Abstract:
PURPOSE:The aim of this study was to characterize swelling pressure-thickness, swelling pressure-hydration and hydration-thickness relations of porcine cornea. METHODS:Mechanical compression tests and free swelling experiments were performed on porcine cornea. A rheometer (DHR-2, TA Instruments) with a thermally controlled fluid chamber filled with 0.9% NaCl solution was used to measure the equilibrium swelling pressure of (n = 17) corneal stromal specimens. The samples were compressed incrementally and their swelling pressure-thickness relations were obtained. In parallel to this investigation, a transient digital imaging microscope (H800-CL, American Scope Inc.), a USB autofocus camera (UM05, ViTiny), and a precision weighing scale (AGZN100, Torbal) were simultaneously used to measure the weight-thickness relation of (n = 8) corneal specimens. This experimental study gave the thickness-hydration relationship required for expressing swelling pressure measurements as a function of hydration. RESULTS:At the in vivo 666 ± 68 µm central corneal thickness, an average swelling pressure of 52 ± 13 mmHg and hydration of 3.36 ± 0.25 mg H2O/mg dry tissue were found. The swelling pressure was reported as functions of both tissue thickness and hydration. The average fixed charge density of ρF/F ~ 42.8 mM and dry density of 1.47±0.15 g/cm3 were found. The thickness-hydration relationship was only linear when the tissue thickness was within the range of physiological thickness. CONCLUSION:Overall, the physiological hydration and swelling pressure of the porcine cornea were within the same range of those reported previously for other mammalian corneas such as steers, rabbits and humans. Nevertheless, the thickness-hydration behavior of the porcine cornea was only similar to that of the human cornea.
journal_name
Curr Eye Resjournal_title
Current eye researchauthors
Hatami-Marbini H,Etebu E,Rahimi Adoi
10.3109/02713683.2013.809769subject
Has Abstractpub_date
2013-11-01 00:00:00pages
1124-32issue
11eissn
0271-3683issn
1460-2202journal_volume
38pub_type
杂志文章abstract:PURPOSE:In the limbo-corneal epithelium the stem and early precursor epithelial cell pool is confined to the limbal rim. Among the features associated with this spatial segregation is the general paucity of connexin43 (Cx43) within the limbal basal cell population and its complete absence in resident stem cells. The li...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.24.6.430.8599
更新日期:2002-06-01 00:00:00
abstract::The short and long term response of the trabecular meshwork to a phagocytic challenge and the response of the meshwork to different types of foreign particles was studied by injecting one eye of 25 adult cats with a phagocytic agent (zymosan, blood, or latex microspheres) while the fellow eye received a control soluti...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688909000037
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abstract::Purpose/Aim: Many genes have been associated with primary open-angle glaucoma (POAG). Knowing exactly where they are expressed in the eye helps to unravel POAG pathology and to select optimal targets for intervention. We investigated whether RNA in situ hybridization (RNA-ISH) is a convenient technique to obtain detai...
journal_title:Current eye research
pub_type: 杂志文章
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更新日期:2019-09-01 00:00:00
abstract:PURPOSE:This study was undertaken in order to investigate whether the production of vasodilatory prostaglandins is increased in the retinal vasculature of the diabetic rat. METHODS:Diabetes was induced in male Sprague-Dawley rats using streptozotocin. Diabetic rats were left uncontrolled for 3-4 weeks or were treated ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.18.2.79.5386
更新日期:1999-02-01 00:00:00
abstract:PURPOSE:Corneal scarring is a common poor outcome of corneal trauma. Transforming growth factor β-1 plays a vital role in corneal fibrosis, inducing keratocyte transformation to myofibroblasts. Other than corneal transplantation, no other curative treatment methods for corneal scarring are currently available. Hypercap...
journal_title:Current eye research
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doi:10.1080/02713683.2020.1820526
更新日期:2020-09-11 00:00:00
abstract:PURPOSE:To test the ability of two commercially available hydrogen peroxide disinfection solutions, one containing a surfactant and one without, to remove lipid from various contact lens materials using in vitro radiochemical experiments. METHODS:Etafilcon A, senofilcon A and balafilcon A contact lens materials were i...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713683.2012.682636
更新日期:2012-09-01 00:00:00
abstract:PURPOSE:This study was performed to compare the positive predictive value of peripapillary retinal nerve fiber layer (RNFL) thickness measurements obtained using Cirrus high-definition optical coherence tomography (Cirrus HD-OCT; Carl Zeiss Meditec, Dublin, CA) and spectral OCT/scanning laser ophthalmoscopy (SLO) (OPKO...
