Effects of Oral Probiotic Supplementation on the Clinical Status of Very-low-birth-weight Preterm Neonates.

Necrotizing Enterocolitis Clinical Trial

Official title:

Effects of Oral Probiotic Supplementation on the Clinical Status of Very-low-birth-weight Preterm Neonates. Multi-centre, Randomised, Double-blind, Placebo-controlled Clinical Study.

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02073214
• Other study ID #: PB-DM/SBK-NEC-01/11
• Status: Completed
• Phase: N/A
• First received: February 25, 2014
• Last updated: February 25, 2014
• Start date: April 2012
• Est. completion date: December 2013

Study information

• Verified date: February 2014
• Source: IBSS Biomed S.A.
• Contact: n/a
• Is FDA regulated: No
• Health authority: Poland: Ethics Committee
• Study type: Interventional

Clinical Trial Summary

The purpose of this study was to evaluate the safety of a probiotic foodstuff and its influence on emergence and development of natural intestinal flora and the clinical status of premature very low birth weight neonates. The study was also intended to investigate reduction of colonisation by pathogenic bacteria and to estimate the incidence of gastrointestinal disorders.

Probotic bacteria contained in the investigational product administered directly after birth are beneficial for the development of normal gut microflora and can prevent or significantly limit gastrointestinal colonisation by pathogenic bacteria and the development of pathogenic flora in a hospital setting. Permanent colonisation with commensal flora in very early life improves gastrointestinal function in premature neonates by reducing the onset of or by decreasing the severity of the signs and symptoms of feeding intolerance and generalised bacterial infections, including sepsis and necrotizing enterocolitis.

Description:

Neonates defined as having very low birth weight (VLBW) are found to have a number of conditions typical for this period of life and body weight at birth. Perinatal and neonatal infections are relatively common in these babies, which can be attributed to their immunological immaturity (immature cellular or humoral immune responsiveness) and insufficient gastrointestinal tract colonisation by non-pathogenic bacteria, the presence of which depends on the type of delivery, feeding and environment in which the neonates are nursed.

Neonates admitted to neonatal intensive care units, particularly low birth-weight neonates born prematurely or with congenital disorders, are most susceptible. Probiotics administered to neonates are known to compete with pathogenic bacteria for essential nutrients and receptor sites, and to enzymatically modify toxin receptors. They are also known to produce antimicrobial substances, acidify the intestinal environment and stimulate the immune system, helping it reach full maturity. These are the reasons why intestinal microflora normalisation with the help of probiotics can be beneficial for VLBW neonates, especially those requiring intensive medical care.

In a review of clinical studies on the use of probiotics in NEC prevention in neonates, demonstrated beneficial effects of probiotics in a group of VLBW neonates compared to placebo. There are scientific reasons to believe that probiotics administered to neonates modulate the composition of the gut flora colonising the intestinal tract and are beneficial for the development and maturity of the immune system. In hitherto clinical studies, specific probiotic strains were found to provide beneficial effects by limiting infections in the neonatal period, including necrotizing enterocolitis in VLBW neonates.

The purpose of this multicentre, randomized study was to investigate whether the use of a probiotic preparation containing Lactobacillus rhamnosus KL53A and Bifidobacterium breve PB04 influence on emergence and development of natural intestinal flora and the clinical status of premature very low birth weight neonates and reduction of colonisation by pathogenic bacteria and to estimate the incidence of gastrointestinal disorders. The study took place between April 2012 and July 2013 in eight study centres in Poland. It was conducted in accordance with the original protocol and according to ICH-GCP requirements.

The duration of subject's participation in the trial was approximately 49 days, or until they were withdrawn or discharged from the hospital, whichever came earlier, prior to day 49.

As the trial did not concern medicinal product but the foodstuff (food for special medical purpose) it did not require Authority approval but was only subject to relevant Ethics Committee approval.

The study only included neonates who fulfilled the eligibility criteria, after obtaining an informed consent from their parents/legal guardians, to have their baby enrolled in the study and randomized into one of the two study groups: probiotic or placebo. Investigational product were administered during the first 48h of life, at the time of the enteral feed.

Efficacy evaluation was to determine whether the investigational product positively influences the emergence and progressive development of the natural gut flora and the clinical status of preterm VLBW neonates. As part of the efficacy evaluation, it was also examined whether the probiotic agent has the capacity to inhibit pathogenic colonisation and to reduce the incidence of gastrointestinal disorders, as compared to placebo.

