Abstract：
PURPOSE:The purpose of this study was to determine whether 25-hydroxyvitamin D(3) (25(OH)D(3)) and/or its active metabolite, 1α,25-dihydroxyvitamin D(3) (1,25(OH)(2)D(3)), can enhance corneal epithelial barrier function. The authors also determined if corneas contain mRNA for the vitamin D receptor (VDR) and 1α-hydroxylase, the enzyme required to convert 25(OH)D(3) to 1,25(OH)(2)D(3), and measured vitamin D metabolite concentrations in aqueous and vitreous humor. METHODS:RT-PCR was used to examine mouse, rabbit, and human corneal epithelial VDR and 1α-hydroxylase mRNA. Vitamin D metabolites were measured using a selective vitamin D derivatizing agent and mass spectroscopy. Barrier function experiments were performed by measuring inulin permeability (IP) and/or transepithelial resistance (TER) in control, 25(OH)D(3)-, and 1,25(OH)(2)D(3)-treated human and rabbit corneal epithelial monolayers cultured on permeable inserts. Ca(2+) was removed, then reintroduced to the culture medium while IP and TER readings were taken. Occludin levels were examined using Western blotting. RESULTS:All corneal samples were positive for both VDR and 1α-hydroxylase mRNA. All vitamin D metabolites except for unhydroxylated vitamin D(3) were detected in aqueous and vitreous humor. Epithelial cells showed increased TER, decreased IP, and increased occludin levels when cultured with 25(OH)D(3) and 1,25(OH)(2)D(3). CONCLUSIONS:We conclude that corneas contain mRNA for VDR and 1α-hydroxylase as well as significant vitamin D concentrations. 25(OH)D(3) and its active metabolite 1,25(OH)(2)D(3), both enhance corneal epithelial barrier function.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Yin Z,Pintea V,Lin Y,Hammock BD,Watsky MAdoi
10.1167/iovs.11-7605subject
Has Abstractpub_date
2011-09-21 00:00:00pages
7359-64issue
10eissn
0146-0404issn
1552-5783pii
iovs.11-7605journal_volume
52pub_type
杂志文章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：PURPOSE:To determine the effects of enzymes on mammalian vitreous gel and to thus infer the structural roles of hyaluronan and chondroitin sulfate in the gel. METHODS:The wet weights of bovine vitreous gels were compared before and after incubation with Streptomyces hyaluronan lyase, chondroitin ABC lyase, testicular ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1999-09-01 00:00:00
abstract：:Freshly enucleated monkey, calf, and human eyes were quantitatively perfused with mock aqueous humor through the anterior chamber by a constant pressure technique. After baseline perfusion at 15 mm Hg, intraocular pressure was raised to 45 mm Hg and later reduced back to 15 mm Hg. Calf and human (both adult and infant...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1980-12-01 00:00:00
abstract：PURPOSE:To identify the retinal pigment epithelium (RPE) surface antigen recognized by the monoclonal antibody RET-PE2. METHODS:A lambda bacteriophage complementary DNA (cDNA) expression library, representing the rat RPE cell line RPE-J, was constructed and screened with the RET-PE2 monoclonal antibody. Transient tran...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1997-10-01 00:00:00
abstract：:Three monoclonal antibodies against lens crystallin have been used to study the accumulation of specific polypeptides during development of the human lens. One antibody which recognizes an antigen common to three polypeptides with molecular weights close to 31,000 reacted equally well to the human lens cortex and nucl...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1985-07-01 00:00:00
abstract：PURPOSE:To examine the expression of five prostaglandin (PG) receptors, EP(1), EP(2), EP(3), EP(4), and FP and their corresponding mRNA transcripts in human sclera and cultured human scleral fibroblasts (HSFs). METHODS:Primary cultures of HSFs were established from donor eyes. Also, sclera from human donor eyes was sn...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：2001-12-01 00:00:00
abstract：PURPOSE:To explore changes in corneal sensitivity that develop in patients with dry eye and the relationship between sensibility and severity of the dry eye disease. METHODS:Experiments were performed in 44 patients with dry eye and 42 healthy individuals. Corneal sensitivity was measured with the Belmonte noncontact ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.04-1426
更新日期：2005-07-01 00:00:00
