A Randomized, Double-blind, Placebo-controlled Intervention Study to Assess the Safety and Tolerance Effect of Three Probiotic Strains in Infants
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 221
- 试验地点
- 2
- 主要终点
- Adverse Event and/or Serious Adverse Event
研究概览
简要总结
Study to evaluate the safety and tolerance of three probiotic bacteria intake by healthy infants. Participants are divided at random and unknown to the researchers, in four groups, three of which receive one of three probiotic bacteria while the fourth group receives placebo product.
详细描述
Subjects' parents or legal tutors will be contacted for voluntary participation and a written informed consent will be obtained.
The study visits will take place either in the hospital or primary health center.
During Visit 1, inclusion in- and exclusion criteria will be checked and information on demographic profile, subject characteristics, feeding option, relevant medical history, medication and nutritional supplements will be recorded. Weight and length and head circumference measurements of the infant will be made. The researcher will explain to the parents that during the first 2 weeks of participation in the study the infant must not intake any probiotic supplements (run-in ). Parents will be instructed to collect and send and/or store fecal and urine samples before starting the study. In addition they will be instructed to collect and send and/or store fecal and urine samples after the initial run-in period (2 weeks), after the product intake period (8 weeks) and after the final wash out period (2 weeks).
During Visit 2, subjects will be randomly allocated to receive either one of the test products or the placebo. Body weight and length will be measure. The researcher will review with the parents the study diary in detail, how to record data on gastrointestinal tolerance, stool frequency and stool characteristics, respiratory symptoms, diagnosed infections, sleeping and crying habits, changes in sleeping pattern, fever episodes, unscheduled visits resulting from suspected infection or a health problem and antibiotic prescription. The researcher will explain the procedure of administering the study product to the infant and anticipated phone calls. The parents will be instructed to start intake of the product as soon as possible after the collection of fecal and urine samples.
During product intake period (8 weeks) subject's parents will be called weekly by someone from the Study Team (Phone call 1, 2, 3, 4, 5, 6, 7). During the phone call relevant data related to possible Adverse Events (AEs) or Serious Adverse Events (SAEs) will be collected. Parents will be asked about infant's well-being (fever episodes, rashes, diarrhea, visits to the doctor, antibiotic prescription, etc.). Issues regarding diary completion, if any, will be discussed. During the Phone call 7 parents will be instructed to collect and send and/or store fecal and urine samples in one of the days prior to the third visit.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 盲法
- Triple (Participant, Care Provider, Investigator)
入排标准
- 年龄范围
- 3 Months 至 12 Months（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Healthy term infants between 3-12 months old
- •Written informed consent from at least one parent or the legal tutor.
排除标准
- •Short bowel syndrome or any GI surgery.
- •Impaired intestinal epithelial barrier (e.g. diarrheal illness, intestinal inflammation).
- •Metabolic disorders (diabetes, lactose intolerance).
- •Immunodeficiency.
- •Heart failure and cardiac medical history (e.g. artificial heart valve, medical history of infectious endocarditis, cardiac malformation, rheumatic fever).
- •Surgery within one month prior to inclusion (Visit 1/ week 0).
- •Antibiotic prescription 1 week before inclusion (Visit 1/ week 0) and during run-in period (Visit 2/ week 2).
- •Investigator's uncertainty about the willingness or ability of the infant's parents to comply with the protocol requirements.
- •Participation in any other clinical trial within two weeks prior to entry into the study.
结局指标
主要结局
Adverse Event and/or Serious Adverse Event
时间窗: 10 weeks
Adverse Event and/or Serious Adverse Event will be recorded daily by parents and notified to investigator within 24hrs., in particular gastro-intestinal symptoms, fever and rashes.
Fecal characteristics
时间窗: 10 weeks
Fecal characteristics (stool frequency, stool consistency, stool amount and stool color) will be recorded daily by parents according to the "Amsterdam scale" and notified weekly to investigators.
Use of medication
时间窗: 12 weeks
Medication used (antibiotics, etc) will be recorded daily by parents and notified weekly to investigators.
Safety and tolerance will be evaluated according to infant growth (weight, height and head circumference)
时间窗: 12 weeks
growth will be evaluated considering weight, height and head circumference, at four different time points during study: 1st measure will be at screening visit (visit 1/week 0), 2nd measure will be after the run-in period and before starting intervention (visit 2/ week 2), 3rd measure will be after the eight weeks of intervention (visit 3/ week 10) and the 4th measure will be two weeks later (visit 4/week 12).
次要结局
- Urine concentration of D-lactic acid.(12 weeks)
- Immune compounds in fecal samples(8 weeks)
- Changes in sleep and crying patterns(10 weeks)
- Composition of fecal microbiota(8 weeks)