| Autor: |
A. S. Isoyan, K. V. Simonyan, R. M. Simonyan, M. A. Babayan, G. M. Simonyan, V. A. Chavushyan, M. A. Simonyan |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
BMC Complementary and Alternative Medicine, Vol 19, Iss 1, Pp 1-7 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1472-6882 |
| DOI: |
10.1186/s12906-019-2500-1 |
| Popis: |
Abstract Background Stevia rebaudiana Bertoni has various pharmacological actions, which includes antidiabetic, antioxidant, anti-inflammatory activities. The superoxide and consequently NADPH oxidase (Nox) are relevant targets involved in biological effects of Stevia. The presence of NADPH-containing superoxide-producing lipoprotein (suprol) in Stevia leaves has not yet been tested. The mechanism of producing superoxide radicals (O2 −) by suprol was determined in vitro, which is associated with the electron transfer from NADPH in the composition of suprol by traces of transition metal ions (Fe3+ or Cu2+) to molecular oxygen, turning it into O2 −. It is expected that the therapeutic efficacy of Stevia leaves is caused by specific activity of superoxide-producing lipoprotein fraction. Methods For the first time, from the dry leaves of Stevia the NADPH-containing superoxide-producing lipoprotein was isolated and purified. The specific content of suprol (milligrams in 1 g of Stevia leaves- mg/g) was determined after desalination of suprol and lyophilization. Results According to the method provided, the specific content of the isolated suprol from Stevia’s leaves was up to 4.5 ± 0.2 mg / g (yields up to 68.5 ± 4.7%, p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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