scholarly journals Protective Effect of Ocotillol, the Derivate of Ocotillol-Type Saponins in Panax Genus, against Acetic Acid-Induced Gastric Ulcer in Rats Based on Untargeted Metabolomics

2020 ◽  
Vol 21 (7) ◽  
pp. 2577 ◽  
Author(s):  
Cuizhu Wang ◽  
Yuze Yuan ◽  
He Pan ◽  
Alan Chen-Yu Hsu ◽  
Jinluan Chen ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Acetic Acid ◽  
Gastric Ulcer ◽  
Growth Factor ◽  
Gastric Mucosa ◽  
Epidermal Growth Factor ◽  
Serum Levels ◽  
Gastroprotective Effect ◽  
Epidermal Growth ◽  
Oxide Synthase

Gastric ulcer (GU), a prevalent digestive disease, has a high incidence and is seriously harmful to human health. Finding a natural drug with a gastroprotective effect is needed. Ocotillol, the derivate of ocotillol-type saponins in the Panax genus, possesses good anti-inflammatory activity. The study aimed to investigate the gastroprotective effect of ocotillol on acetic acid-induced GU rats. The serum levels of endothelin-1 (ET-1) and nitric oxide (NO), the gastric mucosa levels of epidermal growth factor, superoxide dismutase and NO were assessed. Hematoxylin and eosin staining of gastric mucosa for pathological changes and immunohistochemical staining of ET-1, epidermal growth factor receptors and inducible nitric oxide synthase were evaluated. A UPLC-QTOF-MS-based serum metabolomics approach was applied to explore the latent mechanism. A total of 21 potential metabolites involved in 7 metabolic pathways were identified. The study helps us to understand the pathogenesis of GU and to provide a potential natural anti-ulcer agent.

scholarly journals Epidermal growth factor inhibits cytokine-dependent nitric oxide synthase expression in hepatocytes

FEBS Letters ◽  
1995 ◽  
Vol 368 (1) ◽  
pp. 193-196 ◽  
Author(s):  
Fulvia Terenzi ◽  
Marta Casado ◽  
Paloma Martin-Sanz ◽  
Lisardo Boscá
Keyword(s):  
Nitric Oxide ◽  
Growth Factor ◽  
Nitric Oxide Synthase ◽  
Epidermal Growth Factor ◽  
Epidermal Growth ◽  
Oxide Synthase

scholarly journals Inhibitory Effect of Flavonoid Extract of Lotus Leaf on Alcohol-Induced Gastric Injury by Antioxidant Capacity in Mice

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Yi Chen ◽  
Qin Li ◽  
Zhiping Kuang ◽  
Xin Zhao ◽  
Ruokun Yi ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Growth Factor ◽  
Nitric Oxide Synthase ◽  
Epidermal Growth Factor ◽  
Antioxidant Capacity ◽  
Inhibitory Effect ◽  
Gastric Injury ◽  
Lotus Leaf ◽  
Epidermal Growth ◽  
Oxide Synthase

The aim of this study was to investigate the antioxidant effects of flavonoid extract of lotus leaf (FELL) in vitro and in mice with gastric injury and elucidate the inhibitory effect of FELL on alcohol-induced gastric injury by antioxidant capacity. Gastric juice volume and acid value were measured in the established alcohol-induced acute gastric injury model in mice. Hematoxylin and eosin staining demonstrated the morphological changes in the gastric mucosa. FELL improved the alcohol-induced gastric lesions. Serological testing results showed that FELL significantly increased the levels of superoxide dismutase (SOD), catalase (CAT), glutathione (GSH), and nitric oxide (NO) and significantly reduced the levels of MDA and MPO in mice with gastric injury. Besides, FELL significantly reduced the levels of interleukin 6 (IL-6), interleukin 12 (IL-12), tumor necrosis factor alpha (TNF-α), and interferon gamma (IFN-γ). The quantitative polymerase chain reaction (qPCR) and Western blot results proved that FELL upregulated the mRNA and protein expressions of SOD1, SOD2, CAT, epidermal growth factor (EGF), vascular endothelial growth factor (VEGF), epidermal growth factor receptor (EGFR), neuronal nitric oxide synthase (nNOS), and endothelial nitric oxide synthase (eNOS) and downregulated the expression of inducible nitric oxide synthase (iNOS) in the gastric tissue of mice with gastric injury. Five compounds, including kaempferitrin, hyperoside, astragalin, phloridzin, and quercetin, were detected in FELL using high-performance liquid chromatography. Thus, FELL has an inhibitory effect on experimental alcohol-induced gastric injury because of the antioxidant capacity of the five compounds. Its effect increases as the FELL concentration increases, which is close to that of ranitidine. FELL, which is an active substance, provides a good gastroprotective effect.

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