Abstract：
PURPOSE:To assess the effects of diabetes mellitus on corneal structure and function. METHODS:The authors measured endothelial permeability to fluorescein and corneal deswelling for 7.5 hours after 2 hours of hypoxic contact lens wear in 20 patients with diabetes who had nonproliferative retinopathy and 21 age-matched control subjects. Central corneal endothelial photographs were also taken. Corneal deswelling rates, expressed as percent recovery per hour (PRPH), and open eye steady state (OESS) thickness were estimated by nonlinear regression techniques. RESULTS:The OESS thickness was greater in patients with diabetes than in controls (562 +/- 35 microns versus 539 +/- 24 microns, P = 0.02). During hypoxia, the diabetic corneas swelled less (7.7% +/- 1.8% versus 9.9% +/- 1.6%, P < 0.001) and had less endothelial permeability (3.55 +/- 0.83 x 10(-4) cm/min versus 4.14 +/- 0.68 x 10(-4) cm/min, P = 0.02) than the controls. During normoxia after contact lens removal, however, diabetic and control corneas had similar deswelling rates and permeabilities. Corneal autofluorescence was increased in the patients with diabetes (8.1 +/- 3.1 versus 6.0 +/- 1.9 ng/ml fluorescein equivalents, P = .005). The endothelial cells of the two groups were morphologically similar. Within the group with diabetes, however, those with moderate nonproliferative retinopathy had larger coefficients of variation of cell area and smaller percentages of hexagonal cells than those with mild nonproliferative retinopathy. CONCLUSIONS:Although the diabetic corneas were thicker and more autofluorescent than control corneas, during hypoxia they swelled less and had decreased endothelial permeability. During normoxia, however, no difference was found in endothelial permeability or deswelling rate. The effects of diabetes on endothelial cell morphologic features appear to be related to the severity of the diabetes.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Weston BC,Bourne WM,Polse KA,Hodge DOsubject
Has Abstractpub_date
1995-03-01 00:00:00pages
586-95issue
3eissn
0146-0404issn
1552-5783journal_volume
36pub_type
杂志文章abstract：:Vitamin E is used to ameliorate retinopathy of prematurity, but little is known about baseline vitamin E levels in retinas of premature infants or the effect of vitamin E supplementation on these levels. Vitamin E and C levels were measured in mature retinas (1 month to 73 years) and in retinas of premature infants (2...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1988-01-01 00:00:00
abstract：PURPOSE:To compare the pharmacokinetics and tissue response between intravitreal and microcannulation injections into the suprachoroidal space using bevacizumab. METHODS:Sixty-two pigs were studied. Either a pars plana intravitreal bevacizumab or a viscoelastic-enhanced microcannula suprachoroidal injection was perfor...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-6291
更新日期：2011-07-01 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：PURPOSE:Subretinal drusenoid deposits (SDD) have been associated with the progression to late age-related macular degeneration (AMD). To determine whether SDD in eyes in normal macular health increases risk for early AMD, this study examined the association between presence of SDD at baseline in a cohort of older adult...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-18316
更新日期：2016-02-01 00:00:00
abstract：PURPOSE:Compensatory eye movements (CEM) maintain a stable image on the retina by minimizing retinal slip. The optokinetic reflex (OKR) and vestibulo-ocular reflex (VOR) compensate for low and high velocity stimuli, respectively. The OKR system is known to be highly nonlinear. The VOR is generally modeled as a linear s...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-18605
更新日期：2016-07-01 00:00:00
abstract：PURPOSE:To determine the mechanism of reattachment of harvested human retinal pigment epithelium (RPE) to RPE-derived extracellular matrix and Bruch's membrane. METHODS:Confluent first-to third-passage human RPE were harvested from tissue culture and plated onto RPE-derived extracellular matrix or human Bruch's membra...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1997-05-01 00:00:00
abstract：PURPOSE:To model the photochemical kinetics of corneal cross-linking with riboflavin (Rf) and confirm the model through measured oxygen concentration experiments under varying energy input conditions by UV-A irradiance and temperature modulation in ex vivo porcine cornea. METHODS:A theoretical model was developed to d...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.11-9385
