Abstract:
PURPOSE:To determine the effect of treatment with latanoprost on the tissue inhibitors of metalloproteinase (TIMP)-1 and -2 in cultured human ciliary muscle (HCM) cells. METHODS:Confluent serum-starved HCM cells were exposed to increasing concentrations of latanoprost acid (LA, 1 nM to 10 micro M) for 6, 18, and 24 hours. TIMP-1 and -2 mRNA transcripts were evaluated by RT-PCR. Gelatin zymography was used to measure changes in the amount of matrix metalloproteinase (MMP) in the culture medium. To evaluate the potential role of PKC, HCM cells were treated with phorbol 12-myrisate 13-acetate (PMA) in the absence or presence of the PKC inhibitor bisindolylmaleimide I (Bis I) or the PKA inhibitor KT5720. Data were quantitated by densitometry and statistically analyzed with the Student-Newman-Keuls test. RESULTS:TIMP-1 and -2 mRNA transcripts and proteins were detected in primary cultures of HCM cells. TIMP-1 mRNA levels were unchanged at 6 hours, but increased 45% +/- 17% and 54% +/- 13% in cultures exposed for 18 hours to 1 and 10 micro M LA, respectively (n = 3). In contrast, 6 hours of exposure to LA increased expression of TIMP-2 mRNA by up to 11.3% +/- 0.2% (n = 3). However, no significant induction of TIMP-2 mRNA was observed at either 18 or 24 hours (n = 3). TIMP-1 protein was significantly increased in cultures exposed to LA for 18 and 24 hours. In contrast, TIMP-2 protein expression was insignificantly different from control cultures at 6, 18, and 24 hours of treatment. HCM cells exposed to PMA for 24 hours produced similar increases in TIMP-1 mRNA levels, as seen with latanoprost (n = 5). However, no significant induction of TIMP-2 mRNA was observed. Zymographic analysis of the media from these cultures confirmed dose-dependent increases of MMP-1 at 6, 18, and 24 hours, whereas dose-dependent increases in MMP-2 were seen only after 24 hours' exposure to LA (n = 3). TIMP-1 protein levels were increased 27% +/- 9.3% and 15% +/- 11% in the media of cells exposed for 24 hours to 100 nM LA and 100 nM PMA, respectively (n = 5). The increases in TIMP-1 protein induced by LA were essentially eliminated by Bis I (n = 3) and unaffected by KT5720 (n = 3). CONCLUSIONS:For the most part, TIMP-1, and not TIMP-2, contributes to regulation of MMP within the uveoscleral outflow pathway after exposure to latanoprost. Moreover, this induction appears to be meditated by activation of PKC.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Anthony TL,Lindsey JD,Weinreb RNkeywords:
subject
Has Abstractpub_date
2002-12-01 00:00:00pages
3705-11issue
12eissn
0146-0404issn
1552-5783journal_volume
43pub_type
杂志文章abstract:PURPOSE:To evaluate the association between elevated levels of plasma pentraxin 3 (PTX3) and the development and/or progression of diabetic retinopathy (DR). METHODS:In this case-control study, 92 diabetic patients with DR (group 3), 30 diabetic patients without DR (group 2), and 41 normal subjects (group 1) were enro...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.14-14864
更新日期:2014-08-26 00:00:00
abstract:PURPOSE:To identify the defective gene in the sex-linked, recessively inherited retinal dysplasia and degeneration (rdd) chicken and to search for the human equivalent disease. METHODS:Microsatellites from chicken chromosome Z were genotyped in 77 progeny of a carrier male (rdd/+) and an affected female (rdd/W), and c...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.11-7872
更新日期:2011-09-27 00:00:00
abstract:Purpose:RPE65-associated Leber congenital amaurosis (RPE65-LCA) is a progressive severe retinal dystrophy with early profound dysfunction of rod photoreceptors followed by progressive cone photoreceptor degeneration. We aim to provide detailed information about how cone dysfunction affects color discrimination. Method...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.17-22905
更新日期:2018-01-01 00:00:00
abstract:PURPOSE:Keratoconus disease or post-LASIK corneal ectasia are increasingly treated using UV-A/riboflavin-induced corneal collagen cross-linking (CXL). However, this treatment suffers from a lack of techniques to provide an assessment in real-time of the CXL effects. Here, we investigated the potential interest of corne...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.11-9142
更新日期:2012-08-31 00:00:00
