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To eat or to sleep? Orexin in the regulation of feeding and wakefulness.
TLDR
These findings suggest that the orexin neuropeptide system plays a significant role in feeding and sleep-wakefulness regulation, possibly by coordinating the complex behavioral and physiologic responses of these complementary homeostatic functions.
Involvement of the Lateral Hypothalamic Peptide Orexin in Morphine Dependence and Withdrawal
TLDR
A role for the orexin system in molecular adaptations to morphine is supported, and dramatic differences in molecular responses among different populations of LH neurons are demonstrated.
Orexin (Hypocretin) Neurons Contain Dynorphin
TLDR
Findings suggest that dynorphin-A may play an important role in the function of the orexin neurons, which are common in the lateral hypothalamic area of mice and shown to influence feeding.
Orexin peptides prevent cataplexy and improve wakefulness in an orexin neuron-ablated model of narcolepsy in mice.
TLDR
Results indicate that orexin neuron-ablated mice retain the ability to respond to orexIn neuropeptides and that a temporally regulated and spatially targeted secretion of orexins is not necessary to prevent narcoleptic symptoms.
A consensus definition of cataplexy in mouse models of narcolepsy.
TLDR
This working definition of murine cataplexy is an abrupt episode of nuchal atonia lasting at least 10 seconds that is common in mice with disrupted orexin/hypocretin signaling, but these events almost never occur in wild type mice.
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