Abstract:
Purpose:The three-dimensional configurations of rod and cone bipolar cell (BC) dendrites and horizontal cell (HC) processes outside rod and cone synaptic terminals have not been fully elucidated. We reveal how these neurites are mutually arranged to coordinate formation and maintenance of the postsynaptic complex of ribbon synapses in mouse and monkey retinas. Methods:Serial section transmission electron microscopy was utilized to reconstruct BC and HC neurites in macaque monkey and mouse, including metabotropic glutamate receptor 6 (mGluR6)-knockout mice. Results:Starting from sporadically distributed branching points, rod BC and HC neurites (B and H, respectively) took specific paths to rod spherules by gradually adjusting their mutual positions, which resulted in a closed alternating pattern of H‒B‒H‒B neurites at the rod spherule aperture. This order corresponded to the array of elements constituting the postsynaptic complex of ribbon synapses. We identified novel helical coils of HC processes surrounding the rod BC dendrite in both mouse and macaque retinas, and these structures occurred more frequently in mGluR6-knockout than wild-type mouse retinas. Horizontal cell processes also formed hook-like protrusions that encircled cone BC and HC neurites below the cone pedicles in the macaque retina. Conclusions:Bipolar and horizontal cell neurites take specific paths to adjust their mutual positions at the rod spherule aperture. Some HC processes are helically coiled around rod BC dendrites or form hook-like protrusions around cone BC dendrites and HC processes. Loss of mGluR6 signaling may be one factor promoting unbalanced neurite growth and compensatory neurite coiling.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Tsukamoto Y,Iseki K,Omi Ndoi
10.1167/iovs.62.1.31subject
Has Abstractpub_date
2021-01-04 00:00:00pages
31issue
1eissn
0146-0404issn
1552-5783pii
2772230journal_volume
62pub_type
杂志文章abstract:PURPOSE:To explore factors affecting the glaucoma diagnostic capability of macular thickness and circumpapillary retinal nerve fiber layer (cRNFL) thickness as determined by spectral domain-optical coherence tomography. METHODS:Area under the curve (AUC) of the receiver operating characteristics (ROC) discriminating h...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.11-7833
更新日期:2011-10-11 00:00:00
abstract::Albino rabbits were exposed to repeated microwave irradiations once daily for a month. Clinical examination was carried out for a period up to one year. No changes occurred below 300 mW./cm.2. At and above this level posterior subcapsular iridescence and posterior cortical cataracts were produced. The histologic findi...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1977-04-01 00:00:00
abstract:PURPOSE:The incidence of blindness is increasing, in part, because of abnormal ocular neovascularization. Anti-VEGF therapies have yielded impressive results; however, they are not a cure for blindness. Recently, metallothioneins (MTs) 1 and 2 have been implicated in the process of angiogenesis. Therefore, we investiga...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.14-14545
更新日期:2014-09-23 00:00:00
abstract:Purpose:To evaluate the potential of lactoferrin (Lf) as a diagnostic biomarker for ocular diseases using a meta-analytic approach. Methods:All original studies reporting an estimate of the average Lf concentration in healthy subjects and those affected by ocular diseases were searched up to March 2020. The DerSimonia...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.61.12.9
更新日期:2020-10-01 00:00:00
abstract:PURPOSE:Leukocytes play a critical role in ocular diseases such as uveitis, diabetic retinopathy, and choroidal neovascularization. Intercellular adhesion molecule (ICAM)-1 is essential for the migration of leukocytes. Control of ICAM-1 expression may lead to therapies for these diseases. Small-interfering ribonucleic ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.09-3457
更新日期:2010-01-01 00:00:00
abstract:PURPOSE:Vasoactive intestinal peptide (VIP) is expressed by corneal endothelial (CE) cells and is present in the aqueous humor, which bathes CE cells in vivo. This study demonstrated the role of CE cell VIP in maintaining the expression level of a CE differentiation marker, N-cadherin, and the hexagonal cell shape. ME...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.07-1543
更新日期:2008-08-01 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:Mutations in the retinitis pigmentosa-1-like-1 (RP1L1) gene are the major cause of autosomal dominant occult macular dystrophy (OCMD), while recessive mutations have been linked to autosomal recessive retinitis pigmentosa (arRP). We present the clinical phenotype of a large German OCMD cohort, as well as four R...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.18-24033
更新日期:2018-06-01 00:00:00
abstract:PURPOSE:Mutations in the coding region of the OPTN gene are associated with certain glaucomas. Although the function of the optineurin protein is yet to be elucidated, the most common mutation, E50K, is associated with a severe phenotype. This study explores some functional features of optineurin and its mutants. METH...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.06-0834
更新日期:2007-04-01 00:00:00
abstract::The sequential electrophysiologic and pathologic changes in the retina in ceroid-lipofuscinosis were recorded in a time-course study in the ovine model. Over a relatively short period in the course of the disease, a severe reduction in both rod and cone b-wave amplitudes developed with rod b-wave changes preceeding th...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1984-03-01 00:00:00