abstract:PURPOSE:To determine the influence of specific regions within Lp82 calpain on protein stability, enzymatic activity, and localization within lens and to test the influence of an Lp82 knockout mouse on normal maturational proteolysis in lens. METHODS:DNA constructs for Lp82 and Lp82-related proteins were subcloned into...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:2000-12-01 00:00:00
abstract:PURPOSE:To evaluate the effect of disease severity and optic disc size on the diagnostic accuracies of optic nerve head (ONH), retinal nerve fiber layer (RNFL), and macular parameters with RTVue (Optovue, Fremont, CA) spectral domain optical coherence tomography (SDOCT) in glaucoma. METHODS:110 eyes of 62 normal subje...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.10-5546
更新日期:2011-03-10 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:Angioscotomas are scotomata caused by vessel shadows. Their extent may be influenced by physiological and pharmacologic conditions and disease. In this study, the authors quantified angioscotomas in normal subjects using a fundus perimetry technique with a scanning laser ophthalmoscope. They further investigate...
journal_title:Investigative ophthalmology & visual science
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1996-10-01 00:00:00
abstract:PURPOSE:To elucidate the role of signals mediated by EphB4 receptor tyrosine kinase and its transmembrane ephrinB2 ligand in corneal lymphatic capillaries. METHODS:To detect expression of ephrinB2 and EphB4 in mouse corneas, immunohistochemistry of flat-mount corneas from 6- to 10-week-old wild-type, Efnb2-lacZ, and E...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.12-11436
更新日期:2013-06-12 00:00:00
abstract:PURPOSE:China has among the lowest cataract surgical rates in Asia. This study was conducted to identify barriers to cataract surgery in rural China.
METHODS:All subjects having undergone cataract surgery and persons with presenting visual acuity
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章,多中心研究
doi:10.1167/iovs.08-2783
更新日期:2009-03-01 00:00:00
abstract:Purpose:We examined the pattern and extent of connective tissue distribution in the extraocular muscles (EOMs) and determined the ability of the interconnected connective tissues to disseminate force laterally. Methods:Human EOMs were examined for collagens I, III, IV, and VI; fibronectin; laminin; and elastin using i...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.17-23003
更新日期:2018-01-01 00:00:00
abstract::Recent work demonstrated that a mannose receptor is involved in the phagocytosis of rod outer segments by the rat retinal pigment epithelium (RPE). In this study the binding of soluble mannose-containing ligands by human RPE explants is described. In addition, the authors report the isolation of a mannose receptor fro...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1991-05-01 00:00:00
abstract:Purpose:To evaluate choroidal structural changes in eyes with myopic choroidal neovascularization (mCNV) treated with anti-VEGF over 12 months. Methods:We prospectively evaluated subfoveal choroidal thickness (SFCT) and choroidal vascularity index (CVI) using spectral-domain optical coherence tomography (SD-OCT) at ba...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.16-20191
更新日期:2016-09-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1996-03-01 00:00:00
abstract:PURPOSE:The purpose of this study was to identify target antigens of autoimmune keratitis with a disease-prone mouse model. METHODS:BALB/c nude mice grafted with embryonic rat thymi (TG nude mice) develop various organ-localized autoimmune lesions, including keratitis. A hybridoma producing a monoclonal antibody (OT-2...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.05-0774
更新日期:2006-01-01 00:00:00
abstract::The secretion of the aqueous humor has been proposed to occur as the result of active Na+ transport by a ouabain-sensitive Na-K ATPase. We have examined the localization of this enzyme in the epithelium of rabbit ciliary body pars plicata using [3H]ouabain autoradiography. Single ciliary processes were isolated and in...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1988-04-01 00:00:00
abstract:PURPOSE:To investigate the neuroprotective effects of brain-derived neurotrophic factor (BDNF) against potassium cyanide (KCN)-induced retinal damage. METHODS:Rats were injected intravitreally with iodinated BDNF. Two days later, eyeballs were dissected into various parts, and the level of radioactivity in each part w...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1999-08-01 00:00:00
