vasoactive intestinal peptide secreted by peptides secreted by certain tumors - Vasoactive intestinal peptidefunction vasoactive intestinal polypeptide (VIP Unraveling the Source: Where Vasoactive Intestinal Peptide is Secreted

Vasoactive intestinal peptidenasal spray Vasoactive intestinal peptide (VIP), a crucial neuropeptide, plays a multifaceted role in various physiological processes. Understanding where and by which cells vasoactive intestinal polypeptide (VIP) is secreted is key to appreciating its widespread influence.VIP - Overview: Vasoactive Intestinal Polypeptide, Plasma Scientific research has pinpointed numerous sources for this versatile peptide, highlighting its presence in many tissues of vertebrates, underscoring its systemic importance.作者：M Bodanszky·1974·被引用次数：89—Vasoactive intestinal peptideinhibition of stimulated gastricsecretion. The American Journal of Surgery 1980, 139 (6) , 817-823. https://doi.org/10.1016 ...

Initially isolated from porcine small intestine by Said and Mutt, VIP's origin story is rich and varied. It is now understood that VIP is synthesized and secreted by the hypothalamus and anterior pituitary, where it participates in the regulation of hormonal release and circadian rhythms. Specifically, VIP is also produced in the suprachiasmatic nuclei (SCN) of the hypothalamus, with its production occurring in neurons in the ventral part of the SCN and released in a circadian patternVasoactive intestinal polypeptide.

Beyond the central nervous system, VIP's reach extends significantly into the peripheral systems.VIP derived from pigs, cows, and rats have the same structure. Furthermore, VIP released from endocrine cells in the central nerve, peripheral nerve, digestive ... Vasoactive intestinal polypeptide (VIP) is notably secreted by cells throughout the intestinal tract, where it plays a vital role in regulating gastrointestinal functions.Vasoactive intestinal polypeptide is a potent regulator of bile ... This includes stimulating the secretion of electrolytes and water by the intestinal lining, influencing smooth muscle relaxation, and modulating pancreatic juice and bile secretion. Furthermore, it has been observed to inhibit gastric acid secretionVasoactive intestinal polypeptide in cholinergic neurons of ....

The complexity of VIP's origins is further amplified by its production by both neurons and immune cells. This dual role positions VIP as a critical signaling molecule in both the nervous and immune systems. Specifically, immune cells including T cells, B cells, mast cells, and eosinophils have been identified as sources of VIP, often stimulated by factors like lipopolysaccharide (LPS).Vasoactive Intestinal Polypeptide - an overview This production by immune cells suggests a significant role for VIP in mediating inflammatory and immune responses.

The list of tissues and cell types contributing to VIP levels continues to expand. Vasoactive intestinal peptide is produced in neurons within the adrenals, brain, gastrointestinal tract, heart, pituitary, and pancreas. Its presence in the pancreas is particularly noteworthy, as Vasoactive Intestinal Polypeptide (VIP) has been shown to increase the release of insulin, glucagon, and somatostatin from the perfused rat pancreas.

In essence, the vasoactive intestinal polypeptide (VIP) is a widely distributed peptide hormone and neurotransmitter. Its secretion into the circulatory system allows it to act on distant target organs. Beyond the aforementioned sources, VIP has also been implicated in the function of the pituitary gland, influencing the release of hormones such as prolactinVasoactive intestinal peptide. Research has even explored the detection of vasoactive intestinal polypeptide-producing tumors, particularly some pancreatic islet-cell tumors, which can lead to conditions like chronic diarrheal diseasesVasoactive Intestinal Peptide - an overview. The intricate network of cells and tissues involved in VIP production underscores its profound and diverse physiological impacts.