VIPR1 explained

Vasoactive intestinal polypeptide receptor 1 also known as VPAC1, is a protein, that in humans is encoded by the VIPR1 gene. VPAC1 is expressed in the brain (cerebral cortex, hippocampus, amygdala), lung, prostate, peripheral blood leukocytes, liver, small intestine, heart, spleen, placenta, kidney, thymus and testis.[1] [2] [3]

Function

VPAC1 is a receptor for vasoactive intestinal peptide (VIP), a small neuropeptide. Vasoactive intestinal peptide is involved in smooth muscle relaxation, exocrine and endocrine secretion, and water and ion flux in lung and intestinal epithelia. Its actions are effected through integral membrane receptors associated with a guanine nucleotide binding protein which activates adenylate cyclase.[4]

VIP acts in an autocrine fashion via VPAC11 to inhibit megakaryocyte proliferation and induce proplatelet formation.[5] [6]

Clinical significance

Patients with idiopathic achalasia show a significant difference in the distribution of SNPs affecting VIPR1.[7]

VIP and PACAP levels were decreased in anterior vaginal wall of stress urinary incontinence and pelvic organ prolapse patients, they may participate in the pathophysiology of these diseases.[8]

See also

Further reading

Notes and References

  1. Ishihara T, Shigemoto R, Mori K, Takahashi K, Nagata S . Functional expression and tissue distribution of a novel receptor for vasoactive intestinal polypeptide . Neuron . 8 . 4 . 811–9 . Apr 1992 . 1314625 . 10.1016/0896-6273(92)90101-I . 43589458 .
  2. Usdin TB, Bonner TI, Mezey E . Two receptors for vasoactive intestinal polypeptide with similar specificity and complementary distributions . Endocrinology . 135 . 6 . 2662–80 . Dec 1994 . 7988457 . 10.1210/endo.135.6.7988457 .
  3. Sreedharan SP, Huang JX, Cheung MC, Goetzl EJ . Structure, expression, and chromosomal localization of the type I human vasoactive intestinal peptide receptor gene . Proceedings of the National Academy of Sciences of the United States of America . 92 . 7 . 2939–43 . Mar 1995 . 7708752 . 42334 . 10.1073/pnas.92.7.2939 . 1995PNAS...92.2939S . free .
  4. Web site: Entrez Gene: VIPR1 vasoactive intestinal peptide receptor 1.
  5. Nam C, Case AJ, Hostager BS, O'Dorisio MS . The role of vasoactive intestinal peptide (VIP) in megakaryocyte proliferation . Journal of Molecular Neuroscience . 37 . 2 . 160–7 . Feb 2009 . 18663606 . 10.1007/s12031-008-9119-x . 2030939 .
  6. Freson K, Peeters K, De Vos R, Wittevrongel C, Thys C, Hoylaerts MF, Vermylen J, Van Geet C . PACAP and its receptor VPAC1 regulate megakaryocyte maturation: therapeutic implications . Blood . 111 . 4 . 1885–93 . Feb 2008 . 18000164 . 10.1182/blood-2007-06-098558 . 24342247 .
  7. Paladini F, Cocco E, Cascino I, Belfiore F, Badiali D, Piretta L, Alghisi F, Anzini F, Fiorillo MT, Corazziari E, Sorrentino R . Age-dependent association of idiopathic achalasia with vasoactive intestinal peptide receptor 1 gene . Neurogastroenterology and Motility . 21 . 6 . 597–602 . Jun 2009 . 19309439 . 10.1111/j.1365-2982.2009.01284.x . 24081228 .
  8. Hong X, Huang L, Song Y . Role of vasoactive intestinal peptide and pituitary adenylate cyclase activating polypeptide in the vaginal wall of women with stress urinary incontinence and pelvic organ prolapse . International Urogynecology Journal and Pelvic Floor Dysfunction . 19 . 8 . 1151–7 . Aug 2008 . 18351280 . 10.1007/s00192-008-0585-z . 2482642 .