journal_title:Current eye research
pub_type: 临床试验,杂志文章
doi:10.3109/02713683.2013.824989
更新日期:2014-01-01 00:00:00
abstract::With Golgi impregnation, a simple amacrine cell type is described in the chick retina. The most relevant morphological feature of these retinal neurons is a single straight, radial trunk which dichotomizes tangentially in a rectilinear expansion in the 5th stratum of the inner plexiform layer (IPL). ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688908995187
更新日期:1989-02-01 00:00:00
abstract::Papavarine, cholera toxin, and isoproterenol each elevated cyclic AMP in cultured rat retinal pigment epithelium and reduced the phagocytosis of isolated rod outer segments (38-66% of controls) during a 4 hour incubation. In addition, cultured pigment epithelium was preincubated with 25 mM exogenous cyclic AMP for two...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688608995161
更新日期:1986-01-01 00:00:00
abstract:PURPOSE:Statins have been shown to reduce ocular inflammation in animal models of uveitis and to prevent development of uveitis in observational studies. There have been no experimental human studies evaluating statins' efficacy and safety in uveitis. In this study, we aimed to investigate efficacy and safety of simvas...
journal_title:Current eye research
pub_type: 杂志文章,随机对照试验
doi:10.1080/02713683.2017.1355468
更新日期:2017-12-01 00:00:00
abstract:BACKGROUND:This work compares the concentration of active ingredients and preservatives in commonly used brand name versus generic glaucoma medications. MATERIALS AND METHODS:Active ingredient and benzalkonium chloride (BAK) concentrations in brand name latanoprost and dorzolamide-timolol were each compared to two gen...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713683.2011.631722
更新日期:2012-02-01 00:00:00
abstract::From knowledge of the optical parameters of experimental animal eyes and radiometric parameters of the light source, it is possible to provide accurate retinal irradiances (dose rates). Examples are given for the rat, cat, monkey and other animals of interest. Fluorescent lamps and incandescent lamp radiances are prov...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688408997199
更新日期:1984-01-01 00:00:00
abstract::As it is known that chlorpromazine (CPZ) can bind to melanins as well as cause ocular phototoxicity, we investigated the cytotoxic effects of UV-visible irradiation of melanotic and amelanotic retinal pigment epithelial (RPE) cells in the presence of CPZ. At low concentrations (5 micrograms/ml) of CPZ a photosensitiza...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688809047014
更新日期:1988-01-01 00:00:00
abstract::The variation of central corneal thickness with age was measured weekly at 10am by ultrasound pachometry in 10 normal (5 to 19 weeks of age) and 10 alloxan-induced diabetic (9 to 19 weeks of age) rabbits. The diurnal variation of corneal thickness was also measured at 2 hour intervals for a period of 24 hours on both ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689008999611
更新日期:1990-05-01 00:00:00
abstract::Interleukin 4 (IL-4) may play a role in the development of allergic disease. We questioned whether IL-4 related phenomenon occurred on the surface of the conjunctiva during allergic conjunctivitis. Ten patients with cedar pollen-allergic conjunctivitis and 10 patients with postsurgical conjunctivitis were enrolled in ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689608997415
更新日期:1996-02-01 00:00:00
abstract:PURPOSE:To determine whether the usual clinical dose of intravitreal dexamethasone can attenuate intraocular inflammation and retinal necrosis in a rabbit model of fulminant Bacillus cereus endophthalmitis induced by crude exotoxins. METHODS:Thirty-six eyes from pigmented mongrel rabbits received intravitreal injectio...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713680490516701
更新日期:2004-10-01 00:00:00
abstract::Thyroxine-treated human lens epithelial cells, HLE B-3, were grown in either a normoxic or hyperoxic atmosphere as a first step in identifying factors related to their increased viability. Reactive oxygen species, ROS, and the apparent mitochondrial membrane potential, Delta Psi(m), were measured using fluorescent pro...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713680802167554
更新日期:2008-07-01 00:00:00
abstract:PURPOSE:To evaluate the toxicity of indocyanine green (ICG) in combination with light. METHODS:Human retinal pigment epithelial cells (ARPE-19) and rat neurosensory retinal cells (R28) were treated with four different concentrations of ICG in combination with light exposure. Cell viability, mitochondrial function, and...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713680590959312
更新日期:2005-06-01 00:00:00
