Component
Sodium butyrate
Context-specific entity; species, compartment and exposure are stated on each claim.
13 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
Where it participates (unsigned role)
Hippocampal Bdnf siRNA blocked the memory-enabling effect of post-training sodium butyrate in the mouse task.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- evidence_access
- Primary abstract
- experimental_model
- Mouse hippocampal siRNA and object-location memory assay.
- limitations
- Task- and intervention-specific; not a universal mechanism for every memory effect of butyrate.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- Reducing a neural growth-factor signal removed the measured benefit.
- primary_references
- Exercise and sodium butyrate transform a subthreshold learning event into long-term memory via a brain-derived neurotrophic factor-dependent mechanism. · 2013 · https://pubmed.ncbi.nlm.nih.gov/23615664/ · DOI 10.1038/npp.2013.104
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 630–636
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Mouse hippocampal siRNA and object-location memory assay. · source_derived_draft · unverified_draft
## butyrate-bdnf-knockdown Reducing a neural growth-factor signal removed the measured benefit. Hippocampal Bdnf siRNA blocked the memory-enabling effect of post-training sodium butyrate in the mouse task. Model: Mouse hippocampal siRNA and object-location memory assay. Limitations: Task- and intervention-specific; not a universal mechanism for every memory effect of butyrate. Evidence access: Primary abstract Exercise and sodium butyrate transform a subthreshold learning event into long-term memory via a brain-derived neurotrophic factor-dependent mechanism. · 2013 · https://pubmed.ncbi.nlm.nih.gov/23615664/ · DOI 10.1038/npp.2013.104
Complete structured claim and evidencePost-training sodium butyrate injection enabled 24-hour object-location memory after otherwise subthreshold training in mice, with increased hippocampal Bdnf transcripts.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Mouse behavioral and hippocampal transcription experiments.
- limitations
- Injected pharmacological exposure does not establish that ordinary microbial production or oral supplements improve human memory.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- Injected treatment changed a learning response in mice.
- primary_references
- Exercise and sodium butyrate transform a subthreshold learning event into long-term memory via a brain-derived neurotrophic factor-dependent mechanism. · 2013 · https://pubmed.ncbi.nlm.nih.gov/23615664/ · DOI 10.1038/npp.2013.104
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 622–628
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Mouse behavioral and hippocampal transcription experiments. · source_derived_draft · unverified_draft
## butyrate-brain-memory Injected treatment changed a learning response in mice. Post-training sodium butyrate injection enabled 24-hour object-location memory after otherwise subthreshold training in mice, with increased hippocampal Bdnf transcripts. Model: Mouse behavioral and hippocampal transcription experiments. Limitations: Injected pharmacological exposure does not establish that ordinary microbial production or oral supplements improve human memory. Evidence access: Primary abstract Exercise and sodium butyrate transform a subthreshold learning event into long-term memory via a brain-derived neurotrophic factor-dependent mechanism. · 2013 · https://pubmed.ncbi.nlm.nih.gov/23615664/ · DOI 10.1038/npp.2013.104
Complete structured claim and evidenceSodium butyrate promoted store-operated calcium entry and activated the CaMKK-beta/AMPK pathway during Caco-2 tight-junction reassembly, without the change being explained by ATP concentration.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human Caco-2 calcium-switch model.
- limitations
- This does not show that dietary calcium or magnesium supplementation improves the response.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- Calcium signaling helped connect butyrate to barrier repair.
- primary_references
- Sodium Butyrate Promotes Reassembly of Tight Junctions in Caco-2 Monolayers Involving Inhibition of MLCK/MLC2 Pathway and Phosphorylation of PKCβ2. · 2016 · https://pubmed.ncbi.nlm.nih.gov/27735862/ · DOI 10.3390/ijms17101696
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 270–276
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human Caco-2 calcium-switch model. · source_derived_draft · unverified_draft
## butyrate-calcium-soce Calcium signaling helped connect butyrate to barrier repair. Sodium butyrate promoted store-operated calcium entry and activated the CaMKK-beta/AMPK pathway during Caco-2 tight-junction reassembly, without the change being explained by ATP concentration. Model: Human Caco-2 calcium-switch model. Limitations: This does not show that dietary calcium or magnesium supplementation improves the response. Evidence access: Primary abstract Sodium Butyrate Promotes Reassembly of Tight Junctions in Caco-2 Monolayers Involving Inhibition of MLCK/MLC2 Pathway and Phosphorylation of PKCβ2. · 2016 · https://pubmed.ncbi.nlm.nih.gov/27735862/ · DOI 10.3390/ijms17101696
Complete structured claim and evidenceOral sodium butyrate did not significantly increase brown-adipose glucose uptake in either lean or metabolic-syndrome men in the pilot.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human FDG-PET/CT before/after measurements.
