Abstract:
PURPOSE:To determine the site of highest resistance to the movement of water across Bruch's membrane in humans. METHODS:A hydraulic conductivity chamber was designed that enabled us to measure flow across Bruch's membrane while ablating its subepithelial aspect using an excimer laser (193 nm). When resistance was lost, samples were fixed and processed for electron microscopy. RESULTS:Changes in the hydraulic conductivity of Bruch's membrane in response to the excimer-mediated sequential removal of tissue layers was studied in four control eyes of donors 26, 46, 61, and 76 years of age and in one eye of an 83-year-old donor with age-related macular degeneration. The number of laser pulses required to abolish the resistance in Bruch's membrane was found to be dependent on the age of the donor. The ablation rate was approximately 0.11 micron per pulse. Loss of resistance correlated with removal of layers internal to the layer of elastin. CONCLUSIONS:This study indicates that the inner collage-nous layer imparts the major resistance to fluid movement between the retinal pigment epithelium and the choroid. Aging changes in the ultrastructure of these compartments could be responsible for the decrease in hydraulic conductivity observed in early life in previous studies.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Starita C,Hussain AA,Patmore A,Marshall Jsubject
Has Abstractpub_date
1997-03-01 00:00:00pages
762-7issue
3eissn
0146-0404issn
1552-5783journal_volume
38pub_type
杂志文章abstract:PURPOSE:To test the effect of valacyclovir alone and with aspirin on the asymptomatic shedding of HSV-1 DNA in tears and saliva of healthy individuals. METHOD. The subjects (n = 45) were randomized into three groups without regard to age, sex, or race. Group 1 (n = 14) received the placebo, group 2 (n = 15) received a ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章,随机对照试验
doi:10.1167/iovs.09-3729
更新日期:2009-12-01 00:00:00
abstract:PURPOSE:To compare the effectiveness of upper punctal occlusion versus that of lower punctal occlusion in dry eye patients. METHODS:One eye's upper punctum and the contralateral eye's lower punctum were occluded with collagen plugs in 20 dry eye patients. The same procedure was performed in 20 normal subjects. The upp...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章,随机对照试验
doi:10.1167/iovs.09-5097
更新日期:2010-11-01 00:00:00
abstract:PURPOSE:To characterize the response of cultured human retinal pigment epithelial (RPE) cells to lowered environmental oxygen. METHODS:The response of cultured RPE cells to lowered oxygen environments was compared to that of cell types of presumed high (Madin-Darby canine kidney [MDCK] cells, an epithelial cell line) ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1994-05-01 00:00:00
abstract:PURPOSE:Elevated intraocular pressure (IOP), sensed as mechanical stretching by trabecular meshwork (TM) cells, triggers extracellular matrix (ECM) remodeling. In addition to changes in gene expression, alternative mRNA splicing may alter ECM protein isoforms. Changes in mRNA expression and alternative splicing of four...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.06-0875
更新日期:2007-03-01 00:00:00
abstract:PURPOSE:To investigate whether signaling pathways that incorporate protein tyrosine kinases and phosphatases regulate PKC-sensitive, volume-sensitive Cl(-) currents (I(Cl,vol)) in cultured rabbit nonpigmented ciliary epithelial cells. METHODS:Activation of I(Cl,vol) in response to hyposmotic stimulation was recorded w...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:2002-05-01 00:00:00
abstract::We evaluated the dose relationship between the antiproliferative and toxic effects of 5-fluorouracil (5-FU) on the ocular surface epithelium following experimental corneal epithelial wounding in rabbits. Central corneal epithelial defects 8 mm in diameter were made using n-heptanol. 5-FU (0.05 mg, 0.5 mg, or 5.0 mg pe...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1987-10-01 00:00:00
abstract:PURPOSE:To evaluate diurnal intraocular pressure (DIOP) among individuals with primary angle closure (PAC) or primary angle-closure suspect (PACS). Additionally, the hypothesis that greater DIOP fluctuation is related to smaller angle parameters was investigated. METHODS:Forty Caucasian newly referred untreated patien...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.14-15385
更新日期:2015-05-01 00:00:00
