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van Calker, D. et al.

Nerve growth factor potentiates the hormone-stimulated intracellular accumulation of inositol phosphates and Ca2+ in rat PC12 pheochromocytoma cells: comparison with the effect of epidermal growth factor.

The effects of nerve growth factor (NGF) and epidermal growth factor ( EGF) on the intracellular accumulation of inositol phosphates and on cytosolic free Ca2+ concentrations were studied in rat PC12 pheochromocytoma cells. Both NGF and EGF potentiate in these cells the increase in the accumulation of inositol phosphates that is elicited by bradykinin and carbachol. A corresponding potentiation was also found for the agonist-induced increase of cytosolic Ca2+ concentrations. The effect of NGF, but not that of EGF, is abolished when the cells are preincubated with 5'-deoxy-5'-methylthioadenosine, an inhibitor of S-adenosylhomocysteine hydrolase. These results suggest that an increased response to hormones, which act via phosphoinositide-derived second messengers, may be important in the mechanism of action of NGF and EGF.[1]

References

Nerve growth factor potentiates the hormone-stimulated intracellular accumulation of inositol phosphates and Ca2+ in rat PC12 pheochromocytoma cells: comparison with the effect of epidermal growth factor. van Calker, D., Takahata, K., Heumann, R. J. Neurochem. (1989) [Pubmed]

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