DiarrheaPhase 4NCT00763399
Effect of Probiotics on Intestinal Bacterial Population and Immune Modulation
A Phase 4 study testing probiotics (antibiophilus(Lactobacillus casei), bio-three) in people with Diarrhea and Constipation, run by Chang Gung Memorial Hospital at 1 site in Taiwan.
Trial summary
The balance between immunogenic and tolerogenic activities in human immune system strongly depends on microflora-induced pro-and anti-inflammatory activities. Probiotics are important components of microflora. The interactions of the different strains of probiotics and the cells of immune system are largely unknown. Read more about this study
- Who is it for?
- Ages 3 months to 10 yearsHealthy volunteers can take part
- Conditions the study is for
- Diarrhea, Constipation
- What is being tested?
- probiotics (antibiophilus(Lactobacillus casei), bio-three)
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 300 participants
- Where
- 1 siteTaiwan
- Study dates
- Oct 2008to May 2010
- Phase
- Phase 4
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 3 months to 10 years
- All sexes
- Healthy volunteers accepted
- Child
Who may be able to join
- Diarrhea
- constipation
Who cannot join
- Shock
- Sepsis
- Past history with GI tract surgery
- Immunodeficiency
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Phase 4 Study of Probiotics on Intestinal Bacterial Population and Immune Modulation
The balance between immunogenic and tolerogenic activities in human immune system strongly depends on microflora-induced pro-and anti-inflammatory activities. Probiotics are important components of microflora. The interactions of the different strains of probiotics and the cells of immune system are largely unknown.
There are many mechanisms by which probiotics enhance intestinal health, including stimulation of immunity, competition for limited nutrients, inhibition of epithelial and mucosal adherence, inhibition of epithelial invasion and production of antimicrobial substances.
Read more
Fecal immunoglobulin A(IgA), lactoferrin and calprotectin were determined by enzyme-linked immunosorbent assay(ELISA) and compared in different groups. Other clinical symptoms or signs, including fever, vomiting, diarrhea, abdominal pain, bloating abdomen, daily intake and body weight were also assessed.
The first aim of our study is to evaluate the role of probiotics and their preparation products on the restoration of intestinal bacterial population. The second aim of our study is determining the immunomodulating effects or anti-inflammatory effects of probiotics on the host (human being). We try to seek to gain an advanced understanding of probiotics versus intestinal microorganism and host interactions, as well as mucosal immune responses to probiotics in the intestine.
Read the detailed description
Some clinical parameters were evaluated according to the following: primary outcome (severity of diarrhea), and secondary outcome including body weight change, appetite and daily intake, bloating or abdominal distension, abdominal pain or colic, constipation, fever, and vomiting were also assessed.
Peripheral blood isolated by Lymphoprep, washed twice in normal saline and once in medium, and suspended in medium [RPMI 1640] to a density of 1 x 106/mL. PBMCs will be isolated from blood donor buffy coats by density gradient centrifugation. The concentration of PBMCs will be adjusted to 106 cells per ml in complete medium, and the cells will be transferred to 24-well plates.Cell surface phenotype expression and intracellular staining. Cells will be stained using a panel of monoclonal antibody (MAb) directed against surface antigens expressed by lymphocytes, monocytes and the appropriate species-specific immunoglobulin G isotype controls. Cells will be acquired using an FACScan (Becton Dickinson) and analyzed with Cell Quest software.
To assess the colonization of intestinal bacteria, fecal samples were collected from each patient on day 0 (the day when patients were enrolled), day 3 and day 7 after probiotics or placebo treatment. The fecal specimens were weighed, homogenized, and serially diluted and plated on selective agar for analysis of bacteria. Fecal bacteria count was expressed as log10 CFU/g feces.
Fecal samples were collected during the treatment period. IgA levels were performed on homogenized fecal samples. Total IgA was determined using goat anti-human IgA-HRP conjugate. The reaction was developed with tetramethyl benzidine (TMB; Zymed Labs.) and read at 450 nm. OD values were converted to ng/g feces of total IgA by comparison with a standard curve developed with anti-human IgA.
