Abstract：
PURPOSE:During mammalian embryonic eyelid closure ADAM17 has been proposed to play a role as a transactivator of epidermal growth factor receptor (EGFR) signaling by shedding membrane bound EGFR ligands. However, ADAM17 also sheds numerous other ligands, thus implicating ADAM17 in additional molecular pathways. The goal of this study was to experimentally establish the role of ADAM17 and determine ADAM17-mediated pathways essential for the embryonic eyelid closure. METHODS:Wild-type (WT) and woe mice, carrying a hypomorphic mutation in Adam17, were evaluated using H&E and scanning electron microscopy. Expressions of ADAM17, EGFR, and the phosphorylated form EGFR-P were evaluated using immunohistochemistry. BrdU and TUNEL assays were used to evaluate cell proliferation and apoptosis, respectively. In vitro scratch assays of primary cultures were used to evaluate cell migration. Clinical and histologic analyses established if the hypermorphic Egfr(Dsk5) allele can rescue the woe embryonic eyelid closure. RESULTS:woe mice exhibited a failure to develop the leading edge of the eyelid and consequently failure of the embryonic eyelid closure. Expression of ADAM17 was identified in the eyelid epithelium in the cells of the leading edge. ADAM17 is essential for epithelial cell migration, but does not play a role in proliferation and apoptosis. EGFR was expressed in both WT and woe eyelid epithelium, but the phosphorylated EGFR-P form was detected only in WT. The Egfr(Dsk5) allele rescued woe eyelid closure defects, but also rescued woe anterior segment defects and the absence of meibomian glands. CONCLUSIONS:We provide in vivo genetic evidence that the role of ADAM17 during embryonic eyelid closure is to transactivate EGFR signaling.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Hassemer EL,Endres B,Toonen JA,Ronchetti A,Dubielzig R,Sidjanin DJdoi
10.1167/iovs.12-11130subject
Has Abstractpub_date
2013-01-07 00:00:00pages
132-40issue
1eissn
0146-0404issn
1552-5783pii
iovs.12-11130journal_volume
54pub_type
杂志文章abstract：PURPOSE:To visualize changes in deep optic nerve head (ONH) structures following glaucoma surgery using (3-dimensional [3D]) swept-source optical coherence tomography (SS-OCT) and to determine the clinical and structural factors associated with postoperative lamina cribrosa (LC) and prelaminar neural tissue (PLT) chang...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-11897
更新日期：2014-01-23 00:00:00
abstract：PURPOSE:To assess visual acuity recovery times and cone photopigment regeneration kinetics after a bleach in the fovea of patients with dominant retinitis pigmentosa due to rhodopsin mutations. METHODS:The authors measured acuity recovery times by computerized photostress testing in 13 patients with dominant retinitis...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1999-09-01 00:00:00
abstract：PURPOSE:The authors' previous study showed that the expression of a Rho-associated serine/threonine kinase (ROCK) is regulated during cell cycle progression in corneal epithelial cells. The present study was conducted to determine whether and how Rho/ROCK signaling regulates cell cycle progression. METHODS:Rabbit corn...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.07-0488
更新日期：2008-01-01 00:00:00
abstract：:Ultrastructural cytochemistry was used to analyze the polarized distribution of alkaline phosphatase (AP) on the plasma membranes of normal and regenerating retinal pigment epithelium (RPE) and the ciliary body epithelium in rabbits. The AP activity was concentrated on the basolateral plasma membrane in normal RPE. In...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1991-12-01 00:00:00
abstract：:Dog corneas were studied by indirect immunofluorescence with antibodies specific for pemphigus and pemphigoid antigens, laminin, and type IV collagen. The distribution of these antigens was similar to that observed in other squamous epithelia and skin. This study provides further evidence for close immunochemical simi...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1981-12-01 00:00:00
abstract：PURPOSE:To examine the relative prevalence of ocular conditions among children who are unable to perform preschool vision screening tests and the impact on measures of screening test performance. METHODS:Trained nurse and lay screeners each administered a Lea Symbols visual acuity (VA) test (Good-Lite, Inc., Steamwood...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章,多中心研究
doi：10.1167/iovs.06-0384
更新日期：2007-01-01 00:00:00
abstract：:Fixation stability of the saccadic system was investigated by infrared reflection oculography in 29 normal subjects, young and elderly. Square wave jerks consisting of spontaneous horizontal saccadic excursions of 0.5 degree and over, followed some 200 msec later by corrective saccades, were recorded in 24% of subject...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1981-02-01 00:00:00
