P34 Neurological Dysfunction Is Improved After Faecal Microbiota Transplantation in Rats With Bile Duct Ligated-Induced Chronic Liver Disease
Bibliographic record
Abstract
Background: Hepatic encephalopathy (HE) is a complex neuropsychiatric syndrome arising from chronic liver disease (CLD). The gut microbiota has been shown to influence neurological functions via various mediators such as cytokines and/or bacterial metabolites. Faecal matter transplantation (FMT) in patients with cirrhosis has revealed beneficial effects on behaviour yet many limitations of these studies render the results inconclusive. Purpose: The aim of this study was to explore the impact of FMT on gut microbiota and neuro behaviour in bile-duct ligated (BDL) rats. Method: Male Sprague-Dawley rats were randomly assigned to one of 3 groups; SHAM, BDL-VEH (vehicle) and BDL-FMT (who received FMT daily from pooled feaces from 10 SHAM rats). After 5 weeks, behaviour tests were performed to evaluate short- and long-term memory, anxiety and motor coordination. Plasmatic parameters including cytokines, short chain fatty acids (SCFA) and liver biomarkers were measured. Finally, feaces were collected for bacterial sequencing and SCFA measurement. Results: BDL-VEH developed a loss of short- and long-term memory and motor coordination compared to SHAM rats. However, neurological dysfunction was prevented in the BDL-FMT group. FMT impacted microbiota composition as the genera Bifidobacterium, Lactobacillus and Akkermansia significantly increased in both BDL groups, while Provotellaceae UCO-001 significantly increased only in SHAM and BDL-FMT rats. Clostridium Senso Stricto 1 significantly increased only in BDL-VEH compared to SHAMs. Plasma pro-inflammatory cytokines (TNF-α & IL-1β) increased in both BDL groups compared to SHAM and no difference in anti-inflammatory cytokine IL-10 was noted. Analysis of SCFA in plasma and feaces showed significant changes in propionate between both BDL groups. Plasma propionate significantly positively correlated with behavioural results. Conclusion: Our results demonstrate that FMT leads to improvement in memory and motor coordination in BDL rats. The microbiota profile was different between BDL-VEH and SHAM whereas FMT led to further microbiota alterations. BDL-FMT led to a novel specific microbiota profile which in turn protected the brain. The protective effect of plasma propionate needs to be further explored to define its beneficial impact on the brain during chronic liver disease. Disclosure of Interest: None.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".