Format

Send to

Choose Destination
See comment in PubMed Commons below
Dig Dis Sci. 2003 Aug;48(8):1482-6.

Canine small bowel motor activity in response to intraduodenal infusion of nutrient mixtures of increasing caloric load in dogs.

Author information

1
Program of Physiology and Biophysics, School of Medicine, University of Chile, Santiago, Chile.

Abstract

The effect of nutrients on small intestinal motility is controversial. Our aim was to analyze the effect of intraduodenal infusion of mixtures of nutrients of increasing caloric load, on intestinal motility. Studies were performed in dogs with a duodenal cannula. Isosmolar infusions of saline, 0.5, 2, and 4 kcal/min were performed and motility recorded by means of infused catheters. Nonstatistically significant differences were observed between frequency of contractions during infusion of 0.5 (4.1 +/- 1.6 cpm) and 2 kcal/min (5.3 +/- 1.5 cpm) compared to control (4.3 +/- 1.9 cpm). With 4 kcal/min a significant decrease of frequency (2.7 +/- 0.9 cpm) was observed. A similar finding was observed for amplitude of contrations. With 0.5 kcal/min fasting cyclic activity was still present, but the numbers of phase III were significantly reduced, associated with an increased duration of phase II. With higher caloric loads cyclic fasting activity was replaced by marked variations of frequency, following a cyclic pattern. A lower threshold for mechanisms switching the fasting to fed state was observed, compared to those controlling frequency and amplitude.

PMID:
12924640
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Loading ...
    Support Center