Immunomodulatory Effect of Probiotics on the Immunogenicity of Anti-SARS-CoV-2 Vaccines
31. maj 2026 opdateret af: Grape King Bio Ltd.
A Prospective Study to Determine the Immunomodulatory Effect of Probiotics on the Immunogenicity of Anti-SARS-CoV-2 Vaccine Recipients Study.
This study aims to evaluate whether oral probiotic supplementation can modulate the immune response induced by COVID-19 vaccination.
Specifically, the study will assess the effects of probiotics on vaccine-induced antibody responses and cellular immune responses, and explore whether probiotics may enhance or accelerate immunity and reduce vaccine-related adverse effects.
A total of 140 participants are planned to be enrolled.
Studieoversigt
Status
Afsluttet
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
Large-scale clinical trials have demonstrated that COVID-19 vaccines effectively reduce the incidence of COVID-19, as well as the risk of severe disease and mortality. These protective effects are primarily mediated through vaccine-induced immune responses, including both humoral immunity (antibody production) and cellular immunity.
Probiotics are widely recognized for their potential health benefits and are commonly consumed in foods such as yogurt. Emerging evidence suggests that probiotic supplementation may enhance immune responses to vaccination, as demonstrated in studies involving influenza vaccines.
This study is designed to investigate whether oral probiotic supplementation can modulate the immune response to COVID-19 vaccination. The study will evaluate both antibody responses and cellular immune responses following vaccination, and assess whether probiotics can enhance or accelerate the development of vaccine-induced immunity. In addition, the study will explore whether probiotic supplementation may reduce vaccine-related adverse effects.
A total of 140 participants are planned to be enrolled in this study.
Undersøgelsestype
Interventionel
Tilmelding (Faktiske)
138
Fase
- Ikke anvendelig
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
-
-
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Taipei, Taiwan
- Taipei Medical University Hospital.
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Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Ja
Beskrivelse
Inclusion Criteria:
- Male or female subject ≥ 20 to ≤ 65 years of age at the time signing informed consent form.
- Body weight ≥50 kgs
- Must be scheduling to receive a BNT162b2 mRNA COVID-19 vaccine
- Being able to comply with the study protocol
- Being able to independently provide written informed consent
Exclusion Criteria:
- Taking antibiotic at enrollment
- Taking immunomodulatory (e.g., steroid) or anti-histamine drugs
- Took pre- or probiotics within the past 30 days
- Being to expected to take other probiotic supplement during the study period
- Being expected to take antibiotic during the study period
- A history of hypersensitivity or severe allergic reaction to any components of the probiotics or placebo supplement
- Pregnant or breastfeeding
- Having a severe immunocompromised disorder (e.g. HIV infection)
- Solid organ or bone marrow transplant recipients
- Major gastrointestinal surgery within 3 months before enrollment
- Having severe active gastrointestinal conditions, including inflammatory bowel disease or diverticulitis
- No self-reported symptoms of an upper airway infection with the past 2 weeks
- A history of SARS-CoV-2 infection
- Previously participated in investigational study involving SARS-CoV-2 vaccines or therapies
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Enkelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
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Eksperimentel: Probiotic Group
Participants will receive oral probiotic capsules containing Lactobacillus spp.
once daily for 4-5 weeks following COVID-19 vaccination.
The intervention is administered to evaluate the immunomodulatory effects of probiotics on vaccine-induced humoral and cellular immune responses.
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Oral probiotic capsules containing Lactobacillus spp.
administered once daily for 4-5 weeks following COVID-19 vaccination to evaluate immunomodulatory effects on vaccine-induced immune responses.
Andre navne:
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Placebo komparator: Placebo Group
Participants will receive matching placebo capsules containing microcrystalline cellulose once daily for 4-5 weeks following COVID-19 vaccination.
The placebo is identical in appearance, packaging, and administration schedule to the probiotic capsules.
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Matching placebo capsules containing microcrystalline cellulose administered once daily for 4-5 weeks following COVID-19 vaccination.
The placebo is identical in appearance, packaging, and schedule to the probiotic capsules.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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SARS-CoV-2 spike protein-specific IgG antibody level
Tidsramme: Baseline (Day 0-7 before vaccination), Day 14 (±4 days), and Day 28 (±4 days) after first dose of BNT162b2 vaccination
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Change in SARS-CoV-2 spike protein-specific IgG antibody levels following COVID-19 vaccination between probiotic and placebo groups.
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Baseline (Day 0-7 before vaccination), Day 14 (±4 days), and Day 28 (±4 days) after first dose of BNT162b2 vaccination
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SARS-CoV-2-specific T cell immune response at Day 14 after vaccination.
Tidsramme: Baseline and Day 14 (±4 days) after vaccination
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Assessment of vaccine-induced cellular immune response measured by antigen-specific T cell activation between probiotic and placebo groups.
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Baseline and Day 14 (±4 days) after vaccination
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Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Sponsor
Samarbejdspartnere
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart (Faktiske)
13. oktober 2021
Primær færdiggørelse (Faktiske)
31. marts 2022
Studieafslutning (Faktiske)
31. marts 2022
Datoer for studieregistrering
Først indsendt
21. maj 2026
Først indsendt, der opfyldte QC-kriterier
21. maj 2026
Først opslået (Faktiske)
28. maj 2026
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
3. juni 2026
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
31. maj 2026
Sidst verificeret
1. maj 2026
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
- Luftvejsinfektioner
- Infektioner
- RNA-virusinfektioner
- Virussygdomme
- Luftvejssygdomme
- Lungesygdomme
- Lungebetændelse, viral
- Lungebetændelse
- Coronavirus infektioner
- Coronaviridae infektioner
- Nidovirales infektioner
- COVID-19
- Kosttilskud
- Mad
- Diæt, mad og ernæring
- Fysiologiske fænomener
- Mad og drikkevarer
- Probiotika
- Lacteol
Andre undersøgelses-id-numre
- N202109037
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
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