Asymmetric dimethyl arginine induces pulmonary vascular dysfunction via activation of signal transducer and activator of transcription 3 and stabilization of hypoxia-inducible factor 1-alpha
Language English Country United States Media print-electronic
Document type Comparative Study, Journal Article, Research Support, Non-U.S. Gov't
PubMed
26091577
DOI
10.1016/j.vph.2015.06.005
PII: S1537-1891(15)00136-6
Knihovny.cz E-resources
- Keywords
- Asymmetric dimethyl arginine, Human pulmonary artery endothelial cell, Human pulmonary artery smooth muscle cell, Hypoxia, Pulmonary hypertension,
- MeSH
- Amidohydrolases metabolism MeSH
- Arginine analogs & derivatives pharmacology MeSH
- Pulmonary Artery drug effects metabolism physiopathology MeSH
- Endothelial Cells drug effects metabolism MeSH
- Hypoxia-Inducible Factor 1, alpha Subunit metabolism MeSH
- Cell Hypoxia MeSH
- Cells, Cultured MeSH
- Humans MeSH
- Inflammation Mediators metabolism MeSH
- Intercellular Adhesion Molecule-1 metabolism MeSH
- Myocytes, Smooth Muscle drug effects metabolism MeSH
- Nitric Oxide metabolism MeSH
- Hypertension, Pulmonary etiology metabolism physiopathology MeSH
- Cell Proliferation drug effects MeSH
- Signal Transduction drug effects MeSH
- Muscle, Smooth, Vascular drug effects metabolism physiopathology MeSH
- Nitric Oxide Synthase Type III metabolism MeSH
- STAT3 Transcription Factor metabolism MeSH
- Calcium metabolism MeSH
- Dose-Response Relationship, Drug MeSH
- Check Tag
- Humans MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Comparative Study MeSH
- Names of Substances
- Amidohydrolases MeSH
- Arginine MeSH
- dimethylargininase MeSH Browser
- Hypoxia-Inducible Factor 1, alpha Subunit MeSH
- HIF1A protein, human MeSH Browser
- ICAM1 protein, human MeSH Browser
- Inflammation Mediators MeSH
- Intercellular Adhesion Molecule-1 MeSH
- N,N-dimethylarginine MeSH Browser
- NOS3 protein, human MeSH Browser
- Nitric Oxide MeSH
- STAT3 protein, human MeSH Browser
- Nitric Oxide Synthase Type III MeSH
- STAT3 Transcription Factor MeSH
- Calcium MeSH
Pulmonary hypertension (PH), associated with imbalance in vasoactive mediators and massive remodeling of pulmonary vasculature, represents a serious health complication. Despite the progress in treatment, PH patients typically have poor prognoses with severely affected quality of life. Asymmetric dimethyl arginine (ADMA), endogenous inhibitor of endothelial nitric oxide synthase (eNOS), also represents one of the critical regulators of pulmonary vascular functions. The present study describes a novel mechanism of ADMA-induced dysfunction in human pulmonary endothelial and smooth muscle cells. The effect of ADMA was compared with well-established model of hypoxia-induced pulmonary vascular dysfunction. It was discovered for the first time that ADMA induced the activation of signal transducer and activator of transcription 3 (STAT3) and stabilization of hypoxia inducible factor 1α (HIF-1α) in both types of cells, associated with drastic alternations in normal cellular functions (e.g., nitric oxide production, cell proliferation/Ca(2+) concentration, production of pro-inflammatory mediators, and expression of eNOS, DDAH1, and ICAM-1). Additionally, ADMA significantly enhanced the hypoxia-mediated increase in the signaling cascades. In summary, increased ADMA may lead to manifestation of PH phenotype in human endothelial and smooth muscle cells via the STAT3/HIF-1α cascade. Therefore this signaling pathway represents the potential pathway for future clinical interventions in PH.
References provided by Crossref.org
