Effect of probiotics following antibiotic therapy
| ISRCTN | ISRCTN16359093 |
|---|---|
| DOI | https://doi.org/10.1186/ISRCTN16359093 |
| Protocol serial number | PPv1.0 |
| Sponsor | Cultech Ltd |
| Funder | Cultech Ltd (UK) |
- Submission date
- 25/06/2015
- Registration date
- 07/07/2015
- Last edited
- 06/07/2015
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Infections and Infestations
Plain English summary of protocol
Background and study aims
The human gut has been identified as one of the parts of the body that is most densely populated with bacteria (known collectively as the gut microbiota). Antibiotics are used to combat infections caused by harmful (pathogenic) bacteria. However, antibiotics can have a damaging effect on the gut microbiota and can lead to the development of bacteria that are resistant to antibiotics. Probiotics are live bacteria and yeasts that may be good for your health. This study will assess the effects of taking probiotics when taking antibiotics on the composition of the gut microbiota and whether there are any changes in the incidence of antibiotic-resistant organisms.
Who can participate?
Children aged 3-18 years with infections requiring antibiotic treatment.
What does the study involve?
Participants will be randomly allocated to take either probiotics or placebo (dummy) tablets for 30 days and provide stool, urine and saliva samples at the start of the study, upon completion of the antibiotic course and after 30 days (at the end of the study). Parents/guardians will need to complete a diet and physical activity questionnaire at the start and end of the study and also record children's weekly health diaries.
What are the possible benefits and risks of participating?
Probiotic supplementation is intended to prevent disruption of the gut microbiota. There are no known risks to participants taking part in this study.
Where is the study run from?
Children's Health Centre Juvenalia Ltd, Dunajska Streda, Slovakia.
Institute of Medical Chemistry, Comenius University, Bratislava, Slovakia.
When is the study starting and how long is it expected to run for?
From November 2014 to December 2015.
Who is funding the study?
Cultech Ltd, Port Talbot, UK.
Who is the main contact?
Associate Professor Jana Muchova.
jana.muchova@fmed.uniba.sk
Contact information
Scientific
Institute of Medical Chemistry, Biochemistry and Clinical Biochemistry
Faculty of Medicine
Comenius University
Bratislava
81372
Slovakia
 ORCID ID |
0000-0001-7419-6913 |
|---|
Study information
| Primary study design | Interventional |
|---|---|
| Study design | Randomised double-blind placebo-controlled single-centre study |
| Secondary study design | Randomised controlled trial |
| Study type | Participant information sheet |
| Scientific title | A study to Investigate the impact of probiotics on children's gut microbiota following antibiotic therapy |
| Study acronym | PROCHANT |
| Study objectives | This study aims to investigate the impact of supplementation with Lab4 probiotics on the gut microbiota of 3 to 18 year olds when administered in conjunction with antibiotic therapy. |
| Ethics approval(s) | Ethical committee of Trnava Self-Governing Region, 22/01/2015 |
| Health condition(s) or problem(s) studied | Oral antibiotic therapy |
| Intervention | Participants randomised to active or placebo group will take study products orally once daily for 30 days: 1. The active will contain Lab4 probiotic consortium (Lactobacillus acidophilus CUL60, Lactobacillus acidophilus CUL21, Bifidobacterium bifidum CUL20 and Bifidobacterium animalis subsp. lactis CUL34) at 2.5x10^10 CFU per day 2. The placebo control will be an identical looking tablet containing maltodextrin Both interventions will be prepared by Cultech Ltd, Port Talbot, UK |
| Intervention type | Supplement |
| Primary outcome measure(s) |
1. Changes in the composition and diversity of gut microbiota |
| Key secondary outcome measure(s) |
1. Impact of probiotics on wellbeing (changes in bowel habits, blood pressure, etc) |
| Completion date | 18/12/2015 |
Eligibility
| Participant type(s) | Patient |
|---|---|
| Age group | Child |
| Lower age limit | 3 Years |
| Upper age limit | 18 Years |
| Sex | All |
| Target sample size at registration | 78 |
| Key inclusion criteria | 1. Children aged 3 to 18 years old of either sex with infections requiring treatment by one of the following classes of antibiotics: cephalosporins; clarithromycin and amoxicllins/clavulanic acids 2. Participants willing to provide saliva, urine and stool samples 3. Parents/guardians willing to give written informed consent and information on children's daily bowel habits |
| Key exclusion criteria | 1. Participants whose parents are unable/unwilling to give written formal consent 2. Participants not prepared to provide saliva, urine and stool samples 3. Participants who took antibiotics in the 4 weeks prior to enrolment 4. Participants sensitive to xylitol or sorbitol |
| Date of first enrolment | 09/03/2015 |
| Date of final enrolment | 30/10/2015 |
Locations
Countries of recruitment
- Slovakia
Study participating centre
Dunajska Streda
92901
Slovakia
Results and Publications
| Individual participant data (IPD) Intention to share | No |
|---|---|
| IPD sharing plan summary | Not expected to be made available |
| IPD sharing plan |
Study outputs
| Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
|---|---|---|---|---|---|
| Participant information sheet | Participant information sheet | 11/11/2025 | 11/11/2025 | No | Yes |