abstract:PURPOSE:High concentrations of unconjugated bilirubin are neurotoxic and cause brain damage in newborn infants. However, the exact level of bilirubin that may be neurotoxic in a given infant is unknown. The aim of this study was to use a quantitative measure of neural activity, the swept parameter visual evoked potenti...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.14-14261
更新日期:2014-09-02 00:00:00
abstract:PURPOSE:To investigate immediate and long-term changes in static ocular alignment with acute acquired superior oblique palsy (SOP) in monkeys. METHODS:The trochlear nerve was severed intracranially in two rhesus monkeys. After the surgery, the paretic eye was patched for 6 to 9 days, and then binocular viewing was all...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.06-1316
更新日期:2007-06-01 00:00:00
abstract:PURPOSE:To test whether triamcinolone acetonide (TA) inhibits angiogenesis induced by IL-6 or VEGF and whether this inhibition is through antagonism of the IL-6 or the VEGF receptor 2. METHODS:A rat cornea micropocket assay was used to initiate IL-6- and VEGF-mediated angiogenesis. The ability of TA or neutralizing VE...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.05-1651
更新日期:2006-11-01 00:00:00
abstract:PURPOSE:Juvenile open-angle glaucoma (JOAG) differs from primary open-angle glaucoma in that it is usually a more severe phenotype and has an earlier age of onset. Optineurin was recently associated with a variant of POAG that is characterized by intraocular pressure within normal limits: normal-tension glaucoma. The p...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.04-0107
更新日期:2004-09-01 00:00:00
abstract::Herpes simplex virus type 1 (HSV-1) can infect the cornea and achieve ganglionic latency. HSV-1 can later be activated by a variety of effectors although the exact mechanism of reactivation is unknown. Rabbits harboring latent HSV-1 strain McKrae can be induced to shed virus by ocular iontophoresis of epinephrine to t...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1988-03-01 00:00:00
abstract::The entoptic phenomenon by which one can observe leukocytes flowing in one's own parafoveal capillaries has been used to study the effect of changes in perfusion pressure on blood flow. Our measurements in humans with normal ocular fundi indicate that the retinal circulation of the parafovea is autoregulated in relati...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1977-06-01 00:00:00
abstract::Horseradish peroxidase has been injected into the dorsal lateral geniculate nucleus of macaque monkeys to label ganglion cells of the retina by retrograde axoplasmic transport. Displaced ganglion cells, with somata in the inner nuclear layer and dendrites in the inner plexiform layer, were detected by virtue of their ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1977-01-01 00:00:00
abstract:PURPOSE:DBA/2J mice are a standard preclinical glaucoma model, which spontaneously developed mutations resulting in chronic age-related pigmentary glaucoma. The goals of this study were to identify the degree of visual impairment in DBA/2J mice before and after disease onset by quantifying the optokinetic reflex respon...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.10-7106
更新日期:2011-06-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.08-3154
更新日期:2010-02-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1992-03-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.09-4468
更新日期:2010-11-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.03-0097
更新日期:2003-08-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.04-1168
更新日期:2005-10-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.16-20509
更新日期:2017-03-01 00:00:00
abstract:PURPOSE:To study the topography of photoreceptor loss early in the course of Leber congenital amaurosis (LCA) caused by RPE65 mutations. METHODS:Young patients with RPE65-LCA (n = 9; ages, 6-17 years) were studied with optical coherence tomography (OCT) in a wide region of central retina. Outer nuclear layer (ONL) thi...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.08-2121
更新日期:2008-10-01 00:00:00
abstract:PURPOSE:To determine whether constitutive signal flow arising from defective rhodopsin shut-off causes photoreceptor cell death in arrestin knockout mice. METHODS:The retinas of cyclic-light-reared, pigmented arrestin knockout mice and wild-type littermate control mice were examined histologically for photoreceptor ce...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1999-11-01 00:00:00
abstract:PURPOSE:Age-related macular degeneration is a common form of vision loss affecting older adults. The etiology of AMD is multifactorial and is influenced by environmental and genetic risk factors. In this study, we examine how 19 common risk variants contribute to drusen progression, a hallmark of AMD pathogenesis. MET...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.15-18571
更新日期:2016-04-01 00:00:00
abstract:PURPOSE:Mutations in the mitochondrial dynamin-related GTPase OPA1 cause autosomal dominant optic atrophy (ADOA), but the pathophysiology of this disease is unknown. As a first step in functional studies, this study was conducted to evaluate the expression of Opa1 in whole retina and in isolated retinal ganglion cells ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.03-1407
更新日期:2005-11-01 00:00:00
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 toxicity of various doses of intravitreal amphotericin B deoxycholate, amphotericin B lipid complex (ABLC), and liposomal amphotericin B (L-AmB). METHODS:Fifty-two rabbits were divided into two treatment groups (groups A and B). Thirteen treatments were administered intravitreally to the 104 r...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.02-1020
更新日期:2003-05-01 00:00:00