Glucose release in mantle tissue of Mytilus: regulation by calcium ions.
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.
Crespo
C A
CA
Departamento de Fisiología, Facultad de Farmacia, Universidad de Santiago de Compostela, Spain.
Espinosa
J
J
D000818:Animals; D049872:Bivalvia / Q000378:metabolism*; D000001:Calcimycin / Q000494:pharmacology; D002118:Calcium / Q000494:pharmacology / Q000502:physiology*; D002746:Chlorpromazine / Q000494:pharmacology; D004492:Edetic Acid / Q000494:pharmacology; D005947:Glucose / Q000378:metabolism*; D006003:Glycogen / Q000378:metabolism*; D007811:Lanthanum / Q000494:pharmacology
D000001:Calcimycin; D007811:Lanthanum; D006003:Glycogen; D004492:Edetic Acid; D005947:Glucose; D002118:Calcium; D002746:Chlorpromazine