abstract：:It is possible to record a pattern electroretinogram (PERG) of near normal amplitude in a situation when the eye containing the active electrode is occluded. Because PERG recording requires high amplification and sensitive signal retrieval techniques, the electrode in the occluded eye records a distant potential from ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1983-06-01 00:00:00
abstract：PURPOSE:To describe the normal physiological relationship between retinal arteriolar and venular caliber and retinal nerve fiber layer (RNFL), macular, and optic nerve head parameters. METHODS:The Sydney Childhood Eye Study assessed 2038 adolescents aged 12 years. Retinal vessel calibers were measured from digital fun...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章,多中心研究
doi：10.1167/iovs.09-3878
更新日期：2009-12-01 00:00:00
abstract：Purpose:Synthesis of keratan sulfate (KS) relies on coordinated action of multiple enzymes, including the N-acetylglucosamine-transferring enzyme, β-1,3-N-acetylglucosaminyltransferase-7 (β3GnT7). A mouse model deficient in β3GnT7 was developed to explore structural changes in KS and the extracellular matrix (ECM; i.e....
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.17-22716
更新日期：2018-03-01 00:00:00
abstract：PURPOSE:To investigate whether visual deficits in children with infantile spasm (IS) are the result of seizure activity or of treatment with the anticonvulsant drug vigabatrin (VGB). METHODS:Vision function was determined in three experiments by determining peak contrast sensitivity (CS) and grating acuity (GA) with t...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.06-0755
更新日期：2007-08-01 00:00:00
abstract：:The retinal pigment epithelium (RPE)-choroid was isolated from cynomolgus monkey eyes with experimental retinal detachments and the volume flow was determined in vitro using Ussing-type chambers. With zero pressure difference across the membrane, retina-to-choroid volume flow was 5.0 microliter/hr/cm2 in eyes with sub...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1988-11-01 00:00:00
abstract：PURPOSE:Macular corneal dystrophy (MCD) is a rare corneal dystrophy that is characterized by abnormal deposits in the corneal stroma, keratocytes, Descemet's membrane, and endothelium, accompanied by progressive clouding. It has been classified into three immunophenotypes--MCD types I, IA, and II--according to the seru...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：2002-02-01 00:00:00
abstract：Purpose:To investigate the impact of the rates of change of anterior lamina cribrosa surface depth (ALCSD) and optic nerve head surface depth (ONHSD) on visual field (VF) progression in glaucoma. Methods:One hundred forty-six eyes of 95 glaucoma patients had optical coherence tomography ONH imaging and VF testing at a...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.16-20509
更新日期：2017-03-01 00:00:00
abstract：:In orbital exenteration specimens from 14 rats, 93% of the mast cells were found in the lids, the limbus, and the conjunctiva, 5% in the orbital tissues, and less than 1% in the globe. The density of mast cells was highest in lid (2843/mm3), limbus (2822/mm3), and orbit (2184/mm3) and lowest in bulbar conjunctiva (794...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1979-08-01 00:00:00
abstract：PURPOSE:Retinal dopamine deficiency is a potential cause of myopia and visual deficits in retinopathy of prematurity (ROP). We investigated the cellular mechanisms responsible for lowered levels of retinal dopamine in an oxygen-induced retinopathy (OIR) mouse model of ROP. METHODS:Retinopathy was induced by exposing m...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.16-19346
更新日期：2016-06-01 00:00:00
abstract：PURPOSE:Vascular endothelial growth factor (VEGF) is required for vascular development and for ischemia-related tumor, iris, and retinal neovascularization. The role of VEGF in inflammatory corneal neovascularization is unknown and was investigated in these studies. METHODS:A rat model was used in which removal of the...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1998-01-01 00:00:00
abstract：PURPOSE:To assess the neuroprotective effects of ketorolac administration, in solution or delivered from biodegradable microspheres, on the survival of axotomized retinal ganglion cells (RGCs). METHODS:Retinas were treated intravitreally with a single injection of tromethamine ketorolac solution and/or with ketorolac-...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-18213
更新日期：2016-03-01 00:00:00
abstract：PURPOSE:The endothelium produces nitric oxide and endothelin (ET). This study was designed to investigate the endothelium-dependent regulation of the porcine ophthalmic microcirculation. METHODS:Isolated porcine eyes were perfused with a modified Langendorff setup (Hugo Sachs Elektronik KG, Freiburg, Germany) at a per...
