Component
Human OATP1B1 / SLCO1B1
Context-specific entity; species, compartment and exposure are stated on each claim.
17 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
Human SLCO1B1 transported Luteolin 3′-O-glucuronide in the fluorescence-based uptake assay.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Living-cell uptake using 2-APB fluorescence enhancement.
- limitations
- Transport capacity is not clinical efficacy or net organ flux.
- nutrient_topic
- Luteolin collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Luteolin / 3′,4′,5,7-tetrahydroxyflavone
- plain_language
- A circulating conjugate has a route into cells.
- primary_references
- The 2-aminoethyl diphenylborinate-based fluorescent method identifies quercetin and luteolin metabolites as substrates of Organic anion transporting polypeptides, OATP1B1 and OATP2B1. · 2024 · https://pubmed.ncbi.nlm.nih.gov/38437885/ · DOI 10.1016/j.ejps.2024.106740
- transport_effect
- raises Measured in a fluorescence-based uptake assay.
- transport_pool
- the hepatocyte-model cell in the uptake assay Measured in a fluorescence-based uptake assay.
Luteolin: metabolism, immune signaling, redox chemistry and cross-nutrient mechanisms (2026-09-19) · lines 172–178
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Living-cell uptake using 2-APB fluorescence enhancement. · source_derived_draft · unverified_draft
## luteolin-slco1b1-3g A circulating conjugate has a route into cells. Human SLCO1B1 transported Luteolin 3′-O-glucuronide in the fluorescence-based uptake assay. Model: Living-cell uptake using 2-APB fluorescence enhancement. Limitations: Transport capacity is not clinical efficacy or net organ flux. Evidence access: Primary abstract The 2-aminoethyl diphenylborinate-based fluorescent method identifies quercetin and luteolin metabolites as substrates of Organic anion transporting polypeptides, OATP1B1 and OATP2B1. · 2024 · https://pubmed.ncbi.nlm.nih.gov/38437885/ · DOI 10.1016/j.ejps.2024.106740
Complete structured claim and evidenceHuman SLCO1B1 transported Luteolin 3′-O-sulfate in the fluorescence-based uptake assay.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Living-cell uptake using 2-APB fluorescence enhancement.
- limitations
- Transport capacity is not clinical efficacy or net organ flux.
- nutrient_topic
- Luteolin collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Luteolin / 3′,4′,5,7-tetrahydroxyflavone
- plain_language
- A circulating conjugate has a route into cells.
- primary_references
- The 2-aminoethyl diphenylborinate-based fluorescent method identifies quercetin and luteolin metabolites as substrates of Organic anion transporting polypeptides, OATP1B1 and OATP2B1. · 2024 · https://pubmed.ncbi.nlm.nih.gov/38437885/ · DOI 10.1016/j.ejps.2024.106740
- transport_effect
- raises Measured in a fluorescence-based uptake assay.
- transport_pool
- the hepatocyte-model cell in the uptake assay Measured in a fluorescence-based uptake assay.
Luteolin: metabolism, immune signaling, redox chemistry and cross-nutrient mechanisms (2026-09-19) · lines 188–194
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Living-cell uptake using 2-APB fluorescence enhancement. · source_derived_draft · unverified_draft
## luteolin-slco1b1-3s A circulating conjugate has a route into cells. Human SLCO1B1 transported Luteolin 3′-O-sulfate in the fluorescence-based uptake assay. Model: Living-cell uptake using 2-APB fluorescence enhancement. Limitations: Transport capacity is not clinical efficacy or net organ flux. Evidence access: Primary abstract The 2-aminoethyl diphenylborinate-based fluorescent method identifies quercetin and luteolin metabolites as substrates of Organic anion transporting polypeptides, OATP1B1 and OATP2B1. · 2024 · https://pubmed.ncbi.nlm.nih.gov/38437885/ · DOI 10.1016/j.ejps.2024.106740
Complete structured claim and evidenceHuman SLCO1B1 transported Luteolin 7-O-glucuronide in the fluorescence-based uptake assay.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Living-cell uptake using 2-APB fluorescence enhancement.
- limitations
- Transport capacity is not clinical efficacy or net organ flux.
- nutrient_topic
- Luteolin collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Luteolin / 3′,4′,5,7-tetrahydroxyflavone
- plain_language
- A circulating conjugate has a route into cells.
- primary_references
- The 2-aminoethyl diphenylborinate-based fluorescent method identifies quercetin and luteolin metabolites as substrates of Organic anion transporting polypeptides, OATP1B1 and OATP2B1. · 2024 · https://pubmed.ncbi.nlm.nih.gov/38437885/ · DOI 10.1016/j.ejps.2024.106740
- transport_effect
- raises Measured in a fluorescence-based uptake assay.
