Do enteric neurons make hypocretin?
Open accessAbstract
Hypocretins (orexins) are wake-promoting neuropeptides produced by hypothalamic neurons. These hypocretin-producing cells are lost in people with narcolepsy, possibly due to an autoimmune attack. Prior studies described hypocretin neurons in the enteric nervous system, and these cells could be an additional target of an autoimmune process. We sought to determine whether enteric hypocretin neurons are lost in narcoleptic subjects. Even though we tried several methods (including whole mounts, sectioned tissue, pre-treatment of mice with colchicine, and the use of various primary antisera), we could not identify hypocretin-producing cells in enteric nervous tissue collected from mice or normal human subjects. These results raise doubts about whether enteric neurons produce hypocretin.
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The specificity of the hypocretin-1 antiserum was tested and confirmed in hypothalamic tissue from hypocretin-knockout mice.
“The specificity of the antiserum was tested and confirmed in hypothalamic tissue from hypocretin-knockout mice.12”
From Loss of hypocretin (orexin) neurons with traumatic brain injury (2009) · cites this paper as [12]
Cites
Peyron, C., Faraco, J., Rogers, W., Ripley, B., Overeem, S., Charnay, Y., Nevsimalova, S., Aldrich, M., Reynolds, D., Albin, R., et al. (2000) · Nature Medicine · doi:10.1038/79690 · Cited by 2,118 · see citing works
Reduced Number of Hypocretin Neurons in Human Narcolepsy
Thannickal, T. C., Moore, R. Y., Nienhuis, R., Ramanathan, L., Gulyani, S., Aldrich, M., Cornford, M., & Siegel, J. M. (2000) · Neuron · doi:10.1016/s0896-6273(00)00058-1 · Cited by 2,089 · see citing works
Date, Y., Ueta, Y., Yamashita, H., Yamaguchi, H., Matsukura, S., Kangawa, K., Sakurai, T., Yanagisawa, M., & Nakazato, M. (1999) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.96.2.748 · Cited by 1,050 · see citing works
Orexin Synthesis and Response in the Gut
Kirchgessner, A. L., & Liu, M.-T. (1999) · Neuron · doi:10.1016/s0896-6273(00)81041-7 · Cited by 320 · see citing works
Concomitant loss of dynorphin, NARP, and orexin in narcolepsy
Crocker, A., España, R. A., Papadopoulou, M., Saper, C. B., Faraco, J., Sakurai, T., Honda, M., Mignot, E., & Scammell, T. E. (2005) · Neurology · doi:10.1212/01.wnl.0000168173.71940.ab · Cited by 301 · see citing works
Self-citationOrexins/hypocretins regulate drinking behaviour1Published on the World Wide Web on 4 August 1999.1
Kunii, K., Yamanaka, A., Nambu, T., Matsuzaki, I., Goto, K., & Sakurai, T. (1999) · Brain Research · doi:10.1016/s0006-8993(99)01884-3 · Cited by 212 · see citing works
Glucose Regulates the Release of Orexin-A From the Endocrine Pancreas
Ouedraogo, R., Näslund, E. B., & Kirchgessner, A. L. (2003) · Diabetes · doi:10.2337/diabetes.52.1.111 · Cited by 121 · see citing works
Ehrström, M., Gustafsson, T. P., Finn, A., Kirchgessner, A. L., Grybäck, P., Jacobsson, H., Hellström, P. M., & Näslund, E. B. (2005) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2004-1408 · Cited by 93 · see citing works
Localization and effects of orexin on fasting motility in the rat duodenum
Näslund, E. B., Ehrström, M., Ma, J., Hellström, P. M., & Kirchgessner, A. L. (2002) · American Journal of Physiology-Gastrointestinal and Liver Physiology · doi:10.1152/ajpgi.00219.2001 · Cited by 85 · see citing works
The Frustrating and Mostly Fruitless Search for an Autoimmune Cause of Narcolepsy
Scammell, T. E. (2006) · SLEEP · doi:10.1093/sleep/29.5.601 · Cited by 52 · see citing works
Self-citationImmunocytochemical Detection of Orexin A in Endocrine Cells of the Developing Mouse Gut
