Abstract：
PURPOSE:To investigate the effect of hydrogen peroxide on the epithelial cells of cultured rabbit lenses. METHODS:Lenses were cultured in minimum essential medium containing a single dose of 0.03, 0.1, or 0.2 mM H2O2. Three hours later the medium was replaced with peroxide-free minimum essential medium. Lenses were also treated with 0.5 mM 1,3-bis(2-chloroethyl)-1 nitrosourea (BCNU) to lower the activity of glutathione reductase and then exposed to 0.03 mM H2O2 maintained nearly constant by glucose oxidase. After H2O2 treatment, lenses were fixed and whole mounts of the epithelium were prepared or lenses were processed for electron microscopy. RESULTS:Cells exposed to a single dose of 0.03 mM H2O2 appeared normal; 0.1 mM H2O2 was not cytotoxic. Exposure to 0.2 mM H2O2 elicited swelling in cells in the pre-equatorial region (30 minutes) followed by the formation of islands of cells in the pre-equatorial region at 1 hour. Central epithelial cells appeared normal at 1 hour, were swollen at 3 hours and dead at 24 hours. By 48 hours, dead cells were found in the pre-equatorial and central regions. Cells in the peripheral region of the epithelium did not exhibit cytotoxicity. If lenses were pretreated with BCNU and then challenged with a maintained level of 0.03 mM H2O2, cytotoxicity was induced in the central and pre-equatorial regions. Cells in the peripheral region survived BCNU-H2O2 treatment. CONCLUSIONS:Cells in the peripheral region of cultured lenses were more resistant to H2O2 cytotoxicity than cells in the central and pre-equatorial regions. The antioxidant defense or repair systems for H2O2-induced damage do not appear to be uniformly distributed in subpopulations of the lens epithelium.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Reddan JR,Giblin FJ,Dziedzic DC,Wirebaugh BM,Peters JLsubject
Has Abstractpub_date
1995-02-01 00:00:00pages
289-99issue
2eissn
0146-0404issn
1552-5783journal_volume
36pub_type
杂志文章abstract：PURPOSE:Although L-type Ca2+ channels are known to play a key role in the myogenic reactivity of retinal arterial vessels, the involvement of other types of voltage-gated Ca2+ channels in this process remains unknown. In the present study we have investigated the contribution of T-type Ca2+ channels to myogenic signali...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-17299
更新日期：2015-08-01 00:00:00
abstract：PURPOSE:To investigate the choroidal thickness (CT) in children with amblyopia through spectral-domain optical coherence tomography (SD-OCT). METHODS:Thirty-seven children with unilateral amblyopia and 22 children with normal vision participated in the study. Cross-sectional images of the choroid of evaluated eyes wer...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.14-14439
更新日期：2014-10-14 00:00:00
abstract：PURPOSE:A pilot study of human neural retinal transplantation was undertaken to investigate three major issues: whether a safe surgical procedure could be devised for transplantation of neural retinal tissue into the subretinal space, whether the transplant would be accepted in the subretinal space, and whether an impr...
