RESUMO
Adenylate cyclase and beta-receptor binding in turkey erythrocytes is studied under the influence of dioctyl sodium sulphosuccinate (DSS), sodium dodecyl sulphate (SDS), sodium deoxycholate (DOC), filipin, oxyphenisatine and ethanol. Intact and lysed erythrocytes and erythrocyte membranes were investigated. In general the fluoride stimulated enzyme was most resistant to the action of the substances followed by the ligand binding, the hormone stimulated enzyme being most sensitive to the action of the substances. However, in certain ranges of concentrations, DSS, SDS, filipin and oxyphenisatine could further stimulate the fluoride stimulated enzyme. The adenylate cyclase in intestinal mucosa cells was studied in the presence of DSS, SDS, DOC and oxyphenisatine. The fluoride stimulated enzyme was here less stable than the basal enzyme activity, and two of the substances (SDS and oxyphenisatine) stimulating the erythrocyte enzyme could not stimulate the fluoride stimulated intestinal mucosa cell enzyme.