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Record W2011677651 · doi:10.1159/000240446

Relationship between Maternal Progesterones and the Delayed Drug Metabolism in the Neonate

2009· article· en· W2011677651 on OpenAlex

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.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueBiology of the Neonate · 2009
Typearticle
Languageen
FieldChemistry
TopicChemical Reaction Mechanisms
Canadian institutionsSheridan College
FundersNational Research Council CanadaMedical Research Council Canada
KeywordsEndocrinologyInternal medicineMicrosomeDrug metabolismFetusMetabolismEnzymePregnanediolTestosterone (patch)BiologyChemistryPregnancyMedicineBiochemistryHormone

Abstract

fetched live from OpenAlex

The relationship between maternal progesterones and the delayed drug metabolism in the rat neonate was studied with special emphasis on maternal inhibitory substances and their role in the functional development of the endoplasmic reticulum of the neonate. Incubation of liver homogenates and microsomes obtained from fetuses removed by cesarean section 1-3 days before birth indicated the presence of enzymes involved in progesterone metabolism namely 16 alpha- and 6 beta-hydroxylases and delta 4 - 5 alpha-hydrogenase. Enzyme activities determined on liver microsomes of nonpregnant and pregnant rats indicated low 6 beta-hydroxylase activity in both groups and an increase in 5 alpha-hydrogenase in the pregnant when compared to the nonpregnant (p less than . 05 or greater) rats. Weaning 2-week-old rats resulted in an increase in progesterone 16 alpha- and 16 beta-hydroxylase and coumarin 3-hydroxylase activities; however treatment with 5 beta-pregnanediol or 5 beta-pregnanolone prevented these increases. Estradiol or testosterone did not affect these activities. It was concluded that since separation of the neonate from the mother brings about an increase in drug and progesterone hydroxylation it is possible that the low activity of drug metabolizing enzymes of the fetus and neonate is connected with reduced progesterone metabolites originated from the mother.

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 score0.195
Threshold uncertainty score0.243

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 science0.0010.000
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 head0.018
GPT teacher head0.260
Teacher spread0.242 · 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