Immunomodulatory Effect of Probiotics on the Immunogenicity of Anti-SARS-CoV-2 Vaccines
31. mai 2026 oppdatert av: 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.
Studieoversikt
Status
Fullført
Forhold
Intervensjon / Behandling
Detaljert 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.
Studietype
Intervensjonell
Registrering (Faktiske)
138
Fase
- Ikke aktuelt
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiesteder
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Taipei, Taiwan
- Taipei Medical University Hospital.
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Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
- Voksen
- Eldre voksen
Tar imot friske 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
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Forebygging
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Enkelt
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
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Eksperimentell: 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 navn:
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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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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
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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Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Sponsor
Samarbeidspartnere
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart (Faktiske)
13. oktober 2021
Primær fullføring (Faktiske)
31. mars 2022
Studiet fullført (Faktiske)
31. mars 2022
Datoer for studieregistrering
Først innsendt
21. mai 2026
Først innsendt som oppfylte QC-kriteriene
21. mai 2026
Først lagt ut (Faktiske)
28. mai 2026
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
3. juni 2026
Siste oppdatering sendt inn som oppfylte QC-kriteriene
31. mai 2026
Sist bekreftet
1. mai 2026
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
- Luftveisinfeksjoner
- Infeksjoner
- RNA-virusinfeksjoner
- Virussykdommer
- Sykdommer i luftveiene
- Lungesykdommer
- Lungebetennelse, viral
- Lungebetennelse
- Coronavirus-infeksjoner
- Coronaviridae-infeksjoner
- Nidovirales infeksjoner
- Covid-19
- Kosttilskudd
- Mat
- Kosthold, mat og ernæring
- Fysiologiske fenomener
- Mat og drikke
- Probiotika
- Lacteol
Andre studie-ID-numre
- N202109037
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
NEI
Legemiddel- og utstyrsinformasjon, studiedokumenter
Studerer et amerikansk FDA-regulert medikamentprodukt
Nei
Studerer et amerikansk FDA-regulert enhetsprodukt
Nei
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .