pub_type
杂志文章abstract：PURPOSE:To identify the distribution of creatine transporter (CRT) in the aged human retina and how this expression pattern is modified after retinal detachment. METHODS:An affinity-purified antibody raised against the CRT was used in the immunohistochemical investigation. The anti-CRT antibody was colocalized with ne...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.11-8462
更新日期：2012-04-18 00:00:00
abstract：PURPOSE:To determine whether gene expression changes occur in the trabecular meshwork (TM) of cow eyes with steroid-induced intraocular pressure (IOP) elevation. METHODS:Adult female Braford cows (n = 4) were subjected to uniocular prednisolone acetate treatment for 6 weeks. IOP was monitored with an applanation tonom...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.11-7563
更新日期：2011-11-07 00:00:00
abstract：PURPOSE:The influences of diurnal rhythms involving a variety of ocular parameters are implicated in the development of myopia. The purpose of this study was to determine the expression of the melatonin receptor subtype proteins in chick ocular tissues and to examine the role of the circadian signaling molecule melaton...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.05-0195
更新日期：2006-01-01 00:00:00
abstract：PURPOSE:To determine the functional contribution of retinoic acid receptor (RAR)-alpha in the developing murine neural retina, through a phenotypic analysis of the corresponding null mutants. METHODS:RARalpha mutant (Rara(-/-)) mice were compared with wild-type littermates at several stages of pre- and postnatal devel...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.09-3769
更新日期：2010-06-01 00:00:00
abstract：PURPOSE:To improve the interpretation of Heidelberg Retina Flowmeter (HRF; Heidelberg Engineering GmBH, Dosselheim, Germany) flow maps by examining the influence of specific vascular structures and focus depth in the presence and absence of retinal blood flow. METHODS:HRF flow maps were recorded from the inferior reti...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.04-0772
更新日期：2005-01-01 00:00:00
abstract：PURPOSE:Despite the high metabolic demands of the neural retina, its detachment from the retinal pigment epithelium does not lead to immediate death for most of the cells. This study was undertaken to test the hypothesis that intrinsic protective mechanisms are activated in the neural retina during early stages of reti...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.05-1209
更新日期：2006-04-01 00:00:00
abstract：PURPOSE:Parstatin is a 41-mer peptide formed by proteolytic cleavage on activation of the PAR1 receptor. The authors recently showed that parstatin is a potent inhibitor of angiogenesis. The purpose of the present study was to evaluate the therapeutic effect of parstatin on ocular neovascularization. METHODS:Choroidal...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-5576
更新日期：2010-11-01 00:00:00
abstract：Purpose:Global motion and global form perception have been found to be abnormal in the presence of amblyopia. How such deficits manifest in visual function reliant on the interactions between these two visual processing mechanisms has not been adequately explored. In the current study, we use dynamic Glass patterns (dG...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.61.5.58
更新日期：2020-05-11 00:00:00
abstract：PURPOSE:Inflammatory status of RPE cells induced by A2E is essential in the development of AMD. Recent research indicated T-cell immunity was involved in the pathological progression of AMD. This study was designed to investigate how A2E suppresses immunoregulatory function of RPE cells in T-cell immunity in vitro. ME...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-17677
更新日期：2015-12-01 00:00:00
abstract：Purpose:Mutations in CACNA2D4, encoding the α2δ4 subunit of retinal voltage-gated calcium channels (Cav), cause a rare type of retinal dysfunction in human, mainly affecting cone vision. Here, we investigate the role of CACNA2D4 in targeting of Cav, its influence on cone-mediated signal transmission, and the cellular a...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.19-26759
更新日期：2019-12-02 00:00:00
abstract：PURPOSE:Glucocorticoid sensitivity in glaucoma has been attributed to differences in the expression of the two glucocorticoid receptors, GRalpha and GRbeta. GRalpha undergoes steroid-dependent nuclear translocation by associating with a heat shock protein (Hsp)90 multiprotein heterocomplex. The nuclear transport of the...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.05-0697
更新日期：2006-02-01 00:00:00
abstract：Purpose:Purpose The role of endothelial Yes-associated protein 1 (YAP) in the pathogenesis of retinal angiogenesis and the astrocyte network in the mouse oxygen-induced retinopathy (OIR) model is unknown. Methods:For in vivo studies, OIR was induced in conditional endothelial YAP knockout mice and their wild-type litt...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.61.4.1
更新日期：2020-04-09 00:00:00
abstract：PURPOSE:Methylprednisolone (MP) is commonly used to treat traumatic optic neuropathy and optic neuritis, but its benefit in terms of neuronal survival remains controversial. The aim of this study was to investigate the effects of MP on retinal ganglion cell (RGC) survival and visual function after ischemia in rats. ME...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.08-1869
更新日期：2008-11-01 00:00:00
abstract：PURPOSE:Recoverin has been identified as a target autoantigen for antirecoverin antibodies found in the sera of some patients with cancer-associated retinopathy. The aim of this study was to investigate the role of antirecoverin antibodies in cancer-associated retinopathy. METHODS:Human, rat, and rabbit antirecoverin ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1997-02-01 00:00:00
abstract：PURPOSE:To investigate the effect of the tissue origin of stromal fibroblasts and epithelial cells on reconstructed corneas in vitro. METHODS:Four types of constructs were produced by the self-assembly approach using the following combinations of human cells: corneal fibroblasts/corneal epithelial cells, corneal fibro...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.08-2001
