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Effects of Lubiprostone on Gastrointestinal Transit & pH in Irritable Bowel Syndrome (IBS) With Constipation

2014-07-24 14:00:40 | BioPortfolio

Summary

Irritable bowel syndrome (IBS) is a common disorder which presents with abdominal pain or discomfort in association with altered bowel habit. IBS is further subcategorized as three types according to the predominant bowel movement pattern: IBS with constipation (IBS-C), IBS with diarrhea (IBS-D), and mixed-IBS (IBS-M). The exact causes of IBS remain incompletely understood, but proposed mechanisms include abnormal motility, visceral hypersensitivity, abnormal brain-gut interactions, psychological distress, and altered GI tract motility.

Lubiprostone, a novel drug that works by activating the colonic ClC-2 chloride channel, has been approved for use in patients with chronic idiopathic constipation and recently approved for the treatment of IBS-C in women aged 18 and older. By activating the ClC-2 chloride channel in the colon, lubiprostone allows more fluid secretion into the intestinal lumen which leads to softer stool consistency. In phase III clinical trials, patients with IBS-C receiving lubiprostone have reported improvements in many symptoms such as abdominal pain and constipation. However, there is limited physiologic data to explain how exactly lubiprostone improves IBS-C symptoms.

The Smartpill is a novel non-digestible capsule that is capable of measuring intraluminal pH, pressure, and temperature in the gastrointestinal (GI) tract. Smartpill has been shown to accurately measure whole gut as well as regional (i.e. stomach, small bowel, colon) transit time.

The primary aim of this study is to determine the effects of lubiprostone on whole GI tract transit, colonic transit, motility, and intraluminal pH in patients with IBS-C through evaluation with the Smartpill. The investigators propose to study the effect of lubiprostone vs. placebo on these parameters, and secondarily to evaluate changes in these parameters with differing doses of lubiprostone.

The investigators hypothesize that lubiprostone will increase whole GI and colonic transit compared to placebo in patient with IBS. the investigators do not expect a change in intraluminal pH with lubiprostone compared to placebo.

Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)

Conditions

Adult

Intervention

Lubiprostone, Placebo

Location

University of Michigan Health System
Ann Arbor
Michigan
United States
48103

Status

Not yet recruiting

Source

University of Michigan

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-07-24T14:00:40-0400

Clinical Trials [413 Associated Clinical Trials listed on BioPortfolio]

Safety and Efficacy of Lubiprostone in Pediatric Patients With Constipation

The primary purpose of this study is to evaluate the safety and efficacy of lubiprostone in a pediatric population with constipation, including the pharmacokinetics of lubiprostone, in a s...

Lubiprostone, Colonic Motility and Sensation

A trial of 60 healthy adults to compare the effects of oral lubiprostone, 24 microgram per day and placebo for three days, on sensation and contractions of the colon using validated metho...

Evaluation of the Bioequivalence of Sprinkle and Capsule Formulations of Lubiprostone, as Compared to Placebo

To evaluate the bioequivalence of sprinkle and capsule formulations of lubiprostone, as compared to placebo, when administered orally in subjects with CIC.

Lubiprostone for Treatment of Chronic Idiopathic Constipation

The purpose of this study is to evaluate the efficacy and safety of oral administration of lubiprostone 24 μg twice daily (BID) for 4 weeks in participants with chronic idiopathic constip...

Lubiprostone for the Treatment of Chronic Idiopathic Constipation

The purpose of this study is to evaluate the efficacy and safety of oral administration of lubiprostone 24 μg twice daily (BID) for 4 weeks in participants with chronic idiopathic constip...

PubMed Articles [5046 Associated PubMed Articles listed on BioPortfolio]

Efficacy, safety, and tolerability of lubiprostone for the treatment of non-alcoholic fatty liver disease in adult patients with constipation: The LUBIPRONE, double-blind, randomised, placebo-controlled study design.

This paper reports the protocol of a randomised, double-blind, placebo-controlled study to test the efficacy, safety, and tolerability of lubiprostone (LUB) vs. placebo on suppressing gut permeability...

Efficacy of Lubiprostone for the Treatment of Opioid-Induced Constipation, Analyzed by Opioid Class.

To examine the efficacy and safety of lubiprostone for the treatment of opioid-induced constipation (OIC) in patients by opioid class received.

Comparison of acupuncture and other drugs for chronic constipation: A network meta-analysis.

The objective of this study was to compare the efficacy and side effects of acupuncture, sham acupuncture and drugs in the treatment of chronic constipation. Randomized controlled trials (RCTs) assess...

Effect of Oral Valproic Acid vs Placebo for Vision Loss in Patients With Autosomal Dominant Retinitis Pigmentosa: A Randomized Phase 2 Multicenter Placebo-Controlled Clinical Trial.

There are no approved drug treatments for autosomal dominant retinitis pigmentosa, a relentlessly progressive cause of adult and childhood blindness.

Electrocardiographic effects of hawthorn (Crataegus oxyacantha) in healthy volunteers: A randomized controlled trial.

The objective of this study was to evaluate the electrocardiographic effects of hawthorn in healthy adult volunteers. It was double-blind cross-over trial randomized 20 healthy adult volunteers to rec...

Medical and Biotech [MESH] Definitions

Member of a bicyclic fatty acid class of compounds derived from PROSTAGLANDIN E1 involved in chloride channel gating.

Misunderstanding among individuals, frequently research subjects, of scientific methods such as randomization and placebo controls.

An effect usually, but not necessarily, beneficial that is attributable to an expectation that the regimen will have an effect, i.e., the effect is due to the power of suggestion.

Transfer from pediatric to adult care.

A trypanosome found in the blood of adult rats and transmitted by the rat flea. It is generally non-pathogenic in adult rats but can cause lethal infection in suckling rats.

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