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 permeabilized preparations by alpha-toxin. The effects of PGF(2)alpha and CCh on the phosphorylation of myosin light chain (MLC) were also analyzed. RESULTS:In the intact strips, all three of these agents induced contractions. In permeabilized strips, PGF(2)alpha and CCh, but not latanoprost, caused an additional tension development at a fixed intracellular Ca(2+) concentration ([Ca(2+)](i)) and also shifted the [Ca(2+)](i)-tension curve to the left, thus indicating that PGF(2)alpha and CCh, but not latanoprost, induced increases in Ca(2+) sensitivity (Ca(2+) sensitization). This Ca(2+) sensitization could have been inhibited by Y27632, a rho kinase inhibitor, but not by GF109203X, a protein kinase C (PKC) inhibitor or by PD98059, a mitogen-activated protein (MAP) kinase inhibitor. PGF(2)alpha increased the level of MLC phosphorylation at a constant [Ca(2+)](i). CONCLUSIONS:PGF(2)alpha, but not latanoprost, induced Ca(2+) sensitization of the pig iris sphincter muscle in an MLC phosphorylation-dependent manner through the rho-rho kinase pathway. The effect of latanoprost on the Ca(2+) sensitization mechanism was different from that of PGF(2)alpha and was thought to play a beneficial role in glaucoma treatment.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Hasegawa Y,Nishimura J,Niiro N,Hirano K,Ishibashi T,Kanaide Hdoi
10.1167/iovs.05-1518subject
Has Abstractpub_date
2006-11-01 00:00:00pages
4865-71issue
11eissn
0146-0404issn
1552-5783pii
47/11/4865journal_volume
47pub_type
杂志文章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:Trefoil factor family (TFF) peptides, and in particular TFF3, are characteristic secretory products of mucous epithelia that promote antiapoptosis, epithelial migration, restitution, and wound healing. For a long time, a receptor for TFF3 had not yet been identified. However, the chemokine receptor CXCR4 has be...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-18129
更新日期：2016-01-01 00:00:00
abstract：:Sections of the ciliary epithelium of adult sharks (Squalus acanthias) were mounted in Ussing-type chambers (area 0.2 cm2) for measurements of transepithelial potential difference (PD), short circuit current (SCC) and calculation of transepithelial resistance (R). In 15 preparations PD was aqueous side negative (-0.51...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1987-08-01 00:00:00
abstract：PURPOSE:Ischemia is a risk factor for eye diseases like ocular vein occlusion or glaucoma. To investigate effects of ischemia-reperfusion (I/R) a lot of different animal models are used, studying one or two different cell types, which creates heterogeneity of data. The aim of this study was to investigate the function ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-13372
更新日期：2014-04-28 00:00:00
abstract：PURPOSE:To characterize the features and possible mechanism of plus disease in the mouse oxygen-induced retinopathy (OIR) model for retinopathy of prematurity. METHODS:Wild-type and Adam (A Disintegrin And Metalloproteinase) knockout mice were exposed to 75% oxygen from postnatal day 7 to 12 (P7 to P12) (hyperoxia), t...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-11492
更新日期：2013-08-07 00:00:00
abstract：PURPOSE:We attempted to reproduce published studies that evaluated whether the following factors influence choroidal neovascularization (CNV) induced by laser photocoagulation in murine retinas: small interfering RNA (siRNA), cobra venom factor, complement factors C3 and C5, and complement receptor C5aR. In addition, w...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.14-15067
更新日期：2014-09-09 00:00:00
abstract：Purpose:To determine whether high glucose (HG) or diabetes alters mitochondrial morphology and promotes mitochondrial fragmentation in retinal vascular cells and thereby triggers apoptosis associated with diabetic retinopathy. Methods:To assess whether diabetes promotes mitochondrial fragmentation and thereby triggers...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.61.10.10
更新日期：2020-08-03 00:00:00
abstract：PURPOSE:To evaluate genotypic and macular morphologic correlations in patients with RPE65-, CEP290-, GUCY2D-, or AIPL1-related Leber congenital amaurosis (LCA) using spectral-domain optical coherence tomography (SD-OCT). METHODS:SD-OCT macular scans were performed in 21 patients, including 10 with RPE65, 7 with CEP290...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.09-3734
更新日期：2010-05-01 00:00:00
abstract：PURPOSE:Leukocytes play a critical role in ocular diseases such as uveitis, diabetic retinopathy, and choroidal neovascularization. Intercellular adhesion molecule (ICAM)-1 is essential for the migration of leukocytes. Control of ICAM-1 expression may lead to therapies for these diseases. Small-interfering ribonucleic ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.09-3457
更新日期：2010-01-01 00:00:00
abstract：PURPOSE:To establish mouse models for RPGR-associated diseases by generating and characterizing an Rpgr mutation (in-frame deletion of exon 4) in two different genetic backgrounds (BL/6 and BALB/c). METHODS:Gene targeting in embryonic stem (ES) cells was performed to introduce a in-frame deletion of exon 4 in the Rpgr...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.08-2742
更新日期：2010-02-01 00:00:00
abstract：:The amount of unscheduled DNA synthesis (UDS) produced in the cells adjacent to excimer laser ablations in the cornea was compared for 193-nm and 248-nm laser wavelengths. UDS is interpreted to indicate the process of excision repair of pyrimidine dimers formed in DNA. 193-nm laser ablation did not produce a statistic...
