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• W2954415516 abstract "A limited number of studies suggest that poor diet choices may impact on the mental state of schizophrenia patients. Our own work found that high fat diet (HFD) reversed social recognition memory deficits in female mice mutant for the schizophrenia risk gene neuregulin 1 (i.e. Nrg1 transmembrane domain: Nrg1 TM HET). Sex effects are common in schizophrenia and adolescence is a period of increased sensitivity to environmental risk factors. Thus, we investigated whether adolescent HFD exposure modulates schizophrenia-relevant behaviours of male and female Nrg1 TM HET mice. Male and female Nrg1 TM HET and their control littermates were exposed to either HFD or a standard chow diet from late adolescence onwards. After 8 weeks, adult mice were tested for locomotion and exploration, social behaviours, sensorimotor gating (i.e. prepulse inhibition), and fear-associated learning and memory. Nrg1 TM HET mice exhibited hyper-locomotion and an anxiolytic-like phenotype across sex and Nrg1 males tended to show deficient fear-associated memory. HFD increased body weight over time in all mice, an effect less pronounced in Nrg1 female mice. The moderately suppressive effect of HFD on females' exploration was less evident in Nrg1 mutants. Nrg1 TM HET female mice also displayed a less pronounced increase in HFD-induced cue freezing and HFD modulated the response to the cue in a complex genotype-dependent manner. In conclusion, HFD exposure starting in late adolescence has sex-specific effects on exploration and fear-associated memory, which was less pronounced in females mutant for Nrg1. This suggests that research into the role of diets in schizophrenia-relevant domains should consider genetic risk factors for the disease as schizophrenia risk genes such as Nrg1 may modulate dietary effects." @default.
• W2954415516 created "2019-07-12" @default.
• W2954415516 creator A5010038241 @default.
• W2954415516 creator A5030791967 @default.
• W2954415516 creator A5079586758 @default.
• W2954415516 date "2019-11-01" @default.
• W2954415516 modified "2023-09-23" @default.
• W2954415516 title "Behavioural effects of high fat diet exposure starting in late adolescence in neuregulin 1 transmembrane domain mutant mice" @default.
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• W2954415516 doi "https://doi.org/10.1016/j.bbr.2019.112074" @default.
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