- transport_pool
- the hepatocyte-model cell in the uptake assay Measured in a fluorescence-based uptake assay.
Luteolin: metabolism, immune signaling, redox chemistry and cross-nutrient mechanisms (2026-09-19) · lines 180–186
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Living-cell uptake using 2-APB fluorescence enhancement. · source_derived_draft · unverified_draft
## luteolin-slco1b1-7g A circulating conjugate has a route into cells. Human SLCO1B1 transported Luteolin 7-O-glucuronide in the fluorescence-based uptake assay. Model: Living-cell uptake using 2-APB fluorescence enhancement. Limitations: Transport capacity is not clinical efficacy or net organ flux. Evidence access: Primary abstract The 2-aminoethyl diphenylborinate-based fluorescent method identifies quercetin and luteolin metabolites as substrates of Organic anion transporting polypeptides, OATP1B1 and OATP2B1. · 2024 · https://pubmed.ncbi.nlm.nih.gov/38437885/ · DOI 10.1016/j.ejps.2024.106740
Complete structured claim and evidenceMyricetin 3′-O-sulfate was a substrate of human SLCO1B1.
Experimental context and source evidence
- evidence_access
- Primary full text
- experimental_model
- Overexpressing-cell uptake with flavonoid fluorescence method.
- limitations
- Not a quantified human tissue delivery rate.
- nutrient_topic
- Myricetin collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Myricetin
- plain_language
- The sulfate is transported, not simply inactive waste.
- primary_references
- Interaction of myricetin, ampelopsin (dihydromyricetin), and their sulfate metabolites with serum albumin, cytochrome P450 (CYP2C9, 2C19, and 3A4) enzymes, and organic anion-transporting polypeptides (OATP1B1 and OATP2B1). · 2024 · https://pubmed.ncbi.nlm.nih.gov/39344282/ · DOI 10.1002/prp2.70021
- transport_effect
- raises Recorded as a substrate in the OATP1B1 uptake assay.
- transport_pool
- the hepatocyte-model cell in the uptake assay Recorded as a substrate in the OATP1B1 uptake assay.
Myricetin: metabolism, immune signaling, redox chemistry and cross-nutrient mechanisms (2026-09-19) · lines 204–210
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Overexpressing-cell uptake with flavonoid fluorescence method. · source_derived_draft · unverified_draft
## myricetin-sulfate-uptake-slco1b1 The sulfate is transported, not simply inactive waste. Myricetin 3′-O-sulfate was a substrate of human SLCO1B1. Model: Overexpressing-cell uptake with flavonoid fluorescence method. Limitations: Not a quantified human tissue delivery rate. Evidence access: Primary full text Interaction of myricetin, ampelopsin (dihydromyricetin), and their sulfate metabolites with serum albumin, cytochrome P450 (CYP2C9, 2C19, and 3A4) enzymes, and organic anion-transporting polypeptides (OATP1B1 and OATP2B1). · 2024 · https://pubmed.ncbi.nlm.nih.gov/39344282/ · DOI 10.1002/prp2.70021
Complete structured claim and evidenceOATP1B1 activity lowers plasma atorvastatin exposure by carrying the drug from portal blood into the hepatocyte, so reducing that activity raises the plasma concentration.
Experimental context and source evidence
- duration
- Single dose in both designs
- evidence_access
- Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
- experimental_model
- Healthy human volunteers, by pharmacological inhibition and by reduced-function genotype
- exposure
- Rifampicin inhibition in one study and the SLCO1B1 c.521CC genotype in another
- limitations
- This is the mechanistic reading shared by an inhibitor study and a genotype study rather than a single measurement of transporter activity against exposure; neither study measured OATP1B1 activity directly in the participants.
- organism
- Healthy human volunteers, by pharmacological inhibition and by reduced-function genotype
- plain_language
- OATP1B1 activity lowers plasma atorvastatin exposure by carrying the drug from portal blood into the hepatocyte, so reducing that activity raises the plasma concentration.