journal_title：Investigative ophthalmology & visual science
pub_type： 临床试验,杂志文章
doi：
更新日期：2000-09-01 00:00:00
abstract：Purpose:Recent retrospective clinical studies and animal experiments have suggested that cerebrospinal fluid pressure (CSFP) is important in glaucoma, acting through the translaminar pressure (TLP = IOP - CSFP), which directly affects the optic nerve head. In this study, IOP and intracranial pressure (ICP; a surrogate ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.61.12.18
更新日期：2020-10-01 00:00:00
abstract：PURPOSE:Our study aimed to explore the heritability of retinal vascular caliber among Singapore Chinese families. METHODS:In the Strabismus, Amblyopia, and Refractive Error Study in Singaporean Chinese Preschoolers (STARS) family study conducted from 2008 to 2010, a total of 727 participants (304 parent-child pairs, 8...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-12418
更新日期：2013-08-19 00:00:00
abstract：PURPOSE:To determine if limited proteolysis of beta-crystallins is associated with insolubilization of proteins in rats lens during maturation and to test if the protease, calpain II, is involved. METHODS:Soluble and insoluble lens proteins from 4-day-old to 4-month-old rat lens cortexes and nuclei were separated by t...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1994-03-01 00:00:00
abstract：PURPOSE:Retinal ischemia/reperfusion (IR) is common in eye disorders. Pattern-recognition receptors (PRRs) are reported to initiate sterile inflammatory response. The role of PRRs in retinal IR injury is currently unknown. Thus, we investigated the expression and function of membrane and cytoplasmic PRRs during retinal...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.14-14380
更新日期：2014-08-05 00:00:00
abstract：PURPOSE:We investigated the mechanism of tamoxifen (TAM) retinotoxicity using human retinal pigment epithelial (RPE)-derived (ARPE-19) and photoreceptor-derived (661W) cells. METHODS:Cultured ARPE-19 and 661W cells were treated with 5 to 10 μM TAM, and the resultant cell death was quantified using lactate dehydrogenas...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-9827
更新日期：2012-08-09 00:00:00
abstract：PURPOSE:Tubby-like proteins (TULPs) are a family of four proteins, two of which have been linked to neurosensory disease phenotypes. TULP1 is a photoreceptor-specific protein that is mutated in retinitis pigmentosa, an inherited retinal disease characterized by the degeneration of rod and cone photoreceptor cells. To i...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.06-0059
更新日期：2007-06-01 00:00:00
abstract：PURPOSE:The transformed RGC-5 retinal ganglion cell line is used widely in glaucoma research. Increased resistance to glutamate was noted in published literature and led to the recharacterization of the RGC-5 cell line. METHODS:Characterization of the RGC-5 cell line was performed by sequencing of a region of the nucl...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.09-3484
更新日期：2009-09-01 00:00:00
abstract：:The authors created a new rabbit model for keratoconjunctivitis sicca by cauterizing the lacrimal gland excretory duct and surgically removing the nictitating membrane and harderian gland. Although the slit-lamp examination findings remained normal for the first 8 wk postoperatively, tear-film osmolarity was elevated ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1987-02-01 00:00:00
abstract：PURPOSE:Clonidine and brimonidine, two alpha-2 agonists, have been shown to reduce intraocular pressure (IOP) in patients with glaucoma. Little is known, however, about the exact role of alpha receptors in the control of ocular blood flow in the posterior pole of the eye. Hence, the study was conducted to investigate t...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章,随机对照试验
doi：10.1167/iovs.07-0178
更新日期：2007-09-01 00:00:00
abstract：PURPOSE:To investigate mechanical properties of the human posterior lens capsule. METHODS:Twenty-five human donor eyes were obtained from an eye bank. The age of the donors ranged from 1 to 94 years. Test specimens were prepared as tissue rings from posterior lens capsules by means of excimer laser. Capsular thickness...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.02-0096
更新日期：2003-02-01 00:00:00
abstract：PURPOSE:To evaluate the structure-function relationship between ganglion cell-inner plexiform layer (GCIPL) thickness at the macula and 10-2 standard automated perimetry (SAP) in glaucoma and to evaluate the relationship using a recently proposed linear model. METHODS:In a cross-sectional analysis, structure-function ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-16943
更新日期：2015-06-01 00:00:00
abstract：:The properties of the oscillatory potentials (OPs) of the mudpuppy electroretinogram (ERG) were studied and compared with the properties of the b-wave of the ERG and the proximal negative response (PNR). Both transretinal and intraretinal ERGs were recorded in response to full-field as well as 200 and 500 microgram sp...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1978-12-01 00:00:00
