Lactobacillus GG in prevention of gastrointestinal and respiratory tract infections in healthy children: Randomised, double-blind, placebo-controlled study

ISRCTN ISRCTN16959643
DOI https://doi.org/10.1186/ISRCTN16959643
Secondary identifying numbers N/A
Submission date
29/01/2008
Registration date
11/04/2008
Last edited
02/12/2010
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Infections and Infestations
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English Summary

Not provided at time of registration

Contact information

Dr Iva Hojsak
Scientific

Children's Hospital Zagreb
Klaiceva 16
Zagreb
10000
Croatia

Study information

Study designRandomized, double-blind, placebo controlled study
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Not specified
Study typePrevention
Participant information sheet Not available in web format, please use the contact details below to request a patient information sheet
Scientific title
Study hypothesisProbiotics are defined as live microorganisms which confer a beneficial health effect on a human host.
The most commonly used probiotics are bacteria of genera Lactobacillus or Bifidobacterium. A probiotic preparation must contain a certain minimum number of Colony-Forming Units (CFU) per dose. Doses used in therapeutic and preventive trials vary (106 to 109 CFUs). There is an increasing number of studies on beneficial effects of probiotics in treatment of acute infectious diarrhoea and prevention of antibiotic associated diarrhoea. However, the role of probiotics in prevention of nosocomial diarrhoea is still controversial.

Probiotics can also be used as preventive measure in gastrointestinal and respiratory tract infection, and although currently randomised controlled trials show a modest effect, future large, prospective studies are necessary.

Study hypothesis:
Use of probiotics can effectively reduce the risk of nosocomial gastrointestinal and respiratory infections in healthy children in kindergarten.
Ethics approval(s)Children's Hospital Ethics Committee Zagreb, Klaiceva 16, 10000 Zagreb, Croatia. Date of approval: 22/02/2007 (ref: 01-57/3-1-07)
ConditionGastrointestinal and respiratory tract infections in children
InterventionAll children at kindergarten whose parents have signed an inform consent, would be randomly assigned into one of two following groups:
1.Group A will receive LGG at a dose 10^10 CFU per day in fermented milk product for three months
2.Group B will receive placebo (fermented milk product) daily for three months
Intervention typeOther
Primary outcome measureThe following will be assessed after 3 months of intervention:
1. Rate of gastrointestinal tract infections including diarrhea (defined as 3 or more loose or watery stools in 24 hours) and vomiting
2. Rate of upper respiratory tract infections including rhinitis, pharyngitis, otitis, common cold and sinusitis
3. Rate of lower respiratory tract infections including pneumonia, bronchitis and bronciolitis (diagnosis by physician)
4. Duration of gastrointestinal and respiratory tract infections
Secondary outcome measuresThe following will be assessed after 3 months of interventions:
1. In participants with gastrointestinal tract infections:
1.1. Duration of symptoms
1.2. Number of stools or vomiting episodes
1.3. Number of infections with determined infective cause: Nature of infective etiology

2. In participants with respiratory tract infections:
2.1. Duration of symptoms (cough, fever)
2.2. Severity of infection (mild, moderate, severe)
2.3. Need for antibiotics
2.4. Number of infections with determined infective cause: Nature of infective etiology
Overall study start date20/11/2007
Overall study end date20/02/2008

Eligibility

Participant type(s)Patient
Age groupChild
Lower age limit12 Months
Upper age limit7 Years
SexBoth
Target number of participants300
Participant inclusion criteriaAll children attending day care at two kindergartens located in the Zagreb city centre with approximately 300 children, age from 12 months to 7 years.
Participant exclusion criteria1. Immunodeficiency
2. Cow's milk allergy (probiotics will be given in fermented cow's milk product)
3. Receiving infant formula containing probiotics and/or prebiotics at the time of enrolment
4. Receiving probiotic and/or prebiotic products prior to enrolment (7 days prior to hospitalization)
5. Neoplasms
6. Chronic disorders
Recruitment start date20/11/2007
Recruitment end date20/02/2008

Locations

Countries of recruitment

  • Croatia

Study participating centre

Children's Hospital Zagreb
Zagreb
10000
Croatia

Sponsor information

Dukat (Croatia)
Industry

M Cavica 9
Zagreb
10000
Croatia

Website http://www.dukat.hr
ROR logo "ROR" https://ror.org/05ceh6345

Funders

Funder type

Hospital/treatment centre

Children's Hospital Zagreb (Croatia)

No information available

Dukat (Croatian milk company) will donate probiotics and fermented milk products

No information available

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
Publication and dissemination planNot provided at time of registration
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 01/06/2010 Yes No