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Record W2097579273 · doi:10.1093/jac/46.6.1009

Expression of the carbapenemase gene (cfiA) in Bacteroides fragilis

2000· article· en· W2097579273 on OpenAlexafffund
Richard Edwards

Bibliographic record

VenueJournal of Antimicrobial Chemotherapy · 2000
Typearticle
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicBacterial Identification and Susceptibility Testing
Canadian institutionsQueen's University
FundersCanadian Food Inspection Agency
KeywordsBacteroides fragilisMicrobiologyBiologyImipenemCarbapenemMeropenemPromoterGeneAntibiotic resistanceAntibioticsGene expressionGenetics

Abstract

fetched live from OpenAlex

Bacteroides fragilis strains were studied to examine carbapenemase gene (cfiA) expression and insertion sequence (IS) element promoters. High-level resistance was associated with high meropenemase activity and IS elements upstream of cfiA. Sequencing revealed two element types; IS1187 and elements related to IS942 and IS1170. The latter was implicated in the conversion to carbapenem resistance in a cfiA-positive isolate during imipenem therapy. Two strains showing low-level resistance, and strains susceptible to meropenem, did not possess IS elements upstream of cfiA. The prevalence in Nottingham of clinical isolates of B. fragilis with cfiA and efficient IS element promoters was low (0.6%).

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.003
Threshold uncertainty score0.007

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
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)0.0010.000

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 head0.007
GPT teacher head0.230
Teacher spread0.223 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations49
Published2000
Admission routes2
Has abstractyes

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