Cited by 143Vagus Nerve Stimulation ResearchGastrointestinal motility and disordersNeuropeptides and Animal Physiology

Evidences for vagus nerve in maintenance of immune balance and transmission of immune information from gut to brain in STM-infected rats

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Wang, Xi·2002·World Journal of Gastroenterology

Abstract

AIM: To determine whether Salmonella Typhimurium (STM)in gastrointestinal tract can induce the functional activation of brain, whether the vagus nerve involves in signaling immune information from gastrointestinal tract to brain and how it influences the immune function under natural infection condition. METHODS: Animal model of gastrointestinal tract infection in the rat was established by an intubation of Salmonella Typhimurium (STM) into stomach to mimic the condition of natural bacteria infection. Subdiagphragmatic vagotomy was performed in some of the animals 28 days before infection. The changes of Fos expression visualized with immunohistochemistry technique in hypothalamic paraventricular nucleus (PVN) and superaoptic nucleus (SON) were counted. Meanwhile, the percentage and the Mean Intensities of Fluorescent (MIFs) of CD4+ and CD8+ T cells in peripheral blood were measured by using flow cytometry (FCM), and the pathological changes in ileum and mesenteric lymph node were observed in HE stained sections. RESULTS: In bacteria-stimulated groups, inflammatory pathological changes were seen in ileum and mesenteric lymph node. The percentages of CD4+ T cells in peripheral blood were decreased from 42%+/-4.5% to 34%+/-4.9% (P<0.05) and MIFs of CD8+ T cells were also decreased from 2.9+/-0.39 to 2.1+/-0.36 (P<0.05) with STM stimulation. All of them proved that our STM-infection model was reliable. Fos immunoreactive (Fos-ir) cells in PVN and SON increased significantly with STM stimulation, from 189+/-41 to 467+/-62 (P<0.05) and from 64+/-21 to 282+/-47 (P<0.05) individually, which suggested that STM in gastrointestinal tract induced the functional activation of brain. Subdiagphragmatic vagotomy attenuated Fos expression in PVN and SON induced by STM, from 467+/-62 to 226+/-45 (P<0.05) and from 282+/-47 to 71+/-19 (P<0.05) individually, and restored the decreased percentages of CD4+ T cells induced by STM from 34%+/-4.9% to original level 44%+/-6.0% (P<0.05). In addition, subdiagphragmatic vagotomy itself also decreased the percentages of CD8+ T cells (from 28%+/-3.0% to 21%+/-5.9%, P<0.05) and MIFs of CD4+ (from 6.6+/-0.6 to 4.9+/-1.0, P<0.05) and CD8+ T cells (from 2.9+/-0.39 to 1.4+/-0.34, P<0.05). Both of them manifested the important role of vagus nerve in transmitting immune information from gut to brain and maintaining the immune balance of the organism. CONCLUSION: Vagus nerve does involve in transmitting abdominal immune information into the brain in STM infection condition and play an important role in maintenance of the immune balance of the organism.

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  • Gut bacteria can interact with and activate the vagus nerve, thereby exerting effects upstream to the central nervous system.

    “gut bacteria can interact with and activate the vagus nerve, thereby exerting effects upstream to the CNS.”

    From The Role of Short-Chain Fatty Acids From Gut Microbiota in Gut-Brain Communication (2020) · cites this paper as [32]

    The Results (FCM section; page not provided) show that stomach-administered Salmonella Typhimurium increased neuronal activation in rat hypothalamic nuclei and that vagotomy attenuated it. The Discussion interprets this as evidence that the vagus transmits infection-related immune signals to the brain, but the paper does not demonstrate that bacteria directly interact with or activate the vagus nerve; it says how the nerve senses immune stimulation remains unclear. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Neuronal activity in the PVN induced by bacterial colonization is blocked by subdiaphragmatic vagotomy.

    “and that neuronal activity in the PVN induced by bacterial colonization is blocked by subdiaphragmatic vagotomy (Wang et al., 2002).”

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Cites

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1 of the 50 references couldn’t be matched to a known paper.

Research works printed but not linked: 9

  1. Wang X, Wang BR, Ju G. The role of the vagus nerve in transmitting immune information into the brain. Shanghai Mianyixue Zazhi 2000; 20:192-194
  2. Xu ZC, Jiang XH. Advance and development of Early response genes in neuroscience research. Shengli Kexue Jinzhan 1997; 28: 49-51
  3. Wang X, Wang BR, Duan XL, Ju G. The basal expression of Fos in the rat under the normal life situation. Zhongguo Shenjing Jiepouxue Zazhi 2000; 16: 353-358
  4. Zhang X, Ju G. The induction and display of c-fos oncogene. Shengli Kexue Jinzhan 1991; 22: 299-303
  5. Watkins LR, Goehler LE, Reiton J, Brewer MT, Maier SF. Mecha- nisms of tumor necrosis factor-α (TNF-α) hyperagesia. Brain Res 1995; 692: 244-250
  6. Dou DB, Cai G. Regulation of the stomach motility function. Shijie Huaren Xiaohua Zazhi 1999; 7: 353-354
  7. Xia B. Pathogeny and mechanism of inflammatory bowel disease. Shijie Huaren Xiaohua Zazhi 2001; 9: 245-250
  8. Wang X, Wang BR, Duan XL, Liu HL, Ju G. The expression of IL- 1receptor type I in nodose ganglion and vagal paraganglion in the rat. Zhongguo Shenjing Kexue Zazhi 2000; 16: 90-93 52
  9. Wang X, Cao YX, Wang BR, Xu Z, Jin L, Duan XL, Ju G. The influence of subdiaphragmatic vagotomy on CD4+/CD8+ T cells in peripheral blood. Xibao Fenzi Yu Mianyixue Zazhi 2000;16: 230-231

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Authors
Wang, X.
Affiliations
Air Force Medical University (CN)
Corresponding author
Wang, Xi
Venue
World Journal of Gastroenterology
Published
2002
Volume
8
Issue
3
Pages
540
ISSN
1007-9327 (ISSN-L)
OpenAlex
W155664710
Cited by
143
References
50
Citations by year
2026: 3 · 2025: 6 · 2024: 10 · 2023: 6 · 2022: 6 · 2021: 18 · 2020: 14 · 2019: 9 · 2018: 9 · 2017: 9 · 2016: 9 · 2015: 11 · 2014: 6 · 2013: 3 · 2012: 4
FWCI
1.93
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • World Journal of Gastroenterology (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Neurology › Vagus Nerve Stimulation Research
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
vagus nerve, gut-brain axis, Salmonella typhimurium, gastrointestinal infections, vagotomy, Fos expression, paraventricular nucleus, supraoptic nucleus, CD4+ T cells, CD8+ T cells, immune homeostasis, intestinal inflammation, mesenteric lymph nodes, rats
MeSH terms
Animals, Gastrointestinal Diseases, Male, Salmonella Infections, Animal, Salmonella typhimurium, Vagus Nerve, Neuroimmunomodulation, Rats, Sprague-Dawley, Rats

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