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Splenectomy inactivates the cholinergic antiinflammatory pathway during lethal endotoxemia and polymicrobial sepsis

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Huston, Jared M., Ochani, Mahendar, Rosas-Ballina, Mauricio, Liao, Hong, Ochani, Kanta, Pavlov, Valentin A., Gallowitsch-Puerta, Margot, Ashok, Mala +4 more·2006·The Journal of Experimental Medicine

Abstract

The innate immune system protects against infection and tissue injury through the specialized organs of the reticuloendothelial system, including the lungs, liver, and spleen. The central nervous system regulates innate immune responses via the vagus nerve, a mechanism termed the cholinergic antiinflammatory pathway. Vagus nerve stimulation inhibits proinflammatory cytokine production by signaling through the α7 nicotinic acetylcholine receptor subunit. Previously, the functional relationship between the cholinergic antiinflammatory pathway and the reticuloendothelial system was unknown. Here we show that vagus nerve stimulation fails to inhibit tumor necrosis factor (TNF) production in splenectomized animals during lethal endotoxemia. Selective lesioning of the common celiac nerve abolishes TNF suppression by vagus nerve stimulation, suggesting that the cholinergic pathway is functionally hard wired to the spleen via this branch of the vagus nerve. Administration of nicotine, an α7 agonist that mimics vagus nerve stimulation, increases proinflammatory cytokine production and lethality from polymicrobial sepsis in splenectomized mice, indicating that the spleen is critical to the protective response of the cholinergic pathway. These results reveal a specific, physiological connection between the nervous and innate immune systems that may be exploited through either electrical vagus nerve stimulation or administration of α7 agonists to inhibit proinflammatory cytokine production during infection and tissue injury.

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Crossref · 10.1084/jem.20052362

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  • Splenectomy significantly reduces TNF levels in liver and blood, and vagus nerve stimulation fails to reduce levels further.

    “Splenectomy significantly reduces TNF levels in liver and blood, and vagus nerve stimulation fails to reduce levels further (28).”
  • The principal components for cytokine suppression by the vagus nerve converge in the spleen.

    “Recent studies of the physiology, functional anatomy, and cellular molecular mechanisms of the cholinergic antiinflammatory pathway indicate that the principal components for cytokine suppression by the vagus nerve converge in the spleen (28).”
  • The spleen is the major source of both hepatic and systemic TNF during endotoxemia; it releases newly synthesized TNF into the splenic vein, which drains into the liver, and from there TNF crosses into the systemic circulation.

    “The spleen is the major source of both hepatic and systemic TNF during endotoxemia; it releases newly synthesized TNF into the splenic vein, which drains into the liver, and from there, TNF crosses into the systemic circulation (28).”
  • Vagus nerve stimulation in wild-type mice inhibits TNF synthesis in spleen, liver, and blood but not in α7 nAChR subunit-knockout animals.

    “Vagus nerve stimulation in WT mice inhibits TNF synthesis in spleen, liver, and blood but not in α7 nAChR subunit-knockout animals (28).”
  • Common celiac branch vagotomy abrogates the TNF-suppressing effects of vagus nerve stimulation in spleen and serum.

    “The functional anatomic mechanism of vagus nerve-derived signals to spleen traverses the common celiac branch of the vagus nerve because common celiac branch vagotomy abrogates the TNF-suppressing effects of vagus nerve stimulation in spleen and serum.”

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Authors
Huston, J. M., Ochani, M., Rosas-Ballina, M., Liao, H., Ochani, K., Pavlov, V. A., Gallowitsch-Puerta, M., Ashok, M., Czura, C. J., Foxwell, B., Tracey, K. J., & Ulloa, L.
Affiliations
  • 1Laboratory of Biomedical Science
  • Imperial College London (GB)
  • Northwell Health (US)
Venue
The Journal of Experimental Medicine
Published
2006-06-19
Volume
203
Issue
7
Pages
1623-1628
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2154170498
Cited by
683
References
30
Citations by year
2026: 25 · 2025: 22 · 2024: 37 · 2023: 32 · 2022: 50 · 2021: 51 · 2020: 37 · 2019: 44 · 2018: 33 · 2017: 40 · 2016: 29 · 2015: 31 · 2014: 36 · 2013: 25 · 2012: 39
FWCI
18.41
Type
journal article
Language
en
Open access
Locations
  • The Journal of Experimental Medicine (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
  • Defense Advanced Research Projects Agency
  • Advanced Research Projects Agency
  • National Institute of General Medical Sciences (R01GM057226)
  • National Center for Research Resources (M01RR018535)
Topics
  • Life Sciences › Neuroscience › Neurology › Vagus Nerve Stimulation Research
  • Health Sciences › Medicine › Psychiatry and Mental health › Cancer, Stress, Anesthesia, and Immune Response
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
Keywords
splenectomy, cholinergic anti-inflammatory pathway, vagus nerve stimulation, alpha7 nicotinic acetylcholine receptor, endotoxemia, polymicrobial sepsis, TNF-α, reticuloendothelial system, spleen, nicotine, inflammatory cytokines, neuroimmune regulation
MeSH terms
Acetylcholine, Animals, Female, Male, Mice, Inbred BALB C, Mice, Inbred C57BL, Rats, Inbred Lew, Splenectomy, Signal Transduction, Mice, Knockout, Sepsis, Endotoxemia, Mice, Rats

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