Continuous inhalation of carbon monoxide attenuates hypoxic pulmonary hypertension development presumably through activation of BK channels
Why this work is in the frame
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Bibliographic record
Abstract
OBJECTIVE: We tested the hypothesis that inhalation of a low concentration of exogenous carbon monoxide (CO) attenuates the development of hypoxic pulmonary artery hypertension by activation of large-conductance voltage and Ca(2+)-activated K(+) channels (BK(Ca)). METHODS: The BK(Ca) activity was measured using whole-cell and inside-out patch clamp recordings in Wistar rat pulmonary artery (PA) myocytes. Pulmonary artery pressures were measured in vivo and membrane potentials were recorded in vitro in pressurized resistance arteries. RESULTS: Chronic CO inhalation slightly increases single-channel conductance of BK(Ca) channels and induces a large increase in the sensitivity of BK(Ca) channels to Ca(2+) of PA myocytes from normoxic and chronic hypoxic rats. Consequently, BK(Ca) currents are increased and play a more prominent role in controlling resting membrane potential of PA myocytes. Chronic CO inhalation also reduces hemodynamic changes induced by chronic hypoxia and attenuates hypoxic pulmonary artery hypertension. CONCLUSION: Chronic inhalation of CO attenuates hypoxic pulmonary artery hypertension development presumably through activation of BK(Ca) channels. These results highlight the potential use of CO as a novel avenue for research on the treatment of pulmonary artery hypertension (PAHT) in a similar manner to another gasotransmitter, nitric oxide.
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Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it