Abstract:
PURPOSE:Ethacrynic acid (ECA) has been shown to increase facility of aqueous outflow in whole eyes and perfused anterior segments, to open up spaces between cells in the trabecular meshwork and inner wall of Schlemm's canal, and to cause separation and retraction of trabecular meshwork and endothelial cells in culture. One mechanism by which ECA has been proposed to act in cells is via disruption of microtubules, leading to cell retraction. Although it is known that ECA can inhibit de novo assembly of microtubules from tubulin subunits in vitro, we wanted to determine, as a better correlate to the proposed effect of ECA in cells, whether ECA could disrupt microtubule polymers that had reached steady state. We also wanted to determine whether calcium ion could enhance this process. METHODS:We therefore assembled purified and crude porcine brain tubulin to steady state at 37 degrees C and then added ECA and/or calcium. Reaction kinetics were followed spectrophotometrically. RESULTS:We found that ECA effectively disrupted assembled microtubules in vitro. Although 0.8-1.0 mM ECA was required to produce a half-maximal effect in pure tubulin microtubules and 0.2-0.3 mM ECA was necessary with crude microtubule protein, significant disassembly also occurred in the 0.01-0.2 mM range. Calcium had a greater maximal effect than ECA, and was more potent on a molar basis, showing half maximal effect between 2 and 12 microM free calcium ion. Combination experiments showed that ECA did not act synergistically with calcium to increase microtubule disassembly. CONCLUSIONS:Our results are consistent with the proposed disruptive action of ECA on the assembled microtubules of outflow pathway cells, but do not support a rise in intracellular calcium as being an added factor.
journal_name
Curr Eye Resjournal_title
Current eye researchauthors
O'Brien ET,Lee RE 3rd,Epstein DLdoi
10.3109/02713689609017644subject
Has Abstractpub_date
1996-09-01 00:00:00pages
985-90issue
9eissn
0271-3683issn
1460-2202journal_volume
15pub_type
杂志文章abstract::Retinal degeneration is a leading cause of untreatable blindness in the industrialised world. It is typically irreversible and there are few curative treatments available. The use of stem cells to generate new retinal neurons for transplantation purposes has received significant interest in recent years and is beginni...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713683.2019.1669665
更新日期:2020-03-01 00:00:00
abstract::Goggles that degrade the retinal image produce axial enlargement of the ocular globe and large myopic refractive errors. Many authors have assumed that visual image degradation itself leads to myopia. Hodos and co-authors have shown, however, that goggled eyes in chicks are considerably warmer than normal. Such temper...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689308999467
更新日期:1993-03-01 00:00:00
abstract:OBJECTIVES:To evaluate the suitablity of commercially available moisture retention eyewear for treating evaporative dry eye. METHODS:Eleven patients with evaporative dry eyes were prescibed moisture retention eyewear for 3 months in addition to regular lubricant eye drops. Frequency and severity of dry eye symptoms, c...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713683.2014.932389
更新日期:2015-05-01 00:00:00
abstract::A major glycoprotein of relative molecular weight of 130,000 daltons of chick lens cell membranes was identified by Concanavalin-A staining and enriched for by Con A-Sepharose chromatography. Using both Con A binding and immunological analyses with a specific polyclonal antibody, the glycoprotein was detected in chick...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688608995176
更新日期:1986-12-01 00:00:00
abstract:PURPOSE:To investigate the efficacy of intravitreal piperacillin/tazobactam (250 microg/0.1 ml) in the treatment of experimental Pseudomonas aeruginosa endophthalmitis in rabbits. MATERIALS AND METHODS:Twenty New Zealand White albino rabbits were used in this study. The rabbits were divided into two groups (10 rabbits...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713680490894180
更新日期:2005-01-01 00:00:00
abstract:PURPOSE:To study the effect of cataract surgery with intraocular lens (IOL) on frequency doubling perimetry (FDP). METHODS:Patients aged 40 years or above seen at our outpatient clinic with no ocular pathology except for visually significant cataract and visual acuity 6/24 or better were eligible. They underwent FDP b...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713680490904278
更新日期:2005-02-01 00:00:00
abstract::Purpose: To evaluate the microvascular density of the peripapillary and parafoveal areas of the eyes with primary angle closure disease (PACD) using optical coherence tomography angiography (OCTA). Materials and methods: An observational study was conducted with 76 PACD patients (29 eyes with primary angle closure sus...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713683.2020.1849728
