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Record W2411333350 · doi:10.1385/1-59259-998-2:153

Use of 7-Ethoxycoumarin to Monitor Multiple Enzymes in the Human CYP1, CYP2, and CYP3 Families

2006· article· en· W2411333350 on OpenAlex
David J. Waxman, Thomas K. H. Chang

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueHumana Press eBooks · 2006
Typearticle
Languageen
FieldPharmacology, Toxicology and Pharmaceutics
TopicPharmacogenetics and Drug Metabolism
Canadian institutionsUniversity of British Columbia
FundersNational Institute of Environmental Health SciencesNational Institutes of HealthNational Institute for Health and Care Research
KeywordsCytochrome P450EnzymeMicrosomeSubstrate (aquarium)BiochemistryComplementary DNAChemistryCytochromeIncubationChromatographyBiologyGene

Abstract

fetched live from OpenAlex

7-Ethoxycoumarin is metabolized by many cytochrome P450 enzymes active in foreign compound metabolism and has been used as a prototypic substrate to monitor P450 (P450) activity in both hepatic and extrahepatic tissues. A spectrofluorometric method is described for determination of P450-catalyzed 7-ethoxycoumarin O-deethylation. Following acidification of the incubation mixture, the enzymatic product, 7-hydroxycoumarin, is recovered by a double-extraction procedure and measured at an excitation wavelength of 370 nm and an emission wavelength of 450 nm. This method is applicable to enzymatic studies to determine the catalytic activity of cDNA-expressed human enzymes in the CYP1, CYP2, and CYP3 families, and 7-ethoxycoumarin O-deethylation activity in microsomes isolated from liver and other tissues.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.623
Threshold uncertainty score0.861

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.252
GPT teacher head0.432
Teacher spread0.180 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it