de Miguel, M. J. S., & Burrell, M. A. (2002) · Journal of Histochemistry & Cytochemistry · doi:10.1177/002215540205000107 · Cited by 44 · see citing works
Pharmacokinetic profile of orexin A and effects on plasma insulin and glucagon in the rat
Ehrström, M., Näslund, E. B., Levin, F., Kaur, R., Kirchgessner, A. L., Theodorsson, E., & Hellström, P. M. (2004) · Regulatory Peptides · doi:10.1016/j.regpep.2004.02.004 · Cited by 42 · see citing works
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Scammell, T. E., & Winrow, C. J. (2011) · The Annual Review of Pharmacology and Toxicology · doi:10.1146/annurev-pharmtox-010510-100528 · Cited by 379 · see citing works
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Mahoney, C. E., Cogswell, A., Koralnik, I. J., & Scammell, T. E. (2019) · Nature Reviews Neuroscience · doi:10.1038/s41583-018-0097-x · Cited by 289 · see citing works
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Baumann, C. R., Bassetti, C. L., Valko, P. O., Haybaeck, J., Keller, M., Clark, E., Stocker, R., Tolnay, M., & Scammell, T. E. (2009) · Annals of Neurology · doi:10.1002/ana.21836 · Cited by 185 · see citing works
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Sleep disorders, obesity, and aging: The role of orexin
Nixon, J. P., Mavanji, V., Butterick, T. A., Billington, C. J., Kotz, C. M., & Teske, J. A. (2014) · Ageing Research Reviews · doi:10.1016/j.arr.2014.11.001 · Cited by 134 · see citing works
Orexin Neurons Are Necessary for the Circadian Control of REM Sleep
Kántor, S., Mochizuki, T., Janisiewicz, A. M., Clark, E. L., Nishino, S., & Scammell, T. E. (2009) · SLEEP · doi:10.1093/sleep/32.9.1127 · Cited by 111 · see citing works
Self-citationWhen do we eat? Ingestive behavior, survival, and reproductive success.
Schneider, J., Wise, J., Benton, N. A., Brozek, J., & Keen‐Rhinehart, E. (2013) · Hormones and Behavior · doi:10.1016/j.yhbeh.2013.07.005 · Cited by 107 · see citing works
Fontana, A., Gast, H., Reith, W., Recher, M., Birchler, T., & Bassetti, C. L. (2010) · Brain · doi:10.1093/brain/awq086 · Cited by 97 · see citing works
Role of orexin in the regulation of glucose homeostasis
Tsuneki, H., Wada, T., & Sasaoka, T. (2009) · Acta Physiologica · doi:10.1111/j.1748-1716.2009.02008.x · Cited by 85 · see citing works
Autonomic disturbances in narcolepsy
Plazzi, G., Moghadam, K. K., Maggi, L. S., Donadio, V. A., Vetrugno, R., Liguori, R., Zoccoli, G., Poli, F., Pizza, F., Pagotto, U., et al. (2010) · Sleep Medicine Reviews · doi:10.1016/j.smrv.2010.05.002 · Cited by 83 · see citing works
Neuropeptides Controlling Energy Balance: Orexins and Neuromedins
Nixon, J. P., Kotz, C. M., Novak, C. M., Billington, C. J., & Teske, J. A. (2011) · Handbook of experimental pharmacology · doi:10.1007/978-3-642-24716-3_4 · Cited by 56 · see citing works
REM sleep, energy balance and ‘optimal foraging’
Horne, J. (2008) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2008.12.002 · Cited by 56 · see citing works
Orexins/hypocretins and orexin receptors in apoptosis: a mini‐review
Laburthe, M., Voisin, T., & Firar, A. E. (2009) · Acta Physiologica · doi:10.1111/j.1748-1716.2009.02035.x · Cited by 42 · see citing works
An Autoantibody in Narcolepsy Disrupts Colonic Migrating Motor Complexes
Jackson, M. W., Reed, J. H., Smith, A., & Gordon, T. P. (2008) · Journal of Neuroscience · doi:10.1523/jneurosci.4489-08.2008 · Cited by 28 · see citing works
Dall’Aglio, C., Pascucci, L., Mercati, F., Giontella, A., Pedini, V., & Ceccarelli, P. (2008) · Research in Veterinary Science · doi:10.1016/j.rvsc.2008.07.001 · Cited by 20 · see citing works
Is suvorexant a better choice than alternative hypnotics?