- limitations
- FDG uptake is a particular endpoint, not a complete assay of all thermogenesis.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- The expected brown-fat response was not detected.
- primary_references
- Differential metabolic effects of oral butyrate treatment in lean versus metabolic syndrome subjects. · 2018 · https://pubmed.ncbi.nlm.nih.gov/29799027/ · DOI 10.1038/s41424-018-0025-4
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 574–580
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human FDG-PET/CT before/after measurements. · source_derived_draft · unverified_draft
## butyrate-human-bat-null The expected brown-fat response was not detected. Oral sodium butyrate did not significantly increase brown-adipose glucose uptake in either lean or metabolic-syndrome men in the pilot. Model: Human FDG-PET/CT before/after measurements. Limitations: FDG uptake is a particular endpoint, not a complete assay of all thermogenesis. Evidence access: Primary abstract Differential metabolic effects of oral butyrate treatment in lean versus metabolic syndrome subjects. · 2018 · https://pubmed.ncbi.nlm.nih.gov/29799027/ · DOI 10.1038/s41424-018-0025-4
Complete structured claim and evidenceSodium butyrate reduced proteinuria, podocyte loss and renal injury in the mouse Adriamycin-nephropathy study.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Mouse induced-nephropathy intervention, with a separate butyrate-releasing starch arm.
- limitations
- Not evidence of efficacy in all human kidney diseases.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- The experimental benefit extended beyond the gut to the kidney.
- primary_references
- Gut microbial metabolite butyrate protects against proteinuric kidney disease through epigenetic- and GPR109a-mediated mechanisms. · 2019 · https://pubmed.ncbi.nlm.nih.gov/31366236/ · DOI 10.1096/fj.201901080R
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 606–612
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Mouse induced-nephropathy intervention, with a separate butyrate-releasing starch arm. · source_derived_draft · unverified_draft
## butyrate-kidney-protection The experimental benefit extended beyond the gut to the kidney. Sodium butyrate reduced proteinuria, podocyte loss and renal injury in the mouse Adriamycin-nephropathy study. Model: Mouse induced-nephropathy intervention, with a separate butyrate-releasing starch arm. Limitations: Not evidence of efficacy in all human kidney diseases. Evidence access: Primary abstract Gut microbial metabolite butyrate protects against proteinuric kidney disease through epigenetic- and GPR109a-mediated mechanisms. · 2019 · https://pubmed.ncbi.nlm.nih.gov/31366236/ · DOI 10.1096/fj.201901080R
Complete structured claim and evidenceIn nine lean men, four weeks of 4 g/day oral sodium butyrate was associated with improved peripheral and hepatic insulin sensitivity.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Uncontrolled before/after pilot with clamp measurements.
- limitations
- No placebo group; the lean arm cannot establish efficacy in metabolic syndrome.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- A small human pilot detected a metabolic change in lean participants.
- primary_references
- Differential metabolic effects of oral butyrate treatment in lean versus metabolic syndrome subjects. · 2018 · https://pubmed.ncbi.nlm.nih.gov/29799027/ · DOI 10.1038/s41424-018-0025-4
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 558–564
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Uncontrolled before/after pilot with clamp measurements. · source_derived_draft · unverified_draft
## butyrate-lean-human-insulin A small human pilot detected a metabolic change in lean participants. In nine lean men, four weeks of 4 g/day oral sodium butyrate was associated with improved peripheral and hepatic insulin sensitivity. Model: Uncontrolled before/after pilot with clamp measurements. Limitations: No placebo group; the lean arm cannot establish efficacy in metabolic syndrome. Evidence access: Primary abstract Differential metabolic effects of oral butyrate treatment in lean versus metabolic syndrome subjects. · 2018 · https://pubmed.ncbi.nlm.nih.gov/29799027/ · DOI 10.1038/s41424-018-0025-4
Complete structured claim and evidenceAfter preincubation with 2 mM sodium butyrate, AA/C1 cells increased the maximal butyrate uptake rate about fivefold without a significant change in apparent Km.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human colonic-cell radiotracer uptake.
- limitations
- An adaptive culture response does not establish oral bioavailability.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- Transport capacity increased rather than measured substrate affinity.
