VIP
Vasoactive Intestinal Peptide (VIP), a naturally occurring neuropeptide hormone in the human body. VIP is a 28–amino acid peptide that functions as both a neurotransmitter, and a hormone and is widely distributed in the central and peripheral nervous systems, the gut, lungs and the immune system.
VIP has been studied or researched for potential roles in:
- Inflammatory and autoimmune conditions
- Pulmonary diseases (e.g., ARDS, pulmonary hypertension)
- Neurodegenerative disorders
- Gut disorders
- Sepsis and immune dysregulation
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Description
Vasoactive Intestinal Peptide (VIP) is an endogenous 28–amino-acid neuropeptide widely distributed throughout the gastrointestinal tract, pancreas, lungs, cardiovascular system, and central nervous system. In research settings, VIP is recognized for its broad regulatory functions, including smooth-muscle relaxation, modulation of inflammatory signaling pathways, vasodilation, bronchodilation, and neuroprotection.
At the molecular level, VIP exerts its biological activity primarily through VPAC1 and VPAC2 receptors, which are highly expressed in pulmonary tissue as well as in various immune and neuronal cell populations. Engagement of these receptors influences cyclic AMP pathways, cytokine expression, vascular tone, and neuronal survival, making VIP a molecule of interest across multiple experimental domains.
VIP has been widely investigated in preclinical and translational research for its potential roles in:
- Pulmonary biology, including models of bronchoconstriction, pulmonary hypertension, and inflammatory lung conditions
- Immune modulation, with observed effects on cytokine regulation and immune cell signaling
- Gastrointestinal and inflammatory bowel research, due to its impact on motility, mucosal immunity, and epithelial integrity
- Neurological studies, particularly involving neuroinflammation, neuroprotection, and central nervous system homeostasis
