ArticleAdvanced biomedical research2015
The effect of cyclic nucleotide analog drugs on the mediators release from basophils.
Article in Advanced biomedical research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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4 authors at 3 institutions in 2 countries.
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Abstract
backgroundThe cyclic nucleotides, cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP), are intracellular second messengers that play an important role in modulating inflammatory cells involved in allergic diseases. In general, cAMP suppresses the activity of immune and inflammatory cells. We aim to evaluate the roles of cAMP and cGMP in regulating basophil activity. MATERIALS AND
methodsBasophil-enriched preparations were incubated with analogs and then challenged with anti-IgE or IL-3 (4 or 24 hours). Supernatants were assayed for histamine, IL-4, and IL-13 release. The effects of Sp-8-CPT-cAMPS and Sp-8-CPT-cGMPS on IL-3-dependent mediator release from basophils were determined. The cells were pre-incubated with an analog and then incubated with IL-3 for 24 hours.
resultsSp-8-CPT-cAMPS was an effective (P < 0.05) inhibitor of IL-4, IL-13, and histamine release from basophils. However, paradoxically, Sp-8-CPT-cGMPS enhanced histamine release and IL-13 generation, but by contrast, had little effect on IL-4 generation. Sp-8-CPT-cGMPS inhibited cytokine generation, but enhanced the release of histamine release to a modest extent.
conclusionThis study shows that the cAMP/protein kinase A (PKA) pathway may be inhibitory to the IgE- and non-IgE-dependent release of mediators from basophils.
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