abstract:PURPOSE:This study investigated the role of sterile alpha/Armadillo/Toll-Interleukin receptor homology domain 1 protein (SARM1) in Wallerian-like degeneration of retinal ganglion cells (RGCs) and their axons after inducing excitotoxicity. METHODS:To induce excitotoxicity, kainic acid (KA) was injected into the vitreou...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.12-10973
更新日期:2013-04-17 00:00:00
abstract:Purpose:To validate widefield autofluorescence (AF) in vivo imaging of the retina in mice expressing green fluorescent protein (gfp) in microglia, and to monitor retinal microglia reconstitution in vivo after lethal irradiation and bone marrow transplantation. Methods:Transgenic Cx3cr1gfp/gfp and wildtype Balb/c mice ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.16-20916
更新日期:2017-04-01 00:00:00
abstract:PURPOSE:RPE cell activation is an important feature of autoimmune uveitis. This investigation focused on whether extracellular nucleotides could contribute to this activation, and the effects of ATPgammaS, UTP, and UDP on the production of IL-8 by RPE cells was studied in relation to their expression of functional P2Y ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.08-1902
更新日期:2009-03-01 00:00:00
abstract:PURPOSE:To conduct clinical and genetic studies in a European family with autosomal dominant Stargardt-like macular dystrophy (adSTGD-like MD) and to investigate the functional consequences of a novel ELOVL4 mutation. METHODS:Ophthalmic examination and mutation screening by direct sequencing of the ELOVL4 gene was per...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.04-0078
更新日期:2004-12-01 00:00:00
abstract::Glaucoma has been known to be associated with a loss of retinal ganglion cells and their axons throughout the fundus and a decreased count of photoreceptors and retinal pigment epithelial (RPE) cells in the parapapillary region. This study investigated whether glaucomatous changes of the deep retinal layer occur outsi...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1992-07-01 00:00:00
abstract:Purpose:We assess if α retinal ganglion cells (αRGCs) and intrinsically photosensitive retinal ganglion cells (ipRGCs) survive in mouse models of glaucoma. Methods:Two microliters of N-methyl-D-aspartate (NMDA; 1 mM) or PBS were injected intraocularly 7 days before sacrifice. Immunohistochemical analyses of the retina...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.19-27145
更新日期:2019-09-03 00:00:00
abstract::The circulating renin-angiotensin system (RAS) is an important determinant in maintaining adequate systemic blood pressure, and it also may modify organ-specific blood flow. All recognized RAS components have been identified in the eye. In this study, angiotensinogen (ANG) was localized using an affinity-purified anti...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1992-04-01 00:00:00
abstract:PURPOSE:To investigate morphological characteristics of optic nerve head and peripapillary region with myopia and glaucoma. METHODS:Ten normal and 17 glaucomatous myopic participants were imaged with a custom 1060-nm swept-source optical coherence tomography system. The three-dimensional images were processed and segm...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.14-14227
更新日期:2014-06-03 00:00:00
abstract:PURPOSE:To evaluate macular focal cone ERG (fERG) as a tool for reliable and early detection of central retinal function decay in cone-rod dystrophy (CRD). METHODS:A retrospective study of the time course of fERG amplitude and its relation to visual acuity alterations was performed in 47 CRD patients followed yearly f...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.13-12676
更新日期:2013-10-09 00:00:00
abstract:PURPOSE:The purpose of this study was to investigate the mutational incidence and spectrum of mitochondrial ND1 gene in subjects with Leber's hereditary optic neuropathy (LHON). METHODS:A cohort of 1281 Han Chinese probands and 478 control subjects underwent sequence analysis of mitochondrial (mt)DNA. Resultant varian...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章,多中心研究
doi:10.1167/iovs.16-19243
更新日期:2016-05-01 00:00:00
abstract:PURPOSE:To investigate functional abnormalities in mutations in the peripherin (RDS) gene leading to different clinical types of autosomal dominant retinal disease--macular degeneration and retinitis pigmentosa. METHODS:Patients from two families, one with a mutation in codon 167 (Gly167Asp) leading to macular degener...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1994-07-01 00:00:00
