Glucose release in mantle tissue of Mytilus: regulation by calcium ions |
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| Authors: | C A Crespo J Espinosa |
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| Institution: | Departamento de Fisiología, Facultad de Farmacia, Universidad de Santiago de Compostela, Spain. |
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| Abstract: | Glucose release activity in mantle tissue of Mytilus galloprovincialis was studied. Mantle tissue shows a basal glucose releasing activity. The external Ca2+ absence increases 2 to 3-fold the basal glucose release, and when A23187 (10 microM) was simultaneously present the release doubled that obtained in Ca2(+)-absence. EGTA (2 mM), chlorpromazine (200 microM) and lanthanum (3 mM) decreased the glucose release promoted by external Ca2+ absence. This and other data suggest that glucose release activity in mantle tissue might be controlled by Ca2+ ions. |
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