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Missing optomotor head-turning reflex in the DBA/2J mouse.
Invest Ophthalmol Vis Sci. 2011 Aug 29; 52(9):6766-73.IO

Abstract

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 Morris water 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 D2 animals were consistent with glaucoma progression starting after 6 months of age. D2 mice showed no response to visual stimulation that evoked robust optomotor responses in B6 mice at any age after eye opening. Spatial frequency threshold 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.

CONCLUSIONS

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.

Authors+Show Affiliations

Department of Ophthalmology and Visual Sciences, John Moran Eye Center, University of Utah School of Medicine, Salt Lake City, UT 84132, USA. sirmook12@gmail.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21757588

Citation

Barabas, Peter, et al. "Missing Optomotor Head-turning Reflex in the DBA/2J Mouse." Investigative Ophthalmology & Visual Science, vol. 52, no. 9, 2011, pp. 6766-73.
Barabas P, Huang W, Chen H, et al. Missing optomotor head-turning reflex in the DBA/2J mouse. Invest Ophthalmol Vis Sci. 2011;52(9):6766-73.
Barabas, P., Huang, W., Chen, H., Koehler, C. L., Howell, G., John, S. W., Tian, N., Rentería, R. C., & Krizaj, D. (2011). Missing optomotor head-turning reflex in the DBA/2J mouse. Investigative Ophthalmology & Visual Science, 52(9), 6766-73. https://doi.org/10.1167/iovs.10-7147
Barabas P, et al. Missing Optomotor Head-turning Reflex in the DBA/2J Mouse. Invest Ophthalmol Vis Sci. 2011 Aug 29;52(9):6766-73. PubMed PMID: 21757588.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Missing optomotor head-turning reflex in the DBA/2J mouse. AU - Barabas,Peter, AU - Huang,Wei, AU - Chen,Hui, AU - Koehler,Christopher L, AU - Howell,Gareth, AU - John,Simon W M, AU - Tian,Ning, AU - Rentería,René C, AU - Krizaj,David, Y1 - 2011/08/29/ PY - 2011/7/16/entrez PY - 2011/7/16/pubmed PY - 2011/11/2/medline SP - 6766 EP - 73 JF - Investigative ophthalmology & visual science JO - Invest Ophthalmol Vis Sci VL - 52 IS - 9 N2 - 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 Morris water 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 D2 animals were consistent with glaucoma progression starting after 6 months of age. D2 mice showed no response to visual stimulation that evoked robust optomotor responses in B6 mice at any age after eye opening. Spatial frequency threshold 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. CONCLUSIONS: 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. SN - 1552-5783 UR - https://www.unboundmedicine.com/medline/citation/21757588/Missing_optomotor_head_turning_reflex_in_the_DBA/2J_mouse_ L2 - https://iovs.arvojournals.org/article.aspx?doi=10.1167/iovs.10-7147 DB - PRIME DP - Unbound Medicine ER -