更新日期:2020-11-26 00:00:00
abstract:PURPOSE:The experiments were designed to provide details on the characteristics of rhodopsin regeneration in the rod photoreceptors of diabetic mice and to evaluate their mechanistic basis. METHODS:A genetically-derived diabetic albino mouse was developed. An excised albino mouse eye preparation was used. The preparat...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.17.10.979.5236
更新日期:1998-10-01 00:00:00
abstract:PURPOSE:To compare the long-term outcomes and recurrence rate of extensive versus limited subconjunctival pterygium excision with conjunctival autograft. METHODS:This retrospective study included 135 consecutive patients (161 eyes) who had pterygium excision with conjunctival autograft at the cornea performed at the c...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713680802045099
更新日期:2008-05-01 00:00:00
abstract:PURPOSE:Disulfiram (DSF) exhibits a wide variety of biological activities, including an anti-inflammatory action, on which we focused our attention. The aim of the present study was to investigate the effect of oral DSF on endotoxin-induced uveitis (EIU) in rats. METHODS:We investigated its effect upon cellular infilt...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713683.2010.495442
更新日期:2010-10-01 00:00:00
abstract:PURPOSE:Accumulation of lipoprotein-derived lipids including esterified and unesterified cholesterol in Bruch's membrane of human eyes is a major age-related change involved in initiating and sustaining soft drusen in age-related macular degeneration (AMD). The apolipoprotein (apo) A-I mimetic peptide 4F is a small ant...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713683.2017.1370118
更新日期:2018-01-01 00:00:00
abstract:PURPOSE:To study the effect of Na-K pump and K(ATP) channel inhibition on the diameter and the adenosine-induced vasodilation of small retinal arterioles. METHODS:Thirty isolated porcine arterioles with a diameter of approximately 70 microm were mounted in a double-barrelled pipette system placed in an organ bath, and...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.25.1.23.9966
更新日期:2002-07-01 00:00:00
abstract::DNA sequence analysis of overlapping shotgun and restriction fragments have revealed the entire sequence of the human lens fiber cell intrinsic membrane protein MP19 gene (also termed MP17, MP18, and MP20). The 8,056 bp MP19 gene contains 5 exons encoding a mature protein of 173 amino acids, which displayed a very hig...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689309033503
更新日期:1993-12-01 00:00:00
abstract:PURPOSE:To evaluate 24-hr intraocular pressure (IOP) and blood pressure (BP) with timolol or latanoprost/timolol fixed combination (LTFC). METHODS:Patients with primary open-angle glaucoma or ocular hypertension with normal blood pressure were randomized to LTFC, dosed each evening, or timolol dosed twice daily in a c...
journal_title:Current eye research
pub_type: 杂志文章,随机对照试验
doi:10.1080/02713680902850075
更新日期:2009-05-01 00:00:00
abstract:PURPOSE:This study aims to evaluate and correlate the levels of interleukin-6 (IL-6) and thrombin-antithrombin III complex (TAT) in the vitreous of patients with different vitreoretinal pathologies. METHODS:Vitreous samples were collected from 78 patients scheduled for pars plana vitrectomy at a tertiary medical cente...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713683.2017.1313432
更新日期:2017-09-01 00:00:00
abstract:PURPOSE:Unoprostone isopropyl is an ocular hypotensive that was originally produced as a prostaglandin F2alpha analogue and is eventually recognized as a synthetic docosanoid. The compound is recently suggested to have potent neuroprotective ability in the retina. The purpose of this study is to test whether and how th...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713680490889465
更新日期:2004-12-01 00:00:00
abstract::We established growth curves for Propionibacterium acnes isolates recovered from eyes with chronic postoperative endophthalmitis. The growth curve plotted the average of the duplicate bacterial concentration against time. The generation time for P. acnes calculated from the growth curves was approximately 5.1 hours. T...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689408999875
更新日期:1994-06-01 00:00:00
abstract::After the debridement of the entire corneal epithelium of the rabbit eye, epithelial cells of conjunctival origin cover the denuded corneal surface. Under such experimental conditions, the rate of wound healing is considerably delayed and total regeneration is completed within 15 to 20 days, allowing evaluation of var...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688709025230
更新日期:1987-10-01 00:00:00
