Report / Paper metadata
Gut microbial diversity at baseline conditions the clinical, microbiome, and metabolic response to paraprobiotic Lactiplantibacillus plantarum LRCC5282 in overweight adults.
A twelve-week trial of a paraprobiotic in overweight adults found no significant overall clinical difference between groups in its per-protocol analysis. A favourable result in a low-microbial-diversity subgroup is a lead for further research, not an overall weight-loss finding.
What did researchers test?
The multicentre trial randomly assigned 120 overweight adults to LP5282-P, a paraprobiotic derived from Lactiplantibacillus plantarum LRCC5282, or placebo. It used double blinding and ran for twelve weeks. The researchers also examined whether baseline gut microbial diversity was associated with the response.
What was the main result?
Across the overall per-protocol population, the abstract reports no significant between-group difference in any clinical outcome. This is the central qualification when reading the paper. A subgroup result should not replace the result for the analysed population as a whole.
What happened in the subgroup?
In participants classified as having low microbial diversity, the treatment was associated with lower body weight, body mass index and leptin levels, alongside changes in microbial composition and faecal metabolites. The high-diversity subgroup did not show a consistent response. These associations do not demonstrate that a particular microbial change caused weight loss.
What remains uncertain?
The abstract does not establish that the subgroup rule was specified before the results were examined, or provide all subgroup sizes, effect estimates and uncertainty ranges. Those details matter when judging whether a subgroup finding is reliable. A per-protocol analysis also does not necessarily preserve all the protection of initial random assignment. The authors propose microbial diversity as a variable for future trials; this is not a validated test for choosing treatment.
- Journal
- Gut microbes
- Kind
- Paper metadata
- Identifier
- PMID 42640624