- primary_references
- The effect of OATP1B transporter inhibition on the pharmacokinetics of atorvastatin in healthy volunteers. (2007). https://pubmed.ncbi.nlm.nih.gov/17192770/ DOI: 10.1038/sj.clpt.6100038
- route
- Oral atorvastatin
- tissue
- Hepatic sinusoidal uptake and systemic plasma exposure
OATP1B1 activity and statin exposure: the step between transporter inhibition and drug concentration (2026-09-22) · lines 24–33
Original AI-assisted curation of four primary studies resolved by PubMed title search and cross-checked against live PubMed metadata. Three of the four share one research group and are recorded as one line of evidence. Study-specific citations, doses and limitations retained. Not publisher full text. · supports · · source_derived_draft · unverified_draft
## oatp1b1-activity-lowers-atorvastatin-exposure OATP1B1 activity lowers plasma atorvastatin exposure by carrying the drug from portal blood into the hepatocyte, so reducing that activity raises the plasma concentration. Model/species: Healthy human volunteers, by pharmacological inhibition and by reduced-function genotype Tissue/system: Hepatic sinusoidal uptake and systemic plasma exposure Exposure: Rifampicin inhibition in one study and the SLCO1B1 c.521CC genotype in another Route: Oral atorvastatin Duration: Single dose in both designs Limits: This is the mechanistic reading shared by an inhibitor study and a genotype study rather than a single measurement of transporter activity against exposure; neither study measured OATP1B1 activity directly in the participants. Primary reference: The effect of OATP1B transporter inhibition on the pharmacokinetics of atorvastatin in healthy volunteers. (2007). https://pubmed.ncbi.nlm.nih.gov/17192770/ DOI: 10.1038/sj.clpt.6100038 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
Complete structured claim and evidenceThe SLCO1B1 c.521T>C variant decreases OATP1B1 transporting activity, markedly increasing plasma statin concentrations, and thereby enhances the risk of statin-induced myopathy and decreases the therapeutic index of statins.
Experimental context and source evidence
- duration
- Not applicable
- evidence_access
- Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
- experimental_model
- Review of human pharmacogenetic and pharmacokinetic studies
- exposure
- SLCO1B1 c.521T>C, protein p.V174A, rs4149056
- limitations
- This is a review statement summarising several studies rather than a single measurement, the effect differs between statins, and it describes the variant's effect on activity rather than a directly measured activity-to-myopathy relationship.
- organism
- Review of human pharmacogenetic and pharmacokinetic studies
- plain_language
- The SLCO1B1 c.521T>C variant decreases OATP1B1 transporting activity, markedly increasing plasma statin concentrations, and thereby enhances the risk of statin-induced myopathy and decreases the therapeutic index of statins.
- primary_references
- Organic anion transporting polypeptide 1B1: a genetically polymorphic transporter of major importance for hepatic drug uptake. (2011). https://pubmed.ncbi.nlm.nih.gov/21245207/ DOI: 10.1124/pr.110.002857
- route
- Oral statins
- tissue
- Hepatic uptake, plasma statin concentration and skeletal muscle injury
OATP1B1 activity and statin exposure: the step between transporter inhibition and drug concentration (2026-09-22) · lines 68–77
Original AI-assisted curation of four primary studies resolved by PubMed title search and cross-checked against live PubMed metadata. Three of the four share one research group and are recorded as one line of evidence. Study-specific citations, doses and limitations retained. Not publisher full text. · supports · · source_derived_draft · unverified_draft
## oatp1b1-activity-lowers-statin-myopathy-risk The SLCO1B1 c.521T>C variant decreases OATP1B1 transporting activity, markedly increasing plasma statin concentrations, and thereby enhances the risk of statin-induced myopathy and decreases the therapeutic index of statins. Model/species: Review of human pharmacogenetic and pharmacokinetic studies Tissue/system: Hepatic uptake, plasma statin concentration and skeletal muscle injury Exposure: SLCO1B1 c.521T>C, protein p.V174A, rs4149056 Route: Oral statins Duration: Not applicable Limits: This is a review statement summarising several studies rather than a single measurement, the effect differs between statins, and it describes the variant's effect on activity rather than a directly measured activity-to-myopathy relationship. Primary reference: Organic anion transporting polypeptide 1B1: a genetically polymorphic transporter of major importance for hepatic drug uptake. (2011). https://pubmed.ncbi.nlm.nih.gov/21245207/ DOI: 10.1124/pr.110.002857 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
Complete structured claim and evidence
What acts on it
Cyclosporin A inhibited OATP2-mediated uptake of labelled cerivastatin in transporter-expressing MDCKII cells with a Ki of 0.2 micromolar.
Experimental context and source evidence
- duration
- Not stated here
- evidence_access
- Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
- experimental_model
- Human OATP2 (OATP1B1 / SLCO1B1) expressed in MDCKII cells
- exposure
- Cyclosporin A
- limitations
- The transporter is named OATP2 in this 2003 report, which is the protein now called OATP1B1 and encoded by SLCO1B1; the same entity is reused here rather than forked. The Ki is for cerivastatin as the probe substrate and does not transfer unchanged to other OATP1B1 substrates.
- organism
- Human OATP2 (OATP1B1 / SLCO1B1) expressed in MDCKII cells
- plain_language
- Cyclosporin A inhibited OATP2-mediated uptake of labelled cerivastatin in transporter-expressing MDCKII cells with a Ki of 0.2 micromolar.
