Journal article

Chronic isolation stress is associated with increased colonic and motor symptoms in the A53T mouse model of Parkinson's disease

Shanti Diwakarla, David I Finkelstein, Remy Constable, Olivia Artaiz, Madeleine Di Natale, Rachel M McQuade, Enie Lei, Xin-yi Chai, Mitchell T Ringuet, Linda J Fothergill, Victoria A Lawson, Laura J Ellett, Joel P Berger, John B Furness



BACKGROUND: Chronic stress exacerbates motor deficits and increases dopaminergic cell loss in several rodent models of Parkinson's disease (PD). However, little is known about effects of stress on gastrointestinal (GI) dysfunction, a common non-motor symptom of PD. We aimed to determine whether chronic stress exacerbates GI dysfunction in the A53T mouse model of PD and whether this relates to changes in α-synuclein distribution. METHODS: Chronic isolation stress was induced by single-housing WT and homozygote A53T mice between 5 and 15 months of age. GI and motor function were compared with mice that had been group-housed. KEY RESULTS: Chronic isolation stress increased plasma corticosterone..

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