Deletion of RAGE causes hyperactivity and increased sensitivity to auditory stimuli in mice

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Abstract

The receptor for advanced glycation end-products (RAGE) is a multi-ligand receptor that belongs to the immunoglobulin superfamily of cell surface receptors. In diabetes and Alzheimer's disease, pathological progression is accelerated by activation of RAGE. However, how RAGE influences gross behavioral activity patterns in basal condition has not been addressed to date. In search for a functional role of RAGE in normal mice, a series of standard behavioral tests were performed on adult RAGE knockout (KO) mice. We observed a solid increase of home cage activity in RAGE KO. In addition, auditory startle response assessment resulted in a higher sensitivity to auditory signal and increased prepulse inhibition in KO mice. There were no significant differences between KO and wild types in behavioral tests for spatial memory and anxiety, as tested by Morris water maze, classical fear conditioning, and elevated plus maze. Our results raise a possibility that systemic therapeutic treatments to occlude RAGE activation may have adverse effects on general activity levels or sensitivity to auditory stimuli. © 2009 Sakatani et al.

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Sakatani, S., Yamada, K., Homma, C., Munesue, S., Yamamoto, Y., Yamamoto, H., & Hirase, H. (2009). Deletion of RAGE causes hyperactivity and increased sensitivity to auditory stimuli in mice. PLoS ONE, 4(12). https://doi.org/10.1371/journal.pone.0008309

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