11.   The four patients with proven neuropathy had severely disturbed propagation and organisation of antroduodenal motor activity.

12.   Of the remaining two patients, one had both low amplitude of contractions and severe disorganisation of activity, and one has no motor activity detected.

13.   In our patients, those with proven neural and muscular pathology conformed to these patterns of motor activity.

14.   Luminal bile and taurocheodeoxycholic acid inhibited ileal motor activity.

15.   Arterial infusion of venous effluencts from a bile inhibited ileum suppressed motor activity in a second isolated ileum.

16.   This shows the presence of a humoral inhibitor of ileal motor activity.

17.   Thus, luminal infusion of rabbit bile and TDCA inhibited motor activity in isolated segments of rabbit terminal ileum.

18.   Arterial infusion of venous effluents collected before bile stimulation did not change motor activity.

19.   These studies showed that a humoral agent present in the venous effluent during luminal administration of bile, inhibited motor activity in isolated segments of terminal ileum.

20.   Intra-arterial infusion of PYY significantly inhibited carbachol stimulated motor activity.