更新日期：2012-04-30 00:00:00
abstract：PURPOSE:To describe a method for quantitative mapping of metamorphopsia and abnormalities of oculocentric direction in subjects with epiretinal membranes. METHODS:Binocular correspondence perimetry was performed using red and green dichoptic stimuli applied in a rectangular grid pattern. The study included 9 healthy s...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.04-0952
更新日期：2005-03-01 00:00:00
abstract：:Neuropeptide Y (NPY) is a recently discovered, amidated 36 amino acid residue neuropeptide present in many but not all sympathetic noradrenergic neurons. In the guinea-pig eye, NPY immunoreactive fibers were found to have the same distribution as noradrenergic fibers except that there were fewer at the iris dilator, i...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1984-10-01 00:00:00
abstract：PURPOSE:The aim of this study was to show the usefulness of three methods for measuring IOP: Goldmann applanation tonometry, rebound tonometry, and Ultra-High-Speed Scheimpflug technology. METHODS:The examined group consisted of 96 patients (192 eyes), including 63 women and 33 men with a mean age of 59.3 ± 19.9 years...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-13172
更新日期：2014-02-04 00:00:00
abstract：PURPOSE:To investigate the effect of hyperbaric oxygen (HBO) chamber treatment in mouse models of retinal ischemia. METHODS:Unilateral central retinal artery occlusion (CRAO) or optic nerve crush (ONC) was induced in 50 mice each, of which 30 were treated with 100% oxygen at 2 atm for 90 minutes immediately after inju...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.11-7574
更新日期：2011-09-29 00:00:00
abstract：PURPOSE:This study determined whether adenovirus-mediated transfer of the murine interferon-beta (AdCMVIFN-beta) gene protects against liver metastases arising from intraocular melanomas in mice. METHODS:A replication-deficient adenovirus vector (AdCMVIFN-beta) was used for the in vivo transfer of the murine IFN-beta ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.02-1147
更新日期：2003-07-01 00:00:00
abstract：PURPOSE:To isolate and characterize ciliary body epithelial antigens reactive with a monoclonal antibody, 2B4.14.1. METHODS:A mouse monoclonal antibody generated against human corneal endothelium, 2B4.14.1 reacts with nonpigmented epithelium of human and guinea pig ciliary bodies. The ciliary body proteins reactive wi...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1994-07-01 00:00:00
abstract：PURPOSE:To characterize the effect of postural IOP elevation and pharmacological IOP lowering on retinal ganglion cell (RGC) function in the DBA/2J mouse model of glaucoma. METHODS:Four groups of DBA/2J mice (3 months old, n = 7; 5 months old, n = 7; 10 months old, n = 7; and 11 months old, n = 8) were anesthetized by...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.07-0582
更新日期：2007-10-01 00:00:00
abstract：PURPOSE:Overloading of unfolded or misfolded proteins in the endoplasmic reticulum (ER) can cause ER stress and activate the unfolded protein response (UPR) in the cell. The authors tested whether transgene overexpression in the mouse lens would activate the UPR. METHODS:Transgenic mice expressing proteins that either...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-5650
更新日期：2011-04-04 00:00:00
abstract：PURPOSE:The objective of this study was to determine whether alteration in mucins could be detected in patients with dry eye symptoms by using the monoclonal antibody H185, which recognizes carbohydrate epitopes on mucin molecules. METHODS:Immunohistochemistry and immunoelectron microscopy was used to examine binding ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1998-12-01 00:00:00
abstract：Purpose:The purpose of this paper was to discuss manifestations of primary mitochondrial dysfunctions and whether the retinal pigment epithelium or the photoreceptors are preferentially affected. Methods:A retrospective analysis was performed of patients with clinically and laboratory confirmed diagnoses of maternally...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.61.12.12
更新日期：2020-10-01 00:00:00
abstract：PURPOSE:To investigate concentrations of growth factors and inflammatory cytokines in eyes with central (CRVO) and branch (BRVO) retinal vein occlusion before and during therapy with bevacizumab and to identify associations with disease activity. METHODS:In a prospective clinical trial, 13 eyes of patients with CRVO (...
