Related Experiment Video
Updated: May 4, 2026
08:02
In Vivo Augmentation of Gut-Homing Regulatory T Cell Induction
Published on: January 22, 2020
5.4K
Dietary Inulin to Improve SARS-CoV-2 Vaccine Response in Kidney Transplant Recipients: The RIVASTIM-Inulin Randomised
Julian Singer1,2, Matthew J Tunbridge3, Bree Shi2
1Department of Renal Medicine, Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia.
Vaccines
|June 27, 2024
Summary
Prebiotic inulin supplementation in kidney transplant recipients increased beneficial gut bacteria but did not enhance SARS-CoV-2 vaccine neutralization. Further research is needed to optimize this strategy for improving vaccine responses in immunocompromised individuals.
Area of Science:
- Immunology
- Microbiology
- Transplantation
Background:
- Kidney transplant recipients (KTRs) face heightened risks from SARS-CoV-2 infection, with suboptimal vaccine responses.
- Gut dysbiosis in KTRs may impair vaccine immunogenicity.
- Gut microbiota, particularly short-chain fatty acid (SCFA)-producing bacteria like Bifidobacterium, influences vaccine efficacy.
Purpose of the Study:
- To investigate the feasibility and impact of prebiotic inulin supplementation on vaccine response in KTRs.
- To assess if inulin corrects gut dysbiosis and enhances immunity after a third SARS-CoV-2 mRNA vaccine.
Main Methods:
- A randomized, double-blind, placebo-controlled trial involving 72 KTRs.
- Inulin or placebo supplementation for 4 weeks before and after a third SARS-CoV-2 mRNA vaccination.
- Analysis of gut microbiota composition via 16S rRNA sequencing and assessment of SARS-CoV-2 neutralization.
Main Results:
- Inulin supplementation was feasible, tolerable, and safe in KTRs.
- Inulin increased the abundance of gut Bifidobacterium.
- No significant increase in in vitro SARS-CoV-2 neutralization was observed at 4 weeks post-vaccination.
Conclusions:
- Dietary fibre supplementation is a safe strategy for KTRs.
- Inulin modulates gut microbiota composition, increasing Bifidobacterium.
- Prebiotic supplementation shows potential as an adjuvant for vaccine-induced immunity, requiring further investigation.
More Related Videos
Related Concept Videos
01:11Bioavailability Study Design: Single Versus Multiple Dose Studies
383
Bioavailability studies are essential for understanding how a drug is absorbed, distributed, metabolized, and excreted in the body. These studies assess the extent and rate at which the active pharmaceutical agent becomes available at the site of action. The design of bioavailability studies can involve single-dose or multiple-dose regimens, each with distinct advantages and limitations.Single-dose studies are the preferred approach due to their simplicity and reduced drug exposure for...
383
01:15Bioavailability Study Design: Healthy Subjects Versus Patients
248
Bioavailability studies are essential for evaluating a drug's therapeutic efficacy and understanding its absorption patterns under various physiological conditions. Conducting such studies on target patient populations provides more relevant data by simulating real-world disease states. However, practical challenges often necessitate the use of young, healthy adult volunteers as study subjects.Patients may exhibit altered drug absorption patterns due to the effects of the disease itself,...
248