AVNS improves memory persistence in naïve mice

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Auricular transcutaneous vagus nerve stimulation improves memory persistence in naïve mice and in an intellectual disability mouse model.

Brain Stimul. 2019 Dec 31;:

Authors: Vázquez-Oliver A, Brambilla-Pisoni C, Domingo-Gainza M, Maldonado R, Ivorra A, Ozaita A

Abstract
BACKGROUND: Vagus nerve stimulation (VNS) using non-invasive approaches have attracted great attention due to their anti-epileptic, anti-depressive and pro-cognitive effects. It has been proposed that auricular transcutaneous VNS (atVNS) could benefit intellectual disability disorders, but preclinical data supporting this idea is limited.
OBJECTIVE: To develop an atVNS device for mice and to test its efficacy on memory performance in naïve mice and in a mouse model for intellectual disability.
METHODS: Naïve outbreed CD-1 mice and a model for fragile X syndrome, the Fmr1 knockout (Fmr1KO), were used to assess the effect of atVNS in the novel object-recognition memory performance.
RESULTS: We found that atVNS significantly improves memory persistence in naïve mice. Notably, atVNS was efficacious in normalizing the object-recognition memory deficit in the Fmr1KO model.
CONCLUSION: Our data show that atVNS improves memory persistence in naïve mice and in a model of intellectual disability and support further studies taking advantage of preclinical mouse models of cognitive disorders.

PMID: 31919001 [PubMed – as supplied by publisher]

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