Effect of Linaclotide on Colonic Motility Assessed With Intraluminal Colonic High-Resolution Manometry in Healthy...

Area of Science:

• Gastroenterology
• Pharmacology
• Physiology

Background:

• Chronic constipation treatments like linaclotide, PEG, bisacodyl, and prucalopride show superiority over placebo.
• Previous research detailed the effects of PEG, bisacodyl, and prucalopride on colonic motor patterns.
• This study specifically investigates linaclotide's impact on colonic motility.

Purpose of the Study:

• To evaluate the effect of linaclotide compared to placebo on colonic motility.
• To assess changes in colonic motor patterns using high-resolution manometry (HRM).

Main Methods:

• Ten healthy volunteers underwent two colonic HRM studies with 40 solid-state sensors.
• Linaclotide (290 μg) or placebo was administered orally in a double-blind, randomized, cross-over manner.
• Colonic motility was recorded for 180 minutes before and after a standardized meal, analyzing motility index, propagating sequences, and pancolonic pressurizations.

Main Results:

• Linaclotide significantly increased long-distance propagating sequences compared to placebo (p=0.026), particularly during and after meals.
• A significant increase in pre-prandial pancolonic pressurizations was observed with linaclotide (p=0.043).
• No significant differences in total pancolonic pressurizations or colonic motility index changes were found between treatments.

Conclusions:

• Acute linaclotide administration enhances colonic motility in healthy subjects.
• The drug increases the frequency of long-distance propagating sequences and pre-prandial pancolonic pressurizations.
• These findings contribute to understanding linaclotide's prokinetic effects in the colon.