Component
Human sodium-coupled citrate transporter / SLC13A5
Context-specific entity; species, compartment and exposure are stated on each claim.
4 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.
What it acts on
Lithium increased NaCT-mediated use of extracellular citrate for lipid synthesis in human liver cells.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human liver-cell tracer/transport study.
- limitations
- Does not establish that this pathway explains clinical weight change.
- nutrient_topic
- Lithium collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Lithium
- plain_language
- Transported citrate can enter lipid-building pathways.
- primary_references
- Human sodium-coupled citrate transporter, the orthologue of Drosophila Indy, as a novel target for lithium action. · 2003 · https://pubmed.ncbi.nlm.nih.gov/12826022/ · DOI 10.1042/BJ20030827
Lithium: metal-sensitive enzymes, transport and cross-nutrient mechanisms (2026-09-19) · lines 272–278
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Human liver-cell tracer/transport study. · source_derived_draft · unverified_draft
## lithium-nact-lipids Transported citrate can enter lipid-building pathways. Lithium increased NaCT-mediated use of extracellular citrate for lipid synthesis in human liver cells. Model: Human liver-cell tracer/transport study. Limitations: Does not establish that this pathway explains clinical weight change. Evidence access: Primary abstract Human sodium-coupled citrate transporter, the orthologue of Drosophila Indy, as a novel target for lithium action. · 2003 · https://pubmed.ncbi.nlm.nih.gov/12826022/ · DOI 10.1042/BJ20030827
Complete structured claim and evidence
What acts on it
Lithium shifted human NaCT toward higher substrate affinity and lower transport capacity.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Cloned human transporter kinetic analysis.
- limitations
- Net flux depends on citrate and ion concentrations; not unconditional stimulation at every substrate level.
- nutrient_topic
- Lithium collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Lithium
- plain_language
- A stronger apparent response can coexist with a lower maximum rate.
- primary_references
- Species-specific influence of lithium on the activity of SLC13A5 (NaCT): lithium-induced activation is specific for the transporter in primates. · 2015 · https://pubmed.ncbi.nlm.nih.gov/25617245/ · DOI 10.1124/jpet.114.221523
Lithium: metal-sensitive enzymes, transport and cross-nutrient mechanisms (2026-09-19) · lines 288–294
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Cloned human transporter kinetic analysis. · source_derived_draft · unverified_draft
## lithium-nact-affinity A stronger apparent response can coexist with a lower maximum rate. Lithium shifted human NaCT toward higher substrate affinity and lower transport capacity. Model: Cloned human transporter kinetic analysis. Limitations: Net flux depends on citrate and ion concentrations; not unconditional stimulation at every substrate level. Evidence access: Primary abstract Species-specific influence of lithium on the activity of SLC13A5 (NaCT): lithium-induced activation is specific for the transporter in primates. · 2015 · https://pubmed.ncbi.nlm.nih.gov/25617245/ · DOI 10.1124/jpet.114.221523
Complete structured claim and evidenceLithium stimulated human NaCT-mediated citrate transport at concentrations relevant to prescription exposure.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Expressed human transporter and human liver-cell experiments.
- limitations
- Not evidence that trace lithium has the same effect or that citrate salt ingestion determines the response.
- nutrient_topic
- Lithium collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Lithium
- plain_language
- A sodium-coupled carrier links lithium to carbon metabolism.
- primary_references
- Human sodium-coupled citrate transporter, the orthologue of Drosophila Indy, as a novel target for lithium action. · 2003 · https://pubmed.ncbi.nlm.nih.gov/12826022/ · DOI 10.1042/BJ20030827
Lithium: metal-sensitive enzymes, transport and cross-nutrient mechanisms (2026-09-19) · lines 264–270
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Expressed human transporter and human liver-cell experiments. · source_derived_draft · unverified_draft
## lithium-nact-human A sodium-coupled carrier links lithium to carbon metabolism. Lithium stimulated human NaCT-mediated citrate transport at concentrations relevant to prescription exposure. Model: Expressed human transporter and human liver-cell experiments. Limitations: Not evidence that trace lithium has the same effect or that citrate salt ingestion determines the response. Evidence access: Primary abstract Human sodium-coupled citrate transporter, the orthologue of Drosophila Indy, as a novel target for lithium action. · 2003 · https://pubmed.ncbi.nlm.nih.gov/12826022/ · DOI 10.1042/BJ20030827
Complete structured claim and evidenceF500W increased baseline transport but nearly eliminated additional lithium stimulation of human NaCT.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- evidence_access
- Primary abstract
- experimental_model
- Site-directed human transporter mutagenesis.
- limitations
- Engineered variant, not evidence of a common human nutritional phenotype.
- nutrient_topic
- Lithium collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Lithium
- plain_language
- A protein variant can change responsiveness independently of intake.
- primary_references
- Species-specific influence of lithium on the activity of SLC13A5 (NaCT): lithium-induced activation is specific for the transporter in primates. · 2015 · https://pubmed.ncbi.nlm.nih.gov/25617245/ · DOI 10.1124/jpet.114.221523
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Lithium: metal-sensitive enzymes, transport and cross-nutrient mechanisms (2026-09-19) · lines 296–302
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Site-directed human transporter mutagenesis. · source_derived_draft · unverified_draft
## lithium-nact-variant A protein variant can change responsiveness independently of intake. F500W increased baseline transport but nearly eliminated additional lithium stimulation of human NaCT. Model: Site-directed human transporter mutagenesis. Limitations: Engineered variant, not evidence of a common human nutritional phenotype. Evidence access: Primary abstract Species-specific influence of lithium on the activity of SLC13A5 (NaCT): lithium-induced activation is specific for the transporter in primates. · 2015 · https://pubmed.ncbi.nlm.nih.gov/25617245/ · DOI 10.1124/jpet.114.221523
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.