Abstract：
Purpose:To examine the coaggregation and cohesion between the commonly isolated bacteria from contact lens cases. Methods:Four or five strains each of commonly isolated bacteria from contact lens cases, Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa, and Serratia marcescens, were grown, washed, mixed in equal proportions, and allowed to coaggregate for 24 hours. Lactose (0.06 M), sucrose (0.06 M), and pronase (2 mg/mL; 2 hours, 37°C) were used to inhibit coaggregation. Oral bacterial isolates of Actinomyces naeslundii and Streptococcus sanguinis were used as a positive control for coaggregation. Cohesion was performed with the ocular bacteria that demonstrated the highest level of coaggregation. Production of growth-inhibitory substances was measured by growing strains together on agar plates. Results:The oral bacterial pair showed >80% coaggregation. Coaggregation occurred between ocular strains of S. aureus (2/5) or S. epidermidis (2/5) with P. aeruginosa strains (3/5); 42% to 62%. There was only slight coaggregation between staphylococci and S. marcescens. Staphylococcus aureus coaggregated with S. epidermidis. Lactose or sucrose treatment of S. aureus but pronase treatment of P. aeruginosa reversed the coaggregation. There was no cohesion between the ocular isolates. P. aeruginosa was able to stop growth of S. aureus but not vice versa. Conclusions:This study demonstrated for the first time that ocular isolates of P. aeruginosa and S. aureus could coaggregate, probably through lectin-carbohydrate interactions. However, this may not be related to biofilm formation in contact lens cases, as there was no evidence that the coaggregation was associated with cohesion between the strains.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Datta A,Stapleton F,Willcox MDdoi
10.1167/iovs.16-20593subject
Has Abstractpub_date
2017-01-01 00:00:00pages
50-58issue
1eissn
0146-0404issn
1552-5783pii
2597833journal_volume
58pub_type
杂志文章abstract：PURPOSE:To determine whether human retinal pigment epithelial (hRPE) cells produce activin, a growth factor in the transforming growth factor beta family, and to characterize growth regulatory effects of activin on retinal pigment epithelium. METHODS:mRNA expression was examined using polymerase chain reaction with pr...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1994-06-01 00:00:00
abstract：:Membrane-bound proteins in plasma membrane enriched fractions from cultured rat RPE were analyzed by two-dimensional gel electrophoresis. Membrane proteins were characterized on three increasingly specific levels. Total protein was visualized by silver staining. A maximum of 102 separate proteins were counted in silve...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1986-02-01 00:00:00
abstract：PURPOSE:To determine new referents, or cutoff levels for tear film hyperosmolarity in the diagnosis of keratoconjunctivitis sicca (KCS) and to assess their effectiveness in independent patient groups. METHOD:A meta-analysis was performed on published data for tear osmolarity in samples of normal eyes and various subty...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章,meta分析
doi：10.1167/iovs.05-1504
更新日期：2006-10-01 00:00:00
abstract：Purpose:To employ quantitative fundus autofluorescence (qAF) imaging in rhesus macaques to noninvasively assess retinal pigment epithelial (RPE) lipofuscin in nonhuman primates (NHPs) as a model of aging and age-related macular degeneration (AMD). Methods:The qAF imaging was performed on eyes of 26 rhesus macaques (me...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.61.8.16
更新日期：2020-07-01 00:00:00
abstract：PURPOSE:The aim of this study was to investigate the repeatability of manual measurements of choroidal thickness in healthy subjects imaged on spectral domain optical coherence tomography (OCT) using the enhanced depth imaging (EDI) technique. METHODS:Fifty consecutive, healthy, young, adult volunteers with no known e...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-6024
更新日期：2011-04-08 00:00:00
abstract：PURPOSE:To determine whether the severity of glaucomatous damage in eyes with pseudoexfoliative (PEX) glaucoma is related to the amount of PEX material in the trabecular meshwork. METHODS:Trabecular meshwork and optic nerves from 19 eyes (11 donors) with PEX syndrome were studied. Eyes were chosen to represent all sta...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1997-11-01 00:00:00
abstract：PURPOSE:To biochemically characterize the receptor for connective tissue growth factor (CTGF) of human corneal fibroblasts (HCF). METHODS:Radiolabeled recombinant human CTGF was used to determine the specificity and time course of binding to low-passage cultures of HCF. The affinity and number of receptors present wer...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-9425
更新日期：2012-06-05 00:00:00
abstract：Purpose:Patients with diabetes mellitus are reported to have ocular surface defects, impaired ocular surface barrier function, and a higher incidence of corneal and conjunctival infections. Tight junctions are critical for ocular surface barrier function. The present study was designed to investigate the effect of high...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.61.11.3
更新日期：2020-09-01 00:00:00
abstract：PURPOSE:This study investigated a novel motion-on-color paradigm to functionally isolate the magnocellular pathway and evaluate its diagnostic value in preperimetric glaucoma patients. METHODS:Thirty patients with preperimetric primary open-angle glaucoma and 30 controls participated in this study. They were tested in...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-16394
更新日期：2015-07-01 00:00:00
abstract：:We have investigated alterations of the metabolic state in vitamin A-deficient (A-) corneas using phosphorus-31 (31P) nuclear magnetic resonance (NMR) spectroscopy. Comparing to the control, A- corneas showed a prominent rise of phosphocreatine (PCr) as well as a total loss of glycerophosphorylcholine (GPC). Further, ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1989-04-01 00:00:00
abstract：PURPOSE:To demonstrate the presence of corneal stromal precursors that express neural markers in vitro. METHODS:To isolate sphere-forming cells, human corneal stromal cells were subjected to a reaggregation-free neurosphere assay in medium containing methylcellulose gel matrix. To promote differentiation, the isolated...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.04-0288
更新日期：2005-05-01 00:00:00