- primary_references
- Substrate-induced regulation of the human colonic monocarboxylate transporter, MCT1. · 2002 · https://pubmed.ncbi.nlm.nih.gov/11882670/ · DOI 10.1113/jphysiol.2001.014241
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 134–140
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human colonic-cell radiotracer uptake. · source_derived_draft · unverified_draft
## butyrate-mct1-capacity Transport capacity increased rather than measured substrate affinity. After preincubation with 2 mM sodium butyrate, AA/C1 cells increased the maximal butyrate uptake rate about fivefold without a significant change in apparent Km. Model: Human colonic-cell radiotracer uptake. Limitations: An adaptive culture response does not establish oral bioavailability. Evidence access: Primary abstract Substrate-induced regulation of the human colonic monocarboxylate transporter, MCT1. · 2002 · https://pubmed.ncbi.nlm.nih.gov/11882670/ · DOI 10.1113/jphysiol.2001.014241
Complete structured claim and evidenceAt 2 mM sodium butyrate, human AA/C1 colonic cells increased MCT1 mRNA and protein through transcription and greater mRNA stability.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human colonic epithelial AA/C1 cultures.
- limitations
- Acetate and propionate did not reproduce this response; exposure and cell state matter.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- Butyrate increased the capacity of one of its own uptake routes.
- primary_references
- Substrate-induced regulation of the human colonic monocarboxylate transporter, MCT1. · 2002 · https://pubmed.ncbi.nlm.nih.gov/11882670/ · DOI 10.1113/jphysiol.2001.014241
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 126–132
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human colonic epithelial AA/C1 cultures. · source_derived_draft · unverified_draft
## butyrate-mct1-expression Butyrate increased the capacity of one of its own uptake routes. At 2 mM sodium butyrate, human AA/C1 colonic cells increased MCT1 mRNA and protein through transcription and greater mRNA stability. Model: Human colonic epithelial AA/C1 cultures. Limitations: Acetate and propionate did not reproduce this response; exposure and cell state matter. Evidence access: Primary abstract Substrate-induced regulation of the human colonic monocarboxylate transporter, MCT1. · 2002 · https://pubmed.ncbi.nlm.nih.gov/11882670/ · DOI 10.1113/jphysiol.2001.014241
Complete structured claim and evidenceThe same 4 g/day, four-week pilot found no insulin-sensitivity improvement in its ten men with metabolic syndrome.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human uncontrolled pilot; separate metabolic-syndrome group.
- limitations
- Population differences are observed; altered handling is a proposed explanation rather than established mediation.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- The group with metabolic syndrome did not show the lean-group response.
- primary_references
- Differential metabolic effects of oral butyrate treatment in lean versus metabolic syndrome subjects. · 2018 · https://pubmed.ncbi.nlm.nih.gov/29799027/ · DOI 10.1038/s41424-018-0025-4
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 566–572
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human uncontrolled pilot; separate metabolic-syndrome group. · source_derived_draft · unverified_draft
## butyrate-metabolic-syndrome-null The group with metabolic syndrome did not show the lean-group response. The same 4 g/day, four-week pilot found no insulin-sensitivity improvement in its ten men with metabolic syndrome. Model: Human uncontrolled pilot; separate metabolic-syndrome group. Limitations: Population differences are observed; altered handling is a proposed explanation rather than established mediation. Evidence access: Primary abstract Differential metabolic effects of oral butyrate treatment in lean versus metabolic syndrome subjects. · 2018 · https://pubmed.ncbi.nlm.nih.gov/29799027/ · DOI 10.1038/s41424-018-0025-4
Complete structured claim and evidenceFeeding sodium butyrate at 5% of a high-fat diet increased thermogenesis and mitochondrial adaptation in mouse muscle and brown fat, with increased PGC-1alpha expression and insulin sensitivity.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- High-fat-fed C57BL/6J mice.
- limitations
- Five percent of diet is not a human supplement dose; this study did not observe reduced food intake.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- A high dietary exposure changed energy expenditure in mice.
- primary_references
- Butyrate improves insulin sensitivity and increases energy expenditure in mice. · 2009 · https://pubmed.ncbi.nlm.nih.gov/19366864/ · DOI 10.2337/db08-1637
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 550–556
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · High-fat-fed C57BL/6J mice. · source_derived_draft · unverified_draft
## butyrate-mouse-thermogenesis A high dietary exposure changed energy expenditure in mice. Feeding sodium butyrate at 5% of a high-fat diet increased thermogenesis and mitochondrial adaptation in mouse muscle and brown fat, with increased PGC-1alpha expression and insulin sensitivity. Model: High-fat-fed C57BL/6J mice. Limitations: Five percent of diet is not a human supplement dose; this study did not observe reduced food intake. Evidence access: Primary abstract Butyrate improves insulin sensitivity and increases energy expenditure in mice. · 2009 · https://pubmed.ncbi.nlm.nih.gov/19366864/ · DOI 10.2337/db08-1637
Complete structured claim and evidenceIn 23 hypertensive adults, 3.9 g/day oral sodium butyrate for four weeks increased daytime systolic pressure by 9.63 mmHg and diastolic pressure by 5.08 mmHg versus sodium-matched placebo.
