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Immediate prostaglandin E2 synthesis in rat 3Y1 fibroblasts following vasopressin V1a receptor stimulation.

Authors: Nakatani, Y  Chin, Y  Hara, S  Kudo, I 
Citation: Nakatani Y, etal., Biochem Biophys Res Commun. 2007 Mar 16;354(3):676-80. Epub 2007 Jan 17.
Pubmed: (View Article at PubMed) PMID:17254553
DOI: Full-text: DOI:10.1016/j.bbrc.2007.01.041

Arginine vasopressin (AVP) induces immediate prostaglandin E(2) (PGE(2)) production in rat 3Y1 fibroblasts. Judging from effects of several inhibitors, cytosolic phospholipase A(2)alpha (cPLA(2)alpha) and cyclooxygenase-1 (COX-1) were mainly involved in this reaction. The antagonist of vasopressin receptor V1a, and not that of V2, inhibited the AVP-induced PGE(2) synthesis, indicating that AVP activates cPLA(2)alpha through V1a receptor. Treatment of 3Y1 cells with AVP resulted in transient activation of p44/42 mitogen-activated protein kinase (MAPK) and cPLA(2)alpha, and phosphatidylinositol 3-kinase (PI3K) inhibitor blocked not only AVP-induced PGE(2) synthesis but also MAPK activation, suggesting that PI3K is involved in the AVP-induced MAPK and cPLA(2)alpha activation, which initiates the production of PGE(2). These results suggest that PGE(2) generated by the stimulation of AVP probably modulates the physiological effects of AVP.

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RGD Object Information
RGD ID: 2300349
Created: 2008-09-12
Species: All species
Last Modified: 2008-09-12
Status: ACTIVE



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