journal_title：Investigative ophthalmology & visual science
pub_type： 临床试验,杂志文章
doi：10.1167/iovs.08-2510
更新日期：2009-03-01 00:00:00
abstract：PURPOSE:Inhibiting mechanistic target of rapamycin (mTOR) by pharmacological or genetic approaches can extend lifespan in mammals. The kinase activity of mTOR is controlled by upstream regulatory proteins and its subcellular localization. The purpose of this study was to characterize age-related alterations and functio...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.14-14758
更新日期：2014-12-09 00:00:00
abstract：Purpose:To investigate the molecular mechanisms of the antiangiogenic activity of UPARANT, an antagonist of the urokinase-type plasminogen activator receptor (uPAR), on primary human retinal endothelial cells (HREC) as a model of in vitro angiogenesis. Methods:The antiangiogenic activity of UPARANT was evaluated on en...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.16-19909
更新日期：2016-10-01 00:00:00
abstract：PURPOSE:Dietary deficiency in the retinoid precursors of the visual pigment chromophore 11-cis retinal eventually results in selective degeneration of the photoreceptor cells of the vertebrate retina. An early effect of retinoid deficiency is depletion of chromophore from the photoreceptor outer segments. Experiments w...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1993-05-01 00:00:00
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 al...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1995-02-01 00:00:00
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:Amniotic membrane transplantation (AMT) reportedly improves herpetic stromal keratitis (HSK). Here we studied the role of the amniotic membrane (AM) on macrophages. METHODS:BALB/c mice with necrotizing HSK received an AMT or tarsorrhaphy (TAR) as control. Apoptosis of F4/80+ cells was determined using the anne...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.11-7617
更新日期：2012-02-21 00:00:00
abstract：PURPOSE:The secreted Ly6/uPAR-related protein-1 (Slurp1), associated with the hyperkeratotic disorder mal de Meleda, is abundantly expressed in corneas. Here, we examine its corneal expression and functions. METHODS:Gene expression was quantified by quantitative PCR (qPCR), immunoblots, and immunofluorescent staining....
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-10759
更新日期：2012-12-19 00:00:00
abstract：:The study and therapy of age-related macular degeneration (AMD), a leading cause of blindness worldwide, have taken great strides over the past decade. During the same time, a central role for RNA in many human diseases has been discovered. We have identified anti-angiogenic functions for synthetic double stranded RNA...
journal_title：Investigative ophthalmology & visual science
pub_type： 传,历史文章
doi：10.1167/iovs.11-7328
更新日期：2011-04-06 00:00:00
abstract：PURPOSE:To determine the accommodative accuracy of infants and young children before they had had any form of clinical intervention or treatment, in an attempt to determine the difference between 'normal' and 'abnormal' visual experience for these individuals. METHODS:Nott retinoscopy was performed on 111 subjects in ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.11-8174
更新日期：2012-01-17 00:00:00
abstract：:The rate of aqueous humor flow of 19 normal subjects was measured by a fluorescein clearance technique during the day, during sleep (at night) and during sleep deprivation (at night). Subjects engaged in routine activities during the daytime measurements and slept in comfortable quarters during the nighttime measureme...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1984-06-01 00:00:00
abstract：PURPOSE:To provide a clinical and genetic description of a patient cohort with Stargardt disease (STGD1) with identifiable foveal sparing. METHODS:Patients with retinal atrophy (defined as an absence of autofluorescence) that surrounded the fovea by at least 180° and did not include the fovea were defined as having fo...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-13825
更新日期：2014-10-16 00:00:00
abstract：PURPOSE:To test whether a diet supplemented with coenzyme Q10 (CoQ10) ameliorates glutamate excitotoxicity and oxidative stress-mediated retinal ganglion cell (RGC) degeneration by preventing mitochondrial alterations in the retina of glaucomatous DBA/2J mice. METHODS:Preglaucomatous DBA/2J and age-matched control DBA...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-12564
更新日期：2014-02-18 00:00:00