Experimental context and source evidence
- evidence_access
- Primary full text, intervention methods and primary results
- experimental_model
- Double-blind randomized trial after supervised antihypertensive washout; sodium chloride placebo matched the sodium load.
- limitations
- Small short trial; do not infer the increase was simply unmatched sodium or advise medication changes.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- An oral human trial found higher blood pressure.
- primary_references
- Effects of Oral Butyrate on Blood Pressure in Patients With Hypertension: A Randomized, Placebo-Controlled Trial. · 2024 · https://pubmed.ncbi.nlm.nih.gov/39034917/ · DOI 10.1161/HYPERTENSIONAHA.123.22437
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 582–588
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Double-blind randomized trial after supervised antihypertensive washout; sodium chloride placebo matched the sodium load. · source_derived_draft · unverified_draft
## butyrate-oral-bp-increase An oral human trial found higher blood pressure. In 23 hypertensive adults, 3.9 g/day oral sodium butyrate for four weeks increased daytime systolic pressure by 9.63 mmHg and diastolic pressure by 5.08 mmHg versus sodium-matched placebo. Model: Double-blind randomized trial after supervised antihypertensive washout; sodium chloride placebo matched the sodium load. Limitations: Small short trial; do not infer the increase was simply unmatched sodium or advise medication changes. Evidence access: Primary full text, intervention methods and primary results Effects of Oral Butyrate on Blood Pressure in Patients With Hypertension: A Randomized, Placebo-Controlled Trial. · 2024 · https://pubmed.ncbi.nlm.nih.gov/39034917/ · DOI 10.1161/HYPERTENSIONAHA.123.22437
Complete structured claim and evidenceSodium butyrate increased PKC-beta2 Ser660 phosphorylation; PKC-beta inhibition blocked the promoted junction reassembly.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human Caco-2 signaling and inhibitor experiments.
- limitations
- Inhibitor sensitivity does not imply direct binding of butyrate to PKC-beta2.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- A downstream kinase contributed to rebuilding the junction.
- primary_references
- Sodium Butyrate Promotes Reassembly of Tight Junctions in Caco-2 Monolayers Involving Inhibition of MLCK/MLC2 Pathway and Phosphorylation of PKCβ2. · 2016 · https://pubmed.ncbi.nlm.nih.gov/27735862/ · DOI 10.3390/ijms17101696
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 278–284
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human Caco-2 signaling and inhibitor experiments. · source_derived_draft · unverified_draft
## butyrate-pkcb-junction A downstream kinase contributed to rebuilding the junction. Sodium butyrate increased PKC-beta2 Ser660 phosphorylation; PKC-beta inhibition blocked the promoted junction reassembly. Model: Human Caco-2 signaling and inhibitor experiments. Limitations: Inhibitor sensitivity does not imply direct binding of butyrate to PKC-beta2. Evidence access: Primary abstract Sodium Butyrate Promotes Reassembly of Tight Junctions in Caco-2 Monolayers Involving Inhibition of MLCK/MLC2 Pathway and Phosphorylation of PKCβ2. · 2016 · https://pubmed.ncbi.nlm.nih.gov/27735862/ · DOI 10.3390/ijms17101696
Complete structured claim and evidenceOral butyrate increased plasma butyrate without increasing fecal butyrate in the hypertension trial.
Experimental context and source evidence
- availability_state
- biomarker_context Imported condition classification; unverified.
- evidence_access
- Primary abstract
- experimental_model
- Same randomized human oral trial.
- limitations
- Neither compartment is a universal measure of intracellular sufficiency or total microbial production.
- nutrient_topic
- Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
- plain_language
- Blood and stool measurements did not change together.
- primary_references
- Effects of Oral Butyrate on Blood Pressure in Patients With Hypertension: A Randomized, Placebo-Controlled Trial. · 2024 · https://pubmed.ncbi.nlm.nih.gov/39034917/ · DOI 10.1161/HYPERTENSIONAHA.123.22437
- trigger_kind
- biomarker_context Imported condition classification; unverified.
Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 598–604
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Same randomized human oral trial. · source_derived_draft · unverified_draft
## butyrate-plasma-feces-diverge Blood and stool measurements did not change together. Oral butyrate increased plasma butyrate without increasing fecal butyrate in the hypertension trial. Model: Same randomized human oral trial. Limitations: Neither compartment is a universal measure of intracellular sufficiency or total microbial production. Evidence access: Primary abstract Effects of Oral Butyrate on Blood Pressure in Patients With Hypertension: A Randomized, Placebo-Controlled Trial. · 2024 · https://pubmed.ncbi.nlm.nih.gov/39034917/ · DOI 10.1161/HYPERTENSIONAHA.123.22437
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.