Safety was evaluated by determining whether investigational product in VLBW preterm neonates increases AE/SAE incidence and influences the type of adverse events and serious adverse events as compared to placebo.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 182
• Est. completion date: December 2013
• Est. primary completion date: July 2013
• Accepts healthy volunteers: No
• Gender: Both
• Age group: N/A to 48 Hours

Eligibility

Inclusion Criteria:

1. Infants = 750 g and = 1800 g at birth

2. Gestational age of = 34 weeks

3. Mother's age = 18 years

4. Possibility of feeding by enteral route

5. Possibility of enrolment = 48 hours of age

6. Caucasian race

7. Parent-legal guardian informed consent obtained in writing

Exclusion Criteria:

1. Infants < 750 g and > 1800 g at birth

2. Gestational age of > 34 weeks

3. Mother's age < 18 years

4. Contraindicated to enteral nutrition within the first 48 hours of life

5. Birth asphyxia (Apgar score: 0-3)

6. Major congenital abnormalities, including gastrointestinal abnormalities

7. Severe clinical condition / disorders which the Investigator considers a contraindication to study participation, including the presence of at least 3 out of 4 of the following symptoms:

1. necessity of mechanical ventilation and FiO2 more than 0.6 elevation to maintain blood oxygen saturation within 88-93%,

2. metabolic acidosis, pH less than 7.20 and BE more than (-10),

3. necessity of vasopressor (antihypotensive) agents to maintain proper arterial blood pressure,

4. signs of damage to at least one vital organ (liver, kidneys, gastrointestinal tract, adrenal glands).

8. Administration of other probiotic preparations

9. Enrolment in any other clinical trial throughout the study period

10. Lack of parent-legal guardian informed consent

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Supportive Care

Related Conditions & MeSH terms

• Birth Weight
• Enterocolitis
• Enterocolitis, Necrotizing
• Infant, Very Low Birth Weight
• Late Onset Neonatal Sepsis
• Necrotizing Enterocolitis

Intervention

Other:
• Probiotic
Standard treatment plus probiotic
• Placebo
Standard treatment plus placebo

Locations

Country	Name	City	State
n/a

Sponsors (2)

Lead Sponsor	Collaborator
IBSS Biomed S.A.	Ministry of Science and Higher Education, Poland

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Gastrointestinal tract colonisation	Bacteriological tests involved quantitative and qualitative assessment of neonatal gut flora during clinical follow-up. Bacterial populations of Lactobacillus and Bifidobacterium as well as pathogenic bacteria were assesed.; Stool samples were collected at 7-day intervals (±2 days) in the period of investigational product intake, and on Day 7 (±2 days) after the last dose of the investigational product.	Assesed on days 1, 7, 14, 21, 28, 35, 42 and 49 (assesed weekly within eight weeks)	Yes
Primary	Feeding intolerance episodes (including: gastric residuals, vomiting, regurgitation of food, abdominal distension, abdominal rigidity, gut motility disorders)	Clinical parameters were evaluated throughout the period of care according to standard neonatal care procedures.	Assesed on a daily basis (from 1 to 42 and on day 49)	Yes
Primary	Incidence and type of adverse events and serious adverse events with special regard to sepsis caused by bacteria contained in investigational product.	Safety was evaluated by determining whether investigational product in VLBW preterm neonates increases AE/SAE incidence and influences the type of adverse events and serious adverse events as compared to placebo with special regard to sepsis caused by bacteria contained in investigational product .	Assesed on a daily basis (from 1 to 42 and on day 49)	Yes
Secondary	Late onset sepsis caused by Gram positive or Gram negative bacteria	Sepsis was confirmed by positive blood cultures. Clinical parameters were evaluated throughout the period of care according to standard neonatal care procedures.	Assesed on a daily basis (from 1 to 42 and on day 49)	Yes
Secondary	Gastrointestinal perforation	Clinical parameters were evaluated throughout the period of care according to standard neonatal care procedures.	Assesed on a daily basis (from 1 to 42 and on day 49)	Yes
Secondary	Duration of total parenteral nutrition (days)	Duration of total parenteral nutrition (hyperalimentation) was evaluated until full enteral nutrition is restored.	Assesed on a daily basis (from 1 to 42 and on day 49)	Yes
Secondary	Duration (days) of absence of enteral nutrition due to gastrointestinal disorders	Clinical parameters were evaluated throughout the period of care according to standard neonatal care procedures.	Assesed on a daily basis (from 1 to 42 and on day 49)	Yes
Secondary	Duration (days) of absence of enteral nutrition for reasons other than gastrointestinal disorders	Clinical parameters were evaluated throughout the period of care according to standard neonatal care procedures.	Assesed on a daily basis (from 1 to 42 and on day 49)	Yes
Secondary	Weight, length and head circumference	Weight, length and head circumference were evaluated throughout the period of care according to standard neonatal care procedures.	Weight was measured once daily, head circumference was measured once a week, and body length was measured on Day 1 and on Day 7 (±2 days) from the last dose (or until the patient was discharged or withdrawn from the study)	Yes
Secondary	NEC - intensity and severity	Severity of neonatal necrotizing enterocolitis was determined according Bell's criteria. Clinical parameters were evaluated throughout the period of care according to standard neonatal care procedures.	Assesed on a daily basis (from 1 to 42 and on day 49)	Yes
Secondary	Mortality rate, with a focus on deaths attributed to NEC and sepsis	Clinical parameters were evaluated throughout the period of care according to standard neonatal care procedures.	Assesed on a daily basis (from 1 to 42 and on day 49)	Yes
Secondary	Duration of hospitalization (days) (until discharge)	Duration of hospitalization was investigated from the date of patient enrolment until discharge.	Assesed on a daily basis (from 1 to 42 and on day 49)	Yes