Decreased formation of inositol trisphosphate in Madin-Darby canine kidney cells under conditions of β-glucosidase inhibition
1992
Abstract Recent work has demonstrated the enhancement of hormone-stimulated inositol trisphosphate formation in renal epithelial cells under conditions of glucosylceramide depletion. The role of glucosylceramide metabolism was explored further by exposing Madin-Darby canine kidney (MDCK) cells to the β-glucosidase inhibitor conduritol B epoxide, which produced time-dependent and concentration-dependent increases in glucosylceramide levels and decreased bradykinin-stimulated inositol trisphosphate formation from isolated MDCK cell membranes. These data provide further support for an association between glucosylceramide levels and hormone-stimulated inositol trisphosphate formation.
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