title: Multiple effects of arginine vasopressin on prostaglandin E2 synthesis in fibroblasts.
abstract: Recent evidence supports the viewpoint that vasopressin, a neurohypophyseal peptide, should be also considered as a neuroendocrine modulator of immune and inflammatory responses. In this work we investigated the role of vasopressin in the regulation of prostaglandin E(2) synthesis by human dermal fibroblasts. Recombinant human interleukin-1 beta increased prostaglandin E(2) synthesis in fibroblasts about sixfold. The prostaglandin E(2) response to interleukin-1 beta was attenuated by lower concentrations of vasopressin (10(-10)-10(-9) M). By contrast, higher concentrations (10(-8)-10(-7) M) of vasopressin effected significant enhancement of the interleukin-1 beta-induced prostaglandin E(2) synthesis. In a similar way, vasopressin (10(-8)-10(-7) M), in the absence of interleukin-1, significantly increased prostaglandin E(2) production. An inhibitory effect of lower concentrations of vasopressin was also observed on basal production of prostaglandin E(2). The effects of vasopressin on basal and interleukin-1 beta-induced prostaglandin E(2) synthesis were antagonized by selective vasopressin receptor antagonists. The findings presented here disclose a novel modulatory role of vasopressin on prostaglandin E(2) synthesis in human dermal fibroblasts and suggest a possible role of vasopressin in the regulation of inflammation.
authors.affiliation: Department of Clinical Pharmacology, Ben-Gurion University and Soroka Medical Center, P.O.B. 653, Beersheva 84105, Israel. fleischer@bgumail.bgu.ac.il
authors.forename: Sigal
authors.initials: S
authors.lastname: Fleisher-Berkovich
authors.forename: Elena
authors.initials: E
authors.lastname: Kagan
authors.forename: Nili
authors.initials: N
authors.lastname: Grossman
authors.forename: Abraham
authors.initials: A
authors.lastname: Danon
mesh_terms: D001127:Arginine Vasopressin / Q000494:pharmacology*; D002478:Cells, Cultured; D015232:Dinoprostone / Q000096:biosynthesis*; D004305:Dose-Response Relationship, Drug; D005347:Fibroblasts / Q000187:drug effects* / Q000378:metabolism*; D006801:Humans; D007375:Interleukin-1 / Q000494:pharmacology; D008297:Male
chemical_list: D007375:Interleukin-1; D001127:Arginine Vasopressin; D015232:Dinoprostone