Difference in obesity phenotype between orexin-knockout mice and orexin neuron-deficient mice with same genetic background and environmental conditions.

Abstract excerpt

Orexins are a pair of neuropeptides expressed by a population of neurons located in the lateral hypothalamic area (LHA). Prepro-orexin- or orexin receptor type 2-deficient animals exhibit a phenotype remarkably similar to the human sleep disorder, narcolepsy, which is characterized by sleep/wakefulness fragmentation. Human narcolepsy is known to be associated with metabolic abnormalities, including an increased...

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