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- Title
Catalpol ameliorates advanced glycation end product‐induced dysfunction of glomerular endothelial cells via regulating nitric oxide synthesis by inducible nitric oxide synthase and endothelial nitric oxide synthase.
- Authors
Sun, Weixiang; Gao, Yuyan; Ding, Yushi; Cao, Ying; Chen, Jing; Lv, Gaohong; Lu, Jinfu; Yu, Bin; Peng, Meilin; Xu, Huiqin; Sun, Yun
- Abstract
Catalpol (Cat.) is an iridoid glucoside extracted from the root of Rehmannia glutinosa Libosch. In this study, we investigated whether Cat. could protect the mouse glomerular endothelial cells against the deleterious effect induced by advanced glycation end products (AGEs) and explored potential mechanisms. We found that 10 μM Cat. showed a protective effect on dead cells stimulated by AGEs. Cat. significantly decreased the expression of p‐NF‐κBp65 and inducible nitric oxide synthase (iNOS) and increased the expression of phosphorylated‐endothelial nitric oxide synthase (p‐eNOS; Ser1177), PI3K, p‐Akt (Thr308), and total‐Akt. Moreover, Cat. restored the integrity of glomerular endothelial barrier by increasing endothelial tight gap junction protein and ameliorated the endothelial hyperpermeability induced by AGEs via modulating the nitric oxide (NO) production. Additionally, Cat. attenuated the massive release of NO induced by AGEs, inhibiting the macrophage infiltration by modulating the NO production, accompanied by the decrease in the release of monocyte chemoattractant protein‐1 and intercellular cell adhesion molecule‐1 in vitro. Therefore, Cat. ameliorated AGEs‐induced endothelial dysfunction via inhibiting the NF‐κB/iNOS pathway and activating the PI3K/Akt/eNOS pathway. © 2019 IUBMB Life, 71(9):1268–1283, 2019
- Subjects
NITRIC-oxide synthases; CD54 antigen; ADVANCED glycation end-products; ENDOTHELIAL cells; NITRIC oxide; OXIDE synthesis; ENDOTHELIUM diseases
- Publication
IUBMB Life, 2019, Vol 71, Issue 9, p1268
- ISSN
1521-6543
- Publication type
Article
- DOI
10.1002/iub.2032