更新日期：2009-06-01 00:00:00
abstract：:Plasminogen activator (PA) activity during epithelial wound healing in vitamin A-deficient rats was investigated to determine whether a relationship exists between corneal defect formation and PA activity. Uniform, central 3 mm diameter corneal epithelial wounds were made by scalpel debridement in vitamin A-deficient ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1988-12-01 00:00:00
abstract：PURPOSE:To evaluate a silk fibroin (SF) biomaterial as a substrate for corneal epithelial cell proliferation, differentiation, and stratification in vitro compared with denuded human amniotic membrane (AM). METHODS:Primary human and rabbit corneal epithelial cells and immortalized human corneal limbal epithelial cells...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-9876
更新日期：2012-06-26 00:00:00
abstract：Purpose:To investigate the action of atropine on global flash multifocal electroretinogram (gmfERG) responses to retinal defocus. Method:gmfERG recordings were made monocularly in 19 healthy adults under three lens-imposed defocus conditions (2 diopters myopic, 2 diopters hyperopic, and no defocus) before and 24 hours...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.18-24600
更新日期：2019-01-02 00:00:00
abstract：Purpose:We investigated the cross-sectional associations between macular pigment optical density (MPOD), plasma lutein (L), and zeaxanthin (Z) concentrations and cognitive function in 184 older adults of the 3-City-Bordeaux cohort. Methods:MPOD was measured using the two-wavelength autofluorescence method with a modif...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.17-22656
更新日期：2018-04-01 00:00:00
abstract：PURPOSE:The aim of this study was to investigate in rabbits the relationship between nitric oxide and the noncholinergic vasodilation caused by facial nerve stimulation in the eye and some extraocular tissues. METHODS:Uveal vascular resistance was determined by measuring simultaneously the flow from a cannulated vorte...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1996-09-01 00:00:00
abstract：PURPOSE:To determine the effect of dilute alcohol on human corneal epithelial cellular morphology and viability. Dilute alcohol is used for epithelial removal during photorefractive keratectomy (PRK) and laser subepithelial keratomileusis (LASEK). METHODS:Corneal epithelial sheets harvested from human eyes after alcoh...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：2002-08-01 00:00:00
abstract：PURPOSE:To assess the strength of the association between retinal nerve fiber layer (RNFL) thickness and optic disc topography measured with confocal retinal tomography (HRT II; Heidelberg Engineering, Dossenheim, Germany), optical coherence tomography (StratusOCT; Carl Zeiss Meditec, Inc., Dublin, CA), and scanning la...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.05-1489
更新日期：2006-07-01 00:00:00
abstract：PURPOSE:Adeno-associated virus serotype 2 (AAV2) has been shown to be effective in transducing inner retinal neurons after intravitreal injection in several species. However, results in nonprimates may not be predictive of transduction in the human inner retina, because of differences in eye size and the specialized mo...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-6250
更新日期：2011-04-25 00:00:00
abstract：:The unscarified corneas of rabbits were inoculated with 50 microliter of 2-4 X 10(6) PFU/ml of herpes simplex virus, type 1 (HSV-1), McKrae strain in 10 separate experiments over a 12-month period. Sixty of 104 (57.7%) rabbits survived to postinoculation (PI) day 20. These sixty rabbits were swabbed with dacron-tipped...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1985-04-01 00:00:00
abstract：PURPOSE:Transforming growth factor beta-induced (TGFBI)-related dystrophies constitute the most common heritable forms of corneal dystrophy worldwide. However, other than the underlying genotypes of these conditions, a limited knowledge exists of the exact pathomechanisms of these disorders. This study expands on our p...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-16922
更新日期：2015-07-01 00:00:00
abstract：Purpose:Pituitary adenylate cyclase activating polypeptide (PACAP) is neuroprotective in neuronal injuries. Bilateral common carotid artery occlusion (BCCAO) causes chronic hypoperfusion-induced degeneration in the rat retina, where we proved the retinoprotective effect of intravitreal PACAP. Although this route of adm...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.16-20630
更新日期：2016-12-01 00:00:00
abstract：:Cellular retinol binding protein (CRBP) was localized in the rat retina by means of light and electron microscopic immunocytochemistry. The peroxidase-antiperoxidase (PAP) method employed at the light microscopic level showed that CRBP is sharply localized to the retinal pigment epithelium (RPE). None was detectable i...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1984-08-01 00:00:00
abstract：:The authors used a psychophysical method to measure lens transmission of young, type I diabetic patients and normal controls. The results from normal controls agreed with previously published reports of decreasing lens transmission with age, and those from diabetic subjects suggested that lenses of young, type I diabe...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
abstract：PURPOSE:Oxygen-induced retinopathy (OIR) is a model for human retinopathy of prematurity (ROP). In OIR mice, this study determined whether blockade of β-adrenergic receptors (β-ARs) with propranolol influences retinal levels of proangiogenic factors, retinal vascularization, and blood-retinal barrier (BRB) breakdown. ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-5536
更新日期：2011-01-05 00:00:00
abstract：Purpose:To investigate the roles and pathways of microRNAs 143 and 145 in transforming growth factor (TGF)-β1-induced human subconjunctival fibrosis. Methods:Human tenon's capsule fibroblasts (HTFs) were obtained from a healthy eye. After treating cultured HTFs with TGF-β1, the expression of microRNAs 143 and 145 was ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.19-26797
更新日期：2019-05-01 00:00:00