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:The growth of ocular neovascularization is regulated by a balance between stimulating and inhibiting growth factors. Somatostatin affects angiogenesis by inhibiting the growth hormone-insulin-like growth factor axis and also has a direct antiproliferative effect on human retinal endothelial cells. The purpose o...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：2000-07-01 00:00:00
abstract：Purpose:The purpose of this study was to investigate the role of optic disc torsion on the rate of progressive retinal nerve fiber layer (RNFL) thinning in patients with myopic open-angle glaucoma. Methods:We included 102 patients with myopic open-angle glaucoma accompanied by glaucomatous damage confined to a single ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.17-22534
更新日期：2017-12-01 00:00:00
abstract：PURPOSE:To investigate the foveal changes after repair of macula-off rhegmatogenous retinal detachment (RRD). METHODS:Prospective comparative case series. Twenty-four eyes of 24 patients with macula-off/fovea-on detachment (n = 9) and fovea-off detachment (n = 15) were studied. Serial optical coherence tomography (OCT...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.14-15633
更新日期：2015-01-22 00:00:00
abstract：Purpose:The purpose of this review was to provide detailed insights into the pathophysiology of myofibroblast-mediated fibrosis (scarring or late haze) after corneal injury, surgery, or infection. Method:Literature review. Results:The epithelium and epithelial basement membrane (EBM) and/or endothelium and Descemet's...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章,评审
doi：10.1167/iovs.18-24428
更新日期：2018-08-01 00:00:00
abstract：Purpose:The activation of the urokinase-type plasminogen activator and its receptor system is associated with retinal diseases. Among peptide inhibitors of this system, UPARANT acts by preventing the onset of pathologic signs of neovascular ocular diseases. We investigated whether systemic UPARANT may act in a therapeu...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.17-21593
更新日期：2017-06-01 00:00:00
abstract：PURPOSE:Research to restore some degree of vision to patients suffering from retinal degeneration is becoming increasingly more promising. Several groups have chosen electrical stimulation of the remaining network of a degenerate retina as a means to generate discrete light percepts (phosphenes). Approaches vary signif...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-11653
更新日期：2013-06-21 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: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 examine the correlation between corneal acoustic impedance and Young's modulus in a canine eye model. METHODS:Twenty canine globes were recovered from healthy animals. Corneal acoustic impedance was measured in the intact globes using two methods: a quantitative ultrasound spectroscopy method and the reflec...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-5723
更新日期：2011-02-09 00:00:00
abstract：PURPOSE:To evaluate the occurrence and time course of hem- and lymphangiogenesis after normal-risk corneal transplantation in the mouse model and to test whether pharmacologic strategies inhibiting both processes improve long-term graft survival. METHODS:Normal-risk allogeneic (C57BL/6 to BALB/c) and syngeneic (BALB/c...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.03-1380
更新日期：2004-08-01 00:00:00
abstract：PURPOSE:To test the hypothesis that acute topical dorzolamide (DZ) decreases intraocular pressure (IOP) and increases retinal and choroidal blood flow in the DBA/2J mouse model of glaucoma. METHODS:Retinal and choroidal blood flow were measured in 4- and 9-month-old DBA/2J mice, and 4-month C57BL/6 (control) mice unde...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-18291
更新日期：2016-03-01 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:Mutations in the CLN6 gene cause variant late-infantile neuronal ceroid lipofuscinosis, a lysosomal storage disorder clinically characterized by progressive loss of vision, dementia, seizures, and early death. Here, we analyzed the time course of photoreceptor loss and the role of lysosomes in nclf mice, an ani...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-12945
更新日期：2013-10-23 00:00:00
abstract：:The hydration of actin was studied by differential scanning calorimetry between -30 degrees C and 30 degrees C and by thermogravimetric analysis. The differential scanning calorimetry provided the freezable water content of G- and F-actin as a function of concentration, and the thermogravimetric analysis measured the ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1991-03-01 00:00:00
abstract：PURPOSE:To test the hypothesis that the robust expansion of bovine corneal endothelial cells (BCECs) in vitro is due to the presence of individual endothelial cells with various levels of proliferative potential. METHODS:BCECs and bovine vascular endothelial cells (ECs) derived from aorta, coronary artery, and pulmona...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.09-4970
更新日期：2010-08-01 00:00:00
abstract：PURPOSE:To investigate cytokine production by leukocytes in aqueous humor (AH) during corneal graft rejection and nitric oxide (NO) production by macrophages as a potential mediator of graft damage. METHODS:Rats received corneal allotransplants and were killed during acute rejection. Leukocytes in AH that expressed tu...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.08-1962
更新日期：2008-11-01 00:00:00
abstract：:Herpes simplex virus type 1 (HSV-1) inoculated directly into the anterior chamber of the mouse eye induced an acute inflammatory process in both the injected eye and its uninjected (contralateral) counterpart. In the former, a rapid intense inflammatory reaction developed in the anterior segment (cornea, anterior cham...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1984-09-01 00:00:00
abstract：Purpose:To characterize intraocular pressure (IOP) dynamics by identifying the sources of transient IOP fluctuations and quantifying the frequency, magnitude, associated cumulative IOP-related mechanical energy, and temporal distribution. Methods:IOP was monitored at 500 Hz for periods of 16 to 451 days in nine normal...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.19-26600
更新日期：2019-06-03 00:00:00
abstract：Purpose:Mesopic flash electroretinography (fERG) as a tool to identify N-methyl-d-aspartate receptor (NMDAR) hypofunction in subjects with schizophrenia shows great potential. We report the first fERG study in a genetic mouse model of schizophrenia characterized by NMDAR hypofunction from gene silencing of serine racem...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.61.2.16
更新日期：2020-02-07 00:00:00
