XXXX -induced responses in the salivary gland cells of Helisoma trivolvis.

@entity4033 @entity1026 @entity972 @entity5128 @entity1239 @entity1372 @entity2134 @entity1617 @entity1877 @entity3897 @entity460 @entity2899 @entity5402 @entity30715 @entity934
This study describes the actions of @entity934 ( @entity1617 ) on the salivary gland cells of Helisoma. Perfusion of the salivary gland cells with @entity1617 produces a long-lasting depolarization accompanied by an increase in the input conductance of the gland cells. The depolarization is often followed by a long-lasting hyperpolarization. @entity5402 , @entity30715 , and @entity1877 also produce depolarizing responses. @entity1239 and @entity2134 produce only a small depolarization in the gland cells. The following cholinergic antagonists are effective in blocking the gland-cell response to @entity1617 : @entity5128 , @entity3897 , @entity4033 , @entity2899 , and @entity1026 . A new preparation, the "isolated acinus," was utilized to obtain the reversal potential of the @entity1617 response. The mean reversal potential in 10 preparations was -7 +/- 8 mV. The depolarizing phase of the response is dependent on the presence of both external @entity460 and external @entity1372 ions. The long-lasting hyperpolarization is produced by the activity of an electrogenic @entity1372 - @entity972 pump. The properties of the @entity934 receptors on the salivary gland cells of Helisoma are compared with those described in other gastropod preparations.
