Insect Salivary Glands: Stimulation of Fluid Secretion by 5-Hydroxytryptamine and Adenosine-3′,5′-monophosphate

Abstract

Low concentrations (10(-9)M) of 5-hydroxytryptamine increase the rate of fluid secretion by isolated salivary glands of adult Calliphora. 5-Hydroxytry ptamine is present in Calliphora brain. Adenosine-3',5'-monophosphate (cyclic AMP) also stimulates fluid secretion and may be involved in the mode of action of 5-hydroxytryptamine.