Ruminococcaceae is a family of obligate anaerobic, Gram-positive bacteria in the order Clostridiales (phylum Firmicutes) that represents one of the most important Butyrate-producing and fiber-degrading families in the human gut. Key genera include Faecalibacterium (including Faecalibacterium prausnitzii), Ruminococcus, Subdoligranulum, Oscillibacter, and Anaerotruncus.

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Why Ruminococcaceae Depletion Matters

Schizophrenia: Ruminococcaceae depletion correlates with negative symptoms and poorer functioning; FEP patients show the most pronounced loss.

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Why Ruminococcaceae Depletion Matters

MS: Depleted in MS patients; diet-responsive (Mediterranean diet enriches Ruminococcaceae).

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Why Ruminococcaceae Depletion Matters

Diet-responsive: Fiber-rich and Mediterranean diets selectively enrich Ruminococcaceae.

Contents1. Why Ruminococcaceae Depletion Matters2. Functional Significance3. Metal Connection4. Cross-References

Why Ruminococcaceae Depletion Matters#

Ruminococcaceae depletion is among the most consistent microbiome findings across disease states—paralleling and overlapping with Lachnospiraceae depletion.

Schizophrenia: Ruminococcaceae depletion correlates with negative symptoms and poorer functioning; FEP patients show the most pronounced loss.[1]Alterations of the Gut Microbiota in Patients with SchizophreniaLi Z, Tao X, Wang D et al. · 2024Open reference 1[2]Theleritis 2024 -- Association of gut dysbiosis with first-episode psychosis (Review)Christos Theleritis, Maria-Ioanna Stefanou, Marina Demetriou et al. · 2024Open reference 2

MS: Depleted in MS patients; diet-responsive (Mediterranean diet enriches Ruminococcaceae).[3]Feeding the gut microbiome: impact on multiple sclerosisMatteo Bronzini, Alessandro Maglione, Rachele Rosso et al. · 2023Open reference 3 IBD, PD, CRC, obesity: Consistently depleted across inflammatory and neurodegenerative conditions.

Diet-responsive: Fiber-rich and Mediterranean diets selectively enrich Ruminococcaceae.[4]The interplay between diet and the gut microbiome: implications for health and diseaseFiona C. Ross, Dhrati Patangia, Ghjuvan Grimaud et al. · 2024Open reference 4[5]Latorre-Pérez 2021 — The Spanish Gut Microbiome Reveals Links Between Microorganisms and Mediterranean DietAdriel Latorre-Pérez, Marta Hernández, Jose Ramón Iglesias et al. · 2021Open reference 5

Functional Significance#

Ruminococcaceae's depletion removes. butyrate—colonocyte fuel, HDAC inhibitor, tight junction and epithelial-barrier protector, Treg inducer. Fiber degradation—cellulose, xylan, and resistant starch breakdown (Saccharolytic Fermentation). Cross-Feeding—acetate→butyrate conversion for downstream SCFA production.

Colonization resistance—niche occupation preventing pathobiont expansion.

Metal Connection#

Butyrate production by Ruminococcaceae depends on iron-sulfur cluster enzymes (butyryl-CoA dehydrogenase). Heavy metal disruption of iron homeostasis impairs the family's core metabolic function.

Cross-References#

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References 5

Numbered by first appearance in the article, then reconciled with its declared source list.

  1. 1

    Li Z, Tao X, Wang D et al. (2024). Alterations of the Gut Microbiota in Patients with Schizophrenia. Frontiers in Psychiatry.

  2. 2

    Christos Theleritis, Maria-Ioanna Stefanou, Marina Demetriou et al. (2024). Theleritis 2024 -- Association of gut dysbiosis with first-episode psychosis (Review). Molecular Medicine Reports.

  3. 3

    Matteo Bronzini, Alessandro Maglione, Rachele Rosso et al. (2023). Feeding the gut microbiome: impact on multiple sclerosis. Frontiers in Immunology.

  4. 4

    Fiona C. Ross, Dhrati Patangia, Ghjuvan Grimaud et al. (2024). The interplay between diet and the gut microbiome: implications for health and disease. Nature Reviews Microbiology.

  5. 5

    Adriel Latorre-Pérez, Marta Hernández, Jose Ramón Iglesias et al. (2021). Latorre-Pérez 2021 — The Spanish Gut Microbiome Reveals Links Between Microorganisms and Mediterranean Diet. Scientific Reports.

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