Journal article

Brain Zinc Deficiency Exacerbates Cognitive Decline in the R6/1 Model of Huntington's Disease.

Scott Ayton, Peng Lei, Ambili T Appukuttan, Thibault Renoir, Simote Foliaki, Feng Chen, Paul A Adlard, Anthony J Hannan, Ashley I Bush

Neurotherapeutics | Springer Nature | Published : 2020

Abstract

There is currently no disease-modifying treatment for Huntington's disease (HD), which is characterized by chorea motor impairment and cognitive decline. The zinc ionophore, PBT2, was previously shown to improve the phenotype of a HD mouse model and reported efficacy in certain cognitive tests in a phase II clinical trial in HD. Here we report that zinc deficiency is a feature of the hippocampus and cortex in the R6/1 mouse model of HD. Low cortical zinc has been shown to induce cognitive impairment, and indeed, dietary restriction of zinc in R6/1 mice was associated with cognitive impairment in the Y-maze, an exacerbated hippocampal long-term potentiation (LTP) deficit and reduction of AMPA..

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