The stool samples were prepared and analyzed for lactoferrin. A polyclonal antibody specific for lactoferrin has been pre-coated onto a microplate. Lactoferrin in standards and samples is sandwiched by the immobilized antibody and a biotinylated polyclonal antibody specific for lactoferrin, which is recognized by a streptavidin-peroxidase conjugate. Absorbance is read at OD 450 nm. Lactoferrin was expressed as μg/g feces.
The stool samples were prepared and analyzed for calprotectin. The supernatant was collected and frozen at -20°C. The supernatants were thawed and calprotectin was analyzed with the quantitative calprotectin ELISA and read at OD 450 nm. Calprotectin was expressed as μg/g feces.
- Conditions
- Diarrhea, Constipation
- Being tested
- probiotics (antibiophilus(Lactobacillus casei), bio-three)
- Keywords
- probiotics
- Medical subject headings
- Diarrhea, Constipation
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
probiotics (antibiophilus(Lactobacillus casei), bio-three)Dietary supplement
probiotics (antibiophilus(Lactobacillus casei), bio-three) 4x 10^8CFU/day
| Study group | Role | What they receive |
|---|---|---|
| 97-0549B | Experimental | Not described Receives: Dietary Supplement: probiotics (antibiophilus(Lactobacillus casei), bio-three) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Duration of diarrhea, number of stool passage, bacterial culture for intestinal or cytokine
Measured: within 4 weeks
Secondary outcomes (1)
body weight change, appetite and daily intake, Fecal IgA, lactoferrin and calprotectin levels
secondary outcome including body weight change, appetite and daily intake, bloating or abdominal distension, abdominal pain or colic, constipation, fever, and vomiting were also assessed. IgA levels and bacterial culture were performed on homogenized fecal samples. Fecal lactoferrin and calprotectin levels were measured with samples of feces.
Measured: Within first two weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Oct 2008 (estimated)
- Study startOct 2008
- Primary completionMay 2010
- Study completionMay 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for DiarrheaStudies of the same condition, open and under way.
- More trials run by Chang Gung Memorial HospitalThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 4
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind
- Who is masked
- Participant, Outcomes assessor
- Enrolment
- 300 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Chang Gung Memorial Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Chien-Chang Chen, MD, Chang Gung Memorial Hospital
- Investigators
- Chien-Chang Chen, MD, Principal investigator, Pediatric Department, Chang Gung Memorial Hospital, Taiwan
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00763399
- Sponsor's protocol ID
- 97-0549B
- Status last verified
- Jul 2012
- First submitted
- 23 Sep 2008
- Last updated
- 17 Jul 2012
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 17 Jul 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Phase 4 Study of Probiotics on Intestinal Bacterial Population and Immune Modulation
- ClinicalTrials.gov ID
- NCT00763399
- Acronym / sponsor ID
- 97-0549B
- Conditions
- Diarrhea, Constipation
- Keywords
- probiotics
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 300 participants (estimated)
- Lead sponsor
- Chang Gung Memorial HospitalUniversity, hospital or other
- Study start
- Oct 2008
- Primary completion
- May 2010 (actual)
- Study completion
- May 2010 (actual)
- First posted
- 1 Oct 2008 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The balance between immunogenic and tolerogenic activities in human immune system strongly depends on microflora-induced pro-and anti-inflammatory activities. Probiotics are important components of microflora. The interactions of the different strains of probiotics and the cells of immune system are largely unknown.
There are many mechanisms by which probiotics enhance intestinal health, including stimulation of immunity, competition for limited nutrients, inhibition of epithelial and mucosal adherence, inhibition of epithelial invasion and production of antimicrobial substances.
Fecal immunoglobulin A(IgA), lactoferrin and calprotectin were determined by enzyme-linked immunosorbent assay(ELISA) and compared in different groups. Other clinical symptoms or signs, including fever, vomiting, diarrhea, abdominal pain, bloating abdomen, daily intake and body weight were also assessed.