abstract：:A pattern electroretinogram (PERG) can be recorded when the eye wearing the electrode is occluded and the stimulus is viewed with the other eye. We find that this phenomenon occurs when an Arden gold foil electrode is used, but not when either an ERG-Jet lens or a scleral lens electrode is used. Therefore, a corneal-t...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1983-11-01 00:00:00
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journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1997-09-01 00:00:00
abstract：:Wound healing in the eye may lead to undesirable sequelae such as proliferative vitreoretinopathy and scarring of glaucoma filtering fistulas. We therefore sought to manipulate in vitro two key wound healing processes--cell proliferation and contraction of extracellular matrices--using vitamin A (VA), retinoic acid (R...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1990-06-01 00:00:00
abstract：PURPOSE:To compare the optical coherence tomographic (OCT) correlates of two previously described angiographic subtypes of occult choroidal neovascularization (CNV). METHODS:We retrospectively analyzed 17 consecutive patients with previously untreated occult CNV who underwent both fluorescein angiography (FA) and volu...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章,随机对照试验
doi：10.1167/iovs.13-12302
更新日期：2013-12-09 00:00:00
abstract：PURPOSE:To evaluate clinical, immunophenotypical, and cytogenetical characteristics of 116 patients with a diagnosis of extranodal marginal zone lymphoma (EMZL) presenting primarily in the ocular region. METHODS:Specimens from all patients with a diagnosis of ophthalmic lymphoma in Denmark during the period 1980 to 20...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.08-2539
更新日期：2009-02-01 00:00:00
abstract：Purpose:This study evaluates the associations of haplotype-tagging single nucleotide polymorphisms (SNPs) in the PARL-ABCC5-HTR3D-HTR3C region with primary angle closure glaucoma (PACG), with a view to identify the responsible SNP in this region. Methods:Thirty SNPs from the PARL-ABCC5-HTR3D-HTR3C region were genotype...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.17-22304
更新日期：2017-08-01 00:00:00
abstract：PURPOSE:To evaluate the rate and location of visual field (VF) progression before and after detection of disc hemorrhage (DH). METHODS:Disc photographs of consecutive patients with glaucoma with >or=5 SITA-Standard 24-2 VF in either eye were evaluated for the presence and location of DH. Exclusion criteria included di...
journal_title：Investigative ophthalmology & visual science
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doi：10.1167/iovs.09-3446
更新日期：2009-10-01 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
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abstract：PURPOSE:To determine the role of IL-33 in resistance to Pseudomonas aeruginosa keratitis. METHODS:Corneal IL-33 mRNA and protein levels were tested in susceptible C57BL/6 (B6) and resistant BALB/c mice. B6 mice were injected with recombinant mouse IL-33 (rmIL-33) and disease severity, bacterial load, polymorphonuclear...
journal_title：Investigative ophthalmology & visual science
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doi：10.1167/iovs.09-3983
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journal_title：Investigative ophthalmology & visual science
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doi：10.1167/iovs.13-13026
更新日期：2014-01-03 00:00:00
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journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.09-3651
更新日期：2009-11-01 00:00:00
abstract：:In 188 patients from separate families with various forms of retinitis pigmentosa (RP) and 91 normal subjects, plasma fatty acids were measured as a percentage of total plasma fatty acids, and their concentrations were determined using capillary-column gas-liquid chromatography. After controlling for the effects of ag...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1992-08-01 00:00:00
abstract：:In an anisotonic medium the tendency of the lens to swell or shrink in response to the osmotic gradient is countered by a change in the content of lens solute, so that the change in the volume of lens water is minimal. This phenomenon is known as volume regulation. The rapid phase of volume regulation occurs in less t...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1981-01-01 00:00:00
abstract：PURPOSE:To compare the distributional parameters for a series of ocular biometric traits between twins and their singleton siblings, to evaluate the generalizability of twin data, as used in heritability analyses to the general population. METHODS:A series of birth, anthropometric, and 13 ocular biometric traits were ...
journal_title：Investigative ophthalmology & visual science
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doi：10.1167/iovs.11-7258
更新日期：2011-07-29 00:00:00
abstract：PURPOSE:T cells play an important role in the pathogenesis of uveitis. Recent studies have indicated that the TNFSF15 gene that encodes the TL1A protein can regulate the differentiation and activation of T cells. TNFSF15 gene polymorphisms have been found to be associated with several autoimmune disorders. A possible a...
journal_title：Investigative ophthalmology & visual science
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doi：10.1167/iovs.15-16896
更新日期：2015-07-01 00:00:00
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journal_title：Investigative ophthalmology & visual science
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journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
abstract：PURPOSE:Dry eye disease (DED) is associated with ocular surface inflammation that is thought to be mediated primarily by CD4 T cells. The purpose of this study was to investigate whether this T cell-mediated immune response is generated in the lymphoid compartment and to characterize the functional phenotype of the T c...
journal_title：Investigative ophthalmology & visual science
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更新日期：2009-08-01 00:00:00
abstract：PURPOSE:The iron carrier transferrin is expressed at remarkably high levels in normal retinas and is upregulated during retinal degeneration. The authors characterized the consequences of genetically reduced retinal transferrin production on retinal structure and function. METHODS:Hypotransferrinemic (HPX⁻/⁻) mice tre...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.11-7436
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