abstract::The entoptic phenomenon by which one can observe leukocytes flowing in one's own parafoveal capillaries has been used to study the effect of changes in perfusion pressure on blood flow. Our measurements in humans with normal ocular fundi indicate that the retinal circulation of the parafovea is autoregulated in relati...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1977-06-01 00:00:00
abstract:PURPOSE:We assessed whether partial occlusion of the nonamblyopic eye with Bangerter filters can immediately reduce suppression and promote binocular summation of contrast in observers with amblyopia. METHODS:In Experiment 1, suppression was measured for 22 observers (mean age, 20 years; range, 14-32 years; 10 females...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.14-15224
更新日期:2014-10-28 00:00:00
abstract::Ultrastructural morphometric techniques were used to quantify pericyte degeneration in retinal and uveal capillaries of streptozotocin-diabetic rats in order to assess the suitability of this small rodent model of diabetes for studies of the pathogenesis of microvascular eye disease in diabetic humans. Male, Sprague-D...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1986-05-01 00:00:00
abstract:PURPOSE:To evaluate interictal visual dysfunction in persons with migraine in terms of spatiotemporal selectivity and location within the visual pathways. METHODS:The vision of a group of 15 persons who had experienced migraine with aura was compared with that of 15 normal age-matched control subjects. A range of thre...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:2001-03-01 00:00:00
abstract::Using aqueous and vitreous fluorophotometry, the authors examined the blood-aqueous and blood-retinal barrier functions in three groups of pigmented rabbits. Epinephrine (1.25%) was applied topically five times daily and indomethacin (0.5% sesame oil suspension) was applied topically three times daily to one eye of ea...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1987-03-01 00:00:00
abstract:PURPOSE:To study pathologic changes in the photoreceptors in eyes with idiopathic macular telangiectasia (MacTel) type 2 using adaptive optics scanning laser ophthalmoscopy (AO-SLO). METHODS:Thirteen eyes with nonproliferative MacTel type 2 and 10 normal eyes underwent a full ophthalmologic examination, spectral-domai...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.11-7251
更新日期:2011-07-25 00:00:00
abstract:PURPOSE:To describe refractive status in children and young adults with cerebral palsy (CP) and relate refractive error to standardized measures of type and severity of CP impairment and to ocular dimensions. METHODS:A population-based sample of 118 participants aged 4 to 23 years with CP (mean 11.64 +/- 4.06) and an ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.09-4670
更新日期:2010-06-01 00:00:00
abstract:PURPOSE:To assess the neuroprotective effects of different glutamate modulation strategies, with a nonselective (MK801) and a selective (ifenprodil) NMDA receptor antagonist and a metabotropic glutamate receptor agonist (mGluR Group II, LY354740), in glaucoma-related in vivo rat models of retinal ganglion cell (RGC) ap...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.05-0754
更新日期:2006-02-01 00:00:00
abstract:PURPOSE:To compare two spectral domain optical coherence tomography (SD-OCT) devices for the identification of angle structures and the presence of angle closure. METHODS:This was a prospective comparative study. Consecutive patients underwent gonioscopy and anterior segment imaging using two SD-OCT devices (iVue and ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.12-10132
更新日期:2012-08-03 00:00:00
abstract:PURPOSE:Inflammation probably plays a major role in the pathogenesis of age-related macular degeneration (AMD). The authors evaluated whether AMD is associated with gene expression patterns in white blood cells (WBCs) and whether such a pattern may serve as a biomarker for the disease. METHODS:Microarray analysis of g...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.08-3019
更新日期:2010-01-01 00:00:00
abstract:PURPOSE:To determine the metrics of vertical saccades in elderly subjects for comparison in neurologic disease. METHODS:Sixteen elderly subjects, ten middle-aged subjects, and thirteen young subjects were examined using a magnetic search coil technique. Saccades were measured to predictable vertical target steps and m...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1993-07-01 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