Abstract：
PURPOSE:Ischemic preconditioning (IPC) protects the rat retina against the injury that ordinarily follows prolonged ischemia. It has been shown that release of adenosine, de novo protein synthesis, and mediators, such as protein kinase C and K(ATP) channels, is required for IPC protection. However, the molecular mechanisms of neuroprotection by IPC are unknown. Retinal cells die after ischemia by necrosis and apoptosis. This study was undertaken to investigate the effect of IPC on apoptosis after ischemia and some of the key proteins involved in the apoptotic cascade. METHODS:Retinal ischemia or IPC was produced in anesthetized Sprague-Dawley rats by increasing intraocular pressure above systolic arterial pressure. Retinal ischemia was induced 24 hours after either IPC or sham IPC. TUNEL staining was used to quantitate the number of cells with DNA fragmentation. The authors examined expression of cleaved forms of caspases-2 and -3, bax, and poly-adenosine diphosphate-ribose-polymerase (PARP) by Western blot analysis for evidence of apoptosis-related gene expression. To examine possible mechanisms of apoptosis after ischemia, the authors studied the expression of mitogen-activated protein kinases (MAP kinases). Functional recovery after ischemia was measured using electroretinography, and retinal histology was examined and quantitated by light microscopy. RESULTS:Positive TUNEL staining, increases in caspase-2 and -3 cleavage, expression of bax and PARP, and activation of MAP kinases were found with ischemia. IPC attenuated these changes, but paradoxically, IPC itself triggered increased expression of MAP kinases. CONCLUSIONS:IPC protects against ischemic injury, in part, by diminishing apoptosis-related gene expression and by altering protein phosphorylation.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Zhang C,Rosenbaum DM,Shaikh AR,Li Q,Rosenbaum PS,Pelham DJ,Roth Skeywords:
subject
Has Abstractpub_date
2002-09-01 00:00:00pages
3059-66issue
9eissn
0146-0404issn
1552-5783journal_volume
43pub_type
杂志文章abstract：PURPOSE:Th2 lymphocytes may play a key role in the development of allergic diseases such as vernal keratoconjunctivitis (VKC). Cytokine flow cytometry of tear samples was used to identify the phenotypical and functional properties of lymphocytes at the actual site of the allergic reaction. METHODS:Tear and blood sampl...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1999-11-01 00:00:00
abstract：PURPOSE:Current understanding of the genetic risk factors for age-related macular degeneration (AMD) is not sufficiently predictive of the clinical course. The VEGF pathway is a key therapeutic target for treatment of neovascular AMD; however, risk attributable to genetic variation within pathway genes is unclear. We s...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.14-14047
更新日期：2014-05-08 00:00:00
abstract：PURPOSE:There is uncertainty in the published literature as to whether physical activity should be advocated for age-related macular degeneration (AMD) prevention. We aimed to assess prospectively the association between physical activity and the 15-year incidence of AMD in older adults. METHODS:We assessed AMD from r...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.14-15575
更新日期：2014-11-11 00:00:00
abstract：PURPOSE:Human adenovirus species D type 19 (HAdV-D19) has been associated with epidemic keratoconjunctivitis (EKC), a highly inflammatory infection of the ocular surface. Confusion exists regarding the origins of HAdV-D19. The prototype virus (HAdV-D19p) does not cause EKC, while a virus identified later with the ident...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-9656
更新日期：2012-05-14 00:00:00
abstract：PURPOSE:To document the cyclovertical ocular motor mechanism used for vertical fusion in healthy subjects, and to explore whether vertical vergence training in healthy individuals can produce objectively confirmed vertical deviations that change with head tilt, revealing a basic mechanism that can produce a pattern of ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-11368
更新日期：2013-05-03 00:00:00
abstract：PURPOSE:To decide whether the transitory coexpression of cone visual pigments described in the developing rat and gerbil retina is a universal feature of dichromatic mammalian species. METHODS:The rabbit, a species widely used in eye research, was selected for the study and a search made for the presence of cones that...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：2000-09-01 00:00:00
abstract：PURPOSE:To examine the waveform characteristics of 37 subjects with manifest latent nystagmus (MLN) and determine the manner in which visual feedback influences the nature of the waveform. METHODS:Binocular recordings of the eye movements of all subjects were undertaken using an infrared tracking system. Subjects view...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：2000-11-01 00:00:00
