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- W3136163368 abstract "Irisin is a hormone cleaved from fibronectin type-III domain-containing protein 5 in response to exercise and may be therapeutic in Alzheimer's disease (AD). Irisin is shown to repair damage caused by midlife cardiometabolic risk factors for AD (i.e., diabetes mellitus; hypertension), prevent neural amyloid beta aggregation and reduce neuroinflammation. However, there are no investigations of irisin's effect on AD-associated tauopathy in the brain. This study begins to address this gap in knowledge.Transgenic htau mice that selectively develop age-related tauopathy were treated with recombinant irisin (100 µg/kg weekly i.p.) beginning at a pre-symptomatic age (4 months) to determine if irisin could prevent emergence of early neuropathology. One month later, mice were sacrificed to collect brain tissue and serum. Protein levels of ptau (serine 202), inflammatory cytokine tumour necrosis factor alpha (TNFα) and FNDC5 were quantified using capillary-based western blotting (Wes).Our data show that irisin treatment significantly reduced ptau and TNFα in the hippocampus and serum of female htau mice compared to vehicle-treated controls. Irisin treatment did not alter ptau levels in male htau hippocampus and appeared to enhance both neural and systemic TNFα levels.This study provides the first evidence that enhancing the endogenous hormone irisin may be therapeutic against emerging neuropathology in a tauopathy-selective AD model. This is important because there are currently no disease-modifying therapeutics available for AD, and few agents in development address the multiple disease targets irisin appears to-making irisin an intriguing therapeutic candidate for further investigation." @default.
- W3136163368 created "2021-03-29" @default.
- W3136163368 creator A5008288955 @default.
- W3136163368 creator A5039347763 @default.
- W3136163368 creator A5058885816 @default.
- W3136163368 creator A5060876856 @default.
- W3136163368 creator A5065709927 @default.
- W3136163368 creator A5076707007 @default.
- W3136163368 date "2021-05-05" @default.
- W3136163368 modified "2023-09-25" @default.
- W3136163368 title "Irisin treatment lowers levels of phosphorylated tau in the hippocampus of pre‐symptomatic female but not male htau mice" @default.
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