- primary_references
- Inhibition of transporter-mediated hepatic uptake as a mechanism for drug-drug interaction between cerivastatin and cyclosporin A. (2003). https://pubmed.ncbi.nlm.nih.gov/12538813/ DOI: 10.1124/jpet.102.041921
- route
- In vitro
- tissue
- Hepatic sinusoidal uptake transport
Cyclosporine: the complex that inhibits calcineurin, a second cyclophilin, and the transport step that decides exposure (2026-09-23) · lines 146–146
Original AI-assisted curation of seven primary studies resolved by PubMed title search, with every abstract read and all DOIs cross-checked against live PubMed metadata on 2026-09-23. No reference carries a recorded retraction, erratum or expression of concern. Each of the seven is a separate laboratory and each carries its own lineage key, so none of them can be counted twice as independent support. Study-specific concentrations, kinetic constants and limitations retained. Not publisher full text. · supports · Human OATP2 (OATP1B1 / SLCO1B1) expressed in MDCKII cells · source_derived_draft · unverified_draft
Cyclosporin A inhibited OATP2-mediated uptake of labelled cerivastatin in transporter-expressing MDCKII cells with a Ki of 0.2 micromolar.
Complete structured claim and evidenceLuteolin 3′-O-glucuronide strongly inhibited OATP1B1 in vitro.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human transporter interaction assays.
- limitations
- No clinical drug-exposure change was measured.
- nutrient_topic
- Luteolin collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Luteolin / 3′,4′,5,7-tetrahydroxyflavone
- plain_language
- A transported metabolite can also compete with uptake.
- primary_references
- Interaction of luteolin, naringenin, and their sulfate and glucuronide conjugates with human serum albumin, cytochrome P450 (CYP2C9, CYP2C19, and CYP3A4) enzymes and organic anion transporting polypeptide (OATP1B1 and OATP2B1) transporters. · 2023 · https://pubmed.ncbi.nlm.nih.gov/36481402/ · DOI 10.1016/j.biopha.2022.114078
Luteolin: metabolism, immune signaling, redox chemistry and cross-nutrient mechanisms (2026-09-19) · lines 228–234
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human transporter interaction assays. · source_derived_draft · unverified_draft
## luteolin-oatp1b1-inhibition-glucuronide A transported metabolite can also compete with uptake. Luteolin 3′-O-glucuronide strongly inhibited OATP1B1 in vitro. Model: Human transporter interaction assays. Limitations: No clinical drug-exposure change was measured. Evidence access: Primary abstract Interaction of luteolin, naringenin, and their sulfate and glucuronide conjugates with human serum albumin, cytochrome P450 (CYP2C9, CYP2C19, and CYP3A4) enzymes and organic anion transporting polypeptide (OATP1B1 and OATP2B1) transporters. · 2023 · https://pubmed.ncbi.nlm.nih.gov/36481402/ · DOI 10.1016/j.biopha.2022.114078
Complete structured claim and evidenceLuteolin 3′-O-sulfate strongly inhibited OATP1B1 in vitro.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human transporter interaction assays.
- limitations
- No clinical drug-exposure change was measured.
- nutrient_topic
- Luteolin collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Luteolin / 3′,4′,5,7-tetrahydroxyflavone
- plain_language
- A transported metabolite can also compete with uptake.
- primary_references
- Interaction of luteolin, naringenin, and their sulfate and glucuronide conjugates with human serum albumin, cytochrome P450 (CYP2C9, CYP2C19, and CYP3A4) enzymes and organic anion transporting polypeptide (OATP1B1 and OATP2B1) transporters. · 2023 · https://pubmed.ncbi.nlm.nih.gov/36481402/ · DOI 10.1016/j.biopha.2022.114078
Luteolin: metabolism, immune signaling, redox chemistry and cross-nutrient mechanisms (2026-09-19) · lines 220–226
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human transporter interaction assays. · source_derived_draft · unverified_draft
## luteolin-oatp1b1-inhibition-sulfate A transported metabolite can also compete with uptake. Luteolin 3′-O-sulfate strongly inhibited OATP1B1 in vitro. Model: Human transporter interaction assays. Limitations: No clinical drug-exposure change was measured. Evidence access: Primary abstract Interaction of luteolin, naringenin, and their sulfate and glucuronide conjugates with human serum albumin, cytochrome P450 (CYP2C9, CYP2C19, and CYP3A4) enzymes and organic anion transporting polypeptide (OATP1B1 and OATP2B1) transporters. · 2023 · https://pubmed.ncbi.nlm.nih.gov/36481402/ · DOI 10.1016/j.biopha.2022.114078
Complete structured claim and evidenceThe parent inhibited human SLCO1B1 transport in vitro, IC50 6.4 micromolar.