abstract::Achieving the long-term goal of successful engraftment of retinal tissues into eyes blinded by endogenous retinal failure will depend, at least in part, on controlling the immune response to antigens expressed on retinal grafts. Since histoincompatible tissues will have to be used for such transplants, methods to cont...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689209000743
更新日期:1992-07-01 00:00:00
abstract::The reactions of lectins with dissociated and cultured epithelial cells from hyperplastic lenses of two unrelated chick strains, Hy-1 and Hy-2, characterised by hyperplasia of the lens epithelium, and lenses of a normal genotype (N) were investigated using four different lectins. Three methods of monitoring lectin-bin...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688509000845
更新日期:1985-03-01 00:00:00
abstract:PURPOSE:To characterize the effect of glutamate receptor activation/inhibition on the secretion of vascular endothelial growth factor (VEGF) in retina-specific glial (Müller) cells under experimental conditions of hyperglycemia and hypoxia, two intrinsic pathologic conditions of diabetic retinopathy. METHODS:Purified ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713683.2010.483312
更新日期:2010-08-01 00:00:00
abstract:PURPOSE:Psychiatric conditions and not just the treatments themselves might be involved in the pathophysiology of dry eye disease (DED). The aim of our study was to evaluate the association between depression and DED using objective and subjective tests in patients with newly diagnosed depressive disorder who were not ...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713683.2016.1236966
更新日期:2017-05-01 00:00:00
abstract::Arachidonic acid metabolism via the cyclooxygenase pathway and the effects of aspirin and indomethacin were studied in whole retinas of rats with streptozotocin-induced diabetes. Diabetes was induced by intravenous injection of streptozotocin (60 mg/kg) and the animals were examined 5-6 weeks later. Whole retinas of n...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713688409000813
更新日期:1984-09-01 00:00:00
abstract::Purpose: To evaluate the correlation between pain during cataract surgery and preoperative anxiety.Methods: This prospective observational masked study included 103 eyes of 103 consecutive patients who underwent routine clear corneal incision phacoemulsification surgery at the Department of Ophthalmology, Rambam Healt...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713683.2019.1666996
更新日期:2020-04-01 00:00:00
abstract::Purpose: To evaluate the effect of isolated oblique muscle weakening on horizontal deviation in patients with A- and V-pattern exotropia.Methods: The medical records of patients who underwent bilateral oblique muscle weakening for A- and V-pattern exotropia associated oblique muscle overaction between 2011 and 2018 we...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1080/02713683.2019.1660795
更新日期:2020-02-01 00:00:00
abstract:PURPOSE:To evaluate the stability of successive applanation tonometry measurements in glaucomatous eyes. METHODS:A prospective, comparative, randomized, and evaluator-masked study was conducted in a tertiary medical center. Sixty-seven patients with glaucoma attending our glaucoma clinic underwent four successive intr...
journal_title:Current eye research
pub_type: 杂志文章,随机对照试验
doi:10.3109/02713681003678824
更新日期:2010-06-01 00:00:00
abstract:PURPOSE:To evaluate the effect of the birth weight and the postconceptional age on the tear production of preterm and term newborn infants and to evaluate the changes in tear production during the first two months of life. SUBJECTS--METHODS: Both eyes of medically stable term and preterm infants were included in the st...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.28.2.145.26235
更新日期:2004-02-01 00:00:00
abstract:PURPOSE:Retinal ischemia and neovascularization (NV) are important components of many retinal disorders. To facilitate further investigation of retinal ischemia and neovascularization, we sought to develop a reproducible in vivo experimental model of venous occlusion by photodynamic thrombosis in rats. METHODS:After a...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.1076/ceyr.16.1.26.5116
更新日期:1997-01-01 00:00:00
abstract::Fresh isolates of neonatal human corneal endothelial cells were maintained in tissue culture using a technique employing collagen-coated, dextran-based microcarrier beads. This method provides large yields of endothelial cells suitable for biochemical and/or transplant studies without exposing the cells to enzymatic p...
journal_title:Current eye research
pub_type: 杂志文章
doi:10.3109/02713689009000051
更新日期:1990-01-01 00:00:00
abstract:PURPOSE:Due to a possible link in humans between atherosclerosis, a high-fat diet, and the development of age-related retinal degenerations, we investigated retinal changes with age and diet in high-fat-fed C57BL/6 mice, a mouse model of human atherosclerosis. METHODS:We fed C57BL/6J mice either a normal chow diet or ...
journal_title:Current eye research
pub_type: 杂志文章
doi:
更新日期:2000-01-01 00:00:00