The first aim of our study is to evaluate the role of probiotics and their preparation products on the restoration of intestinal bacterial population. The second aim of our study is determining the immunomodulating effects or anti-inflammatory effects of probiotics on the host (human being). We try to seek to gain an advanced understanding of probiotics versus intestinal microorganism and host interactions, as well as mucosal immune responses to probiotics in the intestine.
Detailed description
Some clinical parameters were evaluated according to the following: primary outcome (severity of diarrhea), and secondary outcome including body weight change, appetite and daily intake, bloating or abdominal distension, abdominal pain or colic, constipation, fever, and vomiting were also assessed.
Peripheral blood isolated by Lymphoprep, washed twice in normal saline and once in medium, and suspended in medium [RPMI 1640] to a density of 1 x 106/mL. PBMCs will be isolated from blood donor buffy coats by density gradient centrifugation. The concentration of PBMCs will be adjusted to 106 cells per ml in complete medium, and the cells will be transferred to 24-well plates.Cell surface phenotype expression and intracellular staining. Cells will be stained using a panel of monoclonal antibody (MAb) directed against surface antigens expressed by lymphocytes, monocytes and the appropriate species-specific immunoglobulin G isotype controls. Cells will be acquired using an FACScan (Becton Dickinson) and analyzed with Cell Quest software.
To assess the colonization of intestinal bacteria, fecal samples were collected from each patient on day 0 (the day when patients were enrolled), day 3 and day 7 after probiotics or placebo treatment. The fecal specimens were weighed, homogenized, and serially diluted and plated on selective agar for analysis of bacteria. Fecal bacteria count was expressed as log10 CFU/g feces.
Fecal samples were collected during the treatment period. IgA levels were performed on homogenized fecal samples. Total IgA was determined using goat anti-human IgA-HRP conjugate. The reaction was developed with tetramethyl benzidine (TMB; Zymed Labs.) and read at 450 nm. OD values were converted to ng/g feces of total IgA by comparison with a standard curve developed with anti-human IgA.
The stool samples were prepared and analyzed for lactoferrin. A polyclonal antibody specific for lactoferrin has been pre-coated onto a microplate. Lactoferrin in standards and samples is sandwiched by the immobilized antibody and a biotinylated polyclonal antibody specific for lactoferrin, which is recognized by a streptavidin-peroxidase conjugate. Absorbance is read at OD 450 nm. Lactoferrin was expressed as μg/g feces.
The stool samples were prepared and analyzed for calprotectin. The supernatant was collected and frozen at -20°C. The supernatants were thawed and calprotectin was analyzed with the quantitative calprotectin ELISA and read at OD 450 nm. Calprotectin was expressed as μg/g feces.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| 97-0549B | Experimental | Dietary Supplement: probiotics (antibiophilus(Lactobacillus casei), bio-three) |
Who may qualify
- Ages
- 3 months to 10 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child
Key inclusion criteria (2 listed)
- Diarrhea
- constipation
Key exclusion criteria (4 listed)
- Shock
- Sepsis
- Past history with GI tract surgery
- Immunodeficiency
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| probiotics (antibiophilus(Lactobacillus casei), bio-three)probiotics (antibiophilus(Lactobacillus casei), bio-three) 4x 10^8CFU/day | Dietary supplement | 97-0549B |
Primary outcome
Duration of diarrhea, number of stool passage, bacterial culture for intestinal or cytokine
Time frame: within 4 weeks
1 secondary outcome
body weight change, appetite and daily intake, Fecal IgA, lactoferrin and calprotectin levels
Time frame: Within first two weeks
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 Jul 2012.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Chien-Chang Chen, MD principal investigator
Pediatric Department, Chang Gung Memorial Hospital, Taiwan
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing probiotics (antibiophilus(Lactobacillus casei), bio-three) in people with Diarrhea and Constipation, run by Chang Gung Memorial Hospital at 1 site in Taiwan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 17 Jul 2012. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Taiwan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Duration of diarrhea, number of stool passage, bacterial culture for intestinal or cytokine (time frame: within 4 weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Jul 2012.