Experimental context and source evidence
- evidence_access
- Primary full text
- experimental_model
- Human transporter-overexpressing cells.
- limitations
- Probe-substrate potency is not a measured clinical drug interaction.
- nutrient_topic
- Myricetin collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Myricetin
- plain_language
- Transport competition can depend on the metabolite.
- primary_references
- Interaction of myricetin, ampelopsin (dihydromyricetin), and their sulfate metabolites with serum albumin, cytochrome P450 (CYP2C9, 2C19, and 3A4) enzymes, and organic anion-transporting polypeptides (OATP1B1 and OATP2B1). · 2024 · https://pubmed.ncbi.nlm.nih.gov/39344282/ · DOI 10.1002/prp2.70021
Myricetin: metabolism, immune signaling, redox chemistry and cross-nutrient mechanisms (2026-09-19) · lines 108–114
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Human transporter-overexpressing cells. · source_derived_draft · unverified_draft
## myricetin-parent-slco1b1 Transport competition can depend on the metabolite. The parent inhibited human SLCO1B1 transport in vitro, IC50 6.4 micromolar. Model: Human transporter-overexpressing cells. Limitations: Probe-substrate potency is not a measured clinical drug interaction. Evidence access: Primary full text Interaction of myricetin, ampelopsin (dihydromyricetin), and their sulfate metabolites with serum albumin, cytochrome P450 (CYP2C9, 2C19, and 3A4) enzymes, and organic anion-transporting polypeptides (OATP1B1 and OATP2B1). · 2024 · https://pubmed.ncbi.nlm.nih.gov/39344282/ · DOI 10.1002/prp2.70021
Complete structured claim and evidenceThe sulfate inhibited human SLCO1B1 transport in vitro, IC50 1.7 micromolar.
Experimental context and source evidence
- evidence_access
- Primary full text
- experimental_model
- Human transporter-overexpressing cells.
- limitations
- Probe-substrate potency is not a measured clinical drug interaction.
- nutrient_topic
- Myricetin collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Myricetin
- plain_language
- Transport competition can depend on the metabolite.
- primary_references
- Interaction of myricetin, ampelopsin (dihydromyricetin), and their sulfate metabolites with serum albumin, cytochrome P450 (CYP2C9, 2C19, and 3A4) enzymes, and organic anion-transporting polypeptides (OATP1B1 and OATP2B1). · 2024 · https://pubmed.ncbi.nlm.nih.gov/39344282/ · DOI 10.1002/prp2.70021
Myricetin: metabolism, immune signaling, redox chemistry and cross-nutrient mechanisms (2026-09-19) · lines 156–162
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Human transporter-overexpressing cells. · source_derived_draft · unverified_draft
## myricetin-sulfate-slco1b1 Transport competition can depend on the metabolite. The sulfate inhibited human SLCO1B1 transport in vitro, IC50 1.7 micromolar. Model: Human transporter-overexpressing cells. Limitations: Probe-substrate potency is not a measured clinical drug interaction. Evidence access: Primary full text Interaction of myricetin, ampelopsin (dihydromyricetin), and their sulfate metabolites with serum albumin, cytochrome P450 (CYP2C9, 2C19, and 3A4) enzymes, and organic anion-transporting polypeptides (OATP1B1 and OATP2B1). · 2024 · https://pubmed.ncbi.nlm.nih.gov/39344282/ · DOI 10.1002/prp2.70021
Complete structured claim and evidence
Where it participates (unsigned role)
A genome-wide association study found a single strong association of statin myopathy with the rs4363657 variant within SLCO1B1, which encodes the hepatic uptake transporter OATP1B1.
Experimental context and source evidence
- duration
- Trial duration, not stated here
- evidence_access
- Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
- experimental_model
- 85 subjects with definite or incipient myopathy and 90 controls, replicated in a separate trial
- exposure
- Simvastatin 80 mg daily, replication at simvastatin 40 mg daily
- limitations
- The statin was simvastatin, not atorvastatin, and the association is with a noncoding variant rather than a demonstrated change in transporter function in these subjects.
- organism
- 85 subjects with definite or incipient myopathy and 90 controls, replicated in a separate trial
- plain_language
- A genome-wide association study found a single strong association of statin myopathy with the rs4363657 variant within SLCO1B1, which encodes the hepatic uptake transporter OATP1B1.