abstract：:A method is presented for the rapid flow cytometric determination of epidermal growth factor (EGF) receptor densities on the surface of cultured ocular cells. The technique uses a biotinylated monoclonal antibody directed against the EGF receptor in conjunction with a streptavidin-bound fluorochrome and requires the s...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1992-05-01 00:00:00
abstract：PURPOSE:To study Bardet-Biedl syndrome (BBS) in the Tunisian population and determine the presence of triallelism in the eight identified BBS genes. METHODS:DNA samples were collected from 19 consanguineous Tunisian families with BBS. Genome-wide scans were performed with microsatellite markers in 12 families, and two...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.05-1334
更新日期：2006-08-01 00:00:00
abstract：PURPOSE:This study was performed to investigate motion perception in patients with glaucoma. METHODS:A random dot motion test was used to measure three aspects of central motion perception: minimum displacement threshold (Dmin), maximum displacement threshold (Dmax), and coherence threshold (signal to noise). Motion p...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1993-12-01 00:00:00
abstract：PURPOSE:The aim of this study was to investigate the repeatability of manual measurements of choroidal thickness in healthy subjects imaged on spectral domain optical coherence tomography (OCT) using the enhanced depth imaging (EDI) technique. METHODS:Fifty consecutive, healthy, young, adult volunteers with no known e...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-6024
更新日期：2011-04-08 00:00:00
abstract：:Topically applied dipivalyl epinephrine (DPE) and related compounds have been found to inhibit passive anaphylactic reaction in rat conjunctiva. The order of activity is as follows: isoproterenol greater than DPE greater than epinephrine greater than norepinephrine. The antianaphylactic effect of DPE was antagonized b...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1980-07-01 00:00:00
abstract：Purpose:To determine whether mitochondrial DNA haplogroups or rare variants associate with primary open-angle glaucoma in subjects of European descent. Methods:A case-control comparison of age- and sex-matched cohorts of 90 primary open-angle glaucoma patients and 95 population controls. Full mitochondrial DNA sequenc...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.18-25085
更新日期：2018-09-04 00:00:00
abstract：:Primary cultures of retinal pigment epithelial (RPE) cells from cats with mucopolysaccharidosis VI (MPS VI) have been initiated from mixed populations of cells (ie, derived from the entire eyecup and represented by both pigmented and nonpigmented RPE cells). The cells were enzymatically dissociated from the eyecup and...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1985-02-01 00:00:00
abstract：PURPOSE:The authors examined the effects of both light and circadian phase on the synthetic activity of the dopamine producing enzyme, tyrosine hydroxylase (TH), in the retina of the Midas cichlid (Cichlasoma citrinellum). METHODS:TH activity was assayed in the retina-retinal pigment epithelium (RPE) complex of fish e...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1993-04-01 00:00:00
abstract：PURPOSE:The accessory lacrimal glands are assumed to contribute to the production of tear fluid, but little is known about their function. The goal of this study was to conduct an analysis of gene expression by glands of Wolfring that would provide a more complete picture of the function of these glands. METHODS:Gland...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-10750
更新日期：2012-10-01 00:00:00
abstract：PURPOSE:To determine the mechanisms underlying prostaglandin (PG) F(2)alpha-(,) carbachol (CCh)-, or latanoprost (a PGF(2)alpha analogue)-induced contraction of the pig iris sphincter muscle. METHODS:Effects of these agents on myofilament Ca(2+) sensitivity were evaluated and compared with the use of receptor-coupled ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.05-1518
更新日期：2006-11-01 00:00:00
abstract：PURPOSE:The fibrotic lens disorder posterior capsule opacification (PCO) develops in millions of patients following cataract surgery. PCO characteristics are extensive extracellular matrix (ECM) production and contraction of the posterior lens capsule, resulting in light-scattering ECM modification (wrinkling). The pro...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-9457
更新日期：2012-06-26 00:00:00
