Evidence for anti-inflammatory and antioxidative properties of dried plum polyphenols in macrophage RAW 264.7 cells
| Autor: | Ajay Kumar, Ji Yao Zhang, Shirin Hooshmand, Sarah A. Johnson, Bahram H. Arjmandi, Sheau C. Chai |
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| Rok vydání: | 2015 |
| Předmět: |
Antioxidant
Lipopolysaccharide medicine.drug_class medicine.medical_treatment Anti-Inflammatory Agents Nitric Oxide Anti-inflammatory Antioxidants Nitric oxide Lipid peroxidation chemistry.chemical_compound Mice Malondialdehyde medicine Animals Food science RAW 264.7 Cells Plant Extracts Macrophages food and beverages Polyphenols General Medicine Prunus domestica chemistry Biochemistry Polyphenol Cyclooxygenase 2 Food Science |
| Zdroj: | Foodfunction. 6(5) |
| ISSN: | 2042-650X |
| Popis: | This study presents the anti-inflammatory and antioxidative properties of dried plum (Prunus domestica L.) polyphenols in macrophage RAW 264.7 cells. We hypothesized that dried plum polyphenols have strong anti-inflammatory and antioxidant properties against lipopolysaccharide (LPS)-induced production of the pro-inflammatory markers, nitric oxide (NO) and cyclooxygenase-2 (COX-2), and the lipid peroxidation product, malondialdehyde, in activated macrophage RAW 264.7 cells. To test this hypothesis, macrophage RAW 264.7 cells were stimulated with either 1 μg ml(-1) (for measurement of NO production) or 1 ng ml(-1) (for measurement of COX-2 expression) of LPS to induce inflammation and were treated with different doses of dried plum polyphenols (0.0, 0.1, 1, 10, 100 and 1000 μg ml(-1)). Dried plum polyphenols at a dose of 1000 μg ml(-1) was able to significantly (P0.05) reduce NO production by 43%. Additionally, LPS-induced expression of COX-2 was significantly (P0.05) reduced by 100 and 1000 μg ml(-1) dried plum polyphenols. To investigate the antioxidant activity of dried plum polyphenols, macrophage RAW 264.7 cells were stimulated with 100 μg ml(-1) of FeSO4 + 1 mM ml(-1) of H2O2 to induce lipid peroxidation. Dried plum polyphenols at a dose of 1000 μg ml(-1) showed a 32% reduction in malondialdehyde production. These findings indicate that dried plum polyphenols are potent anti-inflammatory and antioxidative agents in vitro. |
| Databáze: | OpenAIRE |
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