Kripke, D. F. (2015) · F1000Research · doi:10.12688/f1000research.6845.1 · Cited by 19 · see citing works
Adeghate, E. A. (2012) · Vitamins and hormones · doi:10.1016/b978-0-12-394623-2.00007-x · Cited by 19 · see citing works
Dallâ€TMAglio, C., Pascucci, L., Mercati, F., Giontella, A., Pedini, V., Scocco, P., & Ceccarelli, P. (2009) · European Journal of Histochemistry · doi:10.4081/1221 · Cited by 16 · see citing works
Localization of the orexin system in the gastrointestinal tract of fallow deer
Dall’Aglio, C., Pascucci, L., Mercati, F., Boiti, C., & Ceccarelli, P. (2011) · Acta Histochemica · doi:10.1016/j.acthis.2011.02.006 · Cited by 14 · see citing works
Pre-treatment of blood samples reveal normal blood hypocretin/orexin signal in narcolepsy type 1
Ægidius, H. M., Kruse, L. S., Christensen, G. L., Lorentzen, M. P., Jørgensen, N. R., Moresco, M., Pizza, F., Plazzi, G., Jennum, P., & Kornum, B. R. (2021) · Brain Communications · doi:10.1093/braincomms/fcab050 · Cited by 13 · see citing works
An overview of the orexinergic system in different animal species
Azeez, I. A., Igado, O. O., & Olopade, J. O. (2021) · Metabolic Brain Disease · doi:10.1007/s11011-021-00761-0 · Cited by 13 · see citing works
Orexin system expression in the gastrointestinal tract of pigs
Dall’Aglio, C., Zannoni, A., Forni, M., Bacci, M. L., Ceccarelli, P., & Boiti, C. (2013) · Research in Veterinary Science · doi:10.1016/j.rvsc.2013.02.001 · Cited by 7 · see citing works
Wide implications of a trial on pitolisant for cataplexy
Baumann, C. R. (2017) · The Lancet Neurology · doi:10.1016/s1474-4422(16)30398-2 · Cited by 5 · see citing works
Self-citationStránský, D., Barabas, M., Šíma, M., & Slanař, O. (2026) · Frontiers in Pharmacology · doi:10.3389/fphar.2026.1831913 · Cited by 1 · see citing works
Narcolepsy: Autoimmunity or Secondary to Infection?
Fontana, A., Gast, H., & Birchler, T. (2011) · Springer eBooks · doi:10.1007/978-1-4419-8390-9_2 · Cited by 1 · see citing works
- Authors
- Baumann, C. R., Clark, E. L., Pedersen, N. P., Hecht, J. L., & Scammell, T. E.
- Affiliations
- Beth Israel Deaconess Medical Center (US)
- The University of Sydney (AU)
- Corresponding author
- Baumann, Christian R.
- Venue
- Regulatory Peptides
- Publisher
- Elsevier BV
- Published
- 2008-04
- Volume
- 147
- Issue
- 1-3
- Pages
- 1-3
- ISSN
- 0167-0115 (ISSN-L)
- PMC
- PMC2276606
- OpenAlex
- W2053667928
- Cited by
- 26
- References
- 12
- Citations by year
- 2026: 1 · 2021: 2 · 2018: 1 · 2017: 1 · 2015: 1 · 2014: 1 · 2013: 3 · 2012: 1
- FWCI
- 2.58
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Regulatory Peptides (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health
- National Heart, Lung, and Blood Institute (HL 60292, P50HL060292)
- National Institute of Neurological Disorders and Stroke (R01NS055367, NS-055367)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Neuroscience of respiration and sleep
- Keywords
- orexin, enteric nervous system, enteric neurons, narcolepsy, hypothalamic neurons, autoimmune attack, colchicine
- MeSH terms
- Orexins, Animals, Humans, Immunohistochemistry, Male, Neurons, Neuropeptides, Enteric Nervous System, Mice, Knockout, Neurotransmitter Agents, Intracellular Signaling Peptides and Proteins, Mice
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