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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

A naturally occurring mouse model of X-linked congenital stationary night blindness.

PURPOSE: To describe a naturally occurring X-linked recessive mutation, no b-wave (nob), that compromises visual transmission between photoreceptors and second-order neurons in mice. METHODS: Affected mice were identified by recording the light-evoked response of the retina, the electroretinogram (ERG). To evaluate visual transmission, cortical potentials were recorded with a scalp electrode. The inheritance pattern for nob was defined by breeding nob animals with normal mice. Retinal histologic analysis was performed by light microscopy. RESULTS: Although the photoreceptor-mediated ERG component (a-wave) was normal in nob mice, the major response component reflecting postreceptoral neuronal activity (b-wave) was missing. Visually-driven cortical activity was also abnormal in nob animals. At the light microscopic level, the nob retina appeared to have a normal cytoarchitecture. CONCLUSIONS: These findings suggest that the nob defect interferes with the transmission of visual information through the retina and that these mice are a useful model for the study of outer retinal synaptic function. In addition, this mutant mouse seems to provide an animal model for the complete form of congenital stationary night blindness, a human disorder in which patients have a profound loss of rod-mediated visual sensitivity.[1]


  1. A naturally occurring mouse model of X-linked congenital stationary night blindness. Pardue, M.T., McCall, M.A., LaVail, M.M., Gregg, R.G., Peachey, N.S. Invest. Ophthalmol. Vis. Sci. (1998) [Pubmed]
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