Effect of tacrine on cytosolic Ca2+ level and calmodulin in gastric muscle tissues of rat.

Introduction: Tacrine is an acetylcholinesterase inhibitor. It has an indirect cholinomimetic effect inducing contractions of the gastric smooth muscles. The contractions are related to the effect of the accumulated acetylcholine in tissues on the respective choline receptors.

Improvement of visualization in computed tomographic colonography after mechanic air insufflation.

Objective: Our aim was to develop an insufflation system for CT colonography enabling even and quick air inflation as well as pressure control and optional emergency decompression.

Patients And Methods: A modified air insufflation system for CT colonography, consisting of an electric air pump, manometer, safety valve, and a balloon tip is presented. Thirty one patients underwent CT colonography from August to December, 2004.