abstract::Using isochromatic luminance gratings and isoluminant red-green color gratings, examined luminance and color discrimination in amblyopia were examined. Complete color and luminance contrast sensitivity functions were measured monocularly from each eye of six normal and six amblyopic observers. Similar spatial frequenc...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1986-09-01 00:00:00
abstract:PURPOSE:To evaluate the nerve growth factor (NGF) plasma concentration in patients with vernal keratoconjunctivitis and to correlate it with the histopathology and immunopathology of the disease. METHODS:An immunoenzymatic assay was performed to measure NGF plasma levels in patients with vernal keratoconjunctivitis an...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1995-09-01 00:00:00
abstract:PURPOSE:To investigate the effects of retinoic acid, retinol, and 11-cis retinaldehyde on proliferation, differentiation, and survival of cultured embryonic chick neural retina cells; to describe the metabolic transformations of these retinoids by the cultured cells. METHODS:Retinoids were added to glia-free, low-dens...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1993-07-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1989-08-01 00:00:00
abstract:Purpose:Keratoconus (KTCN) is a complex eye disorder resulting in loss of visual function. Its development is affected by genetic and environmental components. The aim of this study was to unravel the role of epigenetic factors in KTCN. Methods:To verify if DNA methylation may play a role in KTCN development, reduced ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.18-25916
更新日期:2019-04-01 00:00:00
abstract:PURPOSE:Inflammatory status of RPE cells induced by A2E is essential in the development of AMD. Recent research indicated T-cell immunity was involved in the pathological progression of AMD. This study was designed to investigate how A2E suppresses immunoregulatory function of RPE cells in T-cell immunity in vitro. ME...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.15-17677
更新日期:2015-12-01 00:00:00
abstract::The life history of melanin and lipofuscin granules of human retinal pigment epithelium (RPE) was studied in 30 human eyes spanning nine decades of life. Autofluorescent granules in the cytoplasm of eye over 30 years of age were shown, ultrastructurally and through lipid solvent extraction, to be lipofuscin granules. ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1978-07-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.03-1208
更新日期:2004-08-01 00:00:00
abstract:PURPOSE:To investigate the choroidal thickness (CT) in children with amblyopia through spectral-domain optical coherence tomography (SD-OCT). METHODS:Thirty-seven children with unilateral amblyopia and 22 children with normal vision participated in the study. Cross-sectional images of the choroid of evaluated eyes wer...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.14-14439
更新日期:2014-10-14 00:00:00
abstract:PURPOSE:To evaluate the pharmacokinetics of ciliary neurotrophic factor (CNTF) delivered over a period of up to 2 years by an intraocular encapsulated cell technology (ECT) implant in patients with retinitis pigmentosa (RP) and geographic atrophy (GA). METHODS:Patients from phase 1 RP (CNTF1); phase 2 GA (CNTF2); and ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1167/iovs.12-9970
更新日期:2012-11-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1999-03-01 00:00:00
abstract::Chloride ion (Cl-) secretion by the rabbit corneal epithelium involves a catecholamine-stimulated Cl- conductance at the apical membrane, but the characteristics of the ion channel(s) responsible are unknown. A primary cell culture system was developed that induces stratified epithelial differentiation of rat and rabb...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1991-04-01 00:00:00
abstract:PURPOSE:To study relationships between glaucoma-sensitive components identified with frequency-domain analysis of global-flash multifocal electroretinogram (mfERG), regional retinal nerve fiber layer thickness (RNFLT), and local visual field sensitivity (VS). METHODS:Eleven macaque monkeys, including four controls and...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.10-6667
更新日期:2011-06-01 00:00:00