abstract：PURPOSE:To examine the influence of reticular pseudodrusen (RPD) on retinal and visual function in intermediate AMD using multifocal electroretinography (mfERG) and microperimetry. METHODS:In a prospective cross-sectional study, microperimetry and mfERG testing, followed by color fundus photography, near-infrared refl...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.14-16210
更新日期：2015-03-03 00:00:00
abstract：PURPOSE:To demonstrate the application of multiphoton fluorescence (MF) and second harmonic generation (SHG) microscopy for ex vivo characterization of the structural alterations of human corneas due to keratoconus. METHODS:Buttons of keratoconic corneas derived from penetrating keratoplasty were sent for structural a...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.06-0386
更新日期：2006-12-01 00:00:00
abstract：PURPOSE:Müller cells support retinal neurons with essential functions. Here, we aim to examine the impact of starvation and oxidative stress on glutamate uptake and mitochondrial function in Müller cells. METHODS:Cultured human retinal Müller cells (MIO-M1) were exposed to H2O2 and additional starvation for 24 hours. ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.16-19275
更新日期：2016-05-01 00:00:00
abstract：PURPOSE:To assess the role of vitamin E (VE) in age-related changes in the retinal tissues by using a mouse model of severe VE deficiency. METHODS:Pups of alpha-tocopherol transfer protein null (a-TTP(-)(/)(-)) mice were fed a VE-deficient diet for 4 or 18 months (VE (-) group). Wild-type C57BL/6 mice were fed a 0.002...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.06-0872
更新日期：2007-01-01 00:00:00
abstract：:Interocular differences in apparent size (aniseikonia) are typically associated with interocular differences in refractive error (anisometropia). Aniseikonia is generally thought to reflect disparities in retinal image size that often accompany anisometropia. This assumption was examined with seven highly anisometropi...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1983-04-01 00:00:00
abstract：PURPOSE:To analyze cone and rod phototransduction parameters from ERG a-waves in patients with RP and to determine the relationships among these parameters, age, and mode of inheritance. METHODS:Sets of four white flashes (3.2-4.4 log scotopic troland [scot td-s]) were presented in the dark. The same stimuli were late...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.02-1104
更新日期：2003-09-01 00:00:00
abstract：PURPOSE:To study factors associated with choroidal thickness (CT) and to compare CT in angle closure (AC), open angle (OA), and normal eyes. METHODS:Forty controls, 106 OA, and 79 AC subjects underwent measurements of posterior CT by spectral domain-optical coherence tomography, and of intraocular pressure (IOP), bloo...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-10483
更新日期：2012-11-27 00:00:00
abstract：:In recent years, there has been great interest in recording the pattern electroretinogram (PERG) in glaucomatous and diabetic populations. The Dawson, Trick, and Litzkow thread electrode (DTLTE) and the gold foil electrode (GFE), commonly used for recording PERGs, were compared for variations in amplitude of response,...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1992-02-01 00:00:00
abstract：PURPOSE:Autophagy is a lysosomal machinery-dependent process that catabolizes cellular components/organelles and proteins in an autophagic vacuole (AV)-dependent and -independent manner, respectively. Short-term exposure of the retina to bright light results in shortening of the outer segments, concomitant with AV form...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-6278
更新日期：2011-05-05 00:00:00
abstract：:The comparison of intracellular pH (pHi) regulation between fresh (FBCE) and cultured (CBCE) bovine corneal endothelium was extended to HCO3- transport mechanisms. Upon introduction of CO2/HCO3- Ringer's solution, there was a small, sharp acidification followed by an alkalinization .09 and .18 pH U above the HCO3- fre...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1992-10-01 00:00:00
abstract：PURPOSE:To compare intraocular pressure (IOP) measurements obtained using the Topocon noncontact tonometer (NCT), the Goldmann applanation tonometer (GAT), and the Corvis ST (CST), a newly developed tonometer with features of visualization and measurement of the corneal deformation response to an air impulse. A seconda...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-10984
更新日期：2013-01-23 00:00:00
abstract：:PURPOSE. To evaluate the shape of the posterior corneal surface in eyes with normal myopia or myopic astigmatism and the changes after LASIK and epi-LASIK. METHODS. A total of 152 eyes were included in the study. The posterior corneal elevation was measured with Scheimpflug imaging (Pentacam; Oculus, Wetzlar, Germany)...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.09-4811
更新日期：2010-07-01 00:00:00
