Title : A role for ERK1/2 in EGF- and ATP-dependent regulation of amiloride-sensitive sodium absorption.

Pub. Date : 2005 May

PMID : 15634742






3 Functional Relationships(s)
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1 The addition of epidermal growth factor (EGF) to the basolateral bathing solution of polarized monolayers reduced amiloride-sensitive short-circuit current (I(sc)) by 15-25%, whereas the addition of ATP to the apical bathing solution decreased I(sc) by 40-60%. Amiloride epidermal growth factor Mus musculus
2 The addition of epidermal growth factor (EGF) to the basolateral bathing solution of polarized monolayers reduced amiloride-sensitive short-circuit current (I(sc)) by 15-25%, whereas the addition of ATP to the apical bathing solution decreased I(sc) by 40-60%. Amiloride epidermal growth factor Mus musculus
3 The results of these studies demonstrate that acute inhibition of amiloride-sensitive sodium transport by extracelluar ATP and EGF involves ERK1/2 activation and suggests a role for MAP kinase signaling as a negative regulator of electrogenic sodium absorption in epithelia. Amiloride epidermal growth factor Mus musculus