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Orexin and MCH neurons: regulators of sleep and metabolism

Authors
  • Bouâouda, Hanan1
  • Jha, Pawan Kumar2
  • 1 Pharmacology Institute, Medical Faculty Heidelberg, Heidelberg University, Heidelberg , (Germany)
  • 2 Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA , (United States)
Type
Published Article
Journal
Frontiers in Neuroscience
Publisher
Frontiers Media SA
Publication Date
Aug 22, 2023
Volume
17
Identifiers
DOI: 10.3389/fnins.2023.1230428
Source
Frontiers
Keywords
Disciplines
  • Neuroscience
  • Review
License
Green

Abstract

Sleep-wake and fasting-feeding are tightly coupled behavioral states that require coordination between several brain regions. The mammalian lateral hypothalamus (LH) is a functionally and anatomically complex brain region harboring heterogeneous cell populations that regulate sleep, feeding, and energy metabolism. Significant attempts were made to understand the cellular and circuit bases of LH actions. Rapid advancements in genetic and electrophysiological manipulation help to understand the role of discrete LH cell populations. The opposing action of LH orexin/hypocretin and melanin-concentrating hormone (MCH) neurons on metabolic sensing and sleep-wake regulation make them the candidate to explore in detail. This review surveys the molecular, genetic, and neuronal components of orexin and MCH signaling in the regulation of sleep and metabolism.

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