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Missing optomotor head-turning reflex in the DBA/2J mouseBarabas, Peter ...Purpose: The optomotor reflex of DBA/2J (D2), DBA/2J-Gpnmb+ (D2-Gpnmb+), and C57BL/6J (B6) mouse strains was assayed, and the retinal ganglion cell (RGC) firing patterns, direction selectivity, ... vestibulomotor function and central vision was compared between the D2 and B6 mouse lines. Methods: Intraocular pressure (IOP) measurements, real-time PCR, and immunohistochemical analysis were used to assess the time course of glaucomatous changes in D2 retinas. Behavioral analyses of optomotor head-turning reflex, visible platform Morriswater maze and Rotarod measurements were conducted to test vision and vestibulomotor function. Electroretinogram (ERG) measurements were used to assay outer retinal function. The multielectrode array (MEA) technique was used to characterize RGC spiking and direction selectivity in D2 and B6 retinas. Results: Progressive increase in IOP and loss of Brn3a signals in D2animals were consistent with glaucoma progression starting after 6 months ofage. D2 mice showed no response to visual stimulation that evoked robust optomotor responses in B6 mice at any age after eye opening. Spatial frequencythreshold was also not measurable in the D2-Gpnmb+ strain control. ERG a- and b-waves, central vision, vestibulomotor function, the spiking properties of ON, OFF, ON-OFF, and direction-selective RGCs were normal in young D2 mice. Conclusion: The D2 strain is characterized by a lack of optomotor reflex before IOP elevation and RGC degeneration are observed. This behavioral deficit is D2 strain-specific, but is independent of retinal function and glaucoma. Caution is advised when using the optomotor reflex to follow glaucoma progression in D2 mice.Vir: Investigative ophthalmology & visual science. - ISSN 0146-0404 (Vol. 52, no. 9, 2011, str. 6766-6773)Vrsta gradiva - članek, sestavni delLeto - 2011Jezik - angleškiCOBISS.SI-ID - 29590489
Avtor
Barabas, Peter |
Huang, Wei, oftalmologija |
Chen, Hui, medicina |
Koehler, Christopher |
Howell, Gareth |
John, Simon W. M. |
Tian, Ning |
Renteria, René C. |
Križaj, David
Teme
Animals |
Behavior, Animal |
Disease Models, Animal |
Electroretinography |
Gene Expression |
Glaucoma |
Genetics |
Metabolism |
Physiopathology |
Head Movements |
Physiology |
Immunohistochemistry |
Intraocular Pressure |
Mice |
Mice, Inbred C57bl |
Mice, Inbred Dba |
Photic Stimulation |
Polymerase Chain Reaction |
Rna |
Genetics |
Reflex |
Physiology |
Retinal Ganglion Cells |
Physiology |
Polimerazna, verižna reakcija |
Bolezen, živalski modeli |
Živali |
Gensko izražanje |
Imunohistokemija |
Miši |
Miši seva C57BL |
Glava, gibanja |
RNA |
Intraokularni pritisk |
Mrežnica, ganglijske celice |
Glavkom |
Miši seva DBA |
Svetlobna stimulacija |
Refleks |
Vedenje živali |
Elektroretinografija
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Barabas, Peter | ![]() |
Huang, Wei, oftalmologija | ![]() |
Chen, Hui, medicina | ![]() |
Koehler, Christopher | ![]() |
Howell, Gareth | ![]() |
John, Simon W. M. | ![]() |
Tian, Ning | ![]() |
Renteria, René C. | ![]() |
Križaj, David | 07133 |
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