- primary_references
- SLCO1B1 variants and statin-induced myopathy--a genomewide study. (2008). https://pubmed.ncbi.nlm.nih.gov/18650507/ DOI: 10.1056/NEJMoa0801936
- route
- Oral
- tissue
- Hepatic statin uptake and skeletal muscle injury
Atorvastatin: mechanism of action from target occupancy to isoprenoids, transport, muscle and metabolism (2026-09-22) · lines 133–142
Original AI-assisted curation of twelve primary studies resolved by PubMed title search and cross-checked against live PubMed metadata. Findings obtained with mevastatin, simvastatin or the statin class are recorded against those subjects. Study-specific citations, doses, negative findings and limitations retained. Not publisher full text. · supports · · source_derived_draft · unverified_draft
## slco1b1-variant-and-statin-myopathy A genome-wide association study found a single strong association of statin myopathy with the rs4363657 variant within SLCO1B1, which encodes the hepatic uptake transporter OATP1B1. Model/species: 85 subjects with definite or incipient myopathy and 90 controls, replicated in a separate trial Tissue/system: Hepatic statin uptake and skeletal muscle injury Exposure: Simvastatin 80 mg daily, replication at simvastatin 40 mg daily Route: Oral Duration: Trial duration, not stated here Limits: The statin was simvastatin, not atorvastatin, and the association is with a noncoding variant rather than a demonstrated change in transporter function in these subjects. Primary reference: SLCO1B1 variants and statin-induced myopathy--a genomewide study. (2008). https://pubmed.ncbi.nlm.nih.gov/18650507/ DOI: 10.1056/NEJMoa0801936 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
Complete structured claim and evidenceSelected naringenin sulfate or glucuronide conjugates potently inhibited OATP1B1 and/or OATP2B1 in vitro.
Experimental context and source evidence
- dose
- Naringenin metabolite concentration-response
- duration
- Acute
- evidence_access
- Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
- evidence_scope
- literature_reviewed; model-specific source-derived curation
- experimental_model
- Transporter expression assays
- limitations
- The abstract does not assign every conjugate to each transporter or establish interaction at human free concentrations.
- nutrient_topic
- Naringenin chapter; interacting nutrients, drugs, peptides and proteins retain their experimental settings. · Naringenin
- organism
- Transporter expression assays
- plain_language
- Selected naringenin sulfate or glucuronide conjugates potently inhibited OATP1B1 and/or OATP2B1 in vitro.
- primary_references
- Interaction of luteolin, naringenin, and their sulfate and glucuronide conjugates with human serum albumin, cytochrome P450 (CYP2C9, CYP2C19, and CYP3A4) enzymes and organic anion transporting polypeptide (OATP1B1 and OATP2B1) transporters. (2023). https://pubmed.ncbi.nlm.nih.gov/36481402/ DOI: 10.1016/j.biopha.2022.114078
- route
- In vitro
- tissue
- OATP1B1 and OATP2B1 transport
Naringenin: mechanism of action and interactions (2026-09-20) · lines 88–97
Original AI-assisted source-specific curation with primary-study citations, model, exposure, route, duration, negative findings and limitations preserved. Not publisher full text. · supports · Transporter expression assays · source_derived_draft · unverified_draft
## naringenin-oatp-inhibition Selected naringenin sulfate or glucuronide conjugates potently inhibited OATP1B1 and/or OATP2B1 in vitro. Model/species: Transporter expression assays Tissue/system: OATP1B1 and OATP2B1 transport Exposure: Naringenin metabolite concentration-response Route: In vitro Duration: Acute Limits: The abstract does not assign every conjugate to each transporter or establish interaction at human free concentrations. Primary reference: Interaction of luteolin, naringenin, and their sulfate and glucuronide conjugates with human serum albumin, cytochrome P450 (CYP2C9, CYP2C19, and CYP3A4) enzymes and organic anion transporting polypeptide (OATP1B1 and OATP2B1) transporters. (2023). https://pubmed.ncbi.nlm.nih.gov/36481402/ DOI: 10.1016/j.biopha.2022.114078 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
Complete structured claim and evidenceA single intravenous dose of rifampicin increased the total plasma exposure of atorvastatin acid by 6.8-fold in healthy volunteers.
Experimental context and source evidence
- duration
- Single dose, sampling to 24 hours
- evidence_access
- Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
- experimental_model
- 11 healthy human volunteers, randomised crossover
- exposure
- Two 40 mg oral atorvastatin doses one week apart, with one 30-minute intravenous infusion of 600 mg rifampicin on one of the two study days
- limitations
- Rifampicin is used here as a model hepatic uptake inhibitor and is not selective for OATP1B1; the lactone forms rose less than the acid, and a single intravenous dose avoids the enzyme induction that repeated oral rifampicin would cause.
- organism
- 11 healthy human volunteers, randomised crossover
- plain_language
- A single intravenous dose of rifampicin increased the total plasma exposure of atorvastatin acid by 6.8-fold in healthy volunteers.
