VIP gastrointestinal research examines the intestinal motility, secretion, and immune effects of vasoactive intestinal peptide signaling in the gut. The VIP research cluster documents the vascular, neuroinflammatory, circadian, pulmonary, cardiovascular, and immune biology of VIP. This article extends the analysis into the gastrointestinal compartment where VIP was originally discovered and where its functional roles remain particularly prominent.
VIP Gastrointestinal Research: Gut Motility and IBD Models
VIP · Published April 24, 2026 · Updated May 18, 2026 · 8 min read
Quick Answer
VIP gastrointestinal research examines gut motility, IBD models, and enteric nervous system biology in rodent gastrointestinal research. Studies measure intestinal smooth muscle activity, mucosal repair, inflammatory biomarkers, and VPAC receptor signaling across standardized GI research protocols. For research use only, not for human consumption.
Research Use Only. All products are strictly for research use only (RUO). Not for human consumption. Products on this site are not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the FDA. By purchasing, you agree that you are a qualified researcher and that products will be used solely for in-vitro research purposes.
- VIP Origins and GI Biology
- Gut Motility Regulation
- IBD Model Research
- Intestinal Secretion
- Enteric Nervous System Research
- Gut-Brain Axis
- Microbiome Interactions
- Intestinal Permeability and Barrier Function
- Research Design for GI Studies
- Research Peptide Referenced
- Related Research Reading
- Related Research Articles
- Explore Related Products
- Frequently Asked Questions
- Glossary
Frequently Asked Questions
What is VIP in research contexts?
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VIP (vasoactive intestinal peptide) is an endogenous 28-amino-acid neuropeptide of the secretin/glucagon superfamily. It is studied in preclinical models for vasodilation, immune modulation, circadian rhythm regulation, and pulmonary smooth muscle research through VPAC1 and VPAC2 receptor signaling.
How does VIP affect gastrointestinal motility?
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VIP is a major non-adrenergic non-cholinergic neurotransmitter in the enteric nervous system, mediating smooth muscle relaxation and contributing to peristalsis coordination. VPAC1 receptors on intestinal smooth muscle and immune cells underlie these GI effects.
What IBD endpoints are measured with VIP?
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Endpoints include colitis severity scoring, mucosal histology, inflammatory cytokine profiles, T cell populations and function, microbiome composition, and integrated assessment in DSS, TNBS, and other induced colitis models with VIP intervention.
Is VIP approved for human use?
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No. VIP is not approved by the FDA for any human therapeutic use. It is supplied strictly for in-vitro and preclinical research purposes by qualified investigators.
Glossary
Key terms used in this article.
- VPAC1
- Vasoactive intestinal peptide receptor 1, broadly distributed, mediating immune and gastrointestinal effects of VIP.
- VPAC2
- Vasoactive intestinal peptide receptor 2, enriched in the suprachiasmatic nucleus and lung, involved in circadian and pulmonary signaling.
- Suprachiasmatic Nucleus (SCN)
- The hypothalamic master circadian pacemaker, where VPAC2 signaling is essential for synchronizing rhythmic neuronal activity.
- Vasodilation
- Widening of blood vessels resulting from relaxation of vascular smooth muscle, often mediated by nitric oxide or VIP signaling.
- Neuropeptide
- A peptide produced and released by neurons that acts as a signaling molecule in the nervous system.
- Enteric Nervous System
- The intrinsic nervous system of the gastrointestinal tract, comprising approximately 100 million neurons regulating gut function.
- DSS Colitis
- A standard rodent colitis model induced by dextran sulfate sodium administration in drinking water.
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Research Use Only. All products are strictly for research use only (RUO). Not for human consumption. Products on this site are not intended to diagnose, treat, cure, or prevent any disease. These statements have not been evaluated by the FDA. By purchasing, you agree that you are a qualified researcher and that products will be used solely for in-vitro research purposes.
