Journal
ADIPOCYTE
Volume 1, Issue 2, Pages 116-120Publisher
TAYLOR & FRANCIS INC
DOI: 10.4161/adip.19736
Keywords
endocannabinoid; narcolepsy; obesity; stress; ultradian rhythm
Categories
Funding
- NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES [R56DK082558] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE [R01NS040987] Funding Source: NIH RePORTER
- NIDDK NIH HHS [R56 DK082558] Funding Source: Medline
- NINDS NIH HHS [R01 NS040987] Funding Source: Medline
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Non-shivering thermogenesis in brown adipose tissue (BAT) plays an important role in thermoregulatory cold-defense and, through its metabolic consumption of energy reserves to produce heat, can affect the long-term regulation of adiposity. An orexinergic pathway from the perifornical lateral hypothalamus (PeF/LH) to the rostral raphe pallidus (rRPa) has been demonstrated to increase the gain of the excitatory drives to medullary sympathetic premotor neurons controlling BAT sympathetic outflow and BAT thermogenesis. With this background, we consider neural mechanisms that could underlie orexin's modulation of the excitability of BAT sympathetic premotor neurons in rRPa and the potential role of altered BAT thermogenesis in pathological conditions associated with the absence of the central orexin system. Overall, these new data enhance our understanding of the role of central orexin in regulating body temperature and energy homeostasis and provide further insight into the neurochemical regulation of BAT thermogenesis and metabolism.
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