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Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
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Related Experiment Video

Updated: Dec 16, 2025

Increased Recovery Time and Decreased LPS Administration to Study the Vagus Nerve Stimulation Mechanisms in Limited Inflammatory Responses
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Parameters matter: modulating cytokines using nerve stimulation.

Bruno Bonaz1

  • 1University Grenoble Alpes, Inserm, U1216, Grenoble Institute Neurosciences and Division of Hepato-Gastroenterology, CHU Grenoble Alpes, 38000 Grenoble, France.

Bioelectronic Medicine
|July 2, 2020
PubMed
Summary
This summary is machine-generated.

Researchers explored vagus nerve stimulation parameters to control inflammation. Specific electrical settings altered tumor necrosis factor (TNF) levels in mice, offering insights for treating inflammatory diseases.

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Area of Science:

  • Bioelectronic Medicine
  • Neuroscience
  • Immunology

Background:

  • The vagus nerve's inflammatory reflex modulates cytokine release.
  • Bioelectronic devices show promise for treating inflammatory conditions like rheumatoid arthritis and inflammatory bowel disease by targeting this reflex.
  • Optimal vagus nerve stimulation parameters for treating inflammation remain undetermined.

Purpose of the Study:

  • To investigate the impact of varying vagus nerve electrical stimulation parameters on circulating cytokine levels in healthy mice.
  • To identify specific stimulation parameters that can modulate inflammatory responses.

Main Methods:

  • Healthy mice were subjected to different electrical vagus nerve stimulation parameter settings.
  • Serum cytokine levels, specifically TNF, were measured and compared to sham-stimulated control groups.

Main Results:

  • Specific combinations of vagus nerve stimulation parameters significantly increased serum TNF levels.
  • Other tested parameters selectively decreased serum TNF levels compared to sham stimulation.
  • These findings demonstrate that stimulation parameters can differentially modulate cytokine levels.

Conclusions:

  • Vagus nerve stimulation parameter optimization is crucial for effectively treating inflammatory diseases.
  • Tailoring stimulation parameters could lead to more targeted and efficacious bioelectronic therapies for immune-regulated conditions.
  • This research provides a foundation for developing precise neuromodulation strategies for inflammatory disorders.