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  • Title: Nitric oxide mediates the PAF-stimulated cyclic GMP production in hippocampal slices.
    Author: Catalán RE, Martínez AM, Hernández F, Pérez MJ, Calcerrada MC.
    Journal: Biochem Biophys Res Commun; 1996 Sep 04; 226(1):27-31. PubMed ID: 8806587.
    Abstract:
    Platelet activating factor (PAF) treatment caused a transient rise in cyclic GMP levels in rat hippocampal slices. The stimulation of cyclic GMP synthesis induced by PAF was dose-dependent and was suppressed after treatment with PCA-4248, a PAF antagonist, a fact that could suggest the involvement of specific PAF receptors. In addition, when slices were incubated in the presence of N-nitro-L-arginine, a nitric oxide (NO) synthase inhibitor, PAF-stimulated cyclic GMP generation was abolished. Therefore, PAF activates guanylyl cyclase most probably via formation of NO. PAF also induced a time-dependent increase of NO synthase activity in hippocampal slices in correlation with the increase observed in cyclic GMP levels.
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