abstract：PURPOSE:A great deal of information about functionally significant domains of a protein may be obtained by comparison of primary sequences of gene homologues over a broad phylogenetic base. This study was designed to identify evolutionarily conserved domains of the photoreceptor disc membrane protein peripherin/rds by ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.02-1152
更新日期：2003-06-01 00:00:00
abstract：PURPOSE:Oxidative stress and metabolic dysregulation of the RPE have been implicated in AMD; however, the molecular regulation of RPE metabolism remains unclear. The transcriptional coactivator, peroxisome proliferator-activated receptor-gamma coactivator 1α (PGC-1α) is a powerful mediator of mitochondrial function. Th...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-17758
更新日期：2016-03-01 00:00:00
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 investigate whether mucosal immune responses directed against the ubiquitous parasite Toxoplasma gondii can be detected in tears of healthy humans. METHODS:Nonstimulated tears and blood were obtained from 62 healthy humans (mean age, 35 +/- 10 [SD] years). Serum anti-T. gondii immunoglobulin titers were det...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：2000-08-01 00:00:00
abstract：Purpose:To evaluate the microvascular changes in eyes with RP quantitatively using optical coherence tomography angiography (OCTA) and to determine whether the correlations between these indices and the severity of RP are significant. Methods:This was a retrospective, observational study. The medical records of 53 RP ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.17-23202
更新日期：2018-01-01 00:00:00
abstract：PURPOSE:To evaluate the ocular complications of intravitreal injection of high dose bevacizumab in monkey eyes. METHODS:Four healthy monkeys (Macaca fuscata) received an intravitreal injection of either 6.25 or 12.5 mg bevacizumab in the right eye; the left control eye received an intravitreal injection of the same vo...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.07-1542
更新日期：2009-10-01 00:00:00
abstract：PURPOSE:To investigate changes in macular pigment optical density (MPOD) and visual performance following supplementation with different macular carotenoid formulations. METHODS:Thirty-six subjects (19 male, 17 female; mean SD, age 51 13 years) were recruited into this single-masked placebo-controlled study, and were ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章,随机对照试验
doi：10.1167/iovs.12-10690
更新日期：2012-11-29 00:00:00
abstract：PURPOSE:A human biovar of Chlamydia trachomatis was used to develop a murine model of ocular chlamydial infection. The inbred mouse model will allow detailed immunologic studies during ocular infection, and use of a human biovar for infection may aid in identification of appropriate vaccine strategies against chlamydia...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1995-09-01 00:00:00
abstract：:Paired human donor corneas (age, 73 +/- 12 yr), preserved in organ culture medium, were used to evaluate the effect of human epidermal growth factor (hEGF) on endothelial wound closure rate (WCR), on morphometric parameters (cell size, shape, and density), and on cell division in the wound area. The endothelium of the...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1992-05-01 00:00:00
abstract：PURPOSE:Subcellular Ca2+ signaling patterns, such as Ca2+ waves, gradients, and oscillations, are an important aspect of cell regulation, but the molecular basis for these signaling patterns is not understood. Because Ca2+ release patterns differ among isoforms of the inositol 1,4,5-trisphosphate (InsP3) receptor, the ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1999-08-01 00:00:00
abstract：PURPOSE:To evaluate the importance of lens epithelial cell death in age-related cataract. To determine whether the large percentage of terminal deoxynucleotidyl transferase (TdT)-mediated dUTP nick-end labeling (TUNEL)-positive lens epithelial cells previously reported in human capsulotomy specimens results from apopto...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1998-12-01 00:00:00
abstract：PURPOSE:To evaluate the occurrence and time course of hem- and lymphangiogenesis after normal-risk corneal transplantation in the mouse model and to test whether pharmacologic strategies inhibiting both processes improve long-term graft survival. METHODS:Normal-risk allogeneic (C57BL/6 to BALB/c) and syngeneic (BALB/c...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.03-1380
更新日期：2004-08-01 00:00:00
