A New Pyrrolidone Alkaloid and Other Constituents from Rourea oligophlebia Stems

Dinh, Thuc Ngoc; Ha, Mai Vu Thi; Xuan, Luong Ngo; Thi, Huan Trinh; Thi, Huong Nguyen; Ngoc, Mai Nguyen Thi; Huu, Giap Tran; Kim, Oanh Vu Thi; Le, Thanh Nguyen

doi:10.1155/2021/6659106

Cited by 4 publications

(1 citation statement)

References 25 publications

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“…In addition, the genus Rourea is also commonly used in traditional medicine such as R. regusa root for respiratory diseases, R. concolor for kidney disease, and R. mimosoides for bloody diarrhea treatments [10] . Previous studies indicated that the secondary metabolites from R. oligophlebia have antibacterial and cytotoxic properties [9,11] . These results may assist in prescribing oriental traditional medicine, although there is no further scientific evidence from this species.…”

Section: Introductionmentioning

confidence: 96%

Antioxidant, Anti‐Skin‐Aging, Anti‐Inflammatory, and Anti‐Acetylcholinesterase Activities of Rourea oligophlebia Extracts

Buranasudja

Vimolmangkang

Sanookpan

et al. 2023

Chemistry & Biodiversity

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The objective of this study was to evaluate the antioxidant, anti-skin-aging, anti-inflammatory, and antiacetylcholinesterase activities of the hexane (n-hex), AcOEt, BuOH, MeOH, and aqueous extracts from R. oligophlebia roots. The total phenolic and flavonoid contents (TPC and TFC) were determined using Folin-Ciocalteu and AlCl 3 colorimetric assays. The antioxidant capacity was examined by reducing power (RP), ferric reducing antioxidant power (FRAP), ABTS * + , and DPPH * + radical cation assays. All extracts potentially exhibited antioxidant activity with IC 50 values ranging from 2.93 to 5.73 μg/mL for ABTS * + and from 5.69 to 7.65 μg/mL for DPPH * + except the n-hex extract. The BuOH, MeOH, and aqueous extract possess promising anti-skin-aging activities, as observed by an attenuation of UV-A toxicity on human keratinocytes. We proposed that these antiskin-aging properties are possibly due to direct scavenging activity against reactive oxygen species and upregulate cellular antioxidant machinery. Moreover, we found that the antioxidant capacity was well correlated with anti-inflammatory capacity against nitric oxide (NO) production in terms of the n-hex, AcOEt, and BuOH extracts with IC 50 values from 23.21 to 47.1 μg/mL. In contrast, these activities were found to be poorly correlated with AchE activity. To the best of our knowledge, this is the first report of the antioxidant, anti-skin-aging, antiinflammatory, and anti-acetylcholinesterase activities of the extracts of R. oligophlebia roots. These findings indicated that this species could be a potential source of natural antioxidant, anti-aging, and anti-inflammatory agents. Consequently, it may be suggested as a medicinal plant that prevents diseases related to oxidative stress and inflammatory responses.

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Section: Introductionmentioning

confidence: 96%