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Record W2885787442 · doi:10.1002/dta.2478

Erythropoietic effects of low‐dose cobalt application

2018· article· en· W2885787442 on OpenAlex
Torben Hoffmeister, Dirk Schwenke, Nadine Wachsmuth, Oliver Krug, Mario Thevis, William C. Byrnes, Walter Schmidt

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.

fundA Canadian funder is recorded on the work.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueDrug Testing and Analysis · 2018
Typearticle
Languageen
FieldMedicine
TopicErythropoietin and Anemia Treatment
Canadian institutionsnot available
FundersWorld Anti-Doping Agency
KeywordsDoseUrinePlaceboErythropoiesisMedicineErythropoietinOral administrationInternal medicineIngestionEndocrinologyAnemia

Abstract

fetched live from OpenAlex

Abstract Cobaltous ions (Co 2+ ) stabilize HIFα, increase endogenous erythropoietin (EPO) production, and may, therefore, be used as a performance‐enhancing substance. To date, the dosage necessary to stimulate erythropoiesis is unknown. The aim of this study was, therefore, to determine the minimum dosage necessary to increase erythropoietic processes. In a first double‐blind placebo‐controlled study ( n = 5), single oral Co 2+ dosages of 5 mg ( n = 6) and 10 mg ( n = 7) were administered to healthy young men. Cubital venous blood and urine samples were collected before and up to 24 hours after Co 2+ administration. In a second study, the same daily Co 2+ dosages were administered for five days (placebo: n = 5, 5 mg: n = 9, 10 mg: n = 7). Blood and urine samples were taken the day before administration and at day 3 and day 5. Plasma [EPO] was elevated by 20.5 ± 16.9% at 5 hours after the single 5‐mg administration ( p < 0.05) and by 52.8 ± 23.5% up to 7 hours following the 10‐mg Co 2+ administration ( p < 0.001). Urine [Co 2+ ] transiently increased, with maximum values 3–5 hours after Co 2+ ingestion (5 mg: from 0.8 ± 1.1 to 153.6 ± 109.4 ng/mL, 10 mg: from 1.3 ± 1.7 to 338.0 ± 231,5 ng/mL). During the five days of Co 2+ application, 5 mg showed a strong tendency to increase [EPO], while the 10‐mg application significantly increased [EPO] at day 5 by 27.2 ± 26.4% ( p < 0.05) and the immature reticulocyte fraction by 49.9 ± 21.7% ( p < 0.01). [Ferritin] was decreased by 12.4 ± 10.4 ng/mL ( p < 0.05). An oral Co 2+ dosage of 10 mg/day exerts clear erythropoietic effects, and 5 mg/day tended to increase plasma EPO concentration.

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: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.094
Threshold uncertainty score0.362

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
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 head0.009
GPT teacher head0.267
Teacher spread0.258 · 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