- primary_references
- The effect of OATP1B transporter inhibition on the pharmacokinetics of atorvastatin in healthy volunteers. (2007). https://pubmed.ncbi.nlm.nih.gov/17192770/ DOI: 10.1038/sj.clpt.6100038
- route
- Oral atorvastatin with intravenous rifampicin
- tissue
- Plasma atorvastatin acid and its hydroxy metabolites
OATP1B1 activity and statin exposure: the step between transporter inhibition and drug concentration (2026-09-22) · lines 13–22
Original AI-assisted curation of four primary studies resolved by PubMed title search and cross-checked against live PubMed metadata. Three of the four share one research group and are recorded as one line of evidence. Study-specific citations, doses and limitations retained. Not publisher full text. · supports · · source_derived_draft · unverified_draft
## rifampicin-raises-atorvastatin-exposure A single intravenous dose of rifampicin increased the total plasma exposure of atorvastatin acid by 6.8-fold in healthy volunteers. Model/species: 11 healthy human volunteers, randomised crossover Tissue/system: Plasma atorvastatin acid and its hydroxy metabolites Exposure: Two 40 mg oral atorvastatin doses one week apart, with one 30-minute intravenous infusion of 600 mg rifampicin on one of the two study days Route: Oral atorvastatin with intravenous rifampicin Duration: Single dose, sampling to 24 hours Limits: Rifampicin is used here as a model hepatic uptake inhibitor and is not selective for OATP1B1; the lactone forms rose less than the acid, and a single intravenous dose avoids the enzyme induction that repeated oral rifampicin would cause. Primary reference: The effect of OATP1B transporter inhibition on the pharmacokinetics of atorvastatin in healthy volunteers. (2007). https://pubmed.ncbi.nlm.nih.gov/17192770/ DOI: 10.1038/sj.clpt.6100038 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
Complete structured claim and evidenceVolunteers with the SLCO1B1 c.521CC genotype had 144 percent greater plasma atorvastatin exposure than those with the c.521TT genotype.
Experimental context and source evidence
- duration
- Single dose with 48-hour sampling
- evidence_access
- Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
- experimental_model
- 32 healthy volunteers, 4 with c.521CC, 12 with c.521TC and 16 with c.521TT
- exposure
- Single 20 mg oral atorvastatin dose
- limitations
- Only four participants carried the c.521CC genotype, and 2-hydroxyatorvastatin exposure was 100 percent greater in the same comparison.
- organism
- 32 healthy volunteers, 4 with c.521CC, 12 with c.521TC and 16 with c.521TT
- plain_language
- Volunteers with the SLCO1B1 c.521CC genotype had 144 percent greater plasma atorvastatin exposure than those with the c.521TT genotype.
- primary_references
- Different effects of SLCO1B1 polymorphism on the pharmacokinetics of atorvastatin and rosuvastatin. (2007). https://pubmed.ncbi.nlm.nih.gov/17473846/ DOI: 10.1038/sj.clpt.6100220
- route
- Oral
- tissue
- Plasma atorvastatin area under the concentration-time curve from 0 to 48 hours
OATP1B1 activity and statin exposure: the step between transporter inhibition and drug concentration (2026-09-22) · lines 35–44
Original AI-assisted curation of four primary studies resolved by PubMed title search and cross-checked against live PubMed metadata. Three of the four share one research group and are recorded as one line of evidence. Study-specific citations, doses and limitations retained. Not publisher full text. · supports · · source_derived_draft · unverified_draft
## slco1b1-c521cc-raises-atorvastatin-exposure Volunteers with the SLCO1B1 c.521CC genotype had 144 percent greater plasma atorvastatin exposure than those with the c.521TT genotype. Model/species: 32 healthy volunteers, 4 with c.521CC, 12 with c.521TC and 16 with c.521TT Tissue/system: Plasma atorvastatin area under the concentration-time curve from 0 to 48 hours Exposure: Single 20 mg oral atorvastatin dose Route: Oral Duration: Single dose with 48-hour sampling Limits: Only four participants carried the c.521CC genotype, and 2-hydroxyatorvastatin exposure was 100 percent greater in the same comparison. Primary reference: Different effects of SLCO1B1 polymorphism on the pharmacokinetics of atorvastatin and rosuvastatin. (2007). https://pubmed.ncbi.nlm.nih.gov/17473846/ DOI: 10.1038/sj.clpt.6100220 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
Complete structured claim and evidenceThe same SLCO1B1 c.521CC genotype raised rosuvastatin exposure by 65 percent, a smaller effect than on atorvastatin, which the authors describe as unexpected for the more hydrophilic statin.
