ArticleActa pharmacologica Sinica2009
Adenosine 5'-triphosphate stimulates the increase of TGF-beta1 in rat mesangial cells under high-glucose conditions via reactive oxygen species and ERK1/2.
Article in Acta pharmacologica Sinica, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 9 citations in OpenAlex.
- Article
- A novel definition and treatment of hyperinflammation in COVID-19 based on purinergic signalling.Purinergic signalling · 2022Review
- Alveolar Dynamics and Beyond - The Importance of Surfactant Protein C and Cholesterol in Lung Homeostasis and Fibrosis.Frontiers in physiology · 2020Review
- Purinergic signalling links mechanical breath profile and alveolar mechanics with the pro-inflammatory innate immune response causing ventilation-induced lung injury.Purinergic signalling · 2017Review
- Purinergic signalling in the kidney in health and disease.Purinergic signalling · 2014Review
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Authors and funding
7 authors at 3 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
aimTo investigate the role of adenosine 5'-triphosphate (ATP)-induced generation of reactive oxygen species (ROS) and phosphorylation of extracellular signal-regulated kinase 1/2 (ERK1/2) in the production of transforming growth factor-beta1 (TGF-beta1) in cultured rat glomerular mesangial cells under high-glucose conditions.
methodsSubconfluent glomerular mesangial cells were serum-starved for 24 h and pretreated with suramin, diphenylenechloride iodonium (DPI) or PD98059 followed by stimulation with a high concentration of glucose (30 mmol/L D-glucose) or ATP (300 micromol/L). Extracellular and total ATP and ROS production were detected using commercially available kits. Phosphorylation of ERK1/2 was evaluated by Western blot. TGF-beta1 mRNA expression was examined by real-time PCR.
resultsSuramin had a dose-dependent inhibitory effect on the generation of ROS induced by high glucose. Extracellular ATP production by mesangial cells increased markedly after a 2-h incubation with high glucose. ROS production was upregulated in mesangial cells after 5 min incubation with 300 micromol/L ATP and was sustained for 120 min. ERK1/2 was significantly activated after 5 min incubation of mesangial cells with ATP, this activation was partially inhibited by DPI. The effects of high glucose on TGF-beta1 mRNA were markedly inhibited by suramin, DPI or PD98059.
conclusionOur results suggest that a high concentration of glucose increases the extracellular levels of ATP in mesangial cells within a short time-frame. ATP, in turn, activates ERK1/2, an effect which is at least partially dependent on ROS, which results in the upregulation of TGF-beta1.
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