View Clinical Trial (Medical Research Study)
The Impact of Lubiprostone on Mucus Secretion in Asymptomatic Volunteers and Patients With Chronic Constipation
| City: |
|
El Paso |
| State: |
|
Texas |
| Zip Code: |
|
79905 |
| Conditions: |
|
Constipation |
| Purpose: |
|
The investigators hypothesize that the symptoms of chronic constipation in some patients are
developed due to diminished production and secretion of the alimentary tract mucus resulting
in poor lubrication.
Therefore, the investigators assume that administration of lubiprostone may restore this
lubrication impairment by stimulation of mucus production and secretion within the
gastrointestinal tract.
|
| Study Summary: |
|
Specific Aim 1. To test the effect of Lubiprostone, 24 mcg twice a day (BID) for 1 week, on
gastric mucus production in 20 asymptomatic volunteers and 20 patients with chronic
constipation in basal conditions (primary outcome).
Specific Aim 2. To explore the effect of Lubiprostone, 24 mcg BID for 1 week, on gastric
mucus production in 20 asymptomatic volunteers and 20 patients with chronic constipation
during stimulation of gastric secretion with pentagastrin, mimicking the meal-stimulated
conditions (primary outcome).
Specific Aim 3. To address the influence of Lubiprostone, 24 mcg BID for 1 week, on gastric
mucin production, the major component of mucus, in 20 asymptomatic volunteers and 20
patients with chronic constipation in basal conditions (primary outcome).
Specific Aim 4. To test the influence of Lubiprostone, 24 mcg BID for 1 week, on gastric
mucin production, the major component of mucus, in 20 asymptomatic volunteers and 20
patients with chronic constipation during stimulation of gastric secretion with
pentagastrin, mimicking the meal-stimulated conditions (primary outcome).
Specific Aim 5. To explore the impact of Lubiprostone, 24 mcg BID for 1 week, on
viscoelasticity of gastric mucus in 20 asymptomatic volunteers and 20 patients with chronic
constipation in basal conditions (secondary outcome).
Specific Aim 6. To address the impact of Lubiprostone, 24 mcg BID for 1 week, on
viscoelasticity of gastric mucus in 20 asymptomatic volunteers and 20 patients with chronic
constipation during stimulation of gastric secretion with pentagastrin, mimicking the
meal-stimulated conditions (secondary outcome).
|
| Criteria: |
|
Asymptomatic Volunteers:
Inclusion Criteria:
- 18-65 years of age
- Capable of and willing to give informed consent, and willing to comply with all study
requirements
Exclusion Criteria:
- Pregnancy or lactation
- Subjects unwilling to practice adequate contraception throughout the screening period
through 14 days after study termination
- Illegal use of illegal drugs
- Regular consumption of 2 or more drinks of alcohol per day
- Chronic non-steroidal anti- inflammatory drugs (NSAID) use
- Chronic use of H2 receptor antagonists or Proton Pump Inhibitors (PPIs) within 14
days prior to screening
- History of gastric of duodenal ulcer or chronic non-ulcer dyspepsia
- Positive Helicobacter pylori (H. pylori) serology
Patients with Chronic Constipation:
Inclusion Criteria:
- Age 18-65
- At least 6 months history of constipation. Constipation defined as: a. Less than
three complete spontaneous bowel movements per week and one or more of the following:
i) At least 25% of stools are very hard and/or hard stools ii) Sensation of
incomplete evacuation following at least 25% of bowel movements iii) Straining on at
least 25% of defecations The above criteria are only applicable to spontaneous bowel
movements. Patients who have no spontaneous bowel movements (bowel movements are
preceded by laxative intake) are considered constipated and are eligible for this
study
- For patients >= years of age, normal colonic anatomy as documented by colonoscopy,
double-contrast barium enema, or flexible sigmoidoscopy performed within the previous
5 years
Exclusion Criteria
- Pregnancy or lactation
- Subjects unwilling to practice adequate contraception throughout the period of
screening through 14 days after study termination
- Use of laxatives 3 days immediately prior to randomization (except fiber or bulking
agents)
- Use of any of the following drugs within 3 days prior to randomization a) Prokinetic
agents (tegaserod, domperidone, cisapride, metoclopramide, erythromycin, b)
Medications containing opiates c) Antispasmodic (e.g. atropine, hyoscyamine,
scopolamine, glycopyrrolate)
- Use of illegal drugs
- Regular consumption of 2 drinks of alcohol per day
- Chronic NSAIDs use
- Chronic use of H2 receptor antagonist or PPIs within 14 days prior to screening
- History of gastric or duodenal ulcer, Inflammatory bowel disease (IBD), or chronic
non-ulcer dyspepsia
- Diabetes mellitus (DM) type 1
- Parkinson's disease
- Existence of any medical condition that requires chronic therapy
- Positive H. pylori serology
|
| NCT ID: |
|
NCT01447849 |
| Primary Contact: |
|
Principal Investigator
Jerzy Sarosiek, MD, PhD
Texas Tech University Health Sciences Center
Jerzy Sarosiek, MD, PhD
Phone: 915-545-6626 ext. 297
Email: jerzy.sarosiek@ttuhsc.edu
|
| Backup Contact: |
|
Email: sean.connery@ttuhsc.edu
Sean Connery
|
| Location Contact: |
|
El Paso, Texas 79905
United States
There is no listed contact information for this specific location.
Site Status: Recruiting |
| Data Source: |
|
ClinicalTrials.gov |
| Date Processed: |
|
May 22, 2013 |
| Modifications to this listing: |
|
Only selected fields are shown, please use the link
below to view all information about this clinical trial. |
|
Click to view Full Listing
|