[Effect of sodium deprivation on the isolated guinea pig ileum in a physiological medium or in the presence of scorpion venom].

We concluded from our results that contractures which occurred when NaCl is replaced by other substitutes could be due to increased Ca entry. This ionic disturbance does not produce any increase of the resting acetylcholine output such as that described for the innervated longitudinal muscle obtained from the ileum. In this environment, venom from the Scorpion (Androctonus australis) is shown to have no effect.