Abstract.
Objective and Design: We investigated a signal transduction pathway involved in NGF induced histamine secretion from mast cells. We compared this mechanism with the exocytosis induced by basic secretagogue compound 48/80.
Materials and Methods: Isolated rat peritoneal mast cells were obtained from male Wistar rats. Histamine release was assayed spectrofl uorometrically.
Results: We found that tyrosine kinase inhibitor genistein, phospholipase C (PLC) inhibitor U-73122, phosphatidylinositol 3-kinase (PI-3 kinase) inhibitor wortmannin, protein kinase C (PKC) inhibitors, staurosporine and GF109203X, but not MAP kinase inhibitors, SB203580 and PD98059, reduce histamine secretion in NGF provoked mast cell degranulation. In compound 48/80 mediated degranulation, we confi rmed only the involvement of tyrosine kinase and PLC, but not PI-3 kinase, PKC and MAP kinases.
Conclusions: Our results indicate that release of histamine from mast cells after stimulation with NGF is regulated by tyrosine kinase, PLC, PI-3 kinase and PKC, but not by MAP kinases. This biochemical pathway differs from that provoked by compound 48/80.
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Received 16 February 2005; accepted by A. Falus 12 May 2005
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Štempelj, M., Ferjan, I. Signaling pathway in nerve growth factor induced histamine release from rat mast cells. Inflamm. res. 54, 344–349 (2005). https://doi.org/10.1007/s00011-005-1364-7
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DOI: https://doi.org/10.1007/s00011-005-1364-7