abstract：PURPOSE:Mutations in the CLN6 gene cause variant late-infantile neuronal ceroid lipofuscinosis, a lysosomal storage disorder clinically characterized by progressive loss of vision, dementia, seizures, and early death. Here, we analyzed the time course of photoreceptor loss and the role of lysosomes in nclf mice, an ani...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-12945
更新日期：2013-10-23 00:00:00
abstract：:An animal model of chronic cicatrizing trachoma has been produced by repeated ocular inoculation with Chlamydia trachomatis serotype E, a genitally transmitted strain. We have now produced a chronic follicular conjunctivitis on cynomolgus monkeys by repeated inoculation with C. trachomatis serotype A, which has been i...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1982-10-01 00:00:00
abstract：PURPOSE:To explore the effect of lateral tension as a survival factor for retinal explants in vitro. The central nervous system (CNS) resides in a highly mechanical milieu. However, the importance of biomechanical homeostasis for normal CNS function has not been extensively explored. Diseases in which normal mechanical...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-11420
更新日期：2013-03-13 00:00:00
abstract：PURPOSE:To assess the impact of vitamin A supplementation at 4-month intervals on the prevalence and incidence of xerophthalmia among preschool-age children. METHODS:A stratified, random sample of 40 wards with 4766 children in Sarlahi district of Nepal was selected to participate in a randomized, controlled, communit...
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：1995-12-01 00:00:00
abstract：PURPOSE:To study the survival of adult retinal grafts prepared in a physiologically optimized way. METHODS:Twenty-three rabbits received an adult full-thickness rabbit retinal transplant positioned under the host retina, using a vitrectomy technique. The transplants were prepared using a procedure based on a previousl...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：2001-10-01 00:00:00
abstract：:In order to determine whether a possible barrier exists to diffusion of tracer into the optic nerve during development and to provide a basis for later studies of retrograde axonal transport in embryonic nerves, we studied the diffusion of horseradish peroxidase (HRP) into the nerve after vitreal injections in chicks ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1981-06-01 00:00:00
abstract：PURPOSE:There is no consensus as how to calculate orbital soft tissue volume based on CT or MRI scans. The authors sought to validate their technique and to assess the intraobserver and interobserver variability of their calculations of bony orbital volume (OV), orbital fat volume (FV), and extraocular muscle volume (M...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.07-1030
更新日期：2008-05-01 00:00:00
abstract：Purpose:To model the sensitivity of the optic nerve head (ONH) biomechanical environment to acute variations in IOP, cerebrospinal fluid pressure (CSFP), and central retinal artery blood pressure (BP). Methods:We extended a previously published numerical model of the ONH to include 24 factors representing tissue anato...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.17-22488
更新日期：2018-01-01 00:00:00
abstract：PURPOSE:The authors took advantage of the Oa1 mutant mouse in combination with other albinism mouse models (i.e., Tyrosinase and membrane-associated transporter protein [Matp]) to study the function of Oa1, the gene mutated in ocular albinism type 1, in the RPE during development and after birth. METHODS:Enzyme activi...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.05-0834
更新日期：2005-12-01 00:00:00
abstract：PURPOSE:To examine the waveform characteristics of 37 subjects with manifest latent nystagmus (MLN) and determine the manner in which visual feedback influences the nature of the waveform. METHODS:Binocular recordings of the eye movements of all subjects were undertaken using an infrared tracking system. Subjects view...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：2000-11-01 00:00:00
abstract：PURPOSE:Using a scanning laser ophthalmoscope, it was found that some patients with relative central scotomas reliably used two different preferred retinal loci (PRLs) at different stimulus illuminances. This article describes adaptations in a patient's PRL for fixation when dimming the stimulus increased the relative ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1997-08-01 00:00:00
