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Record W2028979926 · doi:10.1159/000169281

Excitation-Contraction Coupling in Heart

2008· article· en· W2028979926 on OpenAlex
N. S. Dhalla, Dennis B. McNamara, P V Sulakhe

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

VenueCardiology · 2008
Typearticle
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicMitochondrial Function and Pathology
Canadian institutionsUniversity of Manitoba
Fundersnot available
KeywordsEndoplasmic reticulumCalciumMitochondrionATP hydrolysisChemistryCalcium ATPaseContraction (grammar)BiophysicsBiochemistryRyanodine receptor 2ATPaseBiologyEndocrinologyEnzymeRyanodine receptor

Abstract

fetched live from OpenAlex

On perfusing the isolated rat heart with a medium containing Ca45, mitochondrial fraction was found to contain more radioactivity than sarcoplasmic reticulum. Not only the calcium contents of mitochondria were higher but also the specific activity of calcium pool of mitochondria was greater than that of the sarcoplasmic reticulum. The in vitro studies revealed that during 10 min of incubation mitochondria accumulated more calcium and hydrolyzed less ATP in comparison to the sarcoplasmic reticulum. Calcium accumulation and ATP hydrolysis by mitochondria were markedly inhibited by 5 mMazide. On the other hand, azide had a slight inhibitory action on the ATPase activity of sarcoplasmic reticulum but did not influence its ability to bind calcium. On the basis of 1 min calcium binding values, total mitochondria and sarcoplasmic reticulum present in the heart are considered to accumulate 0.395 and 0.085 µmol of calcium/g of heart. It is suggested that free calcium concentration in the heart is determined mainly by the activities of mitochondria, sarcoplasmic reticulum, contractile proteins and movements across the cell membrane.

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)0.000
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 score0.801
Threshold uncertainty score0.296

Codex and Gemma teacher scores by category

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)0.0000.000

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 head0.020
GPT teacher head0.257
Teacher spread0.237 · 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