abstract：PURPOSE:To characterize the potential for neuropeptide Y (NPY) signaling in the retinal pigment epithelium (RPE) by identifying the NPY receptor subtypes present, determining the effect of NPY on second-messenger production and membrane conductance, and establishing the neural retina as a site of NPY gene expression. ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1998-09-01 00:00:00
abstract：PURPOSE:The serum- and glucocorticoid-inducible kinase SGK1 regulates several epithelial channels and transporters, the related protein kinase B (PKB) regulates glucose transport. SGK1 is expressed in the brain and could thus regulate glial and/or neuronal transport processes. The present study explores whether SGK1 is...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.03-0062
更新日期：2004-05-01 00:00:00
abstract：PURPOSE:To assess the range of macular pigment optical density (MPOD) in a healthy group of young adults of South Asian origin; to investigate whether any dietary factors or personal characteristics were related to intersubject variations in MPOD; and to compare the mean MPOD of the South Asian group with the mean MPOD...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-10957
更新日期：2013-04-17 00:00:00
abstract：PURPOSE:To link psychophysical thresholds for blind spot awareness and filling-in with early neural components that underpin these perceptions. METHODS:Blind spot dimensions were quantified, after which an intrinsic stimulus (i.e., a rectangular bar of varying length centered within the blind spot) was used to determi...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-5910
更新日期：2011-01-25 00:00:00
abstract：:Although the lens has been shown to have the capacity to respond to insulin in vitro, little is known concerning the biochemical relationships of insulin to the lens in vivo. Therefore we have measured insulin in the aqueous humor of rabbits by a sensitive radioimmunoassay after paracentesis and feeding. The insulin c...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1980-12-01 00:00:00
abstract：PURPOSE:To investigate phenotype characteristics of fellow eyes in patients with early onset of neovascular age-related macular degeneration (NVAMD). METHODS:Patients with new-onset unilateral NVAMD between 50 and 65 years (n = 57, early-onset choroidal neovascularization [CNV] group) or >80 years (n = 47, late-onset ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-16989
更新日期：2015-11-01 00:00:00
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journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.14-15882
更新日期：2015-04-01 00:00:00
abstract：:Male albino rats, injected intravenously or intracerebroventricularly with delta 1-tetrahydrocannabinol (THC), develop mudriasis. The median effective dose of the intravenous administration group was 5 mg/kg THC, whereas that for the intracerebroventricular route was 150 microgram/kg THC. Sympathectomy significantly d...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1982-03-01 00:00:00
abstract：PURPOSE:The aim of this study was to determine the function of the tight junction protein occludin in the control of permeability, under diffusive and hydrostatic pressures, and its contribution to the control of cell division in retinal pigment epithelium. METHODS:Occludin expression was inhibited in the human retina...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.07-1204
更新日期：2008-06-01 00:00:00
abstract：PURPOSE:To test the association between TCF4, a gene recently found to confer susceptibility to Fuchs' corneal dystrophy (FCD) in Caucasian populations, and Chinese patients with FCD. METHODS:Fifty-seven Chinese subjects with clinically diagnosed FCD and 121 normal control subjects were recruited. Genomic DNA was extr...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.11-7568
更新日期：2011-07-29 00:00:00
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journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.61.3.27
更新日期：2020-03-09 00:00:00
abstract：PURPOSE:To evaluate the pharmacokinetics of ciliary neurotrophic factor (CNTF) delivered over a period of up to 2 years by an intraocular encapsulated cell technology (ECT) implant in patients with retinitis pigmentosa (RP) and geographic atrophy (GA). METHODS:Patients from phase 1 RP (CNTF1); phase 2 GA (CNTF2); and ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1167/iovs.12-9970
更新日期：2012-11-01 00:00:00
abstract：PURPOSE:Slow oscillatory eye movements (SOMs) occur simultaneously with tremor, drifts, and microsaccades during visual fixation. In a previous study, the amplitude of SOM was found to be affected by the visual characteristics of the stimuli. This indicates a perceptual influence on the control of the movement. However...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-12588
更新日期：2013-12-11 00:00:00
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journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.08-1928
更新日期：2008-12-01 00:00:00
abstract：PURPOSE:MRL/Mp-lpr/lpr mice (MRL/lpr) spontaneously develop lacrimal gland inflammatory lesions and are a model for the human disease Sjögren's syndrome. Therapy with monoclonal antibodies (mAb) to CD4 ameliorates the autoimmune renal, vasculitic, and intraocular inflammatory lesions in MRL/lpr mice. The effect of anti...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1996-01-01 00:00:00
