ABSTRACT
The digestive gland of Pomacea lineata, a prosobranch gastropod mollusc inhabiting both fresh water and land, does not contain cholinomimetic compounds as do the glands of species of Aplysia, marine opisthobranch gastropods, in which both acetylcholine and urocanylcholine are present. The only pharmacological action detected for the digestive gland of Pomacea was spasmogenic activity of a crude homogenate containing 0.1 g tissue equivalents on the snail's own esophagus bathed in 10 ml of a physiological solution prepared on the basis of the animal's hemolymph composition. The spamodic activity was not blocked by atropine, bromylsergic acid diethylamide or anthazoline.
Subject(s)
Esophagus/drug effects , Tissue Extracts/pharmacology , Acetylcholine/pharmacology , Animals , Atropine/pharmacology , Histamine/pharmacology , Serotonin/pharmacology , SnailsABSTRACT
The digestive gland of Pomacea lineata, a prosobranch gastropod mollusc inhabiting both fresh water and land, does not contain cholinomimetic compounds as do the glands species of Aplysia, marine opisthobranch gastropods, in which both acetylcholine and urocanylcholine are present. The only pharmacological detected for the digestive fland of Pomacea was spasmogenic activity of a crude homognate containing 0.1 g tissue equivalents on the snail's own esophagus bathed in 10ml of a physiological prepared on the basis of the animnal's hemolymphy composition. The spamodic activity was not blocked by atropine, bromlysergic acid diethylamide or anthazoline
