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Abstract Title:

Prebiotic Treatment in People With Schizophrenia.

Abstract Source:

J Clin Psychopharmacol. 2024 Sep-Oct 01;44(5):457-461. Epub 2024 Aug 16. PMID: 39146178

Abstract Author(s):

Robert W Buchanan, Anne E Werkheiser, Hanna Michel, Jennifer Zaranski, Matthew Glassman, Heather A Adams, Gopal Vyas, Frank Blatt, Nageswara R Pilli, Yezhi Pan, Shuo Chen, Claire M Fraser, Deanna L Kelly, Maureen A Kane

Article Affiliation:

Robert W Buchanan

Abstract:

BACKGROUND: Preliminary evidence suggests that people with schizophrenia have decreased relative abundance of butyrate-producing bacteria in the gut microbiota. Butyrate plays a critical role in maintaining the integrity of the gut-blood barrier and has a number of anti-inflammatory effects. This proof-of-concept study was designed to assess whether the addition of the oligofructose-enriched inulin (OEI) prebiotic: Prebiotin could increase the production of butyrate.

METHODS: Twenty-seven people who met the criteria for either Diagnostic and Statistical Manual of Mental Disorders, 5th Edition, schizophrenia or schizoaffective disorder were entered into a 10-day, double-blind, placebo-controlled, randomized clinical trial. The study was conducted on an inpatient unit to standardize the participant diet and environment. Participants were randomized to either OEI (4 g, 3 times a day) or a placebo (4 g of maltodextrin, 3 times a day). In order to assess the effect of OEI treatment on butyrate levels, participants underwent pretreatment and posttreatment OEI challenges. The primary outcome measure was relative change in postchallenge plasma butyrate levels after 10 days of OEI treatment.

RESULTS: In both the intent-to-treat and completer analyses, OEI treatment was associated with a greater number of participants who met the OEI challenge responder criteria than those treated with placebo. OEI treatment was also associated with an increase in baseline butyrate levels (effect size for the group difference in the change of baseline butyrate levels was 0.58).

CONCLUSIONS: We were able to demonstrate that treatment with the prebiotic OEI selectively increased the level of plasma butyrate in people with schizophrenia.Trial registration:ClinicalTrials.gov identifier NCT03617783.

Study Type : Human Study

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