Abstract:
PURPOSE:We investigated the progressive degeneration of retinal and superior collicular functions in a mouse model of sustained ocular hypertension. METHODS:Focal laser illumination and injection of polystyrene microbeads were used to induce chronic ocular hypertension. Retinal ganglion cell (RGC) loss was characterized by in vivo optical coherence tomography (OCT) and immunohistochemistry. Retinal dysfunction was also monitored by the full-field ERG. Retinal ganglion cell light responses were recorded using a 256-channel multielectrode array (MEA), and RGC subtypes were characterized by noncentered spike-triggered covariance (STC-NC) analysis. Single-unit extracellular recordings from superficial layers of the superior colliculus (SC) were performed to examine the receptive field (RF) properties of SC neurons. RESULTS:The elevation of intraocular pressure (IOP) lasted 4 months in mice treated with a combination of laser photocoagulation and microbead injection. Progressive RGC loss and functional degeneration were confirmed in ocular hypertensive (OHT) mice. These mice had fewer visually responsive RGCs than controls. Using the STC-NC analysis, we classified RGCs into ON, OFF, and ON-OFF functional subtypes. We showed that ON and OFF RGCs were more susceptible to the IOP elevation than ON-OFF RGCs. Furthermore, SC neurons of OHT mice had weakened responses to visual stimulation and exhibited mismatched ON and OFF subfields and irregular RF structure. CONCLUSIONS:We demonstrated that the functional degeneration of RGCs is subtype-dependent and that the ON and OFF pathways from the retina to the SC were disrupted. Our study provides a foundation to investigate the mechanisms underlying the progressive vision loss in experimental glaucoma.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Chen H,Zhao Y,Liu M,Feng L,Puyang Z,Yi J,Liang P,Zhang HF,Cang J,Troy JB,Liu Xdoi
10.1167/iovs.14-15691subject
Has Abstractpub_date
2015-02-26 00:00:00pages
1971-84issue
3eissn
0146-0404issn
1552-5783pii
iovs.14-15691journal_volume
56pub_type
杂志文章abstract:PURPOSE:This was a pilot study conducted to examine the expression of osteopontin in uveal melanoma and to determine whether serum osteopontin can be used in detecting metastatic uveal melanoma. METHODS:Osteopontin mRNA was measured in three uveal melanoma cell lines of various invasive potential by real-time PCR. Tis...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.05-0422
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
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更新日期:2007-10-01 00:00:00
abstract:PURPOSE:To evaluate the feasibility and reliability of a standardized approach for quantitative measurements of fundus autofluorescence (AF) in images obtained with a confocal scanning laser ophthalmoscope (cSLO). METHODS:AF images (30°) were acquired in 34 normal subjects (age range, 20-55 years) with two different c...
journal_title:Investigative ophthalmology & visual science
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更新日期:2011-12-09 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
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更新日期:2014-12-02 00:00:00
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journal_title:Investigative ophthalmology & visual science
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journal_title:Investigative ophthalmology & visual science
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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:
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journal_title:Investigative ophthalmology & visual science
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更新日期:2008-06-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1990-11-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1992-07-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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更新日期:2011-12-28 00:00:00
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pub_type: 临床试验,杂志文章
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更新日期:2004-01-01 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:1991-08-01 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:
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journal_title:Investigative ophthalmology & visual science
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doi:
更新日期:2002-07-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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更新日期:2010-02-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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更新日期:2013-01-02 00:00:00
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journal_title:Investigative ophthalmology & visual science
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更新日期:2009-10-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:2002-06-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
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更新日期:2013-09-09 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
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更新日期:2014-05-06 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1995-02-01 00:00:00