دورية أكاديمية
Gymnema montanum improves endothelial function via inhibition of endoplasmic reticulum stress by activating Nrf2 signaling
| العنوان: | Gymnema montanum improves endothelial function via inhibition of endoplasmic reticulum stress by activating Nrf2 signaling |
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| المؤلفون: | Dornadula Sireesh, Natarajan Suganya, Suvro Chatterjee, Kunka Mohanram Ramkumar |
| المصدر: | Asian Pacific Journal of Tropical Biomedicine, Vol 10, Iss 8, Pp 379-386 (2020) |
| بيانات النشر: | Wolters Kluwer Medknow Publications, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Arctic medicine. Tropical medicine LCC:Biology (General) |
| مصطلحات موضوعية: | er stress, gymnema montanum, nrf2, endothelial cells, Arctic medicine. Tropical medicine, RC955-962, Biology (General), QH301-705.5 |
| الوصف: | Objective: To investigate the effects of Gymnema montanum leaf extract against endoplasmic reticulum (ER) stress-induced toxicity in endothelial cells. Methods: The immortalized endothelial hybrid cell, EA.hy926 was treated with different concentrations of Gymnema montanum leaf extract (0-100 μg/mL) and the ER stress inducer, tunicamycin. The cytotoxicity was assessed by MTT as well as lactate dehydrogenase and malondialdehyde levels were determined. The levels of ER stress markers, GRP78 and CHOP were analysed by Western blot assay. The Gymnema montanum leaf extract-mediated activation of nuclear factor erythroid 2-related factor 2 (Nrf2) was assessed by cell-based luciferase enzyme fragment complementation assay and antioxidant responsive element driven luciferase reporter assay. The levels of phosphoproteins of the MAPK pathway were analyzed using the Bioplex system. Results: A dose-dependent cytoprotective effect of Gymnema montanum leaf extract was observed in tunicamycin-induced toxicity. Gymnema montanum leaf extract significantly reduced lactate dehydrogenase activity and malondialdehyde levels in ER stress-induced endothelial cells. It also suppressed ER stress markers dose dependently and inhibited the phosphorylation of JNK, ERK, MEK and p38 MAPK in tunicamycin-induced endothelial cells. Moreover, Gymnema montanum leaf extract increased the expression of Nrf2 and its downstream targets in endothelial cells. Conclusions: Gymnema montanum leaf extract attenuates ER stress by increasing the expression of Nrf2 and its downstream genes. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2221-1691 2588-9222 |
| Relation: | http://www.apjtb.org/article.asp?issn=2221-1691;year=2020;volume=10;issue=8;spage=379;epage=386;aulast=Sireesh; https://doaj.org/toc/2221-1691; https://doaj.org/toc/2588-9222 |
| DOI: | 10.4103/2221-1691.287164 |
| URL الوصول: | https://doaj.org/article/85ca84d0dc6340b8afdc7e18497a5156 |
| رقم الأكسشن: | edsdoj.85ca84d0dc6340b8afdc7e18497a5156 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 22211691 25889222 |
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| DOI: | 10.4103/2221-1691.287164 |