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• W4306352936 abstract "High-fat diet (HFD)-induced obesity is a growing epidemic and major health concern. While excessive daytime sleepiness (EDS) is a common symptom of HFD-induced obesity, preliminary findings suggest that reduced wakefulness could be improved with time-restricted feeding (TRF). At present, however, the underlying neural mechanisms remain largely unknown. The paraventricular thalamic nucleus (PVT) plays a role in maintaining wakefulness. We found that chronic HFD impaired the activity of PVT neurons. Notably, inactivation of the PVT was sufficient to reduce and fragment wakefulness during the active phase in lean mice, similar to the sleep-wake alterations observed in obese mice with HFD-induced obesity. On the other hand, enhancing PVT neuronal activity consolidated wakefulness in mice with HFD-induced obesity. We observed that the fragmented wakefulness could be eliminated and reversed by TRF. Furthermore, TRF prevented the HFD-induced disruptions on synaptic transmission in the PVT, in a feeding duration-dependent manner. Collectively, our findings demonstrate that ad libitum access to a HFD results in inactivation of the PVT, which is critical to impaired nocturnal wakefulness and increased sleep, while TRF can prevent and reverse diet-induced PVT dysfunction and excessive sleepiness. We establish a link between TRF and neural activity, through which TRF can potentially serve as a lifestyle intervention against diet/obesity-related EDS." @default.
• W4306352936 created "2022-10-16" @default.
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• W4306352936 date "2022-10-16" @default.
• W4306352936 modified "2023-09-26" @default.
• W4306352936 title "Time-restricted feeding is an intervention against excessive dark-phase sleepiness induced by obesogenic diet" @default.
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• W4306352936 doi "https://doi.org/10.1093/nsr/nwac222" @default.
• W4306352936 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36825118" @default.
• W4306352936 hasPublicationYear "2022" @default.
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