abstract:PURPOSE:Extracellular matrix homeostasis is dependent in part upon a family of matrix metalloproteinases and their specific inhibitors, the tissue inhibitors of metalloproteinases (TIMPs). Recently, gene defects in TIMP-3 have been identified in the affected individuals of several families with Sorsby's fundus dystroph...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.16.2.102.5086
更新日期:1997-02-01 00:00:00
abstract::Purpose: To evaluate the effect of methylphenidate on visual field testing in healthy adults with abnormal visual field results. Methods: This prospective, randomized, controlled interventional clinical trial comprised all patients who had abnormal visual field test results and normal eye examination and ophthalmic hi...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713683.2020.1858430
更新日期:2020-12-21 00:00:00
abstract:PURPOSE:Phoria is used in the diagnosis of binocular dysfunctions, such as convergence insufficiency. A common treatment for convergence insufficiency is vision therapy, yet it is controversial whether the phoria changes as a result of rehabilitation. Phoria can vary due to the duration and/or the type of prior visual ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713683.2012.694551
更新日期:2012-11-01 00:00:00
abstract:PURPOSE:Previous studies showed that lutein and zeaxanthin, the major human retinal carotenoids, are concentrated in the macula. In this study, the carotenoids in human macular and peripheral retina and the retinal pigment epithelium (RPE) were analyzed. They were also determined in the rod outer segments (ROS) before ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.19.6.491.5276
更新日期:1999-12-01 00:00:00
abstract::Glucocorticoid-induced ocular hypertension has been demonstrated in both animals and humans. It is possible that glucocorticoid-induced changes in trabecular meshwork (TM) cells are responsible for this hypertension. In order to elaborate further the effect of glucocorticoids on the trabecular meshwork, the ultrastruc...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689309020383
更新日期:1993-09-01 00:00:00
abstract::Uveal melanoma develops in one of the most capillary-rich tissues of the body and is disseminated hematogenously. Knowledge of the nature and the spatiotemporal expression of angiogenic factors in uveal melanoma is essential to the development of new treatment strategies, especially with regard to improving survival. ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713680600865052
更新日期:2006-09-01 00:00:00
abstract::The mechanism of oxidative damage to the lens through intraocular photochemical generation of superoxide and its derivatization to other oxidants such as singlet oxygen, hydroxyl radical and hydrogen peroxide has been studied. Rat lenses when organ cultured aerobically in TC 199 containing additional amounts of ribofl...
journal_title:Current eye research
pub_type: 杂志文章,评审
doi:10.3109/02713688408997186
更新日期:1984-01-01 00:00:00
abstract:PURPOSE:The purpose of this study was to determine the retinal expression of angiogenic chemokines/cytokines in a mouse model of oxygen-induced retinopathy. METHODS:C57BL/6 (B6) mice were exposed to 75% oxygen from postnatal day 7 (P7) to P12 and then recovered in room air. Reverse transcription-polymerase chain react...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713680590923276
更新日期:2005-04-01 00:00:00
abstract:PURPOSE:To compare the clinical outcomes following Descemet's membrane endothelial keratoplasty (DMEK) with 100% air tamponade versus 10% sulfur hexafluoride (SF6) tamponade. METHODS:Retrospective analysis of 108 consecutive DMEK cases subdivided by anterior chamber tamponade with 54 eyes receiving 10% SF6 and 54 eyes...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713683.2018.1431286
更新日期:2018-04-01 00:00:00
abstract:PURPOSE:To investigate retinal imaging and ablation using femtosecond laser pulses. MATERIALS AND METHODS:Two non-amplified near-infrared femtosecond lasers were used to irradiate porcine retinal specimens in vitro. The lasers were used for tissue removal as well as multiphoton laser scanning microscopy. RESULTS:Abla...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713680801956452
更新日期:2008-04-01 00:00:00
abstract:AIM:To investigate microscopic changes in corneal morphology in chloroquine (CQ)-treated patients without corneal abnormalities being diagnosable by slit lamp microscopy. METHODS:Thirty-six eyes of 36 patients with rheumatoid arthritis (RA) were divided into two groups: group 1 included 26 patients receiving chloroqui...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713683.2011.631719
更新日期:2012-04-01 00:00:00
abstract::3-aminotriazole (3AT) is known to reduce catalase levels in ocular tissues when given intravenously or orally. Rabbits were given either 4 ml/kg of a 3M solution of 3AT intravenously or a 2% solution as drinking fluid. Intravenous 3AT administration was followed at 4 hrs by an intracameral injection of hydrogen peroxi...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688709044504
更新日期:1987-12-01 00:00:00