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:Changes in gene expression were investigated after treatment of cultured human retinal pigment epithelial (RPE) cells with vitreous. This may have implications for proliferative diseases such as proliferative vitreoretinopathy. METHODS:Cells were cultured in the presence or absence of human vitreous, and gene ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1998-10-01 00:00:00
abstract：PURPOSE:Lymphatic research has progressed rapidly in recent years. Lymphatic dysfunction has been found in myriad disorders from cancer metastasis to transplant rejection; however, effective treatment for lymphatic disorders is still limited. This study investigates the role of angiopoietin-2 (Ang-2) in corneal inflamm...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-13779
更新日期：2014-04-29 00:00:00
abstract：:Dopamine, cis-flupenthixol, and dibutyryl cAMP affected the standing potential and light-evoked responses of the perfused cat eye in vitro. At micromolar concentrations, dopamine, a retinal neurotransmitter, increased the standing potential of the eye. At slightly higher concentrations, dopamine abolished the "light p...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1986-03-01 00:00:00
abstract：Purpose:To investigate by optical coherence tomography angiography (OCT-A) the choroidal vascular response to experimentally increased blood pressure in patients with central serous chorioretinopathy (CSCR). Methods:For this multicenter, observational, case-control study, we enrolled 35 patients with an established di...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章,多中心研究
doi：10.1167/iovs.18-23995
更新日期：2018-08-01 00:00:00
abstract：PURPOSE:Histone lysine methylation (HKM) is an important epigenetic mechanism that establishes cell-specific gene expression and functions in development. However, epigenetic control of retinal development is poorly understood. To study the roles of HKM in retinogenesis, the authors examined the dynamic changes of thre...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.09-4730
更新日期：2010-12-01 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:We investigated age-related change in peripapillary retinal nerve fiber layer thicknesses (RNFLT) measured with spectral domain optical coherence tomography (SD-OCT) in healthy individuals. METHODS:In this cross-sectional study, peripapillary RNFL measurement was performed using a Cirrus SD-OCT device. Linear ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-12634
更新日期：2013-12-11 00:00:00
abstract：:Evoked potentials (EP's) in response to phase-alternating gratings were recorded from normal and stereoblind or stereodefective subjects (adults and children) under monocular and binocular viewing conditions. The amplitude of the binocular EP was found to exceed the larger monocular EP in normal but not in stereodefec...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1978-09-01 00:00:00
abstract：PURPOSE:To investigate whether enzymatic collagen breakdown is an active process in the human vitreous. METHODS:Human donor eyes were used for immunohistochemistry to detect the possible presence of the matrix metalloproteinase (MMP)-induced type II collagen breakdown product col2-3/4C-short in the vitreous. Western b...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.08-3125
更新日期：2009-10-01 00:00:00
abstract：:A simple clinical method for measurement of light backscatter from defined regions of the lens in vivo is described. Light scattering was quantitated in 168 lenses of 85 "normal" subjects spanning 8 decades of life. The results indicate that light scatter from the anterior capsule does not change with age. The light s...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1980-04-01 00:00:00
abstract：PURPOSE:The possible role of protein kinase C (PKC) inhibitors in novel pressure-lowering drugs is currently under investigation. To gain further insight into regulation of contractility by PKC in trabecular meshwork (TM) and ciliary muscle (CM), the effects of various PKC inhibitors and activators were tested. METHOD...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1999-12-01 00:00:00
