ArticleBiochimica et biophysica acta2014
Upregulation of cardioprotective SUR2A by sub-hypoxic drop in oxygen.
Article in Biochimica et biophysica acta, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed.
- Cardioprotective Signaling: Outline and Future Directions.Biomedicines · 2025Review
- Glutathione Upregulates the Expression of KBioMed research international · 2023Article
- Increase in cardioprotective SUR2A does not alter heart rate and heart rate regulation by physical activity and diurnal rhythm.Journal of basic and clinical physiology and pharmacology · 2022Article
- SUR2A as a base for cardioprotective therapeutic strategies.Molecular biology reports · 2022Review
- Cardiac dysfunction in spontaneously hypertensive old rats is associated with a significant decrease of SUR2 expression.Molecular and cellular biochemistry · 2021Article
- Cardioprotection by isosteviol derivate JC105: A unique drug property to activate ERK1/2 only when cells are exposed to hypoxia-reoxygenation.Journal of cellular and molecular medicine · 2020Article
- Pyrazinamide may possess cardioprotective properties.The Journal of antibiotics · 2019Article
- Insulin down-regulates cardioprotective SUR2A in the heart-derived H9c2 cells: A possible explanation for some adverse effects of insulin therapy.Biochemistry and biophysics reports · 2018Article
- Exposure to 15% oxygen in vivo up-regulates cardioprotective SUR2A without affecting ERK1/2 and AKT: a crucial role for AMPK.Journal of cellular and molecular medicine · 2017Article
- Cardioprotection with halogenated gases: how does it occur?Drug design, development and therapy · 2017Review
- Neuroprotective Strategies during Cardiac Surgery with Cardiopulmonary Bypass.International journal of molecular sciences · 2016Review
- Anti-Apoptotic and Pro-Survival Effect of Alpinate Oxyphyllae Fructus (AOF) in a d-Galactose-Induced Aging Heart.International journal of molecular sciences · 2016Article
- A spontaneous increase in intracellular Ca2+ in metaphase II human oocytes in vitro can be prevented by drugs targeting ATP-sensitive K+ channels.Human reproduction (Oxford, England) · 2016Article
- Phenylephrine preconditioning in embryonic heart H9c2 cells is mediated by up-regulation of SUR2B/Kir6.2: A first evidence for functional role of SUR2B in sarcolemmal KATP channels and cardioprotection.The international journal of biochemistry & cell biology · 2016Article
- CREB Negatively Regulates IGF2R Gene Expression and Downstream Pathways to Inhibit Hypoxia-Induced H9c2 Cardiomyoblast Cell Death.International journal of molecular sciences · 2015Article
- Mild hypoxia in vivo regulates cardioprotective SUR2A: A role for Akt and LDH.Biochimica et biophysica acta · 2015Article
- A link between ATP and SUR2A: A novel mechanism explaining cardioprotection at high altitude.International journal of cardiology · 2015Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
The effects of hypoxia on gene expression have been vigorously studied, but possible effects of small changes in oxygen tension have never been addressed. SUR2A is an atypical ABC protein serving as a regulatory subunit of sarcolemmal ATP-sensitive K(+) (KATP) channels. Up-regulation of SUR2A is associated with cardioprotection and improved physical endurance. Here, we have found that a 24h-long exposure to slightly decreased ambient fractional concentration of oxygen (20% oxygen), which is an equivalent to oxygen tension at 350m above sea level, significantly increased levels of SUR2A in the heart despite that this drop of oxygen did not affect levels of O2, CO2 and hematocrit in the blood or myocardial levels of ATP, lactate and NAD/NADH/NAD(+). Hearts from mice exposed to 20% oxygen were significantly more resistant to ischaemia-reperfusion when compared to control ones. Decrease in fractional oxygen concentration of just 0.9% was associated with phosphorylation of ERK1/2, but not Akt, which was essential for up-regulation of SUR2A. These findings indicate that a small drop in oxygen tension up-regulates SUR2A in the heart by activating ERK signaling pathway. This is the first report to suggest that a minimal change in oxygen tension could have a profound signaling effect.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.