Electrical activity in an exocrine gland: optical recording with a potentiometric dye.
Propagated action potentials in the salivary gland of a freshwater snail were detected by optical means. Voltage-dependent absorption changes from acinar cells stained with a merocyanine-oxazolone dye faithfully reproduced the time course of electrical activity in this tissue. Such signals may provide a useful tool for the study of endocrine tissue as well.
D000200:Action Potentials; D000818:Animals; D004396:Coloring Agents; D004594:Electrophysiology / Q000379:methods; D008564:Membrane Potentials; D010081:Oxazolone / Q000031:analogs & derivatives; D011199:Potentiometry / Q000379:methods; D011744:Pyrimidinones; D012469:Salivary Glands / Q000502:physiology*; D012908:Snails
D004396:Coloring Agents; D011744:Pyrimidinones; D010081:Oxazolone; C025144:NK 2367