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- Klinische proef NCT03049579
Immune System Stimulation by Probiotic Food Supplementation
Immune System Stimulation by Probiotic Food Supplementation: a Double-blind, Randomized, Controlled, Parallel-designed, Prospective Trial
The purpose of this study is to investigate the effects of a probiotic supplementation on adult volunteers with having caught the common cold more than 4 times in the past year. This study is a single center, double-blind, randomized, controlled, parallel-designed, prospective trial. Subjects received a probiotic drink containing probiotics of Lactobacillus paracasei (108 colony forming units (CFU)/ml), Lactobacilluscasei431® (108CFU/ml) and Lactobacillus fermentiumPCC® (106CFU/ml) or an identical placebo without probiotics for a 12-week study period.
The incidence of flue and cold during the study period were compared between study groups.
Blood and fecal samples were collected at baseline and at the end of the intervention. Fecal samples were collected for the secretory immunoglobulin A (sIgA) analysis. Blood sample was drawn for interferon γ (IFN-γ), interleukin 4 (IL-4), interleukin 10 (IL-10), immunoglobulin A (IgA), immunoglobulin G (IgG) and immunoglobulin M (IgM) analysis.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Studietype
Inschrijving (Werkelijk)
Fase
- Niet toepasbaar
Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- male or female between 25 to 45 years old;
- having caught the common cold or flu at least 4 to 6 times in the past calendar year;
- signed the informed consent forms before entering the study;
- fully understood the risks and potential benefits in participating this study.
Exclusion Criteria:
- were diagnosed with the decreased immunity caused by any diagnosed chronic illness;
- having any gastrointestinal illness with medical treatment at the time of being enrolled;
- having any diagnosed respiratory illness with similar symptoms as the common cold and flu;
- currently taking any pain killer drug;
- having received any vaccine for the upper respiratory infection within 6 months before enrollment;
- having received any purgative drug or digestion related drug within 2 weeks before enrollment;
- having taken any dairy product containing prebiotics and probiotics within 10 days before enrollment;
- currently taking any preventive drug for upper respiratory infection;
- having received any drug which has impact with the immune system such as antibiotics within 3 months before enrollment;
- alcoholic or addicted to any drug;
- pregnant or breastfeeding mothers;
- having participated another clinical trial within 3 months before enrollment.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Preventie
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Verdrievoudigen
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Experimenteel: Weiquan Yogurt with probiotics
Weiquan Yogurt with probiotics contained Lactobacillus paracasei (108 colony forming units (CFU)/ml), Lactobacillus casei 431® (108 CFU/ml) and Lactobacillus fermentum PCC® (106 CFU/ml)
|
150 ml daily consumption for a total of 12 weeks
|
|
Placebo-vergelijker: Weiquan Yogurt without probiotics
Weiquan Yogurt devoid of probiotics, but otherwise similar to the experimental product.
|
150 ml daily consumption for a total of 12 weeks
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Incidence of flue symptoms during the study
Tijdsspanne: end of week 12
|
Body temperature≥38.0℃,
and have one or more symptoms of cough, runny nose, throat pain, headache, muscle pain, weak feeling, hard to breath, chest pain or loss of appetite.
|
end of week 12
|
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Incidence of cold symptoms during the study
Tijdsspanne: end of week 12
|
Body temperature<38.0℃,
and have one or more symptoms of cough, runny nose, throat pain, headache, muscle pain, weak feeling, hard to breath, chest pain or loss of appetite.
|
end of week 12
|
|
Number of accumulated days of having cold symptoms during the study
Tijdsspanne: End of week 12
|
The total number of days of having one or more symptoms of cough, runny nose, throat pain, headache, muscle pain, weak feeling, hard to breath, chest pain or loss of appetite during the 12 week study period.
|
End of week 12
|
|
Serum IFN-γ concentration
Tijdsspanne: Baseline, end of week 12
|
Interferon gamma (unit: pg/ml)
|
Baseline, end of week 12
|
|
Serum IL-4 concentration
Tijdsspanne: Baseline, end of week 12
|
Interleukin 4 (unit: ng/ml)
|
Baseline, end of week 12
|
|
Serum IL-10 concentration
Tijdsspanne: Baseline, end of week 12
|
Interleukin 10 (unit: pg/ml)
|
Baseline, end of week 12
|
|
Serum IgA concentration
Tijdsspanne: Baseline, end of week 12
|
Immunoglobulin A (unit: g/L)
|
Baseline, end of week 12
|
|
Serum IgG concentration
Tijdsspanne: Baseline, end of week 12
|
Immunoglobulin G (unit: g/L)
|
Baseline, end of week 12
|
|
Serum IgM concentration
Tijdsspanne: Baseline, end of week 12
|
Immunoglobulin M (unit: g/L)
|
Baseline, end of week 12
|
|
Fecal sIgA concentration
Tijdsspanne: Baseline, end of week 12
|
Secretory Immunoglobulin A (unit: ng/ml)
|
Baseline, end of week 12
|
Medewerkers en onderzoekers
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Andere studie-ID-nummers
- 15-SC-09-WQ-002
Plan Individuele Deelnemersgegevens (IPD)
Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
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product vervaardigd in en geëxporteerd uit de V.S.
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