Einat Levy

Ben-Gurion University of the Negev, Be'er Sheva`, Southern District, Israel

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Publications (2)5.11 Total impact

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    ABSTRACT: The aim of the present study was to investigate the short-term effect of bradykinin on the two cyclooxygenase species in neonatal rat glial cells. In spite of the fact that cyclooxygenase protein levels were not altered, an increase in cyclooxygenase activity was observed. Use of cyclooxygenase-1 inhibitors and paracetamol resulted in complete elimination of the bradykinin-induced prostaglandin E(2) synthesis and of cyclooxygenase enzyme activity. Cyclooxygenase-2 inhibitors only partially inhibited enzyme activity and prostaglandin production. Our data suggest that cyclooxygenase-1 is probably the major contributor to short-term modulation of glial prostaglandin E2 synthesis by bradykinin.
    Peptides 05/2007; 28(4):845-50. · 2.52 Impact Factor
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    ABSTRACT: The role of kinins, well known as peripheral inflammatory mediators, in the modulation of brain inflammation is unclear. The present data show that bradykinin, a bradykinin B(2) receptor agonist, enhanced both basal and lipopolysaccharide-induced prostaglandin E(2) synthesis in rat neonatal glial cells in culture. By contrast, Lys-des-Arg(9)-bradykinin, which is a kinin breakdown product and a selective bradykinin B(1) receptor agonist, attenuated both basal and lipopolysaccharide-induced production of prostaglandin E(2) in glia. These results suggest a feedback regulatory mechanism of kinins on glial cells, in which prostaglandin synthesis is initially enhanced by bradykinin (B(2)) and eventually blocked by the effect of the kinin breakdown product, acting on bradykinin B(1) receptors.
    European Journal of Pharmacology 10/2006; 546(1-3):197-200. · 2.59 Impact Factor