Experimental context and source evidence
- duration
- Single dose with 48-hour sampling
- evidence_access
- Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
- experimental_model
- The same 32 healthy volunteers
- exposure
- Single 10 mg oral rosuvastatin dose, one week apart from the atorvastatin dose
- limitations
- A within-study comparison of two statins at different doses, so the ratio of effects is not a dose-matched comparison.
- organism
- The same 32 healthy volunteers
- plain_language
- The same SLCO1B1 c.521CC genotype raised rosuvastatin exposure by 65 percent, a smaller effect than on atorvastatin, which the authors describe as unexpected for the more hydrophilic statin.
- primary_references
- Different effects of SLCO1B1 polymorphism on the pharmacokinetics of atorvastatin and rosuvastatin. (2007). https://pubmed.ncbi.nlm.nih.gov/17473846/ DOI: 10.1038/sj.clpt.6100220
- route
- Oral
- tissue
- Plasma rosuvastatin area under the concentration-time curve and peak concentration
OATP1B1 activity and statin exposure: the step between transporter inhibition and drug concentration (2026-09-22) · lines 46–55
Original AI-assisted curation of four primary studies resolved by PubMed title search and cross-checked against live PubMed metadata. Three of the four share one research group and are recorded as one line of evidence. Study-specific citations, doses and limitations retained. Not publisher full text. · supports · · source_derived_draft · unverified_draft
## slco1b1-c521cc-raises-rosuvastatin-exposure-less The same SLCO1B1 c.521CC genotype raised rosuvastatin exposure by 65 percent, a smaller effect than on atorvastatin, which the authors describe as unexpected for the more hydrophilic statin. Model/species: The same 32 healthy volunteers Tissue/system: Plasma rosuvastatin area under the concentration-time curve and peak concentration Exposure: Single 10 mg oral rosuvastatin dose, one week apart from the atorvastatin dose Route: Oral Duration: Single dose with 48-hour sampling Limits: A within-study comparison of two statins at different doses, so the ratio of effects is not a dose-matched comparison. Primary reference: Different effects of SLCO1B1 polymorphism on the pharmacokinetics of atorvastatin and rosuvastatin. (2007). https://pubmed.ncbi.nlm.nih.gov/17473846/ DOI: 10.1038/sj.clpt.6100220 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
Complete structured claim and evidenceVolunteers with the SLCO1B1 c.521CC genotype had 221 percent greater plasma exposure to active simvastatin acid than those with the c.521TT genotype.
Experimental context and source evidence
- duration
- Single dose with 12-hour sampling
- evidence_access
- Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
- experimental_model
- 4 volunteers with c.521CC, 12 with c.521TC and 16 with c.521TT
- exposure
- Single 40 mg oral simvastatin dose
- limitations
- Peak concentration was 200 percent higher and occurred earlier in c.521CC carriers; the four-carrier group is small.
- organism
- 4 volunteers with c.521CC, 12 with c.521TC and 16 with c.521TT
- plain_language
- Volunteers with the SLCO1B1 c.521CC genotype had 221 percent greater plasma exposure to active simvastatin acid than those with the c.521TT genotype.
- primary_references
- SLCO1B1 polymorphism markedly affects the pharmacokinetics of simvastatin acid. (2006). https://pubmed.ncbi.nlm.nih.gov/17108811/ DOI: 10.1097/01.fpc.0000230416.82349.90
- route
- Oral
- tissue
- Plasma simvastatin lactone and active simvastatin acid
OATP1B1 activity and statin exposure: the step between transporter inhibition and drug concentration (2026-09-22) · lines 57–66
Original AI-assisted curation of four primary studies resolved by PubMed title search and cross-checked against live PubMed metadata. Three of the four share one research group and are recorded as one line of evidence. Study-specific citations, doses and limitations retained. Not publisher full text. · supports · · source_derived_draft · unverified_draft
## slco1b1-c521cc-raises-simvastatin-acid-exposure Volunteers with the SLCO1B1 c.521CC genotype had 221 percent greater plasma exposure to active simvastatin acid than those with the c.521TT genotype. Model/species: 4 volunteers with c.521CC, 12 with c.521TC and 16 with c.521TT Tissue/system: Plasma simvastatin lactone and active simvastatin acid Exposure: Single 40 mg oral simvastatin dose Route: Oral Duration: Single dose with 12-hour sampling Limits: Peak concentration was 200 percent higher and occurred earlier in c.521CC carriers; the four-carrier group is small. Primary reference: SLCO1B1 polymorphism markedly affects the pharmacokinetics of simvastatin acid. (2006). https://pubmed.ncbi.nlm.nih.gov/17108811/ DOI: 10.1097/01.fpc.0000230416.82349.90 Access: Primary PubMed abstract and indexed metadata reviewed. Full-text method details not stated here remain unresolved.
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.